ec718d4ca4
Using 'r' to name the third component is problematic because that is commonly used to represent the red component of a vector representing a color. Under GLSL this is awkward because the texture swizzling for a vector uses a single letter for each component and the names for colors, textures and positions are synonymous. GLSL works around this by naming the components of the texture s, t, p and q. Cogl already effectively already exposes this naming because it exposes GLSL so it makes sense to use that naming consistently. Another alternative could be u, v and w. This is what Blender and Direct3D use. However the w component conflicts with the w component of a position vertex.
6516 lines
211 KiB
C
6516 lines
211 KiB
C
/*
|
|
* Cogl
|
|
*
|
|
* An object oriented GL/GLES Abstraction/Utility Layer
|
|
*
|
|
* Copyright (C) 2008,2009,2010 Intel Corporation.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library. If not, see
|
|
* <http://www.gnu.org/licenses/>.
|
|
*
|
|
*
|
|
*
|
|
* Authors:
|
|
* Robert Bragg <robert@linux.intel.com>
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "cogl.h"
|
|
#include "cogl-internal.h"
|
|
#include "cogl-context.h"
|
|
#include "cogl-object.h"
|
|
|
|
#include "cogl-material-private.h"
|
|
#include "cogl-texture-private.h"
|
|
#include "cogl-blend-string.h"
|
|
#include "cogl-journal-private.h"
|
|
#include "cogl-color-private.h"
|
|
#include "cogl-profile.h"
|
|
#ifndef HAVE_COGL_GLES
|
|
#include "cogl-program.h"
|
|
#endif
|
|
|
|
#include <glib.h>
|
|
#include <glib/gprintf.h>
|
|
#include <string.h>
|
|
|
|
/*
|
|
* GL/GLES compatability defines for material thingies:
|
|
*/
|
|
|
|
#ifdef HAVE_COGL_GLES2
|
|
#include "../gles/cogl-gles2-wrapper.h"
|
|
#endif
|
|
|
|
#ifdef HAVE_COGL_GL
|
|
#define glActiveTexture ctx->drv.pf_glActiveTexture
|
|
#define glClientActiveTexture ctx->drv.pf_glClientActiveTexture
|
|
#define glBlendFuncSeparate ctx->drv.pf_glBlendFuncSeparate
|
|
#define glBlendEquation ctx->drv.pf_glBlendEquation
|
|
#define glBlendColor ctx->drv.pf_glBlendColor
|
|
#define glBlendEquationSeparate ctx->drv.pf_glBlendEquationSeparate
|
|
|
|
#define glProgramString ctx->drv.pf_glProgramString
|
|
#define glBindProgram ctx->drv.pf_glBindProgram
|
|
#define glDeletePrograms ctx->drv.pf_glDeletePrograms
|
|
#define glGenPrograms ctx->drv.pf_glGenPrograms
|
|
#define glProgramLocalParameter4fv ctx->drv.pf_glProgramLocalParameter4fv
|
|
#define glUseProgram ctx->drv.pf_glUseProgram
|
|
#endif
|
|
|
|
/* These aren't defined in the GLES headers */
|
|
#ifndef GL_POINT_SPRITE
|
|
#define GL_POINT_SPRITE 0x8861
|
|
#endif
|
|
#ifndef GL_COORD_REPLACE
|
|
#define GL_COORD_REPLACE 0x8862
|
|
#endif
|
|
#ifndef GL_CLAMP_TO_BORDER
|
|
#define GL_CLAMP_TO_BORDER 0x812d
|
|
#endif
|
|
|
|
#define COGL_MATERIAL_LAYER(X) ((CoglMaterialLayer *)(X))
|
|
|
|
typedef gboolean (*CoglMaterialStateComparitor) (CoglMaterial *authority0,
|
|
CoglMaterial *authority1);
|
|
|
|
static CoglMaterialLayer *_cogl_material_layer_copy (CoglMaterialLayer *layer);
|
|
|
|
static void _cogl_material_free (CoglMaterial *tex);
|
|
static void _cogl_material_layer_free (CoglMaterialLayer *layer);
|
|
static void _cogl_material_add_layer_difference (CoglMaterial *material,
|
|
CoglMaterialLayer *layer,
|
|
gboolean inc_n_layers);
|
|
static void handle_automatic_blend_enable (CoglMaterial *material,
|
|
CoglMaterialState changes);
|
|
static void recursively_free_layer_caches (CoglMaterial *material);
|
|
|
|
static const CoglMaterialBackend *backends[COGL_MATERIAL_N_BACKENDS];
|
|
|
|
#ifdef COGL_MATERIAL_BACKEND_GLSL
|
|
#include "cogl-material-glsl-private.h"
|
|
#endif
|
|
#ifdef COGL_MATERIAL_BACKEND_ARBFP
|
|
#include "cogl-material-arbfp-private.h"
|
|
#endif
|
|
#ifdef COGL_MATERIAL_BACKEND_FIXED
|
|
#include "cogl-material-fixed-private.h"
|
|
#endif
|
|
|
|
COGL_OBJECT_DEFINE (Material, material);
|
|
COGL_OBJECT_DEFINE_DEPRECATED_REF_COUNTING (material);
|
|
/* This type was made deprecated before the cogl_is_material_layer
|
|
function was ever exposed in the public headers so there's no need
|
|
to make the cogl_is_material_layer function public. We use INTERNAL
|
|
so that the cogl_is_* function won't get defined */
|
|
COGL_OBJECT_INTERNAL_DEFINE (MaterialLayer, material_layer);
|
|
|
|
static void
|
|
texture_unit_init (CoglTextureUnit *unit, int index_)
|
|
{
|
|
unit->index = index_;
|
|
unit->enabled = FALSE;
|
|
unit->current_gl_target = 0;
|
|
unit->gl_texture = 0;
|
|
unit->is_foreign = FALSE;
|
|
unit->dirty_gl_texture = FALSE;
|
|
unit->matrix_stack = _cogl_matrix_stack_new ();
|
|
|
|
unit->layer = NULL;
|
|
unit->layer_changes_since_flush = 0;
|
|
unit->texture_storage_changed = FALSE;
|
|
}
|
|
|
|
static void
|
|
texture_unit_free (CoglTextureUnit *unit)
|
|
{
|
|
if (unit->layer)
|
|
cogl_object_unref (unit->layer);
|
|
_cogl_matrix_stack_destroy (unit->matrix_stack);
|
|
}
|
|
|
|
CoglTextureUnit *
|
|
_cogl_get_texture_unit (int index_)
|
|
{
|
|
_COGL_GET_CONTEXT (ctx, NULL);
|
|
|
|
if (ctx->texture_units->len < (index_ + 1))
|
|
{
|
|
int i;
|
|
int prev_len = ctx->texture_units->len;
|
|
ctx->texture_units = g_array_set_size (ctx->texture_units, index_ + 1);
|
|
for (i = prev_len; i <= index_; i++)
|
|
{
|
|
CoglTextureUnit *unit =
|
|
&g_array_index (ctx->texture_units, CoglTextureUnit, i);
|
|
|
|
texture_unit_init (unit, i);
|
|
}
|
|
}
|
|
|
|
return &g_array_index (ctx->texture_units, CoglTextureUnit, index_);
|
|
}
|
|
|
|
void
|
|
_cogl_destroy_texture_units (void)
|
|
{
|
|
int i;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
for (i = 0; i < ctx->texture_units->len; i++)
|
|
{
|
|
CoglTextureUnit *unit =
|
|
&g_array_index (ctx->texture_units, CoglTextureUnit, i);
|
|
texture_unit_free (unit);
|
|
}
|
|
g_array_free (ctx->texture_units, TRUE);
|
|
}
|
|
|
|
void
|
|
_cogl_set_active_texture_unit (int unit_index)
|
|
{
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
if (ctx->active_texture_unit != unit_index)
|
|
{
|
|
GE (glActiveTexture (GL_TEXTURE0 + unit_index));
|
|
ctx->active_texture_unit = unit_index;
|
|
}
|
|
}
|
|
|
|
/* Note: _cogl_bind_gl_texture_transient conceptually has slightly
|
|
* different semantics to OpenGL's glBindTexture because Cogl never
|
|
* cares about tracking multiple textures bound to different targets
|
|
* on the same texture unit.
|
|
*
|
|
* glBindTexture lets you bind multiple textures to a single texture
|
|
* unit if they are bound to different targets. So it does something
|
|
* like:
|
|
* unit->current_texture[target] = texture;
|
|
*
|
|
* Cogl only lets you associate one texture with the currently active
|
|
* texture unit, so the target is basically a redundant parameter
|
|
* that's implicitly set on that texture.
|
|
*
|
|
* Technically this is just a thin wrapper around glBindTexture so
|
|
* actually it does have the GL semantics but it seems worth
|
|
* mentioning the conceptual difference in case anyone wonders why we
|
|
* don't associate the gl_texture with a gl_target in the
|
|
* CoglTextureUnit.
|
|
*/
|
|
void
|
|
_cogl_bind_gl_texture_transient (GLenum gl_target,
|
|
GLuint gl_texture,
|
|
gboolean is_foreign)
|
|
{
|
|
CoglTextureUnit *unit;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
/* We choose to always make texture unit 1 active for transient
|
|
* binds so that in the common case where multitexturing isn't used
|
|
* we can simply ignore the state of this texture unit. Notably we
|
|
* didn't use a large texture unit (.e.g. (GL_MAX_TEXTURE_UNITS - 1)
|
|
* in case the driver doesn't have a sparse data structure for
|
|
* texture units.
|
|
*/
|
|
_cogl_set_active_texture_unit (1);
|
|
unit = _cogl_get_texture_unit (1);
|
|
|
|
/* NB: If we have previously bound a foreign texture to this texture
|
|
* unit we don't know if that texture has since been deleted and we
|
|
* are seeing the texture name recycled */
|
|
if (unit->gl_texture == gl_texture &&
|
|
!unit->dirty_gl_texture &&
|
|
!unit->is_foreign)
|
|
return;
|
|
|
|
GE (glBindTexture (gl_target, gl_texture));
|
|
|
|
unit->dirty_gl_texture = TRUE;
|
|
unit->is_foreign = is_foreign;
|
|
}
|
|
|
|
void
|
|
_cogl_delete_gl_texture (GLuint gl_texture)
|
|
{
|
|
int i;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
for (i = 0; i < ctx->texture_units->len; i++)
|
|
{
|
|
CoglTextureUnit *unit =
|
|
&g_array_index (ctx->texture_units, CoglTextureUnit, i);
|
|
|
|
if (unit->gl_texture == gl_texture)
|
|
{
|
|
unit->gl_texture = 0;
|
|
unit->dirty_gl_texture = FALSE;
|
|
}
|
|
}
|
|
|
|
GE (glDeleteTextures (1, &gl_texture));
|
|
}
|
|
|
|
/* Whenever the underlying GL texture storage of a CoglTexture is
|
|
* changed (e.g. due to migration out of a texture atlas) then we are
|
|
* notified. This lets us ensure that we reflush that texture's state
|
|
* if it reused again with the same texture unit.
|
|
*/
|
|
void
|
|
_cogl_material_texture_storage_change_notify (CoglHandle texture)
|
|
{
|
|
int i;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
for (i = 0; i < ctx->texture_units->len; i++)
|
|
{
|
|
CoglTextureUnit *unit =
|
|
&g_array_index (ctx->texture_units, CoglTextureUnit, i);
|
|
|
|
if (unit->layer &&
|
|
unit->layer->texture == texture)
|
|
unit->texture_storage_changed = TRUE;
|
|
|
|
/* NB: the texture may be bound to multiple texture units so
|
|
* we continue to check the rest */
|
|
}
|
|
}
|
|
|
|
GQuark
|
|
_cogl_material_error_quark (void)
|
|
{
|
|
return g_quark_from_static_string ("cogl-material-error-quark");
|
|
}
|
|
|
|
static void
|
|
_cogl_material_node_init (CoglMaterialNode *node)
|
|
{
|
|
node->parent = NULL;
|
|
node->has_children = FALSE;
|
|
}
|
|
|
|
static void
|
|
_cogl_material_node_set_parent_real (CoglMaterialNode *node,
|
|
CoglMaterialNode *parent,
|
|
CoglMaterialNodeUnparentVFunc unparent)
|
|
{
|
|
/* NB: the old parent may indirectly be keeping the new parent alive so we
|
|
* have to ref the new parent before unrefing the old */
|
|
cogl_object_ref (parent);
|
|
|
|
if (node->parent)
|
|
unparent (node);
|
|
|
|
if (G_UNLIKELY (parent->has_children))
|
|
parent->children = g_list_prepend (parent->children, node);
|
|
else
|
|
{
|
|
parent->has_children = TRUE;
|
|
parent->first_child = node;
|
|
parent->children = NULL;
|
|
}
|
|
|
|
node->parent = parent;
|
|
}
|
|
|
|
static void
|
|
_cogl_material_node_unparent_real (CoglMaterialNode *node)
|
|
{
|
|
CoglMaterialNode *parent = node->parent;
|
|
|
|
if (parent == NULL)
|
|
return;
|
|
|
|
g_return_if_fail (parent->has_children);
|
|
|
|
if (parent->first_child == node)
|
|
{
|
|
if (parent->children)
|
|
{
|
|
parent->first_child = parent->children->data;
|
|
parent->children =
|
|
g_list_delete_link (parent->children, parent->children);
|
|
}
|
|
else
|
|
parent->has_children = FALSE;
|
|
}
|
|
else
|
|
parent->children = g_list_remove (parent->children, node);
|
|
|
|
cogl_object_unref (parent);
|
|
|
|
node->parent = NULL;
|
|
}
|
|
|
|
void
|
|
_cogl_material_node_foreach_child (CoglMaterialNode *node,
|
|
CoglMaterialNodeChildCallback callback,
|
|
void *user_data)
|
|
{
|
|
if (node->has_children)
|
|
{
|
|
callback (node->first_child, user_data);
|
|
g_list_foreach (node->children, (GFunc)callback, user_data);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* This initializes the first material owned by the Cogl context. All
|
|
* subsequently instantiated materials created via the cogl_material_new()
|
|
* API will initially be a copy of this material.
|
|
*
|
|
* The default material is the topmost ancester for all materials.
|
|
*/
|
|
void
|
|
_cogl_material_init_default_material (void)
|
|
{
|
|
/* Create new - blank - material */
|
|
CoglMaterial *material = g_slice_new0 (CoglMaterial);
|
|
CoglMaterialBigState *big_state = g_slice_new0 (CoglMaterialBigState);
|
|
CoglMaterialLightingState *lighting_state = &big_state->lighting_state;
|
|
CoglMaterialAlphaFuncState *alpha_state = &big_state->alpha_state;
|
|
CoglMaterialBlendState *blend_state = &big_state->blend_state;
|
|
CoglMaterialDepthState *depth_state = &big_state->depth_state;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
/* Take this opportunity to setup the fragment processing backends... */
|
|
#ifdef COGL_MATERIAL_BACKEND_GLSL
|
|
backends[COGL_MATERIAL_BACKEND_GLSL] = &_cogl_material_glsl_backend;
|
|
#endif
|
|
#ifdef COGL_MATERIAL_BACKEND_ARBFP
|
|
backends[COGL_MATERIAL_BACKEND_ARBFP] = &_cogl_material_arbfp_backend;
|
|
#endif
|
|
#ifdef COGL_MATERIAL_BACKEND_FIXED
|
|
backends[COGL_MATERIAL_BACKEND_FIXED] = &_cogl_material_fixed_backend;
|
|
#endif
|
|
|
|
_cogl_material_node_init (COGL_MATERIAL_NODE (material));
|
|
|
|
material->is_weak = FALSE;
|
|
material->journal_ref_count = 0;
|
|
material->backend = COGL_MATERIAL_BACKEND_UNDEFINED;
|
|
material->differences = COGL_MATERIAL_STATE_ALL_SPARSE;
|
|
|
|
material->real_blend_enable = FALSE;
|
|
|
|
material->blend_enable = COGL_MATERIAL_BLEND_ENABLE_AUTOMATIC;
|
|
material->layer_differences = NULL;
|
|
material->n_layers = 0;
|
|
|
|
material->big_state = big_state;
|
|
material->has_big_state = TRUE;
|
|
|
|
material->static_breadcrumb = "default material";
|
|
material->has_static_breadcrumb = TRUE;
|
|
|
|
material->age = 0;
|
|
|
|
/* Use the same defaults as the GL spec... */
|
|
cogl_color_init_from_4ub (&material->color, 0xff, 0xff, 0xff, 0xff);
|
|
|
|
/* Use the same defaults as the GL spec... */
|
|
lighting_state->ambient[0] = 0.2;
|
|
lighting_state->ambient[1] = 0.2;
|
|
lighting_state->ambient[2] = 0.2;
|
|
lighting_state->ambient[3] = 1.0;
|
|
|
|
lighting_state->diffuse[0] = 0.8;
|
|
lighting_state->diffuse[1] = 0.8;
|
|
lighting_state->diffuse[2] = 0.8;
|
|
lighting_state->diffuse[3] = 1.0;
|
|
|
|
lighting_state->specular[0] = 0;
|
|
lighting_state->specular[1] = 0;
|
|
lighting_state->specular[2] = 0;
|
|
lighting_state->specular[3] = 1.0;
|
|
|
|
lighting_state->emission[0] = 0;
|
|
lighting_state->emission[1] = 0;
|
|
lighting_state->emission[2] = 0;
|
|
lighting_state->emission[3] = 1.0;
|
|
|
|
/* Use the same defaults as the GL spec... */
|
|
alpha_state->alpha_func = COGL_MATERIAL_ALPHA_FUNC_ALWAYS;
|
|
alpha_state->alpha_func_reference = 0.0;
|
|
|
|
/* Not the same as the GL default, but seems saner... */
|
|
#ifndef HAVE_COGL_GLES
|
|
blend_state->blend_equation_rgb = GL_FUNC_ADD;
|
|
blend_state->blend_equation_alpha = GL_FUNC_ADD;
|
|
blend_state->blend_src_factor_alpha = GL_ONE;
|
|
blend_state->blend_dst_factor_alpha = GL_ONE_MINUS_SRC_ALPHA;
|
|
cogl_color_init_from_4ub (&blend_state->blend_constant,
|
|
0x00, 0x00, 0x00, 0x00);
|
|
#endif
|
|
blend_state->blend_src_factor_rgb = GL_ONE;
|
|
blend_state->blend_dst_factor_rgb = GL_ONE_MINUS_SRC_ALPHA;
|
|
|
|
big_state->user_program = COGL_INVALID_HANDLE;
|
|
|
|
/* The same as the GL defaults */
|
|
depth_state->depth_test_enabled = FALSE;
|
|
depth_state->depth_test_function = COGL_DEPTH_TEST_FUNCTION_LESS;
|
|
depth_state->depth_writing_enabled = TRUE;
|
|
depth_state->depth_range_near = 0;
|
|
depth_state->depth_range_far = 1;
|
|
|
|
big_state->point_size = 1.0f;
|
|
|
|
ctx->default_material = _cogl_material_object_new (material);
|
|
}
|
|
|
|
static void
|
|
_cogl_material_unparent (CoglMaterialNode *material)
|
|
{
|
|
/* Chain up */
|
|
_cogl_material_node_unparent_real (material);
|
|
}
|
|
|
|
static gboolean
|
|
recursively_free_layer_caches_cb (CoglMaterialNode *node,
|
|
void *user_data)
|
|
{
|
|
recursively_free_layer_caches (COGL_MATERIAL (node));
|
|
return TRUE;
|
|
}
|
|
|
|
/* This recursively frees the layers_cache of a material and all of
|
|
* its descendants.
|
|
*
|
|
* For instance if we change a materials ->layer_differences list
|
|
* then that material and all of its descendants may now have
|
|
* incorrect layer caches. */
|
|
static void
|
|
recursively_free_layer_caches (CoglMaterial *material)
|
|
{
|
|
/* Note: we maintain the invariable that if a material already has a
|
|
* dirty layers_cache then so do all of its descendants. */
|
|
if (material->layers_cache_dirty)
|
|
return;
|
|
|
|
if (G_UNLIKELY (material->layers_cache != material->short_layers_cache))
|
|
g_slice_free1 (sizeof (CoglMaterialLayer *) * material->n_layers,
|
|
material->layers_cache);
|
|
material->layers_cache_dirty = TRUE;
|
|
|
|
_cogl_material_node_foreach_child (COGL_MATERIAL_NODE (material),
|
|
recursively_free_layer_caches_cb,
|
|
NULL);
|
|
}
|
|
|
|
static void
|
|
_cogl_material_set_parent (CoglMaterial *material, CoglMaterial *parent)
|
|
{
|
|
/* Chain up */
|
|
_cogl_material_node_set_parent_real (COGL_MATERIAL_NODE (material),
|
|
COGL_MATERIAL_NODE (parent),
|
|
_cogl_material_unparent);
|
|
|
|
/* Since we just changed the ancestry of the material its cache of
|
|
* layers could now be invalid so free it... */
|
|
if (material->differences & COGL_MATERIAL_STATE_LAYERS)
|
|
recursively_free_layer_caches (material);
|
|
|
|
/* If the fragment processing backend is also caching state along
|
|
* with the material that depends on the material's ancestry then it
|
|
* may be notified here...
|
|
*/
|
|
if (material->backend != COGL_MATERIAL_BACKEND_UNDEFINED &&
|
|
backends[material->backend]->material_set_parent_notify)
|
|
backends[material->backend]->material_set_parent_notify (material);
|
|
}
|
|
|
|
/* XXX: Always have an eye out for opportunities to lower the cost of
|
|
* cogl_material_copy. */
|
|
CoglMaterial *
|
|
cogl_material_copy (CoglMaterial *src)
|
|
{
|
|
CoglMaterial *material = g_slice_new (CoglMaterial);
|
|
|
|
_cogl_material_node_init (COGL_MATERIAL_NODE (material));
|
|
|
|
material->is_weak = FALSE;
|
|
|
|
material->journal_ref_count = 0;
|
|
|
|
material->differences = 0;
|
|
|
|
material->has_big_state = FALSE;
|
|
|
|
/* NB: real_blend_enable isn't a sparse property, it's valid for
|
|
* every material node so we have fast access to it. */
|
|
material->real_blend_enable = src->real_blend_enable;
|
|
|
|
/* XXX:
|
|
* consider generalizing the idea of "cached" properties. These
|
|
* would still have an authority like other sparse properties but
|
|
* you wouldn't have to walk up the ancestry to find the authority
|
|
* because the value would be cached directly in each material.
|
|
*/
|
|
|
|
material->layers_cache_dirty = TRUE;
|
|
material->deprecated_get_layers_list_dirty = TRUE;
|
|
|
|
material->backend = src->backend;
|
|
material->backend_priv_set_mask = 0;
|
|
|
|
material->has_static_breadcrumb = FALSE;
|
|
|
|
material->age = 0;
|
|
|
|
_cogl_material_set_parent (material, src);
|
|
|
|
return _cogl_material_object_new (material);
|
|
}
|
|
|
|
/* XXX: we should give this more thought before making anything like
|
|
* this API public! */
|
|
CoglMaterial *
|
|
_cogl_material_weak_copy (CoglMaterial *material)
|
|
{
|
|
CoglMaterial *copy;
|
|
CoglMaterial *copy_material;
|
|
|
|
/* If we make a public API we might want want to allow weak copies
|
|
* of weak material? */
|
|
g_return_val_if_fail (!material->is_weak, NULL);
|
|
|
|
copy = cogl_material_copy (material);
|
|
copy_material = COGL_MATERIAL (copy);
|
|
copy_material->is_weak = TRUE;
|
|
|
|
return copy;
|
|
}
|
|
|
|
CoglMaterial *
|
|
cogl_material_new (void)
|
|
{
|
|
CoglMaterial *new;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NULL);
|
|
|
|
new = cogl_material_copy (ctx->default_material);
|
|
_cogl_material_set_static_breadcrumb (new, "new");
|
|
return new;
|
|
}
|
|
|
|
static void
|
|
_cogl_material_backend_free_priv (CoglMaterial *material)
|
|
{
|
|
if (material->backend != COGL_MATERIAL_BACKEND_UNDEFINED &&
|
|
backends[material->backend]->free_priv)
|
|
backends[material->backend]->free_priv (material);
|
|
}
|
|
|
|
static void
|
|
_cogl_material_free (CoglMaterial *material)
|
|
{
|
|
_cogl_material_backend_free_priv (material);
|
|
|
|
_cogl_material_unparent (COGL_MATERIAL_NODE (material));
|
|
|
|
if (material->differences & COGL_MATERIAL_STATE_USER_SHADER &&
|
|
material->big_state->user_program)
|
|
cogl_handle_unref (material->big_state->user_program);
|
|
|
|
if (material->differences & COGL_MATERIAL_STATE_NEEDS_BIG_STATE)
|
|
g_slice_free (CoglMaterialBigState, material->big_state);
|
|
|
|
if (material->differences & COGL_MATERIAL_STATE_LAYERS)
|
|
{
|
|
g_list_foreach (material->layer_differences,
|
|
(GFunc)cogl_object_unref, NULL);
|
|
g_list_free (material->layer_differences);
|
|
}
|
|
|
|
g_slice_free (CoglMaterial, material);
|
|
}
|
|
|
|
gboolean
|
|
_cogl_material_get_real_blend_enabled (CoglMaterial *material)
|
|
{
|
|
g_return_val_if_fail (cogl_is_material (material), FALSE);
|
|
|
|
return material->real_blend_enable;
|
|
}
|
|
|
|
inline CoglMaterial *
|
|
_cogl_material_get_parent (CoglMaterial *material)
|
|
{
|
|
CoglMaterialNode *parent_node = COGL_MATERIAL_NODE (material)->parent;
|
|
return COGL_MATERIAL (parent_node);
|
|
}
|
|
|
|
CoglMaterial *
|
|
_cogl_material_get_authority (CoglMaterial *material,
|
|
unsigned long difference)
|
|
{
|
|
CoglMaterial *authority = material;
|
|
while (!(authority->differences & difference))
|
|
authority = _cogl_material_get_parent (authority);
|
|
return authority;
|
|
}
|
|
|
|
/* XXX: Think twice before making this non static since it is used
|
|
* heavily and we expect the compiler to inline it...
|
|
*/
|
|
static CoglMaterialLayer *
|
|
_cogl_material_layer_get_parent (CoglMaterialLayer *layer)
|
|
{
|
|
CoglMaterialNode *parent_node = COGL_MATERIAL_NODE (layer)->parent;
|
|
return COGL_MATERIAL_LAYER (parent_node);
|
|
}
|
|
|
|
CoglMaterialLayer *
|
|
_cogl_material_layer_get_authority (CoglMaterialLayer *layer,
|
|
unsigned long difference)
|
|
{
|
|
CoglMaterialLayer *authority = layer;
|
|
while (!(authority->differences & difference))
|
|
authority = _cogl_material_layer_get_parent (authority);
|
|
return authority;
|
|
}
|
|
|
|
int
|
|
_cogl_material_layer_get_unit_index (CoglMaterialLayer *layer)
|
|
{
|
|
CoglMaterialLayer *authority =
|
|
_cogl_material_layer_get_authority (layer, COGL_MATERIAL_LAYER_STATE_UNIT);
|
|
return authority->unit_index;
|
|
}
|
|
|
|
static void
|
|
_cogl_material_update_layers_cache (CoglMaterial *material)
|
|
{
|
|
/* Note: we assume this material is a _LAYERS authority */
|
|
int n_layers;
|
|
CoglMaterial *current;
|
|
int layers_found;
|
|
|
|
if (G_LIKELY (!material->layers_cache_dirty) ||
|
|
material->n_layers == 0)
|
|
return;
|
|
|
|
material->layers_cache_dirty = FALSE;
|
|
|
|
n_layers = material->n_layers;
|
|
if (G_LIKELY (n_layers < G_N_ELEMENTS (material->short_layers_cache)))
|
|
{
|
|
material->layers_cache = material->short_layers_cache;
|
|
memset (material->layers_cache, 0,
|
|
sizeof (CoglMaterialLayer *) *
|
|
G_N_ELEMENTS (material->short_layers_cache));
|
|
}
|
|
else
|
|
{
|
|
material->layers_cache =
|
|
g_slice_alloc0 (sizeof (CoglMaterialLayer *) * n_layers);
|
|
}
|
|
|
|
/* Notes:
|
|
*
|
|
* Each material doesn't have to contain a complete list of the layers
|
|
* it depends on, some of them are indirectly referenced through the
|
|
* material's ancestors.
|
|
*
|
|
* material->layer_differences only contains a list of layers that
|
|
* have changed in relation to its parent.
|
|
*
|
|
* material->layer_differences is not maintained sorted, but it
|
|
* won't contain multiple layers corresponding to a particular
|
|
* ->unit_index.
|
|
*
|
|
* Some of the ancestor materials may reference layers with
|
|
* ->unit_index values >= n_layers so we ignore them.
|
|
*
|
|
* As we ascend through the ancestors we are searching for any
|
|
* CoglMaterialLayers corresponding to the texture ->unit_index
|
|
* values in the range [0,n_layers-1]. As soon as a pointer is found
|
|
* we ignore layers of further ancestors with the same ->unit_index
|
|
* values.
|
|
*/
|
|
|
|
layers_found = 0;
|
|
for (current = material;
|
|
_cogl_material_get_parent (current);
|
|
current = _cogl_material_get_parent (current))
|
|
{
|
|
GList *l;
|
|
|
|
if (!(current->differences & COGL_MATERIAL_STATE_LAYERS))
|
|
continue;
|
|
|
|
for (l = current->layer_differences; l; l = l->next)
|
|
{
|
|
CoglMaterialLayer *layer = l->data;
|
|
int unit_index = _cogl_material_layer_get_unit_index (layer);
|
|
|
|
if (unit_index < n_layers && !material->layers_cache[unit_index])
|
|
{
|
|
material->layers_cache[unit_index] = layer;
|
|
layers_found++;
|
|
if (layers_found == n_layers)
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
g_warn_if_reached ();
|
|
}
|
|
|
|
/* TODO: add public cogl_material_foreach_layer but instead of passing
|
|
* a CoglMaterialLayer pointer to the callback we should pass a
|
|
* layer_index instead. */
|
|
|
|
void
|
|
_cogl_material_foreach_layer (CoglMaterial *material,
|
|
CoglMaterialLayerCallback callback,
|
|
void *user_data)
|
|
{
|
|
CoglMaterial *authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_LAYERS);
|
|
int n_layers;
|
|
int i;
|
|
gboolean cont;
|
|
|
|
n_layers = authority->n_layers;
|
|
if (n_layers == 0)
|
|
return;
|
|
|
|
_cogl_material_update_layers_cache (authority);
|
|
|
|
for (i = 0, cont = TRUE; i < n_layers && cont == TRUE; i++)
|
|
cont = callback (authority->layers_cache[i], user_data);
|
|
}
|
|
|
|
static gboolean
|
|
layer_has_alpha_cb (CoglMaterialLayer *layer, void *data)
|
|
{
|
|
CoglMaterialLayer *combine_authority =
|
|
_cogl_material_layer_get_authority (layer,
|
|
COGL_MATERIAL_LAYER_STATE_COMBINE);
|
|
CoglMaterialLayerBigState *big_state = combine_authority->big_state;
|
|
CoglMaterialLayer *tex_authority;
|
|
gboolean *has_alpha = data;
|
|
|
|
/* has_alpha maintains the alpha status for the GL_PREVIOUS layer */
|
|
|
|
/* For anything but the default texture combine we currently just
|
|
* assume it may result in an alpha value < 1
|
|
*
|
|
* FIXME: we could do better than this. */
|
|
if (big_state->texture_combine_alpha_func != GL_MODULATE ||
|
|
big_state->texture_combine_alpha_src[0] != GL_PREVIOUS ||
|
|
big_state->texture_combine_alpha_op[0] != GL_SRC_ALPHA ||
|
|
big_state->texture_combine_alpha_src[0] != GL_TEXTURE ||
|
|
big_state->texture_combine_alpha_op[0] != GL_SRC_ALPHA)
|
|
{
|
|
*has_alpha = TRUE;
|
|
/* return FALSE to stop iterating layers... */
|
|
return FALSE;
|
|
}
|
|
|
|
/* NB: A layer may have a combine mode set on it but not yet
|
|
* have an associated texture which would mean we'd fallback
|
|
* to the default texture which doesn't have an alpha component
|
|
*/
|
|
tex_authority =
|
|
_cogl_material_layer_get_authority (layer,
|
|
COGL_MATERIAL_LAYER_STATE_TEXTURE);
|
|
if (tex_authority->texture &&
|
|
cogl_texture_get_format (tex_authority->texture) & COGL_A_BIT)
|
|
{
|
|
*has_alpha = TRUE;
|
|
/* return FALSE to stop iterating layers... */
|
|
return FALSE;
|
|
}
|
|
|
|
*has_alpha = FALSE;
|
|
/* return FALSE to continue iterating layers... */
|
|
return TRUE;
|
|
}
|
|
|
|
static CoglMaterial *
|
|
_cogl_material_get_user_program (CoglMaterial *material)
|
|
{
|
|
CoglMaterial *authority;
|
|
|
|
g_return_val_if_fail (cogl_is_material (material), NULL);
|
|
|
|
authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_USER_SHADER);
|
|
|
|
return authority->big_state->user_program;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_material_needs_blending_enabled (CoglMaterial *material,
|
|
unsigned long changes,
|
|
const CoglColor *override_color)
|
|
{
|
|
CoglMaterial *enable_authority;
|
|
CoglMaterial *blend_authority;
|
|
CoglMaterialBlendState *blend_state;
|
|
CoglMaterialBlendEnable enabled;
|
|
unsigned long other_state;
|
|
|
|
if (G_UNLIKELY (cogl_debug_flags & COGL_DEBUG_DISABLE_BLENDING))
|
|
return FALSE;
|
|
|
|
enable_authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_BLEND_ENABLE);
|
|
|
|
enabled = enable_authority->blend_enable;
|
|
if (enabled != COGL_MATERIAL_BLEND_ENABLE_AUTOMATIC)
|
|
return enabled == COGL_MATERIAL_BLEND_ENABLE_ENABLED ? TRUE : FALSE;
|
|
|
|
blend_authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_BLEND);
|
|
|
|
blend_state = &blend_authority->big_state->blend_state;
|
|
|
|
/* We are trying to identify awkward cases that are equivalent to
|
|
* blending being disable, where the output is simply GL_SRC_COLOR.
|
|
*
|
|
* Note: we assume that all OpenGL drivers will identify the simple
|
|
* case of ADD (ONE, ZERO) as equivalent to blending being disabled.
|
|
*
|
|
* We should update this when we add support for more blend
|
|
* functions...
|
|
*/
|
|
|
|
#ifndef HAVE_COGL_GLES
|
|
/* GLES 1 can't change the function or have separate alpha factors */
|
|
if (blend_state->blend_equation_rgb != GL_FUNC_ADD ||
|
|
blend_state->blend_equation_alpha != GL_FUNC_ADD)
|
|
return TRUE;
|
|
|
|
if (blend_state->blend_src_factor_alpha != GL_ONE ||
|
|
blend_state->blend_dst_factor_alpha != GL_ONE_MINUS_SRC_ALPHA)
|
|
return TRUE;
|
|
#endif
|
|
|
|
if (blend_state->blend_src_factor_rgb != GL_ONE ||
|
|
blend_state->blend_dst_factor_rgb != GL_ONE_MINUS_SRC_ALPHA)
|
|
return TRUE;
|
|
|
|
/* Given the above constraints, it's now a case of finding any
|
|
* SRC_ALPHA that != 1 */
|
|
|
|
/* In the case of a layer state change we need to check everything
|
|
* else first since they contribute to the has_alpha status of the
|
|
* GL_PREVIOUS layer. */
|
|
if (changes & COGL_MATERIAL_STATE_LAYERS)
|
|
changes = COGL_MATERIAL_STATE_AFFECTS_BLENDING;
|
|
|
|
/* XXX: we don't currently handle specific changes in an optimal way*/
|
|
changes = COGL_MATERIAL_STATE_AFFECTS_BLENDING;
|
|
|
|
if ((override_color && cogl_color_get_alpha_byte (override_color) != 0xff))
|
|
return TRUE;
|
|
|
|
if (changes & COGL_MATERIAL_STATE_COLOR)
|
|
{
|
|
CoglColor tmp;
|
|
cogl_material_get_color (material, &tmp);
|
|
if (cogl_color_get_alpha_byte (&tmp) != 0xff)
|
|
return TRUE;
|
|
}
|
|
|
|
/* We can't make any assumptions about the alpha channel if the user
|
|
* is using an unknown fragment shader.
|
|
*
|
|
* TODO: check that it isn't just a vertex shader!
|
|
*/
|
|
if (changes & COGL_MATERIAL_STATE_USER_SHADER)
|
|
{
|
|
if (_cogl_material_get_user_program (material) != COGL_INVALID_HANDLE)
|
|
return TRUE;
|
|
}
|
|
|
|
/* XXX: we should only need to look at these if lighting is enabled
|
|
*/
|
|
if (changes & COGL_MATERIAL_STATE_LIGHTING)
|
|
{
|
|
CoglColor tmp;
|
|
|
|
cogl_material_get_ambient (material, &tmp);
|
|
if (cogl_color_get_alpha_byte (&tmp) != 0xff)
|
|
return TRUE;
|
|
cogl_material_get_diffuse (material, &tmp);
|
|
if (cogl_color_get_alpha_byte (&tmp) != 0xff)
|
|
return TRUE;
|
|
cogl_material_get_specular (material, &tmp);
|
|
if (cogl_color_get_alpha_byte (&tmp) != 0xff)
|
|
return TRUE;
|
|
cogl_material_get_emission (material, &tmp);
|
|
if (cogl_color_get_alpha_byte (&tmp) != 0xff)
|
|
return TRUE;
|
|
}
|
|
|
|
if (changes & COGL_MATERIAL_STATE_LAYERS)
|
|
{
|
|
/* has_alpha tracks the alpha status of the GL_PREVIOUS layer.
|
|
* To start with that's defined by the material color which
|
|
* must be fully opaque if we got this far. */
|
|
gboolean has_alpha = FALSE;
|
|
_cogl_material_foreach_layer (material,
|
|
layer_has_alpha_cb,
|
|
&has_alpha);
|
|
if (has_alpha)
|
|
return TRUE;
|
|
}
|
|
|
|
/* So far we have only checked the property that has been changed so
|
|
* we now need to check all the other properties too. */
|
|
other_state = COGL_MATERIAL_STATE_AFFECTS_BLENDING & ~changes;
|
|
if (other_state &&
|
|
_cogl_material_needs_blending_enabled (material,
|
|
other_state,
|
|
NULL))
|
|
return TRUE;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
_cogl_material_set_backend (CoglMaterial *material, int backend)
|
|
{
|
|
_cogl_material_backend_free_priv (material);
|
|
material->backend = backend;
|
|
}
|
|
|
|
static void
|
|
_cogl_material_copy_differences (CoglMaterial *dest,
|
|
CoglMaterial *src,
|
|
unsigned long differences)
|
|
{
|
|
CoglMaterialBigState *big_state;
|
|
|
|
if (differences & COGL_MATERIAL_STATE_COLOR)
|
|
dest->color = src->color;
|
|
|
|
if (differences & COGL_MATERIAL_STATE_BLEND_ENABLE)
|
|
dest->blend_enable = src->blend_enable;
|
|
|
|
if (differences & COGL_MATERIAL_STATE_LAYERS)
|
|
{
|
|
GList *l;
|
|
|
|
if (dest->differences & COGL_MATERIAL_STATE_LAYERS &&
|
|
dest->layer_differences)
|
|
{
|
|
g_list_foreach (dest->layer_differences,
|
|
(GFunc)cogl_object_unref,
|
|
NULL);
|
|
g_list_free (dest->layer_differences);
|
|
}
|
|
|
|
dest->n_layers = src->n_layers;
|
|
dest->layer_differences = g_list_copy (src->layer_differences);
|
|
|
|
for (l = src->layer_differences; l; l = l->next)
|
|
{
|
|
/* NB: a layer can't have more than one ->owner so we can't
|
|
* simply take a references on each of the original
|
|
* layer_differences, we have to derive new layers from the
|
|
* originals instead. */
|
|
CoglMaterialLayer *copy = _cogl_material_layer_copy (l->data);
|
|
_cogl_material_add_layer_difference (dest, copy, FALSE);
|
|
cogl_object_unref (copy);
|
|
}
|
|
}
|
|
|
|
if (differences & COGL_MATERIAL_STATE_NEEDS_BIG_STATE)
|
|
{
|
|
if (!dest->has_big_state)
|
|
{
|
|
dest->big_state = g_slice_new (CoglMaterialBigState);
|
|
dest->has_big_state = TRUE;
|
|
}
|
|
big_state = dest->big_state;
|
|
}
|
|
else
|
|
goto check_for_blending_change;
|
|
|
|
if (differences & COGL_MATERIAL_STATE_LIGHTING)
|
|
{
|
|
memcpy (&big_state->lighting_state,
|
|
&src->big_state->lighting_state,
|
|
sizeof (CoglMaterialLightingState));
|
|
}
|
|
|
|
if (differences & COGL_MATERIAL_STATE_ALPHA_FUNC)
|
|
{
|
|
memcpy (&big_state->alpha_state,
|
|
&src->big_state->alpha_state,
|
|
sizeof (CoglMaterialAlphaFuncState));
|
|
}
|
|
|
|
if (differences & COGL_MATERIAL_STATE_BLEND)
|
|
{
|
|
memcpy (&big_state->blend_state,
|
|
&src->big_state->blend_state,
|
|
sizeof (CoglMaterialBlendState));
|
|
}
|
|
|
|
if (differences & COGL_MATERIAL_STATE_USER_SHADER)
|
|
{
|
|
if (src->big_state->user_program)
|
|
big_state->user_program =
|
|
cogl_handle_ref (src->big_state->user_program);
|
|
else
|
|
big_state->user_program = COGL_INVALID_HANDLE;
|
|
}
|
|
|
|
if (differences & COGL_MATERIAL_STATE_DEPTH)
|
|
{
|
|
memcpy (&big_state->depth_state,
|
|
&src->big_state->depth_state,
|
|
sizeof (CoglMaterialDepthState));
|
|
}
|
|
|
|
if (differences & COGL_MATERIAL_STATE_POINT_SIZE)
|
|
big_state->point_size = src->big_state->point_size;
|
|
|
|
/* XXX: we shouldn't bother doing this in most cases since
|
|
* _copy_differences is typically used to initialize material state
|
|
* by copying it from the current authority, so it's not actually
|
|
* *changing* anything.
|
|
*/
|
|
check_for_blending_change:
|
|
if (differences & COGL_MATERIAL_STATE_AFFECTS_BLENDING)
|
|
handle_automatic_blend_enable (dest, differences);
|
|
|
|
dest->differences |= differences;
|
|
}
|
|
|
|
static void
|
|
_cogl_material_initialize_state (CoglMaterial *dest,
|
|
CoglMaterial *src,
|
|
CoglMaterialState state)
|
|
{
|
|
if (dest == src)
|
|
return;
|
|
|
|
if (state != COGL_MATERIAL_STATE_LAYERS)
|
|
_cogl_material_copy_differences (dest, src, state);
|
|
else
|
|
{
|
|
dest->n_layers = src->n_layers;
|
|
dest->layer_differences = NULL;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
check_if_strong_cb (CoglMaterialNode *node, void *user_data)
|
|
{
|
|
CoglMaterial *material = COGL_MATERIAL (node);
|
|
gboolean *has_strong_child = user_data;
|
|
|
|
if (!material->is_weak)
|
|
{
|
|
*has_strong_child = TRUE;
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
has_strong_children (CoglMaterial *material)
|
|
{
|
|
gboolean has_strong_child = FALSE;
|
|
_cogl_material_node_foreach_child (COGL_MATERIAL_NODE (material),
|
|
check_if_strong_cb,
|
|
&has_strong_child);
|
|
return has_strong_child;
|
|
}
|
|
|
|
static gboolean
|
|
reparent_strong_children_cb (CoglMaterialNode *node,
|
|
void *user_data)
|
|
{
|
|
CoglMaterial *material = COGL_MATERIAL (node);
|
|
CoglMaterial *parent = user_data;
|
|
|
|
if (material->is_weak)
|
|
return TRUE;
|
|
|
|
_cogl_material_set_parent (material, parent);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
_cogl_material_pre_change_notify (CoglMaterial *material,
|
|
CoglMaterialState change,
|
|
const CoglColor *new_color)
|
|
{
|
|
CoglMaterial *authority;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
/* If primitives have been logged in the journal referencing the
|
|
* current state of this material we need to flush the journal
|
|
* before we can modify it... */
|
|
if (material->journal_ref_count)
|
|
{
|
|
gboolean skip_journal_flush = FALSE;
|
|
|
|
/* XXX: We don't usually need to flush the journal just due to
|
|
* color changes since material colors are logged in the
|
|
* journal's vertex buffer. The exception is when the change in
|
|
* color enables or disables the need for blending. */
|
|
if (change == COGL_MATERIAL_STATE_COLOR)
|
|
{
|
|
gboolean will_need_blending =
|
|
_cogl_material_needs_blending_enabled (material,
|
|
change,
|
|
new_color);
|
|
gboolean blend_enable = material->real_blend_enable ? TRUE : FALSE;
|
|
|
|
if (will_need_blending == blend_enable)
|
|
skip_journal_flush = TRUE;
|
|
}
|
|
|
|
if (!skip_journal_flush)
|
|
_cogl_journal_flush ();
|
|
}
|
|
|
|
/* The fixed function backend has no private state and can't
|
|
* do anything special to handle small material changes so we may as
|
|
* well try to find a better backend whenever the material changes.
|
|
*
|
|
* The programmable backends may be able to cache a lot of the code
|
|
* they generate and only need to update a small section of that
|
|
* code in response to a material change therefore we don't want to
|
|
* try searching for another backend when the material changes.
|
|
*/
|
|
if (material->backend == COGL_MATERIAL_BACKEND_FIXED)
|
|
_cogl_material_set_backend (material, COGL_MATERIAL_BACKEND_UNDEFINED);
|
|
|
|
if (material->backend != COGL_MATERIAL_BACKEND_UNDEFINED &&
|
|
backends[material->backend]->material_pre_change_notify)
|
|
backends[material->backend]->material_pre_change_notify (material,
|
|
change,
|
|
new_color);
|
|
|
|
/*
|
|
* There is an arbitrary tree of descendants of this material; any of
|
|
* which may indirectly depend on this material as the authority for
|
|
* some set of properties. (Meaning for example that one of its
|
|
* descendants derives its color or blending state from this
|
|
* material.)
|
|
*
|
|
* We can't modify any property that this material is the authority
|
|
* for unless we create another material to take its place first and
|
|
* make sure descendants reference this new material instead.
|
|
*/
|
|
if (has_strong_children (material))
|
|
{
|
|
CoglMaterial *new_authority;
|
|
|
|
COGL_STATIC_COUNTER (material_copy_on_write_counter,
|
|
"material copy on write counter",
|
|
"Increments each time a material "
|
|
"must be copied to allow modification",
|
|
0 /* no application private data */);
|
|
|
|
COGL_COUNTER_INC (_cogl_uprof_context, material_copy_on_write_counter);
|
|
|
|
new_authority =
|
|
cogl_material_copy (_cogl_material_get_parent (material));
|
|
_cogl_material_set_static_breadcrumb (new_authority,
|
|
"pre_change_notify:copy-on-write");
|
|
|
|
/* We could explicitly walk the descendants, OR together the set
|
|
* of differences that we determine this material is the
|
|
* authority on and only copy those differences copied across.
|
|
*
|
|
* Or, if we don't explicitly walk the descendants we at least
|
|
* know that material->differences represents the largest set of
|
|
* differences that this material could possibly be an authority
|
|
* on.
|
|
*
|
|
* We do the later just because it's simplest, but we might need
|
|
* to come back to this later...
|
|
*/
|
|
_cogl_material_copy_differences (new_authority, material,
|
|
material->differences);
|
|
|
|
/* Reparent the strong children of material to be children of
|
|
* new_authority instead... */
|
|
_cogl_material_node_foreach_child (COGL_MATERIAL_NODE (material),
|
|
reparent_strong_children_cb,
|
|
new_authority);
|
|
|
|
/* The children will keep the new authority alive so drop the
|
|
* reference we got when copying... */
|
|
cogl_object_unref (new_authority);
|
|
}
|
|
|
|
/* At this point we know we have a material with no strong
|
|
* dependants (though we may have some weak children) so we are now
|
|
* free to modify the material. */
|
|
|
|
material->age++;
|
|
|
|
/* If the material isn't already an authority for the state group
|
|
* being modified then we need to initialize the corresponding
|
|
* state. */
|
|
if (change & COGL_MATERIAL_STATE_ALL_SPARSE)
|
|
authority = _cogl_material_get_authority (material, change);
|
|
else
|
|
authority = material;
|
|
_cogl_material_initialize_state (material, authority, change);
|
|
|
|
/* Each material has a sorted cache of the layers it depends on
|
|
* which will need updating via _cogl_material_update_layers_cache
|
|
* if a material's layers are changed. */
|
|
if (change == COGL_MATERIAL_STATE_LAYERS)
|
|
recursively_free_layer_caches (material);
|
|
|
|
/* If the material being changed is the same as the last material we
|
|
* flushed then we keep a track of the changes so we can try to
|
|
* minimize redundant OpenGL calls if the same material is flushed
|
|
* again.
|
|
*/
|
|
if (ctx->current_material == material)
|
|
ctx->current_material_changes_since_flush |= change;
|
|
}
|
|
|
|
|
|
static void
|
|
_cogl_material_add_layer_difference (CoglMaterial *material,
|
|
CoglMaterialLayer *layer,
|
|
gboolean inc_n_layers)
|
|
{
|
|
g_return_if_fail (layer->owner == NULL);
|
|
|
|
layer->owner = material;
|
|
cogl_object_ref (layer);
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the material has no dependants so it may be modified.
|
|
* - If the material isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_material_pre_change_notify (material,
|
|
COGL_MATERIAL_STATE_LAYERS,
|
|
NULL);
|
|
|
|
material->differences |= COGL_MATERIAL_STATE_LAYERS;
|
|
|
|
material->layer_differences =
|
|
g_list_prepend (material->layer_differences, layer);
|
|
|
|
if (inc_n_layers)
|
|
material->n_layers++;
|
|
}
|
|
|
|
/* NB: If you are calling this it's your responsibility to have
|
|
* already called:
|
|
* _cogl_material_pre_change_notify (m, _CHANGE_LAYERS, NULL);
|
|
*/
|
|
static void
|
|
_cogl_material_remove_layer_difference (CoglMaterial *material,
|
|
CoglMaterialLayer *layer,
|
|
gboolean dec_n_layers)
|
|
{
|
|
g_return_if_fail (layer->owner == material);
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the material has no dependants so it may be modified.
|
|
* - If the material isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_material_pre_change_notify (material,
|
|
COGL_MATERIAL_STATE_LAYERS,
|
|
NULL);
|
|
|
|
layer->owner = NULL;
|
|
cogl_object_unref (layer);
|
|
|
|
material->differences |= COGL_MATERIAL_STATE_LAYERS;
|
|
|
|
material->layer_differences =
|
|
g_list_remove (material->layer_differences, layer);
|
|
|
|
if (dec_n_layers)
|
|
material->n_layers--;
|
|
}
|
|
|
|
static void
|
|
_cogl_material_try_reverting_layers_authority (CoglMaterial *authority,
|
|
CoglMaterial *old_authority)
|
|
{
|
|
if (authority->layer_differences == NULL &&
|
|
_cogl_material_get_parent (authority))
|
|
{
|
|
/* If the previous _STATE_LAYERS authority has the same
|
|
* ->n_layers then we can revert to that being the authority
|
|
* again. */
|
|
if (!old_authority)
|
|
{
|
|
old_authority =
|
|
_cogl_material_get_authority (_cogl_material_get_parent (authority),
|
|
COGL_MATERIAL_STATE_LAYERS);
|
|
}
|
|
|
|
if (old_authority->n_layers == authority->n_layers)
|
|
authority->differences &= ~COGL_MATERIAL_STATE_LAYERS;
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
handle_automatic_blend_enable (CoglMaterial *material,
|
|
CoglMaterialState change)
|
|
{
|
|
gboolean blend_enable =
|
|
_cogl_material_needs_blending_enabled (material, change, NULL);
|
|
|
|
if (blend_enable != material->real_blend_enable)
|
|
{
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the material has no dependants so it may be
|
|
* modified.
|
|
* - If the material isn't currently an authority for the state
|
|
* being changed, then initialize that state from the current
|
|
* authority.
|
|
*/
|
|
_cogl_material_pre_change_notify (material,
|
|
COGL_MATERIAL_STATE_REAL_BLEND_ENABLE,
|
|
NULL);
|
|
material->real_blend_enable = blend_enable;
|
|
}
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
int keep_n;
|
|
int current_pos;
|
|
gboolean needs_pruning;
|
|
int first_index_to_prune;
|
|
} CoglMaterialPruneLayersInfo;
|
|
|
|
static gboolean
|
|
update_prune_layers_info_cb (CoglMaterialLayer *layer, void *user_data)
|
|
{
|
|
CoglMaterialPruneLayersInfo *state = user_data;
|
|
|
|
if (state->current_pos == state->keep_n)
|
|
{
|
|
state->needs_pruning = TRUE;
|
|
state->first_index_to_prune = layer->index;
|
|
return FALSE;
|
|
}
|
|
state->current_pos++;
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
_cogl_material_prune_to_n_layers (CoglMaterial *material, int n)
|
|
{
|
|
CoglMaterialPruneLayersInfo state;
|
|
gboolean notified_change = TRUE;
|
|
GList *l;
|
|
GList *next;
|
|
|
|
state.keep_n = n;
|
|
state.current_pos = 0;
|
|
state.needs_pruning = FALSE;
|
|
_cogl_material_foreach_layer (material,
|
|
update_prune_layers_info_cb,
|
|
&state);
|
|
|
|
material->n_layers = n;
|
|
|
|
if (!state.needs_pruning)
|
|
return;
|
|
|
|
if (!(material->differences & COGL_MATERIAL_STATE_LAYERS))
|
|
return;
|
|
|
|
/* It's possible that this material owns some of the layers being
|
|
* discarded, so we'll need to unlink them... */
|
|
for (l = material->layer_differences; l; l = next)
|
|
{
|
|
CoglMaterialLayer *layer = l->data;
|
|
next = l->next; /* we're modifying the list we're iterating */
|
|
|
|
if (layer->index > state.first_index_to_prune)
|
|
{
|
|
if (!notified_change)
|
|
{
|
|
/* - Flush journal primitives referencing the current
|
|
* state.
|
|
* - Make sure the material has no dependants so it may
|
|
* be modified.
|
|
* - If the material isn't currently an authority for
|
|
* the state being changed, then initialize that state
|
|
* from the current authority.
|
|
*/
|
|
_cogl_material_pre_change_notify (material,
|
|
COGL_MATERIAL_STATE_LAYERS,
|
|
NULL);
|
|
notified_change = TRUE;
|
|
}
|
|
|
|
material->layer_differences =
|
|
g_list_delete_link (material->layer_differences, l);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
_cogl_material_backend_layer_change_notify (CoglMaterialLayer *layer,
|
|
CoglMaterialLayerState change)
|
|
{
|
|
int i;
|
|
|
|
/* NB: layers may be used by multiple materials which may be using
|
|
* different backends, therefore we determine which backends to
|
|
* notify based on the private state pointers for each backend...
|
|
*/
|
|
for (i = 0; i < COGL_MATERIAL_N_BACKENDS; i++)
|
|
{
|
|
if (layer->backend_priv[i] && backends[i]->layer_pre_change_notify)
|
|
backends[i]->layer_pre_change_notify (layer, change);
|
|
}
|
|
}
|
|
|
|
unsigned int
|
|
_cogl_get_n_args_for_combine_func (GLint func)
|
|
{
|
|
switch (func)
|
|
{
|
|
case GL_REPLACE:
|
|
return 1;
|
|
case GL_MODULATE:
|
|
case GL_ADD:
|
|
case GL_ADD_SIGNED:
|
|
case GL_SUBTRACT:
|
|
case GL_DOT3_RGB:
|
|
case GL_DOT3_RGBA:
|
|
return 2;
|
|
case GL_INTERPOLATE:
|
|
return 3;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
_cogl_material_layer_initialize_state (CoglMaterialLayer *dest,
|
|
CoglMaterialLayer *src,
|
|
unsigned long differences)
|
|
{
|
|
CoglMaterialLayerBigState *big_state;
|
|
|
|
dest->differences |= differences;
|
|
|
|
if (differences & COGL_MATERIAL_LAYER_STATE_UNIT)
|
|
dest->unit_index = src->unit_index;
|
|
|
|
if (differences & COGL_MATERIAL_LAYER_STATE_TEXTURE)
|
|
dest->texture = src->texture;
|
|
|
|
if (differences & COGL_MATERIAL_LAYER_STATE_FILTERS)
|
|
{
|
|
dest->min_filter = src->min_filter;
|
|
dest->mag_filter = src->mag_filter;
|
|
}
|
|
|
|
if (differences & COGL_MATERIAL_LAYER_STATE_WRAP_MODES)
|
|
{
|
|
dest->wrap_mode_s = src->wrap_mode_s;
|
|
dest->wrap_mode_t = src->wrap_mode_t;
|
|
dest->wrap_mode_p = src->wrap_mode_p;
|
|
}
|
|
|
|
if (differences & COGL_MATERIAL_LAYER_STATE_NEEDS_BIG_STATE)
|
|
{
|
|
if (!dest->has_big_state)
|
|
{
|
|
dest->big_state = g_slice_new (CoglMaterialLayerBigState);
|
|
dest->has_big_state = TRUE;
|
|
}
|
|
big_state = dest->big_state;
|
|
}
|
|
else
|
|
return;
|
|
|
|
if (differences & COGL_MATERIAL_LAYER_STATE_COMBINE)
|
|
{
|
|
int n_args;
|
|
int i;
|
|
GLint func = src->big_state->texture_combine_rgb_func;
|
|
big_state->texture_combine_rgb_func = func;
|
|
n_args = _cogl_get_n_args_for_combine_func (func);
|
|
for (i = 0; i < n_args; i++)
|
|
{
|
|
big_state->texture_combine_rgb_src[i] =
|
|
src->big_state->texture_combine_rgb_src[i];
|
|
big_state->texture_combine_rgb_op[i] =
|
|
src->big_state->texture_combine_rgb_op[i];
|
|
}
|
|
|
|
func = src->big_state->texture_combine_alpha_func;
|
|
big_state->texture_combine_alpha_func = func;
|
|
n_args = _cogl_get_n_args_for_combine_func (func);
|
|
for (i = 0; i < n_args; i++)
|
|
{
|
|
big_state->texture_combine_alpha_src[i] =
|
|
src->big_state->texture_combine_alpha_src[i];
|
|
big_state->texture_combine_alpha_op[i] =
|
|
src->big_state->texture_combine_alpha_op[i];
|
|
}
|
|
}
|
|
|
|
if (differences & COGL_MATERIAL_LAYER_STATE_COMBINE_CONSTANT)
|
|
memcpy (dest->big_state->texture_combine_constant,
|
|
src->big_state->texture_combine_constant,
|
|
sizeof (float) * 4);
|
|
|
|
if (differences & COGL_MATERIAL_LAYER_STATE_USER_MATRIX)
|
|
dest->big_state->matrix = src->big_state->matrix;
|
|
|
|
if (differences & COGL_MATERIAL_LAYER_STATE_POINT_SPRITE_COORDS)
|
|
dest->big_state->point_sprite_coords = src->big_state->point_sprite_coords;
|
|
}
|
|
|
|
/* NB: This function will allocate a new derived layer if you are
|
|
* trying to change the state of a layer with dependants so you must
|
|
* always check the return value.
|
|
*
|
|
* If a new layer is returned it will be owned by required_owner.
|
|
*
|
|
* required_owner can only by NULL for new, currently unowned layers
|
|
* with no dependants.
|
|
*/
|
|
static CoglMaterialLayer *
|
|
_cogl_material_layer_pre_change_notify (CoglMaterial *required_owner,
|
|
CoglMaterialLayer *layer,
|
|
CoglMaterialLayerState change)
|
|
{
|
|
CoglTextureUnit *unit;
|
|
CoglMaterialLayer *authority;
|
|
|
|
/* Identify the case where the layer is new with no owner or
|
|
* dependants and so we don't need to do anything. */
|
|
if (COGL_MATERIAL_NODE (layer)->has_children == FALSE &&
|
|
layer->owner == NULL)
|
|
goto init_layer_state;
|
|
|
|
/* We only allow a NULL required_owner for new layers */
|
|
g_return_val_if_fail (required_owner != NULL, layer);
|
|
|
|
/* Unlike materials; layers are simply considered immutable once
|
|
* they have dependants - either children or another material owner.
|
|
*/
|
|
if (COGL_MATERIAL_NODE (layer)->has_children ||
|
|
layer->owner != required_owner)
|
|
{
|
|
CoglMaterialLayer *new = _cogl_material_layer_copy (layer);
|
|
_cogl_material_add_layer_difference (required_owner, new, FALSE);
|
|
cogl_object_unref (new);
|
|
layer = new;
|
|
goto init_layer_state;
|
|
}
|
|
|
|
/* Note: At this point we know there is only one material dependant on
|
|
* this layer (required_owner), and there are no other layers
|
|
* dependant on this layer so it's ok to modify it. */
|
|
|
|
if (required_owner->journal_ref_count)
|
|
_cogl_journal_flush ();
|
|
|
|
_cogl_material_backend_layer_change_notify (layer, change);
|
|
|
|
/* If the layer being changed is the same as the last layer we
|
|
* flushed to the corresponding texture unit then we keep a track of
|
|
* the changes so we can try to minimize redundant OpenGL calls if
|
|
* the same layer is flushed again.
|
|
*/
|
|
unit = _cogl_get_texture_unit (_cogl_material_layer_get_unit_index (layer));
|
|
if (unit->layer == layer)
|
|
unit->layer_changes_since_flush |= change;
|
|
|
|
init_layer_state:
|
|
|
|
if (required_owner)
|
|
required_owner->age++;
|
|
|
|
/* If the material isn't already an authority for the state group
|
|
* being modified then we need to initialize the corresponding
|
|
* state. */
|
|
authority = _cogl_material_layer_get_authority (layer, change);
|
|
_cogl_material_layer_initialize_state (layer, authority, change);
|
|
|
|
return layer;
|
|
}
|
|
|
|
static void
|
|
_cogl_material_layer_unparent (CoglMaterialNode *layer)
|
|
{
|
|
/* Chain up */
|
|
_cogl_material_node_unparent_real (layer);
|
|
}
|
|
|
|
static void
|
|
_cogl_material_layer_set_parent (CoglMaterialLayer *layer,
|
|
CoglMaterialLayer *parent)
|
|
{
|
|
/* Chain up */
|
|
_cogl_material_node_set_parent_real (COGL_MATERIAL_NODE (layer),
|
|
COGL_MATERIAL_NODE (parent),
|
|
_cogl_material_layer_unparent);
|
|
}
|
|
|
|
/* XXX: This is duplicated logic; the same as for
|
|
* _cogl_material_prune_redundant_ancestry it would be nice to find a
|
|
* way to consolidate these functions! */
|
|
static void
|
|
_cogl_material_layer_prune_redundant_ancestry (CoglMaterialLayer *layer)
|
|
{
|
|
CoglMaterialLayer *new_parent = _cogl_material_layer_get_parent (layer);
|
|
|
|
/* walk up past ancestors that are now redundant and potentially
|
|
* reparent the layer. */
|
|
while (_cogl_material_layer_get_parent (new_parent) &&
|
|
(new_parent->differences | layer->differences) ==
|
|
layer->differences)
|
|
new_parent = _cogl_material_layer_get_parent (new_parent);
|
|
|
|
_cogl_material_layer_set_parent (layer, new_parent);
|
|
}
|
|
|
|
/*
|
|
* XXX: consider special casing layer->unit_index so it's not a sparse
|
|
* property so instead we can assume it's valid for all layer
|
|
* instances.
|
|
* - We would need to initialize ->unit_index in
|
|
* _cogl_material_layer_copy ().
|
|
*
|
|
* XXX: If you use this API you should consider that the given layer
|
|
* might not be writeable and so a new derived layer will be allocated
|
|
* and modified instead. The layer modified will be returned so you
|
|
* can identify when this happens.
|
|
*/
|
|
static CoglMaterialLayer *
|
|
_cogl_material_set_layer_unit (CoglMaterial *required_owner,
|
|
CoglMaterialLayer *layer,
|
|
int unit_index)
|
|
{
|
|
CoglMaterialLayerState change = COGL_MATERIAL_LAYER_STATE_UNIT;
|
|
CoglMaterialLayer *authority =
|
|
_cogl_material_layer_get_authority (layer, change);
|
|
CoglMaterialLayer *new;
|
|
|
|
if (authority->unit_index == unit_index)
|
|
return layer;
|
|
|
|
new =
|
|
_cogl_material_layer_pre_change_notify (required_owner,
|
|
layer,
|
|
change);
|
|
if (new != layer)
|
|
layer = new;
|
|
else
|
|
{
|
|
/* If the layer we found is currently the authority on the state
|
|
* we are changing see if we can revert to one of our ancestors
|
|
* being the authority. */
|
|
if (layer == authority &&
|
|
_cogl_material_layer_get_parent (authority) != NULL)
|
|
{
|
|
CoglMaterialLayer *parent =
|
|
_cogl_material_layer_get_parent (authority);
|
|
CoglMaterialLayer *old_authority =
|
|
_cogl_material_layer_get_authority (parent, change);
|
|
|
|
if (old_authority->unit_index == unit_index)
|
|
{
|
|
layer->differences &= ~change;
|
|
return layer;
|
|
}
|
|
}
|
|
}
|
|
|
|
layer->unit_index = unit_index;
|
|
|
|
/* If we weren't previously the authority on this state then we need
|
|
* to extended our differences mask and so it's possible that some
|
|
* of our ancestry will now become redundant, so we aim to reparent
|
|
* ourselves if that's true... */
|
|
if (layer != authority)
|
|
{
|
|
layer->differences |= change;
|
|
_cogl_material_layer_prune_redundant_ancestry (layer);
|
|
}
|
|
|
|
return layer;
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
/* The layer we are trying to find */
|
|
int layer_index;
|
|
|
|
/* The layer we find or untouched if not found */
|
|
CoglMaterialLayer *layer;
|
|
|
|
/* If the layer can't be found then a new layer should be
|
|
* inserted after this texture unit index... */
|
|
int insert_after;
|
|
|
|
/* When adding a layer we need the list of layers to shift up
|
|
* to a new texture unit. When removing we need the list of
|
|
* layers to shift down.
|
|
*
|
|
* Note: the list isn't sorted */
|
|
CoglMaterialLayer **layers_to_shift;
|
|
int n_layers_to_shift;
|
|
|
|
/* When adding a layer we don't need a complete list of
|
|
* layers_to_shift if we find a layer already corresponding to the
|
|
* layer_index. */
|
|
gboolean ignore_shift_layers_if_found;
|
|
|
|
} CoglMaterialLayerInfo;
|
|
|
|
/* Returns TRUE once we know there is nothing more to update */
|
|
static gboolean
|
|
update_layer_info (CoglMaterialLayer *layer,
|
|
CoglMaterialLayerInfo *layer_info)
|
|
{
|
|
if (layer->index == layer_info->layer_index)
|
|
{
|
|
layer_info->layer = layer;
|
|
if (layer_info->ignore_shift_layers_if_found)
|
|
return TRUE;
|
|
}
|
|
else if (layer->index < layer_info->layer_index)
|
|
{
|
|
int unit_index = _cogl_material_layer_get_unit_index (layer);
|
|
layer_info->insert_after = unit_index;
|
|
}
|
|
else
|
|
layer_info->layers_to_shift[layer_info->n_layers_to_shift++] =
|
|
layer;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/* Returns FALSE to break out of a _foreach_layer () iteration */
|
|
static gboolean
|
|
update_layer_info_cb (CoglMaterialLayer *layer,
|
|
void *user_data)
|
|
{
|
|
CoglMaterialLayerInfo *layer_info = user_data;
|
|
|
|
if (update_layer_info (layer, layer_info))
|
|
return FALSE; /* break */
|
|
else
|
|
return TRUE; /* continue */
|
|
}
|
|
|
|
static void
|
|
_cogl_material_get_layer_info (CoglMaterial *material,
|
|
CoglMaterialLayerInfo *layer_info)
|
|
{
|
|
/* Note: we are assuming this material is a _STATE_LAYERS authority */
|
|
int n_layers = material->n_layers;
|
|
int i;
|
|
|
|
/* FIXME: _cogl_material_foreach_layer now calls
|
|
* _cogl_material_update_layers_cache anyway so this codepath is
|
|
* pointless! */
|
|
if (layer_info->ignore_shift_layers_if_found &&
|
|
material->layers_cache_dirty)
|
|
{
|
|
/* The expectation is that callers of
|
|
* _cogl_material_get_layer_info are likely to be modifying the
|
|
* list of layers associated with a material so in this case
|
|
* where we don't have a cache of the layers and we don't
|
|
* necessarily have to iterate all the layers of the material we
|
|
* use a foreach_layer callback instead of updating the cache
|
|
* and iterating that as below. */
|
|
_cogl_material_foreach_layer (material,
|
|
update_layer_info_cb,
|
|
layer_info);
|
|
return;
|
|
}
|
|
|
|
_cogl_material_update_layers_cache (material);
|
|
for (i = 0; i < n_layers; i++)
|
|
{
|
|
CoglMaterialLayer *layer = material->layers_cache[i];
|
|
|
|
if (update_layer_info (layer, layer_info))
|
|
return;
|
|
}
|
|
}
|
|
|
|
static CoglMaterialLayer *
|
|
_cogl_material_get_layer (CoglMaterial *material,
|
|
int layer_index)
|
|
{
|
|
CoglMaterial *authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_LAYERS);
|
|
CoglMaterialLayerInfo layer_info;
|
|
CoglMaterialLayer *layer;
|
|
int unit_index;
|
|
int i;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NULL);
|
|
|
|
/* The layer index of the layer we want info about */
|
|
layer_info.layer_index = layer_index;
|
|
|
|
/* If a layer already exists with the given index this will be
|
|
* updated. */
|
|
layer_info.layer = NULL;
|
|
|
|
/* If a layer isn't found for the given index we'll need to know
|
|
* where to insert a new layer. */
|
|
layer_info.insert_after = -1;
|
|
|
|
/* If a layer can't be found then we'll need to insert a new layer
|
|
* and bump up the texture unit for all layers with an index
|
|
* > layer_index. */
|
|
layer_info.layers_to_shift =
|
|
g_alloca (sizeof (CoglMaterialLayer *) * authority->n_layers);
|
|
layer_info.n_layers_to_shift = 0;
|
|
|
|
/* If an exact match is found though we don't need a complete
|
|
* list of layers with indices > layer_index... */
|
|
layer_info.ignore_shift_layers_if_found = TRUE;
|
|
|
|
_cogl_material_get_layer_info (authority, &layer_info);
|
|
|
|
if (layer_info.layer)
|
|
return layer_info.layer;
|
|
|
|
unit_index = layer_info.insert_after + 1;
|
|
if (unit_index == 0)
|
|
layer = _cogl_material_layer_copy (ctx->default_layer_0);
|
|
else
|
|
{
|
|
CoglMaterialLayer *new;
|
|
layer = _cogl_material_layer_copy (ctx->default_layer_n);
|
|
new = _cogl_material_set_layer_unit (NULL, layer, unit_index);
|
|
/* Since we passed a newly allocated layer we wouldn't expect
|
|
* _set_layer_unit() to have to allocate *another* layer. */
|
|
g_assert (new == layer);
|
|
}
|
|
layer->index = layer_index;
|
|
|
|
for (i = 0; i < layer_info.n_layers_to_shift; i++)
|
|
{
|
|
CoglMaterialLayer *shift_layer = layer_info.layers_to_shift[i];
|
|
|
|
unit_index = _cogl_material_layer_get_unit_index (shift_layer);
|
|
_cogl_material_set_layer_unit (material, shift_layer, unit_index + 1);
|
|
/* NB: shift_layer may not be writeable so _set_layer_unit()
|
|
* will allocate a derived layer internally which will become
|
|
* owned by material. Check the return value if we need to do
|
|
* anything else with this layer. */
|
|
}
|
|
|
|
_cogl_material_add_layer_difference (material, layer, TRUE);
|
|
|
|
cogl_object_unref (layer);
|
|
|
|
return layer;
|
|
}
|
|
|
|
CoglHandle
|
|
_cogl_material_layer_get_texture (CoglMaterialLayer *layer)
|
|
{
|
|
CoglMaterialLayer *authority =
|
|
_cogl_material_layer_get_authority (layer,
|
|
COGL_MATERIAL_LAYER_STATE_TEXTURE);
|
|
|
|
return authority->texture;
|
|
}
|
|
|
|
static void
|
|
_cogl_material_prune_empty_layer_difference (CoglMaterial *layers_authority,
|
|
CoglMaterialLayer *layer)
|
|
{
|
|
/* Find the GList link that references the empty layer */
|
|
GList *link = g_list_find (layers_authority->layer_differences, layer);
|
|
/* No material directly owns the root node layer so this is safe... */
|
|
CoglMaterialLayer *layer_parent = _cogl_material_layer_get_parent (layer);
|
|
CoglMaterialLayerInfo layer_info;
|
|
CoglMaterial *old_layers_authority;
|
|
|
|
g_return_if_fail (link != NULL);
|
|
|
|
/* If the layer's parent doesn't have an owner then we can simply
|
|
* take ownership ourselves and drop our reference on the empty
|
|
* layer.
|
|
*/
|
|
if (layer_parent->index == layer->index && layer_parent->owner == NULL)
|
|
{
|
|
cogl_object_ref (layer_parent);
|
|
link->data = _cogl_material_layer_get_parent (layer);
|
|
cogl_object_unref (layer);
|
|
recursively_free_layer_caches (layers_authority);
|
|
return;
|
|
}
|
|
|
|
/* Now we want to find the layer that would become the authority for
|
|
* layer->index if we were to remove layer from
|
|
* layers_authority->layer_differences
|
|
*/
|
|
|
|
/* The layer index of the layer we want info about */
|
|
layer_info.layer_index = layer->index;
|
|
|
|
/* If a layer already exists with the given index this will be
|
|
* updated. */
|
|
layer_info.layer = NULL;
|
|
|
|
/* If a layer can't be found then we'll need to insert a new layer
|
|
* and bump up the texture unit for all layers with an index
|
|
* > layer_index. */
|
|
layer_info.layers_to_shift =
|
|
g_alloca (sizeof (CoglMaterialLayer *) * layers_authority->n_layers);
|
|
layer_info.n_layers_to_shift = 0;
|
|
|
|
/* If an exact match is found though we don't need a complete
|
|
* list of layers with indices > layer_index... */
|
|
layer_info.ignore_shift_layers_if_found = TRUE;
|
|
|
|
/* We know the default/root material isn't a LAYERS authority so it's
|
|
* safe to use the result of _cogl_material_get_parent (layers_authority)
|
|
* without checking it.
|
|
*/
|
|
old_layers_authority =
|
|
_cogl_material_get_authority (_cogl_material_get_parent (layers_authority),
|
|
COGL_MATERIAL_STATE_LAYERS);
|
|
|
|
_cogl_material_get_layer_info (old_layers_authority, &layer_info);
|
|
|
|
/* If layer is the defining layer for the corresponding ->index then
|
|
* we can't get rid of it. */
|
|
if (!layer_info.layer)
|
|
return;
|
|
|
|
/* If the layer that would become the authority for layer->index is
|
|
* _cogl_material_layer_get_parent (layer) then we can simply remove the
|
|
* layer difference. */
|
|
if (layer_info.layer == _cogl_material_layer_get_parent (layer))
|
|
{
|
|
_cogl_material_remove_layer_difference (layers_authority, layer, FALSE);
|
|
_cogl_material_try_reverting_layers_authority (layers_authority,
|
|
old_layers_authority);
|
|
}
|
|
}
|
|
|
|
static void
|
|
_cogl_material_set_layer_texture (CoglMaterial *material,
|
|
int layer_index,
|
|
CoglHandle texture,
|
|
gboolean overriden,
|
|
GLuint slice_gl_texture,
|
|
GLenum slice_gl_target)
|
|
{
|
|
CoglMaterialLayerState change = COGL_MATERIAL_LAYER_STATE_TEXTURE;
|
|
CoglMaterialLayer *layer;
|
|
CoglMaterialLayer *authority;
|
|
CoglMaterialLayer *new;
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* material. If the layer is created then it will be owned by
|
|
* material. */
|
|
layer = _cogl_material_get_layer (material, layer_index);
|
|
|
|
/* Now find the ancestor of the layer that is the authority for the
|
|
* state we want to change */
|
|
authority = _cogl_material_layer_get_authority (layer, change);
|
|
|
|
if (authority->texture_overridden == overriden &&
|
|
authority->texture == texture &&
|
|
(authority->texture_overridden == FALSE ||
|
|
(authority->slice_gl_texture == slice_gl_texture &&
|
|
authority->slice_gl_target == slice_gl_target)))
|
|
return;
|
|
|
|
new = _cogl_material_layer_pre_change_notify (material, layer, change);
|
|
if (new != layer)
|
|
layer = new;
|
|
else
|
|
{
|
|
/* If the original layer we found is currently the authority on
|
|
* the state we are changing see if we can revert to one of our
|
|
* ancestors being the authority. */
|
|
if (layer == authority &&
|
|
_cogl_material_layer_get_parent (authority) != NULL)
|
|
{
|
|
CoglMaterialLayer *parent =
|
|
_cogl_material_layer_get_parent (authority);
|
|
CoglMaterialLayer *old_authority =
|
|
_cogl_material_layer_get_authority (parent, change);
|
|
|
|
if (old_authority->texture_overridden == overriden &&
|
|
old_authority->texture == texture &&
|
|
(old_authority->texture_overridden == FALSE ||
|
|
(old_authority->slice_gl_texture == slice_gl_texture &&
|
|
old_authority->slice_gl_target == slice_gl_target)))
|
|
{
|
|
layer->differences &= ~change;
|
|
|
|
g_assert (layer->owner == material);
|
|
if (layer->differences == 0)
|
|
_cogl_material_prune_empty_layer_difference (material,
|
|
layer);
|
|
goto changed;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (texture != COGL_INVALID_HANDLE)
|
|
cogl_handle_ref (texture);
|
|
if (layer == authority &&
|
|
layer->texture != COGL_INVALID_HANDLE)
|
|
cogl_handle_unref (layer->texture);
|
|
layer->texture = texture;
|
|
layer->texture_overridden = overriden;
|
|
layer->slice_gl_texture = slice_gl_texture;
|
|
layer->slice_gl_target = slice_gl_target;
|
|
|
|
/* If we weren't previously the authority on this state then we need
|
|
* to extended our differences mask and so it's possible that some
|
|
* of our ancestry will now become redundant, so we aim to reparent
|
|
* ourselves if that's true... */
|
|
if (layer != authority)
|
|
{
|
|
layer->differences |= change;
|
|
_cogl_material_layer_prune_redundant_ancestry (layer);
|
|
}
|
|
|
|
changed:
|
|
|
|
handle_automatic_blend_enable (material, COGL_MATERIAL_STATE_LAYERS);
|
|
}
|
|
|
|
static void
|
|
_cogl_material_set_layer_gl_texture_slice (CoglMaterial *material,
|
|
int layer_index,
|
|
CoglHandle texture,
|
|
GLuint slice_gl_texture,
|
|
GLenum slice_gl_target)
|
|
{
|
|
g_return_if_fail (cogl_is_material (material));
|
|
/* GL texture overrides can only be set in association with a parent
|
|
* CoglTexture */
|
|
g_return_if_fail (cogl_is_texture (texture));
|
|
|
|
_cogl_material_set_layer_texture (material,
|
|
layer_index,
|
|
texture,
|
|
TRUE, /* slice override */
|
|
slice_gl_texture,
|
|
slice_gl_target);
|
|
}
|
|
|
|
/* XXX: deprecate and replace with cogl_material_set_layer_texture?
|
|
*
|
|
* Originally I was planning on allowing users to set shaders somehow
|
|
* on layers (thus the ambiguous name), but now I wonder if we will do
|
|
* that with a more explicit "snippets" API and materials will have
|
|
* hooks defined to receive these snippets.
|
|
*/
|
|
void
|
|
cogl_material_set_layer (CoglMaterial *material,
|
|
int layer_index,
|
|
CoglHandle texture)
|
|
{
|
|
g_return_if_fail (cogl_is_material (material));
|
|
g_return_if_fail (texture == COGL_INVALID_HANDLE ||
|
|
cogl_is_texture (texture));
|
|
|
|
_cogl_material_set_layer_texture (material,
|
|
layer_index,
|
|
texture,
|
|
FALSE, /* slice override */
|
|
0, /* slice_gl_texture */
|
|
0); /* slice_gl_target */
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
int i;
|
|
CoglMaterial *material;
|
|
unsigned long fallback_layers;
|
|
} CoglMaterialFallbackState;
|
|
|
|
static gboolean
|
|
fallback_layer_cb (CoglMaterialLayer *layer, void *user_data)
|
|
{
|
|
CoglMaterialFallbackState *state = user_data;
|
|
CoglMaterial *material = state->material;
|
|
CoglHandle texture = _cogl_material_layer_get_texture (layer);
|
|
GLenum gl_target;
|
|
COGL_STATIC_COUNTER (layer_fallback_counter,
|
|
"layer fallback counter",
|
|
"Increments each time a layer's texture is "
|
|
"forced to a fallback texture",
|
|
0 /* no application private data */);
|
|
|
|
_COGL_GET_CONTEXT (ctx, FALSE);
|
|
|
|
if (!(state->fallback_layers & 1<<state->i))
|
|
return TRUE;
|
|
|
|
COGL_COUNTER_INC (_cogl_uprof_context, layer_fallback_counter);
|
|
|
|
if (G_LIKELY (texture != COGL_INVALID_HANDLE))
|
|
cogl_texture_get_gl_texture (texture, NULL, &gl_target);
|
|
else
|
|
gl_target = GL_TEXTURE_2D;
|
|
|
|
if (gl_target == GL_TEXTURE_2D)
|
|
texture = ctx->default_gl_texture_2d_tex;
|
|
#ifdef HAVE_COGL_GL
|
|
else if (gl_target == GL_TEXTURE_RECTANGLE_ARB)
|
|
texture = ctx->default_gl_texture_rect_tex;
|
|
#endif
|
|
else
|
|
{
|
|
g_warning ("We don't have a fallback texture we can use to fill "
|
|
"in for an invalid material layer, since it was "
|
|
"using an unsupported texture target ");
|
|
/* might get away with this... */
|
|
texture = ctx->default_gl_texture_2d_tex;
|
|
}
|
|
|
|
cogl_material_set_layer (material, layer->index, texture);
|
|
|
|
state->i++;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
_cogl_material_set_layer_wrap_modes (CoglMaterial *material,
|
|
CoglMaterialLayer *layer,
|
|
CoglMaterialLayer *authority,
|
|
CoglMaterialWrapModeInternal wrap_mode_s,
|
|
CoglMaterialWrapModeInternal wrap_mode_t,
|
|
CoglMaterialWrapModeInternal wrap_mode_p)
|
|
{
|
|
CoglMaterialLayer *new;
|
|
CoglMaterialLayerState change = COGL_MATERIAL_LAYER_STATE_WRAP_MODES;
|
|
|
|
if (authority->wrap_mode_s == wrap_mode_s &&
|
|
authority->wrap_mode_t == wrap_mode_t &&
|
|
authority->wrap_mode_p == wrap_mode_p)
|
|
return;
|
|
|
|
new = _cogl_material_layer_pre_change_notify (material, layer, change);
|
|
if (new != layer)
|
|
layer = new;
|
|
else
|
|
{
|
|
/* If the original layer we found is currently the authority on
|
|
* the state we are changing see if we can revert to one of our
|
|
* ancestors being the authority. */
|
|
if (layer == authority &&
|
|
_cogl_material_layer_get_parent (authority) != NULL)
|
|
{
|
|
CoglMaterialLayer *parent =
|
|
_cogl_material_layer_get_parent (authority);
|
|
CoglMaterialLayer *old_authority =
|
|
_cogl_material_layer_get_authority (parent, change);
|
|
|
|
if (old_authority->wrap_mode_s == wrap_mode_s &&
|
|
old_authority->wrap_mode_t == wrap_mode_t &&
|
|
old_authority->wrap_mode_p == wrap_mode_p)
|
|
{
|
|
layer->differences &= ~change;
|
|
|
|
g_assert (layer->owner == material);
|
|
if (layer->differences == 0)
|
|
_cogl_material_prune_empty_layer_difference (material,
|
|
layer);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
layer->wrap_mode_s = wrap_mode_s;
|
|
layer->wrap_mode_t = wrap_mode_t;
|
|
layer->wrap_mode_p = wrap_mode_p;
|
|
|
|
/* If we weren't previously the authority on this state then we need
|
|
* to extended our differences mask and so it's possible that some
|
|
* of our ancestry will now become redundant, so we aim to reparent
|
|
* ourselves if that's true... */
|
|
if (layer != authority)
|
|
{
|
|
layer->differences |= change;
|
|
_cogl_material_layer_prune_redundant_ancestry (layer);
|
|
}
|
|
}
|
|
|
|
static CoglMaterialWrapModeInternal
|
|
public_to_internal_wrap_mode (CoglMaterialWrapMode mode)
|
|
{
|
|
return (CoglMaterialWrapModeInternal)mode;
|
|
}
|
|
|
|
static CoglMaterialWrapMode
|
|
internal_to_public_wrap_mode (CoglMaterialWrapModeInternal internal_mode)
|
|
{
|
|
g_return_val_if_fail (internal_mode !=
|
|
COGL_MATERIAL_WRAP_MODE_INTERNAL_CLAMP_TO_BORDER,
|
|
COGL_MATERIAL_WRAP_MODE_AUTOMATIC);
|
|
return (CoglMaterialWrapMode)internal_mode;
|
|
}
|
|
|
|
void
|
|
cogl_material_set_layer_wrap_mode_s (CoglMaterial *material,
|
|
int layer_index,
|
|
CoglMaterialWrapMode mode)
|
|
{
|
|
CoglMaterialLayerState change = COGL_MATERIAL_LAYER_STATE_WRAP_MODES;
|
|
CoglMaterialLayer *layer;
|
|
CoglMaterialLayer *authority;
|
|
CoglMaterialWrapModeInternal internal_mode =
|
|
public_to_internal_wrap_mode (mode);
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* material. If the layer is created then it will be owned by
|
|
* material. */
|
|
layer = _cogl_material_get_layer (material, layer_index);
|
|
|
|
/* Now find the ancestor of the layer that is the authority for the
|
|
* state we want to change */
|
|
authority = _cogl_material_layer_get_authority (layer, change);
|
|
|
|
_cogl_material_set_layer_wrap_modes (material, layer, authority,
|
|
internal_mode,
|
|
authority->wrap_mode_t,
|
|
authority->wrap_mode_p);
|
|
}
|
|
|
|
void
|
|
cogl_material_set_layer_wrap_mode_t (CoglMaterial *material,
|
|
int layer_index,
|
|
CoglMaterialWrapMode mode)
|
|
{
|
|
CoglMaterialLayerState change = COGL_MATERIAL_LAYER_STATE_WRAP_MODES;
|
|
CoglMaterialLayer *layer;
|
|
CoglMaterialLayer *authority;
|
|
CoglMaterialWrapModeInternal internal_mode =
|
|
public_to_internal_wrap_mode (mode);
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* material. If the layer is created then it will be owned by
|
|
* material. */
|
|
layer = _cogl_material_get_layer (material, layer_index);
|
|
|
|
/* Now find the ancestor of the layer that is the authority for the
|
|
* state we want to change */
|
|
authority = _cogl_material_layer_get_authority (layer, change);
|
|
|
|
_cogl_material_set_layer_wrap_modes (material, layer, authority,
|
|
authority->wrap_mode_s,
|
|
internal_mode,
|
|
authority->wrap_mode_p);
|
|
}
|
|
|
|
/* TODO: this should be made public once we add support for 3D
|
|
textures in Cogl */
|
|
/* The rationale for naming the third texture coordinate 'p' instead
|
|
of OpenGL's usual 'r' is that 'r' conflicts with the usual naming
|
|
of the 'red' component when treating a vector as a color. Under
|
|
GLSL this is awkward because the texture swizzling for a vector
|
|
uses a single letter for each component and the names for colors,
|
|
textures and positions are synonymous. GLSL works around this by
|
|
naming the components of the texture s, t, p and q. Cogl already
|
|
effectively already exposes this naming because it exposes GLSL so
|
|
it makes sense to use that naming consistently. Another alternative
|
|
could be u, v and w. This is what Blender and Direct3D use. However
|
|
the w component conflicts with the w component of a position
|
|
vertex. */
|
|
void
|
|
_cogl_material_set_layer_wrap_mode_p (CoglMaterial *material,
|
|
int layer_index,
|
|
CoglMaterialWrapMode mode)
|
|
{
|
|
CoglMaterialLayerState change = COGL_MATERIAL_LAYER_STATE_WRAP_MODES;
|
|
CoglMaterialLayer *layer;
|
|
CoglMaterialLayer *authority;
|
|
CoglMaterialWrapModeInternal internal_mode =
|
|
public_to_internal_wrap_mode (mode);
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* material. If the layer is created then it will be owned by
|
|
* material. */
|
|
layer = _cogl_material_get_layer (material, layer_index);
|
|
|
|
/* Now find the ancestor of the layer that is the authority for the
|
|
* state we want to change */
|
|
authority = _cogl_material_layer_get_authority (layer, change);
|
|
|
|
_cogl_material_set_layer_wrap_modes (material, layer, authority,
|
|
authority->wrap_mode_s,
|
|
authority->wrap_mode_t,
|
|
internal_mode);
|
|
}
|
|
|
|
void
|
|
cogl_material_set_layer_wrap_mode (CoglMaterial *material,
|
|
int layer_index,
|
|
CoglMaterialWrapMode mode)
|
|
{
|
|
CoglMaterialLayerState change = COGL_MATERIAL_LAYER_STATE_WRAP_MODES;
|
|
CoglMaterialLayer *layer;
|
|
CoglMaterialLayer *authority;
|
|
CoglMaterialWrapModeInternal internal_mode =
|
|
public_to_internal_wrap_mode (mode);
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* material. If the layer is created then it will be owned by
|
|
* material. */
|
|
layer = _cogl_material_get_layer (material, layer_index);
|
|
|
|
/* Now find the ancestor of the layer that is the authority for the
|
|
* state we want to change */
|
|
authority = _cogl_material_layer_get_authority (layer, change);
|
|
|
|
_cogl_material_set_layer_wrap_modes (material, layer, authority,
|
|
internal_mode,
|
|
internal_mode,
|
|
internal_mode);
|
|
/* XXX: I wonder if we should really be duplicating the mode into
|
|
* the 'r' wrap mode too? */
|
|
}
|
|
|
|
/* FIXME: deprecate this API */
|
|
CoglMaterialWrapMode
|
|
cogl_material_layer_get_wrap_mode_s (CoglMaterialLayer *layer)
|
|
{
|
|
CoglMaterialLayerState change = COGL_MATERIAL_LAYER_STATE_WRAP_MODES;
|
|
CoglMaterialLayer *authority;
|
|
|
|
g_return_val_if_fail (_cogl_is_material_layer (layer), FALSE);
|
|
|
|
/* Now find the ancestor of the layer that is the authority for the
|
|
* state we want to change */
|
|
authority = _cogl_material_layer_get_authority (layer, change);
|
|
|
|
return internal_to_public_wrap_mode (authority->wrap_mode_s);
|
|
}
|
|
|
|
CoglMaterialWrapMode
|
|
cogl_material_get_layer_wrap_mode_s (CoglMaterial *material, int layer_index)
|
|
{
|
|
CoglMaterialLayer *layer;
|
|
|
|
g_return_val_if_fail (cogl_is_material (material), FALSE);
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* material. If the layer is created then it will be owned by
|
|
* material. */
|
|
layer = _cogl_material_get_layer (material, layer_index);
|
|
/* FIXME: we shouldn't ever construct a layer in a getter function */
|
|
|
|
return cogl_material_layer_get_wrap_mode_s (layer);
|
|
}
|
|
|
|
/* FIXME: deprecate this API */
|
|
CoglMaterialWrapMode
|
|
cogl_material_layer_get_wrap_mode_t (CoglMaterialLayer *layer)
|
|
{
|
|
CoglMaterialLayerState change = COGL_MATERIAL_LAYER_STATE_WRAP_MODES;
|
|
CoglMaterialLayer *authority;
|
|
|
|
g_return_val_if_fail (_cogl_is_material_layer (layer), FALSE);
|
|
|
|
/* Now find the ancestor of the layer that is the authority for the
|
|
* state we want to change */
|
|
authority = _cogl_material_layer_get_authority (layer, change);
|
|
|
|
return internal_to_public_wrap_mode (authority->wrap_mode_t);
|
|
}
|
|
|
|
CoglMaterialWrapMode
|
|
cogl_material_get_layer_wrap_mode_t (CoglMaterial *material, int layer_index)
|
|
{
|
|
CoglMaterialLayer *layer;
|
|
|
|
g_return_val_if_fail (cogl_is_material (material), FALSE);
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* material. If the layer is created then it will be owned by
|
|
* material. */
|
|
layer = _cogl_material_get_layer (material, layer_index);
|
|
/* FIXME: we shouldn't ever construct a layer in a getter function */
|
|
|
|
return cogl_material_layer_get_wrap_mode_t (layer);
|
|
}
|
|
|
|
CoglMaterialWrapMode
|
|
_cogl_material_layer_get_wrap_mode_p (CoglMaterialLayer *layer)
|
|
{
|
|
CoglMaterialLayerState change = COGL_MATERIAL_LAYER_STATE_WRAP_MODES;
|
|
CoglMaterialLayer *authority =
|
|
_cogl_material_layer_get_authority (layer, change);
|
|
|
|
return internal_to_public_wrap_mode (authority->wrap_mode_p);
|
|
}
|
|
|
|
/* TODO: make this public when we expose 3D textures. */
|
|
CoglMaterialWrapMode
|
|
_cogl_material_get_layer_wrap_mode_p (CoglMaterial *material, int layer_index)
|
|
{
|
|
CoglMaterialLayer *layer;
|
|
|
|
g_return_val_if_fail (cogl_is_material (material), FALSE);
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* material. If the layer is created then it will be owned by
|
|
* material. */
|
|
layer = _cogl_material_get_layer (material, layer_index);
|
|
|
|
return _cogl_material_layer_get_wrap_mode_p (layer);
|
|
}
|
|
|
|
static void
|
|
_cogl_material_layer_get_wrap_modes (CoglMaterialLayer *layer,
|
|
CoglMaterialWrapModeInternal *wrap_mode_s,
|
|
CoglMaterialWrapModeInternal *wrap_mode_t,
|
|
CoglMaterialWrapModeInternal *wrap_mode_p)
|
|
{
|
|
CoglMaterialLayer *authority =
|
|
_cogl_material_layer_get_authority (layer,
|
|
COGL_MATERIAL_LAYER_STATE_WRAP_MODES);
|
|
|
|
*wrap_mode_s = authority->wrap_mode_s;
|
|
*wrap_mode_t = authority->wrap_mode_t;
|
|
*wrap_mode_p = authority->wrap_mode_p;
|
|
}
|
|
|
|
gboolean
|
|
cogl_material_set_layer_point_sprite_coords_enabled (CoglMaterial *material,
|
|
int layer_index,
|
|
gboolean enable,
|
|
GError **error)
|
|
{
|
|
CoglMaterialLayerState change =
|
|
COGL_MATERIAL_LAYER_STATE_POINT_SPRITE_COORDS;
|
|
CoglMaterialLayer *layer;
|
|
CoglMaterialLayer *new;
|
|
CoglMaterialLayer *authority;
|
|
|
|
g_return_val_if_fail (cogl_is_material (material), FALSE);
|
|
|
|
/* Don't allow point sprite coordinates to be enabled if the driver
|
|
doesn't support it */
|
|
if (enable && !cogl_features_available (COGL_FEATURE_POINT_SPRITE))
|
|
{
|
|
if (error)
|
|
{
|
|
g_set_error (error, COGL_ERROR, COGL_ERROR_UNSUPPORTED,
|
|
"Point sprite texture coordinates are enabled "
|
|
"for a layer but the GL driver does not support it.");
|
|
}
|
|
else
|
|
{
|
|
static gboolean warning_seen = FALSE;
|
|
if (!warning_seen)
|
|
g_warning ("Point sprite texture coordinates are enabled "
|
|
"for a layer but the GL driver does not support it.");
|
|
warning_seen = TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* material. If the layer is created then it will be owned by
|
|
* material. */
|
|
layer = _cogl_material_get_layer (material, layer_index);
|
|
|
|
/* Now find the ancestor of the layer that is the authority for the
|
|
* state we want to change */
|
|
authority = _cogl_material_layer_get_authority (layer, change);
|
|
|
|
if (authority->big_state->point_sprite_coords == enable)
|
|
return TRUE;
|
|
|
|
new = _cogl_material_layer_pre_change_notify (material, layer, change);
|
|
if (new != layer)
|
|
layer = new;
|
|
else
|
|
{
|
|
/* If the original layer we found is currently the authority on
|
|
* the state we are changing see if we can revert to one of our
|
|
* ancestors being the authority. */
|
|
if (layer == authority &&
|
|
_cogl_material_layer_get_parent (authority) != NULL)
|
|
{
|
|
CoglMaterialLayer *parent =
|
|
_cogl_material_layer_get_parent (authority);
|
|
CoglMaterialLayer *old_authority =
|
|
_cogl_material_layer_get_authority (parent, change);
|
|
|
|
if (old_authority->big_state->point_sprite_coords == enable)
|
|
{
|
|
layer->differences &= ~change;
|
|
|
|
g_assert (layer->owner == material);
|
|
if (layer->differences == 0)
|
|
_cogl_material_prune_empty_layer_difference (material,
|
|
layer);
|
|
return TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
layer->big_state->point_sprite_coords = enable;
|
|
|
|
/* If we weren't previously the authority on this state then we need
|
|
* to extended our differences mask and so it's possible that some
|
|
* of our ancestry will now become redundant, so we aim to reparent
|
|
* ourselves if that's true... */
|
|
if (layer != authority)
|
|
{
|
|
layer->differences |= change;
|
|
_cogl_material_layer_prune_redundant_ancestry (layer);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean
|
|
cogl_material_get_layer_point_sprite_coords_enabled (CoglMaterial *material,
|
|
int layer_index)
|
|
{
|
|
CoglMaterialLayerState change =
|
|
COGL_MATERIAL_LAYER_STATE_POINT_SPRITE_COORDS;
|
|
CoglMaterialLayer *layer;
|
|
CoglMaterialLayer *authority;
|
|
|
|
g_return_val_if_fail (cogl_is_material (material), FALSE);
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* material. If the layer is created then it will be owned by
|
|
* material. */
|
|
layer = _cogl_material_get_layer (material, layer_index);
|
|
/* FIXME: we shouldn't ever construct a layer in a getter function */
|
|
|
|
authority = _cogl_material_layer_get_authority (layer, change);
|
|
|
|
return authority->big_state->point_sprite_coords;
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
CoglMaterial *material;
|
|
CoglMaterialWrapModeOverrides *wrap_mode_overrides;
|
|
int i;
|
|
} CoglMaterialWrapModeOverridesState;
|
|
|
|
static gboolean
|
|
apply_wrap_mode_overrides_cb (CoglMaterialLayer *layer,
|
|
void *user_data)
|
|
{
|
|
CoglMaterialWrapModeOverridesState *state = user_data;
|
|
CoglMaterialLayer *authority =
|
|
_cogl_material_layer_get_authority (layer,
|
|
COGL_MATERIAL_LAYER_STATE_WRAP_MODES);
|
|
CoglMaterialWrapModeInternal wrap_mode_s;
|
|
CoglMaterialWrapModeInternal wrap_mode_t;
|
|
CoglMaterialWrapModeInternal wrap_mode_p;
|
|
|
|
g_return_val_if_fail (state->i < 32, FALSE);
|
|
|
|
wrap_mode_s = state->wrap_mode_overrides->values[state->i].s;
|
|
if (wrap_mode_s == COGL_MATERIAL_WRAP_MODE_OVERRIDE_NONE)
|
|
wrap_mode_s = (CoglMaterialWrapModeInternal)authority->wrap_mode_s;
|
|
wrap_mode_t = state->wrap_mode_overrides->values[state->i].t;
|
|
if (wrap_mode_t == COGL_MATERIAL_WRAP_MODE_OVERRIDE_NONE)
|
|
wrap_mode_t = (CoglMaterialWrapModeInternal)authority->wrap_mode_t;
|
|
wrap_mode_p = state->wrap_mode_overrides->values[state->i].p;
|
|
if (wrap_mode_p == COGL_MATERIAL_WRAP_MODE_OVERRIDE_NONE)
|
|
wrap_mode_p = (CoglMaterialWrapModeInternal)authority->wrap_mode_p;
|
|
|
|
_cogl_material_set_layer_wrap_modes (state->material,
|
|
layer,
|
|
authority,
|
|
wrap_mode_s,
|
|
wrap_mode_t,
|
|
wrap_mode_p);
|
|
|
|
state->i++;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
CoglMaterial *material;
|
|
GLuint gl_texture;
|
|
} CoglMaterialOverrideLayerState;
|
|
|
|
static gboolean
|
|
override_layer_texture_cb (CoglMaterialLayer *layer, void *user_data)
|
|
{
|
|
CoglMaterialOverrideLayerState *state = user_data;
|
|
CoglHandle texture;
|
|
GLenum gl_target;
|
|
|
|
texture = _cogl_material_layer_get_texture (layer);
|
|
|
|
if (texture != COGL_INVALID_HANDLE)
|
|
cogl_texture_get_gl_texture (texture, NULL, &gl_target);
|
|
else
|
|
gl_target = GL_TEXTURE_2D;
|
|
|
|
_cogl_material_set_layer_gl_texture_slice (state->material,
|
|
layer->index,
|
|
texture,
|
|
state->gl_texture,
|
|
gl_target);
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
_cogl_material_apply_overrides (CoglMaterial *material,
|
|
CoglMaterialFlushOptions *options)
|
|
{
|
|
COGL_STATIC_COUNTER (apply_overrides_counter,
|
|
"material overrides counter",
|
|
"Increments each time we have to apply "
|
|
"override options to a material",
|
|
0 /* no application private data */);
|
|
|
|
COGL_COUNTER_INC (_cogl_uprof_context, apply_overrides_counter);
|
|
|
|
if (options->flags & COGL_MATERIAL_FLUSH_DISABLE_MASK)
|
|
{
|
|
int i;
|
|
|
|
/* NB: we can assume that once we see one bit to disable
|
|
* a layer, all subsequent layers are also disabled. */
|
|
for (i = 0; i < 32 && options->disable_layers & (1<<i); i++)
|
|
;
|
|
|
|
_cogl_material_prune_to_n_layers (material, i);
|
|
}
|
|
|
|
if (options->flags & COGL_MATERIAL_FLUSH_FALLBACK_MASK)
|
|
{
|
|
CoglMaterialFallbackState state;
|
|
|
|
state.i = 0;
|
|
state.material = material;
|
|
state.fallback_layers = options->fallback_layers;
|
|
|
|
_cogl_material_foreach_layer (material,
|
|
fallback_layer_cb,
|
|
&state);
|
|
}
|
|
|
|
if (options->flags & COGL_MATERIAL_FLUSH_LAYER0_OVERRIDE)
|
|
{
|
|
CoglMaterialOverrideLayerState state;
|
|
|
|
_cogl_material_prune_to_n_layers (material, 1);
|
|
|
|
/* NB: we are overriding the first layer, but we don't know
|
|
* the user's given layer_index, which is why we use
|
|
* _cogl_material_foreach_layer() here even though we know
|
|
* there's only one layer. */
|
|
state.material = material;
|
|
state.gl_texture = options->layer0_override_texture;
|
|
_cogl_material_foreach_layer (material,
|
|
override_layer_texture_cb,
|
|
&state);
|
|
}
|
|
|
|
if (options->flags & COGL_MATERIAL_FLUSH_WRAP_MODE_OVERRIDES)
|
|
{
|
|
CoglMaterialWrapModeOverridesState state;
|
|
|
|
state.material = material;
|
|
state.wrap_mode_overrides = &options->wrap_mode_overrides;
|
|
state.i = 0;
|
|
_cogl_material_foreach_layer (material,
|
|
apply_wrap_mode_overrides_cb,
|
|
&state);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_material_layer_texture_equal (CoglMaterialLayer *authority0,
|
|
CoglMaterialLayer *authority1)
|
|
{
|
|
if (authority0->texture != authority1->texture)
|
|
return FALSE;
|
|
|
|
if (authority0->texture_overridden != authority1->texture_overridden)
|
|
return FALSE;
|
|
|
|
if (authority0->texture_overridden &&
|
|
(authority0->slice_gl_texture != authority1->slice_gl_texture ||
|
|
authority0->slice_gl_target != authority1->slice_gl_target))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Determine the mask of differences between two layers.
|
|
*
|
|
* XXX: If layers and materials could both be cast to a common Tree
|
|
* type of some kind then we could have a unified
|
|
* compare_differences() function.
|
|
*/
|
|
unsigned long
|
|
_cogl_material_layer_compare_differences (CoglMaterialLayer *layer0,
|
|
CoglMaterialLayer *layer1)
|
|
{
|
|
CoglMaterialLayer *node0;
|
|
CoglMaterialLayer *node1;
|
|
int len0;
|
|
int len1;
|
|
int len0_index;
|
|
int len1_index;
|
|
int count;
|
|
int i;
|
|
CoglMaterialLayer *common_ancestor = NULL;
|
|
unsigned long layers_difference = 0;
|
|
|
|
_COGL_GET_CONTEXT (ctx, 0);
|
|
|
|
/* Algorithm:
|
|
*
|
|
* 1) Walk the ancestors of each layer to the root node, adding a
|
|
* pointer to each ancester node to two GArrays:
|
|
* ctx->material0_nodes, and ctx->material1_nodes.
|
|
*
|
|
* 2) Compare the arrays to find the nodes where they stop to
|
|
* differ.
|
|
*
|
|
* 3) For each array now iterate from index 0 to the first node of
|
|
* difference ORing that nodes ->difference mask into the final
|
|
* material_differences mask.
|
|
*/
|
|
|
|
g_array_set_size (ctx->material0_nodes, 0);
|
|
g_array_set_size (ctx->material1_nodes, 0);
|
|
for (node0 = layer0; node0; node0 = _cogl_material_layer_get_parent (node0))
|
|
g_array_append_vals (ctx->material0_nodes, &node0, 1);
|
|
for (node1 = layer1; node1; node1 = _cogl_material_layer_get_parent (node1))
|
|
g_array_append_vals (ctx->material1_nodes, &node1, 1);
|
|
|
|
len0 = ctx->material0_nodes->len;
|
|
len1 = ctx->material1_nodes->len;
|
|
/* There's no point looking at the last entries since we know both
|
|
* layers must have the same default layer as their root node. */
|
|
len0_index = len0 - 2;
|
|
len1_index = len1 - 2;
|
|
count = MIN (len0, len1) - 1;
|
|
for (i = 0; i < count; i++)
|
|
{
|
|
node0 = g_array_index (ctx->material0_nodes,
|
|
CoglMaterialLayer *, len0_index--);
|
|
node1 = g_array_index (ctx->material1_nodes,
|
|
CoglMaterialLayer *, len1_index--);
|
|
if (node0 != node1)
|
|
{
|
|
common_ancestor = _cogl_material_layer_get_parent (node0);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* If we didn't already find the first the common_ancestor ancestor
|
|
* that's because one material is a direct descendant of the other
|
|
* and in this case the first common ancestor is the last node we
|
|
* looked at. */
|
|
if (!common_ancestor)
|
|
common_ancestor = node0;
|
|
|
|
count = len0 - 1;
|
|
for (i = 0; i < count; i++)
|
|
{
|
|
node0 = g_array_index (ctx->material0_nodes, CoglMaterialLayer *, i);
|
|
if (node0 == common_ancestor)
|
|
break;
|
|
layers_difference |= node0->differences;
|
|
}
|
|
|
|
count = len1 - 1;
|
|
for (i = 0; i < count; i++)
|
|
{
|
|
node1 = g_array_index (ctx->material1_nodes, CoglMaterialLayer *, i);
|
|
if (node1 == common_ancestor)
|
|
break;
|
|
layers_difference |= node1->differences;
|
|
}
|
|
|
|
return layers_difference;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_material_layer_combine_state_equal (CoglMaterialLayer *authority0,
|
|
CoglMaterialLayer *authority1)
|
|
{
|
|
CoglMaterialLayerBigState *big_state0 = authority0->big_state;
|
|
CoglMaterialLayerBigState *big_state1 = authority1->big_state;
|
|
int n_args;
|
|
int i;
|
|
|
|
if (big_state0->texture_combine_rgb_func !=
|
|
big_state1->texture_combine_rgb_func)
|
|
return FALSE;
|
|
|
|
if (big_state0->texture_combine_alpha_func !=
|
|
big_state1->texture_combine_alpha_func)
|
|
return FALSE;
|
|
|
|
n_args =
|
|
_cogl_get_n_args_for_combine_func (big_state0->texture_combine_rgb_func);
|
|
for (i = 0; i < n_args; i++)
|
|
{
|
|
if ((big_state0->texture_combine_rgb_src[i] !=
|
|
big_state1->texture_combine_rgb_src[i]) ||
|
|
(big_state0->texture_combine_rgb_op[i] !=
|
|
big_state1->texture_combine_rgb_op[i]))
|
|
return FALSE;
|
|
}
|
|
|
|
n_args =
|
|
_cogl_get_n_args_for_combine_func (big_state0->texture_combine_alpha_func);
|
|
for (i = 0; i < n_args; i++)
|
|
{
|
|
if ((big_state0->texture_combine_alpha_src[i] !=
|
|
big_state1->texture_combine_alpha_src[i]) ||
|
|
(big_state0->texture_combine_alpha_op[i] !=
|
|
big_state1->texture_combine_alpha_op[i]))
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_material_layer_combine_constant_equal (CoglMaterialLayer *authority0,
|
|
CoglMaterialLayer *authority1)
|
|
{
|
|
return memcmp (authority0->big_state->texture_combine_constant,
|
|
authority1->big_state->texture_combine_constant,
|
|
sizeof (float) * 4) == 0 ? TRUE : FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_material_layer_filters_equal (CoglMaterialLayer *authority0,
|
|
CoglMaterialLayer *authority1)
|
|
{
|
|
if (authority0->mag_filter != authority1->mag_filter)
|
|
return FALSE;
|
|
if (authority0->min_filter != authority1->min_filter)
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_material_layer_wrap_modes_equal (CoglMaterialLayer *authority0,
|
|
CoglMaterialLayer *authority1)
|
|
{
|
|
if (authority0->wrap_mode_s != authority1->wrap_mode_s ||
|
|
authority0->wrap_mode_t != authority1->wrap_mode_t ||
|
|
authority0->wrap_mode_p != authority1->wrap_mode_p)
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_material_layer_user_matrix_equal (CoglMaterialLayer *authority0,
|
|
CoglMaterialLayer *authority1)
|
|
{
|
|
CoglMaterialLayerBigState *big_state0 = authority0->big_state;
|
|
CoglMaterialLayerBigState *big_state1 = authority1->big_state;
|
|
|
|
if (!cogl_matrix_equal (&big_state0->matrix, &big_state1->matrix))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_material_layer_point_sprite_coords_equal (CoglMaterialLayer *authority0,
|
|
CoglMaterialLayer *authority1)
|
|
{
|
|
CoglMaterialLayerBigState *big_state0 = authority0->big_state;
|
|
CoglMaterialLayerBigState *big_state1 = authority1->big_state;
|
|
|
|
return big_state0->point_sprite_coords == big_state1->point_sprite_coords;
|
|
}
|
|
|
|
typedef gboolean
|
|
(*CoglMaterialLayerStateComparitor) (CoglMaterialLayer *authority0,
|
|
CoglMaterialLayer *authority1);
|
|
|
|
static gboolean
|
|
layer_state_equal (CoglMaterialLayerState state,
|
|
CoglMaterialLayer *layer0,
|
|
CoglMaterialLayer *layer1,
|
|
CoglMaterialLayerStateComparitor comparitor)
|
|
{
|
|
CoglMaterialLayer *authority0 =
|
|
_cogl_material_layer_get_authority (layer0, state);
|
|
CoglMaterialLayer *authority1 =
|
|
_cogl_material_layer_get_authority (layer1, state);
|
|
|
|
return comparitor (authority0, authority1);
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_material_layer_equal (CoglMaterialLayer *layer0,
|
|
CoglMaterialLayer *layer1)
|
|
{
|
|
unsigned long layers_difference;
|
|
|
|
if (layer0 == layer1)
|
|
return TRUE;
|
|
|
|
layers_difference =
|
|
_cogl_material_layer_compare_differences (layer0, layer1);
|
|
|
|
if (layers_difference & COGL_MATERIAL_LAYER_STATE_TEXTURE &&
|
|
!layer_state_equal (COGL_MATERIAL_LAYER_STATE_TEXTURE,
|
|
layer0, layer1,
|
|
_cogl_material_layer_texture_equal))
|
|
return FALSE;
|
|
|
|
if (layers_difference & COGL_MATERIAL_LAYER_STATE_COMBINE &&
|
|
!layer_state_equal (COGL_MATERIAL_LAYER_STATE_COMBINE,
|
|
layer0, layer1,
|
|
_cogl_material_layer_combine_state_equal))
|
|
return FALSE;
|
|
|
|
if (layers_difference & COGL_MATERIAL_LAYER_STATE_COMBINE_CONSTANT &&
|
|
!layer_state_equal (COGL_MATERIAL_LAYER_STATE_COMBINE_CONSTANT,
|
|
layer0, layer1,
|
|
_cogl_material_layer_combine_constant_equal))
|
|
return FALSE;
|
|
|
|
if (layers_difference & COGL_MATERIAL_LAYER_STATE_FILTERS &&
|
|
!layer_state_equal (COGL_MATERIAL_LAYER_STATE_FILTERS,
|
|
layer0, layer1,
|
|
_cogl_material_layer_filters_equal))
|
|
return FALSE;
|
|
|
|
if (layers_difference & COGL_MATERIAL_LAYER_STATE_WRAP_MODES &&
|
|
!layer_state_equal (COGL_MATERIAL_LAYER_STATE_WRAP_MODES,
|
|
layer0, layer1,
|
|
_cogl_material_layer_wrap_modes_equal))
|
|
return FALSE;
|
|
|
|
if (layers_difference & COGL_MATERIAL_LAYER_STATE_USER_MATRIX &&
|
|
!layer_state_equal (COGL_MATERIAL_LAYER_STATE_USER_MATRIX,
|
|
layer0, layer1,
|
|
_cogl_material_layer_user_matrix_equal))
|
|
return FALSE;
|
|
|
|
if (layers_difference & COGL_MATERIAL_LAYER_STATE_POINT_SPRITE_COORDS &&
|
|
!layer_state_equal (COGL_MATERIAL_LAYER_STATE_POINT_SPRITE_COORDS,
|
|
layer0, layer1,
|
|
_cogl_material_layer_point_sprite_coords_equal))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_material_color_equal (CoglMaterial *authority0,
|
|
CoglMaterial *authority1)
|
|
{
|
|
return cogl_color_equal (&authority0->color, &authority1->color);
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_material_lighting_state_equal (CoglMaterial *authority0,
|
|
CoglMaterial *authority1)
|
|
{
|
|
CoglMaterialLightingState *state0 = &authority0->big_state->lighting_state;
|
|
CoglMaterialLightingState *state1 = &authority1->big_state->lighting_state;
|
|
|
|
if (memcmp (state0->ambient, state1->ambient, sizeof (float) * 4) != 0)
|
|
return FALSE;
|
|
if (memcmp (state0->diffuse, state1->diffuse, sizeof (float) * 4) != 0)
|
|
return FALSE;
|
|
if (memcmp (state0->specular, state1->specular, sizeof (float) * 4) != 0)
|
|
return FALSE;
|
|
if (memcmp (state0->emission, state1->emission, sizeof (float) * 4) != 0)
|
|
return FALSE;
|
|
if (state0->shininess != state1->shininess)
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_material_alpha_state_equal (CoglMaterial *authority0,
|
|
CoglMaterial *authority1)
|
|
{
|
|
CoglMaterialAlphaFuncState *alpha_state0 =
|
|
&authority0->big_state->alpha_state;
|
|
CoglMaterialAlphaFuncState *alpha_state1 =
|
|
&authority1->big_state->alpha_state;
|
|
|
|
if (alpha_state0->alpha_func != alpha_state1->alpha_func ||
|
|
alpha_state0->alpha_func_reference != alpha_state1->alpha_func_reference)
|
|
return FALSE;
|
|
else
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_material_blend_state_equal (CoglMaterial *authority0,
|
|
CoglMaterial *authority1)
|
|
{
|
|
CoglMaterialBlendState *blend_state0 = &authority0->big_state->blend_state;
|
|
CoglMaterialBlendState *blend_state1 = &authority1->big_state->blend_state;
|
|
|
|
#ifndef HAVE_COGL_GLES
|
|
if (blend_state0->blend_equation_rgb != blend_state1->blend_equation_rgb)
|
|
return FALSE;
|
|
if (blend_state0->blend_equation_alpha !=
|
|
blend_state1->blend_equation_alpha)
|
|
return FALSE;
|
|
if (blend_state0->blend_src_factor_alpha !=
|
|
blend_state1->blend_src_factor_alpha)
|
|
return FALSE;
|
|
if (blend_state0->blend_dst_factor_alpha !=
|
|
blend_state1->blend_dst_factor_alpha)
|
|
return FALSE;
|
|
#endif
|
|
if (blend_state0->blend_src_factor_rgb !=
|
|
blend_state1->blend_src_factor_rgb)
|
|
return FALSE;
|
|
if (blend_state0->blend_dst_factor_rgb !=
|
|
blend_state1->blend_dst_factor_rgb)
|
|
return FALSE;
|
|
#ifndef HAVE_COGL_GLES
|
|
if (!cogl_color_equal (&blend_state0->blend_constant,
|
|
&blend_state1->blend_constant))
|
|
return FALSE;
|
|
#endif
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_material_depth_state_equal (CoglMaterial *authority0,
|
|
CoglMaterial *authority1)
|
|
{
|
|
if (authority0->big_state->depth_state.depth_test_enabled == FALSE &&
|
|
authority1->big_state->depth_state.depth_test_enabled == FALSE)
|
|
return TRUE;
|
|
else
|
|
return memcmp (&authority0->big_state->depth_state,
|
|
&authority1->big_state->depth_state,
|
|
sizeof (CoglMaterialDepthState)) == 0;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_material_fog_state_equal (CoglMaterial *authority0,
|
|
CoglMaterial *authority1)
|
|
{
|
|
CoglMaterialFogState *fog_state0 = &authority0->big_state->fog_state;
|
|
CoglMaterialFogState *fog_state1 = &authority1->big_state->fog_state;
|
|
|
|
if (fog_state0->enabled == fog_state1->enabled &&
|
|
cogl_color_equal (&fog_state0->color, &fog_state1->color) &&
|
|
fog_state0->mode == fog_state1->mode &&
|
|
fog_state0->density == fog_state1->density &&
|
|
fog_state0->z_near == fog_state1->z_near &&
|
|
fog_state0->z_far == fog_state1->z_far)
|
|
return TRUE;
|
|
else
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_material_point_size_equal (CoglMaterial *authority0,
|
|
CoglMaterial *authority1)
|
|
{
|
|
return authority0->big_state->point_size == authority1->big_state->point_size;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_material_layers_equal (CoglMaterial *authority0,
|
|
CoglMaterial *authority1)
|
|
{
|
|
int i;
|
|
|
|
if (authority0->n_layers != authority1->n_layers)
|
|
return FALSE;
|
|
|
|
_cogl_material_update_layers_cache (authority0);
|
|
_cogl_material_update_layers_cache (authority1);
|
|
|
|
for (i = 0; i < authority0->n_layers; i++)
|
|
{
|
|
if (!_cogl_material_layer_equal (authority0->layers_cache[i],
|
|
authority1->layers_cache[i]))
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/* Determine the mask of differences between two materials */
|
|
static unsigned long
|
|
_cogl_material_compare_differences (CoglMaterial *material0,
|
|
CoglMaterial *material1)
|
|
{
|
|
CoglMaterial *node0;
|
|
CoglMaterial *node1;
|
|
int len0;
|
|
int len1;
|
|
int len0_index;
|
|
int len1_index;
|
|
int count;
|
|
int i;
|
|
CoglMaterial *common_ancestor = NULL;
|
|
unsigned long materials_difference = 0;
|
|
|
|
_COGL_GET_CONTEXT (ctx, 0);
|
|
|
|
/* Algorithm:
|
|
*
|
|
* 1) Walk the ancestors of each layer to the root node, adding a
|
|
* pointer to each ancester node to two GArrays:
|
|
* ctx->material0_nodes, and ctx->material1_nodes.
|
|
*
|
|
* 2) Compare the arrays to find the nodes where they stop to
|
|
* differ.
|
|
*
|
|
* 3) For each array now iterate from index 0 to the first node of
|
|
* difference ORing that nodes ->difference mask into the final
|
|
* material_differences mask.
|
|
*/
|
|
|
|
g_array_set_size (ctx->material0_nodes, 0);
|
|
g_array_set_size (ctx->material1_nodes, 0);
|
|
for (node0 = material0; node0; node0 = _cogl_material_get_parent (node0))
|
|
g_array_append_vals (ctx->material0_nodes, &node0, 1);
|
|
for (node1 = material1; node1; node1 = _cogl_material_get_parent (node1))
|
|
g_array_append_vals (ctx->material1_nodes, &node1, 1);
|
|
|
|
len0 = ctx->material0_nodes->len;
|
|
len1 = ctx->material1_nodes->len;
|
|
/* There's no point looking at the last entries since we know both
|
|
* layers must have the same default layer as their root node. */
|
|
len0_index = len0 - 2;
|
|
len1_index = len1 - 2;
|
|
count = MIN (len0, len1) - 1;
|
|
for (i = 0; i < count; i++)
|
|
{
|
|
node0 = g_array_index (ctx->material0_nodes,
|
|
CoglMaterial *, len0_index--);
|
|
node1 = g_array_index (ctx->material1_nodes,
|
|
CoglMaterial *, len1_index--);
|
|
if (node0 != node1)
|
|
{
|
|
common_ancestor = _cogl_material_get_parent (node0);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* If we didn't already find the first the common_ancestor ancestor
|
|
* that's because one material is a direct descendant of the other
|
|
* and in this case the first common ancestor is the last node we
|
|
* looked at. */
|
|
if (!common_ancestor)
|
|
common_ancestor = node0;
|
|
|
|
count = len0 - 1;
|
|
for (i = 0; i < count; i++)
|
|
{
|
|
node0 = g_array_index (ctx->material0_nodes, CoglMaterial *, i);
|
|
if (node0 == common_ancestor)
|
|
break;
|
|
materials_difference |= node0->differences;
|
|
}
|
|
|
|
count = len1 - 1;
|
|
for (i = 0; i < count; i++)
|
|
{
|
|
node1 = g_array_index (ctx->material1_nodes, CoglMaterial *, i);
|
|
if (node1 == common_ancestor)
|
|
break;
|
|
materials_difference |= node1->differences;
|
|
}
|
|
|
|
return materials_difference;
|
|
|
|
}
|
|
|
|
static gboolean
|
|
simple_property_equal (CoglMaterial *material0,
|
|
CoglMaterial *material1,
|
|
unsigned long materials_difference,
|
|
CoglMaterialState state,
|
|
CoglMaterialStateComparitor comparitor)
|
|
{
|
|
if (materials_difference & state)
|
|
{
|
|
if (!comparitor (_cogl_material_get_authority (material0, state),
|
|
_cogl_material_get_authority (material1, state)))
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/* Comparison of two arbitrary materials is done by:
|
|
* 1) walking up the parents of each material until a common
|
|
* ancestor is found, and at each step ORing together the
|
|
* difference masks.
|
|
*
|
|
* 2) using the final difference mask to determine which state
|
|
* groups to compare.
|
|
*
|
|
* This is used by the Cogl journal to compare materials so that it
|
|
* can split up geometry that needs different OpenGL state.
|
|
*
|
|
* It is acceptable to have false negatives - although they will result
|
|
* in redundant OpenGL calls that try and update the state.
|
|
*
|
|
* False positives aren't allowed.
|
|
*/
|
|
gboolean
|
|
_cogl_material_equal (CoglMaterial *material0,
|
|
CoglMaterial *material1,
|
|
gboolean skip_gl_color)
|
|
{
|
|
unsigned long materials_difference;
|
|
|
|
if (material0 == material1)
|
|
return TRUE;
|
|
|
|
/* First check non-sparse properties */
|
|
|
|
if (material0->real_blend_enable != material1->real_blend_enable)
|
|
return FALSE;
|
|
|
|
/* Then check sparse properties */
|
|
|
|
materials_difference =
|
|
_cogl_material_compare_differences (material0, material1);
|
|
|
|
if (materials_difference & COGL_MATERIAL_STATE_COLOR &&
|
|
!skip_gl_color)
|
|
{
|
|
CoglMaterialState state = COGL_MATERIAL_STATE_COLOR;
|
|
CoglMaterial *authority0 =
|
|
_cogl_material_get_authority (material0, state);
|
|
CoglMaterial *authority1 =
|
|
_cogl_material_get_authority (material1, state);
|
|
|
|
if (!cogl_color_equal (&authority0->color, &authority1->color))
|
|
return FALSE;
|
|
}
|
|
|
|
if (!simple_property_equal (material0, material1,
|
|
materials_difference,
|
|
COGL_MATERIAL_STATE_LIGHTING,
|
|
_cogl_material_lighting_state_equal))
|
|
return FALSE;
|
|
|
|
if (!simple_property_equal (material0, material1,
|
|
materials_difference,
|
|
COGL_MATERIAL_STATE_ALPHA_FUNC,
|
|
_cogl_material_alpha_state_equal))
|
|
return FALSE;
|
|
|
|
/* We don't need to compare the detailed blending state if we know
|
|
* blending is disabled for both materials. */
|
|
if (material0->real_blend_enable &&
|
|
materials_difference & COGL_MATERIAL_STATE_BLEND)
|
|
{
|
|
CoglMaterialState state = COGL_MATERIAL_STATE_BLEND;
|
|
CoglMaterial *authority0 =
|
|
_cogl_material_get_authority (material0, state);
|
|
CoglMaterial *authority1 =
|
|
_cogl_material_get_authority (material1, state);
|
|
|
|
if (!_cogl_material_blend_state_equal (authority0, authority1))
|
|
return FALSE;
|
|
}
|
|
|
|
/* XXX: we don't need to compare the BLEND_ENABLE state because it's
|
|
* already reflected in ->real_blend_enable */
|
|
#if 0
|
|
if (!simple_property_equal (material0, material1,
|
|
materials_difference,
|
|
COGL_MATERIAL_STATE_BLEND,
|
|
_cogl_material_blend_enable_equal))
|
|
return FALSE;
|
|
#endif
|
|
|
|
if (!simple_property_equal (material0, material1,
|
|
materials_difference,
|
|
COGL_MATERIAL_STATE_DEPTH,
|
|
_cogl_material_depth_state_equal))
|
|
return FALSE;
|
|
|
|
if (!simple_property_equal (material0, material1,
|
|
materials_difference,
|
|
COGL_MATERIAL_STATE_FOG,
|
|
_cogl_material_fog_state_equal))
|
|
return FALSE;
|
|
|
|
if (!simple_property_equal (material0, material1,
|
|
materials_difference,
|
|
COGL_MATERIAL_STATE_POINT_SIZE,
|
|
_cogl_material_point_size_equal))
|
|
return FALSE;
|
|
|
|
if (!simple_property_equal (material0, material1,
|
|
materials_difference,
|
|
COGL_MATERIAL_STATE_LAYERS,
|
|
_cogl_material_layers_equal))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
cogl_material_get_color (CoglMaterial *material,
|
|
CoglColor *color)
|
|
{
|
|
CoglMaterial *authority;
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_COLOR);
|
|
|
|
*color = authority->color;
|
|
}
|
|
|
|
/* This is used heavily by the cogl journal when logging quads */
|
|
void
|
|
_cogl_material_get_colorubv (CoglMaterial *material,
|
|
guint8 *color)
|
|
{
|
|
CoglMaterial *authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_COLOR);
|
|
|
|
_cogl_color_get_rgba_4ubv (&authority->color, color);
|
|
}
|
|
|
|
static void
|
|
_cogl_material_prune_redundant_ancestry (CoglMaterial *material)
|
|
{
|
|
CoglMaterial *new_parent = _cogl_material_get_parent (material);
|
|
|
|
/* walk up past ancestors that are now redundant and potentially
|
|
* reparent the material. */
|
|
while (_cogl_material_get_parent (new_parent) &&
|
|
(new_parent->differences | material->differences) ==
|
|
material->differences)
|
|
new_parent = _cogl_material_get_parent (new_parent);
|
|
|
|
_cogl_material_set_parent (material, new_parent);
|
|
}
|
|
|
|
static void
|
|
_cogl_material_update_authority (CoglMaterial *material,
|
|
CoglMaterial *authority,
|
|
CoglMaterialState state,
|
|
CoglMaterialStateComparitor comparitor)
|
|
{
|
|
/* If we are the current authority see if we can revert to one of
|
|
* our ancestors being the authority */
|
|
if (material == authority &&
|
|
_cogl_material_get_parent (authority) != NULL)
|
|
{
|
|
CoglMaterial *parent = _cogl_material_get_parent (authority);
|
|
CoglMaterial *old_authority =
|
|
_cogl_material_get_authority (parent, state);
|
|
|
|
if (comparitor (authority, old_authority))
|
|
material->differences &= ~state;
|
|
}
|
|
else if (material != authority)
|
|
{
|
|
/* If we weren't previously the authority on this state then we
|
|
* need to extended our differences mask and so it's possible
|
|
* that some of our ancestry will now become redundant, so we
|
|
* aim to reparent ourselves if that's true... */
|
|
material->differences |= state;
|
|
_cogl_material_prune_redundant_ancestry (material);
|
|
}
|
|
}
|
|
|
|
void
|
|
cogl_material_set_color (CoglMaterial *material,
|
|
const CoglColor *color)
|
|
{
|
|
CoglMaterialState state = COGL_MATERIAL_STATE_COLOR;
|
|
CoglMaterial *authority;
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
authority = _cogl_material_get_authority (material, state);
|
|
|
|
if (cogl_color_equal (color, &authority->color))
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the material has no dependants so it may be modified.
|
|
* - If the material isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_material_pre_change_notify (material, state, color);
|
|
|
|
material->color = *color;
|
|
|
|
_cogl_material_update_authority (material, authority, state,
|
|
_cogl_material_color_equal);
|
|
|
|
handle_automatic_blend_enable (material, state);
|
|
}
|
|
|
|
void
|
|
cogl_material_set_color4ub (CoglMaterial *material,
|
|
guint8 red,
|
|
guint8 green,
|
|
guint8 blue,
|
|
guint8 alpha)
|
|
{
|
|
CoglColor color;
|
|
cogl_color_set_from_4ub (&color, red, green, blue, alpha);
|
|
cogl_material_set_color (material, &color);
|
|
}
|
|
|
|
void
|
|
cogl_material_set_color4f (CoglMaterial *material,
|
|
float red,
|
|
float green,
|
|
float blue,
|
|
float alpha)
|
|
{
|
|
CoglColor color;
|
|
cogl_color_set_from_4f (&color, red, green, blue, alpha);
|
|
cogl_material_set_color (material, &color);
|
|
}
|
|
|
|
CoglMaterialBlendEnable
|
|
_cogl_material_get_blend_enabled (CoglMaterial *material)
|
|
{
|
|
CoglMaterial *authority;
|
|
|
|
g_return_val_if_fail (cogl_is_material (material), FALSE);
|
|
|
|
authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_BLEND_ENABLE);
|
|
return authority->blend_enable;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_material_blend_enable_equal (CoglMaterial *authority0,
|
|
CoglMaterial *authority1)
|
|
{
|
|
return authority0->blend_enable == authority1->blend_enable ? TRUE : FALSE;
|
|
}
|
|
|
|
void
|
|
_cogl_material_set_blend_enabled (CoglMaterial *material,
|
|
CoglMaterialBlendEnable enable)
|
|
{
|
|
CoglMaterialState state = COGL_MATERIAL_STATE_BLEND_ENABLE;
|
|
CoglMaterial *authority;
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
g_return_if_fail (enable > 1 &&
|
|
"don't pass TRUE or FALSE to _set_blend_enabled!");
|
|
|
|
authority = _cogl_material_get_authority (material, state);
|
|
|
|
if (authority->blend_enable == enable)
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the material has no dependants so it may be modified.
|
|
* - If the material isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_material_pre_change_notify (material, state, NULL);
|
|
|
|
material->blend_enable = enable;
|
|
|
|
_cogl_material_update_authority (material, authority, state,
|
|
_cogl_material_blend_enable_equal);
|
|
|
|
handle_automatic_blend_enable (material, state);
|
|
}
|
|
|
|
void
|
|
cogl_material_get_ambient (CoglMaterial *material,
|
|
CoglColor *ambient)
|
|
{
|
|
CoglMaterial *authority;
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_LIGHTING);
|
|
|
|
cogl_color_init_from_4fv (ambient,
|
|
authority->big_state->lighting_state.ambient);
|
|
}
|
|
|
|
void
|
|
cogl_material_set_ambient (CoglMaterial *material,
|
|
const CoglColor *ambient)
|
|
{
|
|
CoglMaterialState state = COGL_MATERIAL_STATE_LIGHTING;
|
|
CoglMaterial *authority;
|
|
CoglMaterialLightingState *lighting_state;
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
authority = _cogl_material_get_authority (material, state);
|
|
|
|
lighting_state = &authority->big_state->lighting_state;
|
|
if (cogl_color_equal (ambient, &lighting_state->ambient))
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the material has no dependants so it may be modified.
|
|
* - If the material isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_material_pre_change_notify (material, state, NULL);
|
|
|
|
lighting_state = &material->big_state->lighting_state;
|
|
lighting_state->ambient[0] = cogl_color_get_red_float (ambient);
|
|
lighting_state->ambient[1] = cogl_color_get_green_float (ambient);
|
|
lighting_state->ambient[2] = cogl_color_get_blue_float (ambient);
|
|
lighting_state->ambient[3] = cogl_color_get_alpha_float (ambient);
|
|
|
|
_cogl_material_update_authority (material, authority, state,
|
|
_cogl_material_lighting_state_equal);
|
|
|
|
handle_automatic_blend_enable (material, state);
|
|
}
|
|
|
|
void
|
|
cogl_material_get_diffuse (CoglMaterial *material,
|
|
CoglColor *diffuse)
|
|
{
|
|
CoglMaterial *authority;
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_LIGHTING);
|
|
|
|
cogl_color_init_from_4fv (diffuse,
|
|
authority->big_state->lighting_state.diffuse);
|
|
}
|
|
|
|
void
|
|
cogl_material_set_diffuse (CoglMaterial *material,
|
|
const CoglColor *diffuse)
|
|
{
|
|
CoglMaterialState state = COGL_MATERIAL_STATE_LIGHTING;
|
|
CoglMaterial *authority;
|
|
CoglMaterialLightingState *lighting_state;
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
authority = _cogl_material_get_authority (material, state);
|
|
|
|
lighting_state = &authority->big_state->lighting_state;
|
|
if (cogl_color_equal (diffuse, &lighting_state->diffuse))
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the material has no dependants so it may be modified.
|
|
* - If the material isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_material_pre_change_notify (material, state, NULL);
|
|
|
|
lighting_state = &material->big_state->lighting_state;
|
|
lighting_state->diffuse[0] = cogl_color_get_red_float (diffuse);
|
|
lighting_state->diffuse[1] = cogl_color_get_green_float (diffuse);
|
|
lighting_state->diffuse[2] = cogl_color_get_blue_float (diffuse);
|
|
lighting_state->diffuse[3] = cogl_color_get_alpha_float (diffuse);
|
|
|
|
|
|
_cogl_material_update_authority (material, authority, state,
|
|
_cogl_material_lighting_state_equal);
|
|
|
|
handle_automatic_blend_enable (material, state);
|
|
}
|
|
|
|
void
|
|
cogl_material_set_ambient_and_diffuse (CoglMaterial *material,
|
|
const CoglColor *color)
|
|
{
|
|
cogl_material_set_ambient (material, color);
|
|
cogl_material_set_diffuse (material, color);
|
|
}
|
|
|
|
void
|
|
cogl_material_get_specular (CoglMaterial *material,
|
|
CoglColor *specular)
|
|
{
|
|
CoglMaterial *authority;
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_LIGHTING);
|
|
|
|
cogl_color_init_from_4fv (specular,
|
|
authority->big_state->lighting_state.specular);
|
|
}
|
|
|
|
void
|
|
cogl_material_set_specular (CoglMaterial *material, const CoglColor *specular)
|
|
{
|
|
CoglMaterial *authority;
|
|
CoglMaterialState state = COGL_MATERIAL_STATE_LIGHTING;
|
|
CoglMaterialLightingState *lighting_state;
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
authority = _cogl_material_get_authority (material, state);
|
|
|
|
lighting_state = &authority->big_state->lighting_state;
|
|
if (cogl_color_equal (specular, &lighting_state->specular))
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the material has no dependants so it may be modified.
|
|
* - If the material isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_material_pre_change_notify (material, state, NULL);
|
|
|
|
lighting_state = &material->big_state->lighting_state;
|
|
lighting_state->specular[0] = cogl_color_get_red_float (specular);
|
|
lighting_state->specular[1] = cogl_color_get_green_float (specular);
|
|
lighting_state->specular[2] = cogl_color_get_blue_float (specular);
|
|
lighting_state->specular[3] = cogl_color_get_alpha_float (specular);
|
|
|
|
_cogl_material_update_authority (material, authority, state,
|
|
_cogl_material_lighting_state_equal);
|
|
|
|
handle_automatic_blend_enable (material, state);
|
|
}
|
|
|
|
float
|
|
cogl_material_get_shininess (CoglMaterial *material)
|
|
{
|
|
CoglMaterial *authority;
|
|
|
|
g_return_val_if_fail (cogl_is_material (material), 0);
|
|
|
|
authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_LIGHTING);
|
|
|
|
return authority->big_state->lighting_state.shininess;
|
|
}
|
|
|
|
void
|
|
cogl_material_set_shininess (CoglMaterial *material,
|
|
float shininess)
|
|
{
|
|
CoglMaterial *authority;
|
|
CoglMaterialState state = COGL_MATERIAL_STATE_LIGHTING;
|
|
CoglMaterialLightingState *lighting_state;
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
if (shininess < 0.0 || shininess > 1.0)
|
|
{
|
|
g_warning ("Out of range shininess %f supplied for material\n",
|
|
shininess);
|
|
return;
|
|
}
|
|
|
|
authority = _cogl_material_get_authority (material, state);
|
|
|
|
lighting_state = &authority->big_state->lighting_state;
|
|
|
|
if (lighting_state->shininess == shininess)
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the material has no dependants so it may be modified.
|
|
* - If the material isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_material_pre_change_notify (material, state, NULL);
|
|
|
|
lighting_state = &material->big_state->lighting_state;
|
|
lighting_state->shininess = shininess;
|
|
|
|
_cogl_material_update_authority (material, authority, state,
|
|
_cogl_material_lighting_state_equal);
|
|
}
|
|
|
|
void
|
|
cogl_material_get_emission (CoglMaterial *material,
|
|
CoglColor *emission)
|
|
{
|
|
CoglMaterial *authority;
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_LIGHTING);
|
|
|
|
cogl_color_init_from_4fv (emission,
|
|
authority->big_state->lighting_state.emission);
|
|
}
|
|
|
|
void
|
|
cogl_material_set_emission (CoglMaterial *material, const CoglColor *emission)
|
|
{
|
|
CoglMaterial *authority;
|
|
CoglMaterialState state = COGL_MATERIAL_STATE_LIGHTING;
|
|
CoglMaterialLightingState *lighting_state;
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
authority = _cogl_material_get_authority (material, state);
|
|
|
|
lighting_state = &authority->big_state->lighting_state;
|
|
if (cogl_color_equal (emission, &lighting_state->emission))
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the material has no dependants so it may be modified.
|
|
* - If the material isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_material_pre_change_notify (material, state, NULL);
|
|
|
|
lighting_state = &material->big_state->lighting_state;
|
|
lighting_state->emission[0] = cogl_color_get_red_float (emission);
|
|
lighting_state->emission[1] = cogl_color_get_green_float (emission);
|
|
lighting_state->emission[2] = cogl_color_get_blue_float (emission);
|
|
lighting_state->emission[3] = cogl_color_get_alpha_float (emission);
|
|
|
|
_cogl_material_update_authority (material, authority, state,
|
|
_cogl_material_lighting_state_equal);
|
|
|
|
handle_automatic_blend_enable (material, state);
|
|
}
|
|
|
|
void
|
|
cogl_material_set_alpha_test_function (CoglMaterial *material,
|
|
CoglMaterialAlphaFunc alpha_func,
|
|
float alpha_reference)
|
|
{
|
|
CoglMaterialState state = COGL_MATERIAL_STATE_ALPHA_FUNC;
|
|
CoglMaterial *authority;
|
|
CoglMaterialAlphaFuncState *alpha_state;
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
authority = _cogl_material_get_authority (material, state);
|
|
|
|
alpha_state = &authority->big_state->alpha_state;
|
|
if (alpha_state->alpha_func == alpha_func &&
|
|
alpha_state->alpha_func_reference == alpha_reference)
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the material has no dependants so it may be modified.
|
|
* - If the material isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_material_pre_change_notify (material, state, NULL);
|
|
|
|
alpha_state = &material->big_state->alpha_state;
|
|
alpha_state->alpha_func = alpha_func;
|
|
alpha_state->alpha_func_reference = alpha_reference;
|
|
|
|
_cogl_material_update_authority (material, authority, state,
|
|
_cogl_material_alpha_state_equal);
|
|
}
|
|
|
|
GLenum
|
|
arg_to_gl_blend_factor (CoglBlendStringArgument *arg)
|
|
{
|
|
if (arg->source.is_zero)
|
|
return GL_ZERO;
|
|
if (arg->factor.is_one)
|
|
return GL_ONE;
|
|
else if (arg->factor.is_src_alpha_saturate)
|
|
return GL_SRC_ALPHA_SATURATE;
|
|
else if (arg->factor.source.info->type ==
|
|
COGL_BLEND_STRING_COLOR_SOURCE_SRC_COLOR)
|
|
{
|
|
if (arg->factor.source.mask != COGL_BLEND_STRING_CHANNEL_MASK_ALPHA)
|
|
{
|
|
if (arg->factor.source.one_minus)
|
|
return GL_ONE_MINUS_SRC_COLOR;
|
|
else
|
|
return GL_SRC_COLOR;
|
|
}
|
|
else
|
|
{
|
|
if (arg->factor.source.one_minus)
|
|
return GL_ONE_MINUS_SRC_ALPHA;
|
|
else
|
|
return GL_SRC_ALPHA;
|
|
}
|
|
}
|
|
else if (arg->factor.source.info->type ==
|
|
COGL_BLEND_STRING_COLOR_SOURCE_DST_COLOR)
|
|
{
|
|
if (arg->factor.source.mask != COGL_BLEND_STRING_CHANNEL_MASK_ALPHA)
|
|
{
|
|
if (arg->factor.source.one_minus)
|
|
return GL_ONE_MINUS_DST_COLOR;
|
|
else
|
|
return GL_DST_COLOR;
|
|
}
|
|
else
|
|
{
|
|
if (arg->factor.source.one_minus)
|
|
return GL_ONE_MINUS_DST_ALPHA;
|
|
else
|
|
return GL_DST_ALPHA;
|
|
}
|
|
}
|
|
#ifndef HAVE_COGL_GLES
|
|
else if (arg->factor.source.info->type ==
|
|
COGL_BLEND_STRING_COLOR_SOURCE_CONSTANT)
|
|
{
|
|
if (arg->factor.source.mask != COGL_BLEND_STRING_CHANNEL_MASK_ALPHA)
|
|
{
|
|
if (arg->factor.source.one_minus)
|
|
return GL_ONE_MINUS_CONSTANT_COLOR;
|
|
else
|
|
return GL_CONSTANT_COLOR;
|
|
}
|
|
else
|
|
{
|
|
if (arg->factor.source.one_minus)
|
|
return GL_ONE_MINUS_CONSTANT_ALPHA;
|
|
else
|
|
return GL_CONSTANT_ALPHA;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
g_warning ("Unable to determine valid blend factor from blend string\n");
|
|
return GL_ONE;
|
|
}
|
|
|
|
void
|
|
setup_blend_state (CoglBlendStringStatement *statement,
|
|
GLenum *blend_equation,
|
|
GLint *blend_src_factor,
|
|
GLint *blend_dst_factor)
|
|
{
|
|
#ifndef HAVE_COGL_GLES
|
|
switch (statement->function->type)
|
|
{
|
|
case COGL_BLEND_STRING_FUNCTION_ADD:
|
|
*blend_equation = GL_FUNC_ADD;
|
|
break;
|
|
/* TODO - add more */
|
|
default:
|
|
g_warning ("Unsupported blend function given");
|
|
*blend_equation = GL_FUNC_ADD;
|
|
}
|
|
#endif
|
|
|
|
*blend_src_factor = arg_to_gl_blend_factor (&statement->args[0]);
|
|
*blend_dst_factor = arg_to_gl_blend_factor (&statement->args[1]);
|
|
}
|
|
|
|
gboolean
|
|
cogl_material_set_blend (CoglMaterial *material,
|
|
const char *blend_description,
|
|
GError **error)
|
|
{
|
|
CoglMaterialState state = COGL_MATERIAL_STATE_BLEND;
|
|
CoglMaterial *authority;
|
|
CoglBlendStringStatement statements[2];
|
|
CoglBlendStringStatement *rgb;
|
|
CoglBlendStringStatement *a;
|
|
GError *internal_error = NULL;
|
|
int count;
|
|
CoglMaterialBlendState *blend_state;
|
|
|
|
g_return_val_if_fail (cogl_is_material (material), FALSE);
|
|
|
|
count =
|
|
_cogl_blend_string_compile (blend_description,
|
|
COGL_BLEND_STRING_CONTEXT_BLENDING,
|
|
statements,
|
|
&internal_error);
|
|
if (!count)
|
|
{
|
|
if (error)
|
|
g_propagate_error (error, internal_error);
|
|
else
|
|
{
|
|
g_warning ("Cannot compile blend description: %s\n",
|
|
internal_error->message);
|
|
g_error_free (internal_error);
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
if (count == 1)
|
|
rgb = a = statements;
|
|
else
|
|
{
|
|
rgb = &statements[0];
|
|
a = &statements[1];
|
|
}
|
|
|
|
authority =
|
|
_cogl_material_get_authority (material, state);
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the material has no dependants so it may be modified.
|
|
* - If the material isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_material_pre_change_notify (material, state, NULL);
|
|
|
|
blend_state = &material->big_state->blend_state;
|
|
#ifndef HAVE_COGL_GLES
|
|
setup_blend_state (rgb,
|
|
&blend_state->blend_equation_rgb,
|
|
&blend_state->blend_src_factor_rgb,
|
|
&blend_state->blend_dst_factor_rgb);
|
|
setup_blend_state (a,
|
|
&blend_state->blend_equation_alpha,
|
|
&blend_state->blend_src_factor_alpha,
|
|
&blend_state->blend_dst_factor_alpha);
|
|
#else
|
|
setup_blend_state (rgb,
|
|
NULL,
|
|
&blend_state->blend_src_factor_rgb,
|
|
&blend_state->blend_dst_factor_rgb);
|
|
#endif
|
|
|
|
/* If we are the current authority see if we can revert to one of our
|
|
* ancestors being the authority */
|
|
if (material == authority &&
|
|
_cogl_material_get_parent (authority) != NULL)
|
|
{
|
|
CoglMaterial *parent = _cogl_material_get_parent (authority);
|
|
CoglMaterial *old_authority =
|
|
_cogl_material_get_authority (parent, state);
|
|
|
|
if (_cogl_material_blend_state_equal (authority, old_authority))
|
|
material->differences &= ~state;
|
|
}
|
|
|
|
/* If we weren't previously the authority on this state then we need
|
|
* to extended our differences mask and so it's possible that some
|
|
* of our ancestry will now become redundant, so we aim to reparent
|
|
* ourselves if that's true... */
|
|
if (material != authority)
|
|
{
|
|
material->differences |= state;
|
|
_cogl_material_prune_redundant_ancestry (material);
|
|
}
|
|
|
|
handle_automatic_blend_enable (material, state);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
cogl_material_set_blend_constant (CoglMaterial *material,
|
|
const CoglColor *constant_color)
|
|
{
|
|
#ifndef HAVE_COGL_GLES
|
|
CoglMaterialState state = COGL_MATERIAL_STATE_BLEND;
|
|
CoglMaterial *authority;
|
|
CoglMaterialBlendState *blend_state;
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
authority = _cogl_material_get_authority (material, state);
|
|
|
|
blend_state = &authority->big_state->blend_state;
|
|
if (cogl_color_equal (constant_color, &blend_state->blend_constant))
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the material has no dependants so it may be modified.
|
|
* - If the material isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_material_pre_change_notify (material, state, NULL);
|
|
|
|
blend_state = &material->big_state->blend_state;
|
|
blend_state->blend_constant = *constant_color;
|
|
|
|
_cogl_material_update_authority (material, authority, state,
|
|
_cogl_material_blend_state_equal);
|
|
|
|
handle_automatic_blend_enable (material, state);
|
|
#endif
|
|
}
|
|
|
|
/* XXX: for now we don't mind if the program has vertex shaders
|
|
* attached but if we ever make a similar API public we should only
|
|
* allow attaching of programs containing fragment shaders. Eventually
|
|
* we will have a CoglPipeline abstraction to also cover vertex
|
|
* processing.
|
|
*/
|
|
void
|
|
_cogl_material_set_user_program (CoglMaterial *material,
|
|
CoglHandle program)
|
|
{
|
|
CoglMaterialState state = COGL_MATERIAL_STATE_USER_SHADER;
|
|
CoglMaterial *authority;
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
authority = _cogl_material_get_authority (material, state);
|
|
|
|
if (authority->big_state->user_program == program)
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the material has no dependants so it may be modified.
|
|
* - If the material isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_material_pre_change_notify (material, state, NULL);
|
|
|
|
if (program != COGL_INVALID_HANDLE)
|
|
_cogl_material_set_backend (material, COGL_MATERIAL_BACKEND_DEFAULT);
|
|
|
|
/* If we are the current authority see if we can revert to one of our
|
|
* ancestors being the authority */
|
|
if (material == authority &&
|
|
_cogl_material_get_parent (authority) != NULL)
|
|
{
|
|
CoglMaterial *parent = _cogl_material_get_parent (authority);
|
|
CoglMaterial *old_authority =
|
|
_cogl_material_get_authority (parent, state);
|
|
|
|
if (old_authority->big_state->user_program == program)
|
|
material->differences &= ~state;
|
|
}
|
|
else if (material != authority)
|
|
{
|
|
/* If we weren't previously the authority on this state then we
|
|
* need to extended our differences mask and so it's possible
|
|
* that some of our ancestry will now become redundant, so we
|
|
* aim to reparent ourselves if that's true... */
|
|
material->differences |= state;
|
|
_cogl_material_prune_redundant_ancestry (material);
|
|
}
|
|
|
|
if (program != COGL_INVALID_HANDLE)
|
|
cogl_handle_ref (program);
|
|
if (authority == material &&
|
|
material->big_state->user_program != COGL_INVALID_HANDLE)
|
|
cogl_handle_unref (material->big_state->user_program);
|
|
material->big_state->user_program = program;
|
|
|
|
handle_automatic_blend_enable (material, state);
|
|
}
|
|
|
|
void
|
|
cogl_material_set_depth_test_enabled (CoglMaterial *material,
|
|
gboolean enable)
|
|
{
|
|
CoglMaterialState state = COGL_MATERIAL_STATE_DEPTH;
|
|
CoglMaterial *authority;
|
|
CoglMaterialDepthState *depth_state;
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
authority = _cogl_material_get_authority (material, state);
|
|
|
|
depth_state = &authority->big_state->depth_state;
|
|
if (depth_state->depth_test_enabled == enable)
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the material has no dependants so it may be modified.
|
|
* - If the material isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_material_pre_change_notify (material, state, NULL);
|
|
|
|
material->big_state->depth_state.depth_test_enabled = enable;
|
|
|
|
_cogl_material_update_authority (material, authority, state,
|
|
_cogl_material_depth_state_equal);
|
|
}
|
|
|
|
gboolean
|
|
cogl_material_get_depth_test_enabled (CoglMaterial *material)
|
|
{
|
|
CoglMaterial *authority;
|
|
|
|
g_return_val_if_fail (cogl_is_material (material), FALSE);
|
|
|
|
authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_DEPTH);
|
|
|
|
return authority->big_state->depth_state.depth_test_enabled;
|
|
}
|
|
|
|
void
|
|
cogl_material_set_depth_writing_enabled (CoglMaterial *material,
|
|
gboolean enable)
|
|
{
|
|
CoglMaterialState state = COGL_MATERIAL_STATE_DEPTH;
|
|
CoglMaterial *authority;
|
|
CoglMaterialDepthState *depth_state;
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
authority = _cogl_material_get_authority (material, state);
|
|
|
|
depth_state = &authority->big_state->depth_state;
|
|
if (depth_state->depth_writing_enabled == enable)
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the material has no dependants so it may be modified.
|
|
* - If the material isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_material_pre_change_notify (material, state, NULL);
|
|
|
|
material->big_state->depth_state.depth_writing_enabled = enable;
|
|
|
|
_cogl_material_update_authority (material, authority, state,
|
|
_cogl_material_depth_state_equal);
|
|
}
|
|
|
|
gboolean
|
|
cogl_material_get_depth_writing_enabled (CoglMaterial *material)
|
|
{
|
|
CoglMaterial *authority;
|
|
|
|
g_return_val_if_fail (cogl_is_material (material), TRUE);
|
|
|
|
authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_DEPTH);
|
|
|
|
return authority->big_state->depth_state.depth_writing_enabled;
|
|
}
|
|
|
|
void
|
|
cogl_material_set_depth_test_function (CoglMaterial *material,
|
|
CoglDepthTestFunction function)
|
|
{
|
|
CoglMaterialState state = COGL_MATERIAL_STATE_DEPTH;
|
|
CoglMaterial *authority;
|
|
CoglMaterialDepthState *depth_state;
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
authority = _cogl_material_get_authority (material, state);
|
|
|
|
depth_state = &authority->big_state->depth_state;
|
|
if (depth_state->depth_test_function == function)
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the material has no dependants so it may be modified.
|
|
* - If the material isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_material_pre_change_notify (material, state, NULL);
|
|
|
|
material->big_state->depth_state.depth_test_function = function;
|
|
|
|
_cogl_material_update_authority (material, authority, state,
|
|
_cogl_material_depth_state_equal);
|
|
}
|
|
|
|
CoglDepthTestFunction
|
|
cogl_material_get_depth_test_function (CoglMaterial *material)
|
|
{
|
|
CoglMaterial *authority;
|
|
|
|
g_return_val_if_fail (cogl_is_material (material),
|
|
COGL_DEPTH_TEST_FUNCTION_LESS);
|
|
|
|
authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_DEPTH);
|
|
|
|
return authority->big_state->depth_state.depth_test_function;
|
|
}
|
|
|
|
|
|
gboolean
|
|
cogl_material_set_depth_range (CoglMaterial *material,
|
|
float near_val,
|
|
float far_val,
|
|
GError **error)
|
|
{
|
|
#ifndef COGL_HAS_GLES
|
|
CoglMaterialState state = COGL_MATERIAL_STATE_DEPTH;
|
|
CoglMaterial *authority;
|
|
CoglMaterialDepthState *depth_state;
|
|
|
|
g_return_val_if_fail (cogl_is_material (material), FALSE);
|
|
|
|
authority = _cogl_material_get_authority (material, state);
|
|
|
|
depth_state = &authority->big_state->depth_state;
|
|
if (depth_state->depth_range_near == near_val &&
|
|
depth_state->depth_range_far == far_val)
|
|
return TRUE;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the material has no dependants so it may be modified.
|
|
* - If the material isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_material_pre_change_notify (material, state, NULL);
|
|
|
|
material->big_state->depth_state.depth_range_near = near_val;
|
|
material->big_state->depth_state.depth_range_far = far_val;
|
|
|
|
_cogl_material_update_authority (material, authority, state,
|
|
_cogl_material_depth_state_equal);
|
|
return TRUE;
|
|
#else
|
|
g_set_error (error,
|
|
COGL_ERROR,
|
|
COGL_ERROR_UNSUPPORTED,
|
|
"glDepthRange not available on GLES 1");
|
|
return FALSE;
|
|
#endif
|
|
}
|
|
|
|
void
|
|
cogl_material_get_depth_range (CoglMaterial *material,
|
|
float *near_val,
|
|
float *far_val)
|
|
{
|
|
CoglMaterial *authority;
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_DEPTH);
|
|
|
|
*near_val = authority->big_state->depth_state.depth_range_near;
|
|
*far_val = authority->big_state->depth_state.depth_range_far;
|
|
}
|
|
|
|
static void
|
|
_cogl_material_set_fog_state (CoglMaterial *material,
|
|
const CoglMaterialFogState *fog_state)
|
|
{
|
|
CoglMaterialState state = COGL_MATERIAL_STATE_FOG;
|
|
CoglMaterial *authority;
|
|
CoglMaterialFogState *current_fog_state;
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
authority = _cogl_material_get_authority (material, state);
|
|
|
|
current_fog_state = &authority->big_state->fog_state;
|
|
|
|
if (current_fog_state->enabled == fog_state->enabled &&
|
|
cogl_color_equal (¤t_fog_state->color, &fog_state->color) &&
|
|
current_fog_state->mode == fog_state->mode &&
|
|
current_fog_state->density == fog_state->density &&
|
|
current_fog_state->z_near == fog_state->z_near &&
|
|
current_fog_state->z_far == fog_state->z_far)
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the material has no dependants so it may be modified.
|
|
* - If the material isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_material_pre_change_notify (material, state, NULL);
|
|
|
|
material->big_state->fog_state = *fog_state;
|
|
|
|
_cogl_material_update_authority (material, authority, state,
|
|
_cogl_material_fog_state_equal);
|
|
}
|
|
|
|
unsigned long
|
|
_cogl_material_get_age (CoglMaterial *material)
|
|
{
|
|
g_return_val_if_fail (cogl_is_material (material), 0);
|
|
|
|
return material->age;
|
|
}
|
|
|
|
static CoglMaterialLayer *
|
|
_cogl_material_layer_copy (CoglMaterialLayer *src)
|
|
{
|
|
CoglMaterialLayer *layer = g_slice_new (CoglMaterialLayer);
|
|
int i;
|
|
|
|
_cogl_material_node_init (COGL_MATERIAL_NODE (layer));
|
|
|
|
layer->owner = NULL;
|
|
layer->index = src->index;
|
|
layer->differences = 0;
|
|
layer->has_big_state = FALSE;
|
|
|
|
for (i = 0; i < COGL_MATERIAL_N_BACKENDS; i++)
|
|
layer->backend_priv[i] = NULL;
|
|
|
|
_cogl_material_layer_set_parent (layer, src);
|
|
|
|
return _cogl_material_layer_object_new (layer);
|
|
}
|
|
|
|
static void
|
|
_cogl_material_layer_free (CoglMaterialLayer *layer)
|
|
{
|
|
int i;
|
|
|
|
_cogl_material_layer_unparent (COGL_MATERIAL_NODE (layer));
|
|
|
|
/* NB: layers may be used by multiple materials which may be using
|
|
* different backends, therefore we determine which backends to
|
|
* notify based on the private state pointers for each backend...
|
|
*/
|
|
for (i = 0; i < COGL_MATERIAL_N_BACKENDS; i++)
|
|
{
|
|
if (layer->backend_priv[i] && backends[i]->free_layer_priv)
|
|
backends[i]->free_layer_priv (layer);
|
|
}
|
|
|
|
if (layer->differences & COGL_MATERIAL_LAYER_STATE_TEXTURE)
|
|
cogl_handle_unref (layer->texture);
|
|
|
|
if (layer->differences & COGL_MATERIAL_LAYER_STATE_NEEDS_BIG_STATE)
|
|
g_slice_free (CoglMaterialLayerBigState, layer->big_state);
|
|
|
|
g_slice_free (CoglMaterialLayer, layer);
|
|
}
|
|
|
|
/* If a layer has descendants we can't modify it freely
|
|
*
|
|
* If the layer is owned and the owner has descendants we can't
|
|
* modify it freely.
|
|
*
|
|
* In both cases when we can't freely modify a layer we can either:
|
|
* - create a new layer; splice it in to replace the layer so it can
|
|
* be directly modified.
|
|
* XXX: disadvantage is that we have to invalidate the layers_cache
|
|
* for the owner and its descendants.
|
|
* - create a new derived layer and modify that.
|
|
*/
|
|
|
|
/* XXX: how is the caller expected to deal with ref-counting?
|
|
*
|
|
* If the layer can't be freely modified and we return a new layer
|
|
* then that will effectively make the caller own a new reference
|
|
* which doesn't happen if we simply modify the given layer.
|
|
*
|
|
* We could make it consistent by taking a reference on the layer if
|
|
* we don't create a new one. At least this way the caller could
|
|
* deal with it consistently, though the semantics are a bit
|
|
* strange.
|
|
*
|
|
* Alternatively we could leave it to the caller to check
|
|
* ...?
|
|
*/
|
|
|
|
void
|
|
_cogl_material_init_default_layers (void)
|
|
{
|
|
CoglMaterialLayer *layer = g_slice_new0 (CoglMaterialLayer);
|
|
CoglMaterialLayerBigState *big_state =
|
|
g_slice_new0 (CoglMaterialLayerBigState);
|
|
CoglMaterialLayer *new;
|
|
int i;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
_cogl_material_node_init (COGL_MATERIAL_NODE (layer));
|
|
|
|
layer->index = 0;
|
|
|
|
for (i = 0; i < COGL_MATERIAL_N_BACKENDS; i++)
|
|
layer->backend_priv[i] = NULL;
|
|
|
|
layer->differences = COGL_MATERIAL_LAYER_STATE_ALL_SPARSE;
|
|
|
|
layer->unit_index = 0;
|
|
|
|
layer->texture = COGL_INVALID_HANDLE;
|
|
layer->texture_overridden = FALSE;
|
|
|
|
layer->mag_filter = COGL_MATERIAL_FILTER_LINEAR;
|
|
layer->min_filter = COGL_MATERIAL_FILTER_LINEAR;
|
|
|
|
layer->wrap_mode_s = COGL_MATERIAL_WRAP_MODE_AUTOMATIC;
|
|
layer->wrap_mode_t = COGL_MATERIAL_WRAP_MODE_AUTOMATIC;
|
|
layer->wrap_mode_p = COGL_MATERIAL_WRAP_MODE_AUTOMATIC;
|
|
|
|
layer->big_state = big_state;
|
|
layer->has_big_state = TRUE;
|
|
|
|
/* Choose the same default combine mode as OpenGL:
|
|
* RGBA = MODULATE(PREVIOUS[RGBA],TEXTURE[RGBA]) */
|
|
big_state->texture_combine_rgb_func = GL_MODULATE;
|
|
big_state->texture_combine_rgb_src[0] = GL_PREVIOUS;
|
|
big_state->texture_combine_rgb_src[1] = GL_TEXTURE;
|
|
big_state->texture_combine_rgb_op[0] = GL_SRC_COLOR;
|
|
big_state->texture_combine_rgb_op[1] = GL_SRC_COLOR;
|
|
big_state->texture_combine_alpha_func = GL_MODULATE;
|
|
big_state->texture_combine_alpha_src[0] = GL_PREVIOUS;
|
|
big_state->texture_combine_alpha_src[1] = GL_TEXTURE;
|
|
big_state->texture_combine_alpha_op[0] = GL_SRC_ALPHA;
|
|
big_state->texture_combine_alpha_op[1] = GL_SRC_ALPHA;
|
|
|
|
big_state->point_sprite_coords = FALSE;
|
|
|
|
cogl_matrix_init_identity (&big_state->matrix);
|
|
|
|
ctx->default_layer_0 = _cogl_material_layer_object_new (layer);
|
|
|
|
/* TODO: we should make default_layer_n comprise of two
|
|
* descendants of default_layer_0:
|
|
* - the first descendant should change the texture combine
|
|
* to what we expect is most commonly used for multitexturing
|
|
* - the second should revert the above change.
|
|
*
|
|
* why? the documentation for how a new layer is initialized
|
|
* doesn't say that layers > 0 have different defaults so unless
|
|
* we change the documentation we can't use different defaults,
|
|
* but if the user does what we expect and changes the
|
|
* texture combine then we can revert the authority to the
|
|
* first descendant which means we can maximize the number
|
|
* of layers with a common ancestor.
|
|
*
|
|
* The main problem will be that we'll need to disable the
|
|
* optimizations for flattening the ancestry when we make
|
|
* the second descendant which reverts the state.
|
|
*/
|
|
ctx->default_layer_n = _cogl_material_layer_copy (layer);
|
|
new = _cogl_material_set_layer_unit (NULL, ctx->default_layer_n, 1);
|
|
g_assert (new == ctx->default_layer_n);
|
|
/* Since we passed a newly allocated layer we don't expect that
|
|
* _set_layer_unit() will have to allocate *another* layer. */
|
|
|
|
/* Finally we create a dummy dependant for ->default_layer_n which
|
|
* effectively ensures that ->default_layer_n and ->default_layer_0
|
|
* remain immutable.
|
|
*/
|
|
ctx->dummy_layer_dependant =
|
|
_cogl_material_layer_copy (ctx->default_layer_n);
|
|
}
|
|
|
|
static void
|
|
setup_texture_combine_state (CoglBlendStringStatement *statement,
|
|
GLint *texture_combine_func,
|
|
GLint *texture_combine_src,
|
|
GLint *texture_combine_op)
|
|
{
|
|
int i;
|
|
|
|
switch (statement->function->type)
|
|
{
|
|
case COGL_BLEND_STRING_FUNCTION_REPLACE:
|
|
*texture_combine_func = GL_REPLACE;
|
|
break;
|
|
case COGL_BLEND_STRING_FUNCTION_MODULATE:
|
|
*texture_combine_func = GL_MODULATE;
|
|
break;
|
|
case COGL_BLEND_STRING_FUNCTION_ADD:
|
|
*texture_combine_func = GL_ADD;
|
|
break;
|
|
case COGL_BLEND_STRING_FUNCTION_ADD_SIGNED:
|
|
*texture_combine_func = GL_ADD_SIGNED;
|
|
break;
|
|
case COGL_BLEND_STRING_FUNCTION_INTERPOLATE:
|
|
*texture_combine_func = GL_INTERPOLATE;
|
|
break;
|
|
case COGL_BLEND_STRING_FUNCTION_SUBTRACT:
|
|
*texture_combine_func = GL_SUBTRACT;
|
|
break;
|
|
case COGL_BLEND_STRING_FUNCTION_DOT3_RGB:
|
|
*texture_combine_func = GL_DOT3_RGB;
|
|
break;
|
|
case COGL_BLEND_STRING_FUNCTION_DOT3_RGBA:
|
|
*texture_combine_func = GL_DOT3_RGBA;
|
|
break;
|
|
}
|
|
|
|
for (i = 0; i < statement->function->argc; i++)
|
|
{
|
|
CoglBlendStringArgument *arg = &statement->args[i];
|
|
|
|
switch (arg->source.info->type)
|
|
{
|
|
case COGL_BLEND_STRING_COLOR_SOURCE_CONSTANT:
|
|
texture_combine_src[i] = GL_CONSTANT;
|
|
break;
|
|
case COGL_BLEND_STRING_COLOR_SOURCE_TEXTURE:
|
|
texture_combine_src[i] = GL_TEXTURE;
|
|
break;
|
|
case COGL_BLEND_STRING_COLOR_SOURCE_TEXTURE_N:
|
|
texture_combine_src[i] =
|
|
GL_TEXTURE0 + arg->source.texture;
|
|
break;
|
|
case COGL_BLEND_STRING_COLOR_SOURCE_PRIMARY:
|
|
texture_combine_src[i] = GL_PRIMARY_COLOR;
|
|
break;
|
|
case COGL_BLEND_STRING_COLOR_SOURCE_PREVIOUS:
|
|
texture_combine_src[i] = GL_PREVIOUS;
|
|
break;
|
|
default:
|
|
g_warning ("Unexpected texture combine source");
|
|
texture_combine_src[i] = GL_TEXTURE;
|
|
}
|
|
|
|
if (arg->source.mask == COGL_BLEND_STRING_CHANNEL_MASK_RGB)
|
|
{
|
|
if (statement->args[i].source.one_minus)
|
|
texture_combine_op[i] = GL_ONE_MINUS_SRC_COLOR;
|
|
else
|
|
texture_combine_op[i] = GL_SRC_COLOR;
|
|
}
|
|
else
|
|
{
|
|
if (statement->args[i].source.one_minus)
|
|
texture_combine_op[i] = GL_ONE_MINUS_SRC_ALPHA;
|
|
else
|
|
texture_combine_op[i] = GL_SRC_ALPHA;
|
|
}
|
|
}
|
|
}
|
|
|
|
gboolean
|
|
cogl_material_set_layer_combine (CoglMaterial *material,
|
|
int layer_index,
|
|
const char *combine_description,
|
|
GError **error)
|
|
{
|
|
CoglMaterialLayerState state = COGL_MATERIAL_LAYER_STATE_COMBINE;
|
|
CoglMaterialLayer *authority;
|
|
CoglMaterialLayer *layer;
|
|
CoglBlendStringStatement statements[2];
|
|
CoglBlendStringStatement split[2];
|
|
CoglBlendStringStatement *rgb;
|
|
CoglBlendStringStatement *a;
|
|
GError *internal_error = NULL;
|
|
int count;
|
|
|
|
g_return_val_if_fail (cogl_is_material (material), FALSE);
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* material. If the layer is created then it will be owned by
|
|
* material. */
|
|
layer = _cogl_material_get_layer (material, layer_index);
|
|
|
|
/* Now find the ancestor of the layer that is the authority for the
|
|
* state we want to change */
|
|
authority = _cogl_material_layer_get_authority (layer, state);
|
|
|
|
count =
|
|
_cogl_blend_string_compile (combine_description,
|
|
COGL_BLEND_STRING_CONTEXT_TEXTURE_COMBINE,
|
|
statements,
|
|
&internal_error);
|
|
if (!count)
|
|
{
|
|
if (error)
|
|
g_propagate_error (error, internal_error);
|
|
else
|
|
{
|
|
g_warning ("Cannot compile combine description: %s\n",
|
|
internal_error->message);
|
|
g_error_free (internal_error);
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
if (statements[0].mask == COGL_BLEND_STRING_CHANNEL_MASK_RGBA)
|
|
{
|
|
_cogl_blend_string_split_rgba_statement (statements,
|
|
&split[0], &split[1]);
|
|
rgb = &split[0];
|
|
a = &split[1];
|
|
}
|
|
else
|
|
{
|
|
rgb = &statements[0];
|
|
a = &statements[1];
|
|
}
|
|
|
|
/* FIXME: compare the new state with the current state! */
|
|
|
|
/* possibly flush primitives referencing the current state... */
|
|
layer = _cogl_material_layer_pre_change_notify (material, layer, state);
|
|
|
|
setup_texture_combine_state (rgb,
|
|
&layer->big_state->texture_combine_rgb_func,
|
|
layer->big_state->texture_combine_rgb_src,
|
|
layer->big_state->texture_combine_rgb_op);
|
|
|
|
setup_texture_combine_state (a,
|
|
&layer->big_state->texture_combine_alpha_func,
|
|
layer->big_state->texture_combine_alpha_src,
|
|
layer->big_state->texture_combine_alpha_op);
|
|
|
|
/* If the original layer we found is currently the authority on
|
|
* the state we are changing see if we can revert to one of our
|
|
* ancestors being the authority. */
|
|
if (layer == authority &&
|
|
_cogl_material_layer_get_parent (authority) != NULL)
|
|
{
|
|
CoglMaterialLayer *parent = _cogl_material_layer_get_parent (authority);
|
|
CoglMaterialLayer *old_authority =
|
|
_cogl_material_layer_get_authority (parent, state);
|
|
|
|
if (_cogl_material_layer_combine_state_equal (authority,
|
|
old_authority))
|
|
{
|
|
layer->differences &= ~state;
|
|
|
|
g_assert (layer->owner == material);
|
|
if (layer->differences == 0)
|
|
_cogl_material_prune_empty_layer_difference (material,
|
|
layer);
|
|
goto changed;
|
|
}
|
|
}
|
|
|
|
/* If we weren't previously the authority on this state then we need
|
|
* to extended our differences mask and so it's possible that some
|
|
* of our ancestry will now become redundant, so we aim to reparent
|
|
* ourselves if that's true... */
|
|
if (layer != authority)
|
|
{
|
|
layer->differences |= state;
|
|
_cogl_material_layer_prune_redundant_ancestry (layer);
|
|
}
|
|
|
|
changed:
|
|
|
|
handle_automatic_blend_enable (material, COGL_MATERIAL_STATE_LAYERS);
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
cogl_material_set_layer_combine_constant (CoglMaterial *material,
|
|
int layer_index,
|
|
const CoglColor *constant_color)
|
|
{
|
|
CoglMaterialLayerState state = COGL_MATERIAL_LAYER_STATE_COMBINE_CONSTANT;
|
|
CoglMaterialLayer *layer;
|
|
CoglMaterialLayer *authority;
|
|
CoglMaterialLayer *new;
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* material. If the layer is created then it will be owned by
|
|
* material. */
|
|
layer = _cogl_material_get_layer (material, layer_index);
|
|
|
|
/* Now find the ancestor of the layer that is the authority for the
|
|
* state we want to change */
|
|
authority = _cogl_material_layer_get_authority (layer, state);
|
|
|
|
if (memcmp (authority->big_state->texture_combine_constant,
|
|
constant_color, sizeof (float) * 4) == 0)
|
|
return;
|
|
|
|
new = _cogl_material_layer_pre_change_notify (material, layer, state);
|
|
if (new != layer)
|
|
layer = new;
|
|
else
|
|
{
|
|
/* If the original layer we found is currently the authority on
|
|
* the state we are changing see if we can revert to one of our
|
|
* ancestors being the authority. */
|
|
if (layer == authority &&
|
|
_cogl_material_layer_get_parent (authority) != NULL)
|
|
{
|
|
CoglMaterialLayer *parent =
|
|
_cogl_material_layer_get_parent (authority);
|
|
CoglMaterialLayer *old_authority =
|
|
_cogl_material_layer_get_authority (parent, state);
|
|
CoglMaterialLayerBigState *old_big_state = old_authority->big_state;
|
|
|
|
if (memcmp (old_big_state->texture_combine_constant,
|
|
constant_color, sizeof (float) * 4) == 0)
|
|
{
|
|
layer->differences &= ~state;
|
|
|
|
g_assert (layer->owner == material);
|
|
if (layer->differences == 0)
|
|
_cogl_material_prune_empty_layer_difference (material,
|
|
layer);
|
|
goto changed;
|
|
}
|
|
}
|
|
}
|
|
|
|
layer->big_state->texture_combine_constant[0] =
|
|
cogl_color_get_red_float (constant_color);
|
|
layer->big_state->texture_combine_constant[1] =
|
|
cogl_color_get_green_float (constant_color);
|
|
layer->big_state->texture_combine_constant[2] =
|
|
cogl_color_get_blue_float (constant_color);
|
|
layer->big_state->texture_combine_constant[3] =
|
|
cogl_color_get_alpha_float (constant_color);
|
|
|
|
/* If we weren't previously the authority on this state then we need
|
|
* to extended our differences mask and so it's possible that some
|
|
* of our ancestry will now become redundant, so we aim to reparent
|
|
* ourselves if that's true... */
|
|
if (layer != authority)
|
|
{
|
|
layer->differences |= state;
|
|
_cogl_material_layer_prune_redundant_ancestry (layer);
|
|
}
|
|
|
|
changed:
|
|
|
|
handle_automatic_blend_enable (material, COGL_MATERIAL_STATE_LAYERS);
|
|
}
|
|
|
|
void
|
|
cogl_material_set_layer_matrix (CoglMaterial *material,
|
|
int layer_index,
|
|
const CoglMatrix *matrix)
|
|
{
|
|
CoglMaterialLayerState state = COGL_MATERIAL_LAYER_STATE_USER_MATRIX;
|
|
CoglMaterialLayer *layer;
|
|
CoglMaterialLayer *authority;
|
|
CoglMaterialLayer *new;
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* material. If the layer is created then it will be owned by
|
|
* material. */
|
|
layer = _cogl_material_get_layer (material, layer_index);
|
|
|
|
/* Now find the ancestor of the layer that is the authority for the
|
|
* state we want to change */
|
|
authority = _cogl_material_layer_get_authority (layer, state);
|
|
|
|
if (cogl_matrix_equal (matrix, &authority->big_state->matrix))
|
|
return;
|
|
|
|
new = _cogl_material_layer_pre_change_notify (material, layer, state);
|
|
if (new != layer)
|
|
layer = new;
|
|
else
|
|
{
|
|
/* If the original layer we found is currently the authority on
|
|
* the state we are changing see if we can revert to one of our
|
|
* ancestors being the authority. */
|
|
if (layer == authority &&
|
|
_cogl_material_layer_get_parent (authority) != NULL)
|
|
{
|
|
CoglMaterialLayer *parent =
|
|
_cogl_material_layer_get_parent (authority);
|
|
CoglMaterialLayer *old_authority =
|
|
_cogl_material_layer_get_authority (parent, state);
|
|
|
|
if (cogl_matrix_equal (matrix, &old_authority->big_state->matrix))
|
|
{
|
|
layer->differences &= ~state;
|
|
|
|
g_assert (layer->owner == material);
|
|
if (layer->differences == 0)
|
|
_cogl_material_prune_empty_layer_difference (material,
|
|
layer);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
layer->big_state->matrix = *matrix;
|
|
|
|
/* If we weren't previously the authority on this state then we need
|
|
* to extended our differences mask and so it's possible that some
|
|
* of our ancestry will now become redundant, so we aim to reparent
|
|
* ourselves if that's true... */
|
|
if (layer != authority)
|
|
{
|
|
layer->differences |= state;
|
|
_cogl_material_layer_prune_redundant_ancestry (layer);
|
|
}
|
|
}
|
|
|
|
void
|
|
cogl_material_remove_layer (CoglMaterial *material, int layer_index)
|
|
{
|
|
CoglMaterial *authority;
|
|
CoglMaterialLayerInfo layer_info;
|
|
int i;
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_LAYERS);
|
|
|
|
/* The layer index of the layer we want info about */
|
|
layer_info.layer_index = layer_index;
|
|
|
|
/* This will be updated with a reference to the layer being removed
|
|
* if it can be found. */
|
|
layer_info.layer = NULL;
|
|
|
|
/* This will be filled in with a list of layers that need to be
|
|
* dropped down to a lower texture unit to fill the gap of the
|
|
* removed layer. */
|
|
layer_info.layers_to_shift =
|
|
g_alloca (sizeof (CoglMaterialLayer *) * authority->n_layers);
|
|
layer_info.n_layers_to_shift = 0;
|
|
|
|
/* Unlike when we query layer info when adding a layer we must
|
|
* always have a complete layers_to_shift list... */
|
|
layer_info.ignore_shift_layers_if_found = FALSE;
|
|
|
|
_cogl_material_get_layer_info (authority, &layer_info);
|
|
|
|
if (layer_info.layer == NULL)
|
|
return;
|
|
|
|
for (i = 0; i < layer_info.n_layers_to_shift; i++)
|
|
{
|
|
CoglMaterialLayer *shift_layer = layer_info.layers_to_shift[i];
|
|
int unit_index = _cogl_material_layer_get_unit_index (shift_layer);
|
|
_cogl_material_set_layer_unit (material, shift_layer, unit_index - 1);
|
|
/* NB: shift_layer may not be writeable so _set_layer_unit()
|
|
* will allocate a derived layer internally which will become
|
|
* owned by material. Check the return value if we need to do
|
|
* anything else with this layer. */
|
|
}
|
|
|
|
_cogl_material_remove_layer_difference (material, layer_info.layer, TRUE);
|
|
_cogl_material_try_reverting_layers_authority (material, NULL);
|
|
|
|
handle_automatic_blend_enable (material, COGL_MATERIAL_STATE_LAYERS);
|
|
}
|
|
|
|
static gboolean
|
|
prepend_layer_to_list_cb (CoglMaterialLayer *layer,
|
|
void *user_data)
|
|
{
|
|
GList **layers = user_data;
|
|
|
|
*layers = g_list_prepend (*layers, layer);
|
|
return TRUE;
|
|
}
|
|
|
|
/* TODO: deprecate this API and replace it with
|
|
* cogl_material_foreach_layer
|
|
* TODO: update the docs to note that if the user modifies any layers
|
|
* then the list may become invalid.
|
|
*/
|
|
const GList *
|
|
cogl_material_get_layers (CoglMaterial *material)
|
|
{
|
|
g_return_val_if_fail (cogl_is_material (material), NULL);
|
|
|
|
if (!material->deprecated_get_layers_list_dirty)
|
|
g_list_free (material->deprecated_get_layers_list);
|
|
|
|
material->deprecated_get_layers_list = NULL;
|
|
|
|
_cogl_material_foreach_layer (material,
|
|
prepend_layer_to_list_cb,
|
|
&material->deprecated_get_layers_list);
|
|
material->deprecated_get_layers_list =
|
|
g_list_reverse (material->deprecated_get_layers_list);
|
|
|
|
material->deprecated_get_layers_list_dirty = 0;
|
|
|
|
return material->deprecated_get_layers_list;
|
|
}
|
|
|
|
int
|
|
cogl_material_get_n_layers (CoglMaterial *material)
|
|
{
|
|
CoglMaterial *authority;
|
|
|
|
g_return_val_if_fail (cogl_is_material (material), 0);
|
|
|
|
authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_LAYERS);
|
|
|
|
return authority->n_layers;
|
|
}
|
|
|
|
/* FIXME: deprecate and replace with
|
|
* cogl_material_get_layer_type() instead. */
|
|
CoglMaterialLayerType
|
|
cogl_material_layer_get_type (CoglMaterialLayer *layer)
|
|
{
|
|
return COGL_MATERIAL_LAYER_TYPE_TEXTURE;
|
|
}
|
|
|
|
/* FIXME: deprecate and replace with
|
|
* cogl_material_get_layer_texture() instead. */
|
|
CoglHandle
|
|
cogl_material_layer_get_texture (CoglMaterialLayer *layer)
|
|
{
|
|
g_return_val_if_fail (_cogl_is_material_layer (layer),
|
|
COGL_INVALID_HANDLE);
|
|
|
|
return _cogl_material_layer_get_texture (layer);
|
|
}
|
|
|
|
gboolean
|
|
_cogl_material_layer_has_user_matrix (CoglMaterialLayer *layer)
|
|
{
|
|
CoglMaterialLayer *authority;
|
|
|
|
g_return_val_if_fail (_cogl_is_material_layer (layer), FALSE);
|
|
|
|
authority =
|
|
_cogl_material_layer_get_authority (layer,
|
|
COGL_MATERIAL_LAYER_STATE_USER_MATRIX);
|
|
|
|
/* If the authority is the default material then no, otherwise yes */
|
|
return _cogl_material_layer_get_parent (authority) ? TRUE : FALSE;
|
|
}
|
|
|
|
static void
|
|
_cogl_material_layer_get_filters (CoglMaterialLayer *layer,
|
|
CoglMaterialFilter *min_filter,
|
|
CoglMaterialFilter *mag_filter)
|
|
{
|
|
CoglMaterialLayer *authority =
|
|
_cogl_material_layer_get_authority (layer,
|
|
COGL_MATERIAL_LAYER_STATE_FILTERS);
|
|
|
|
*min_filter = authority->min_filter;
|
|
*mag_filter = authority->mag_filter;
|
|
}
|
|
|
|
void
|
|
_cogl_material_layer_pre_paint (CoglMaterialLayer *layer)
|
|
{
|
|
CoglMaterialLayer *texture_authority;
|
|
|
|
texture_authority =
|
|
_cogl_material_layer_get_authority (layer,
|
|
COGL_MATERIAL_LAYER_STATE_TEXTURE);
|
|
|
|
if (texture_authority->texture != COGL_INVALID_HANDLE)
|
|
{
|
|
CoglTexturePrePaintFlags flags = 0;
|
|
CoglMaterialFilter min_filter;
|
|
CoglMaterialFilter mag_filter;
|
|
|
|
_cogl_material_layer_get_filters (layer, &min_filter, &mag_filter);
|
|
|
|
if (min_filter == COGL_MATERIAL_FILTER_NEAREST_MIPMAP_NEAREST
|
|
|| min_filter == COGL_MATERIAL_FILTER_LINEAR_MIPMAP_NEAREST
|
|
|| min_filter == COGL_MATERIAL_FILTER_NEAREST_MIPMAP_LINEAR
|
|
|| min_filter == COGL_MATERIAL_FILTER_LINEAR_MIPMAP_LINEAR)
|
|
flags |= COGL_TEXTURE_NEEDS_MIPMAP;
|
|
|
|
_cogl_texture_pre_paint (layer->texture, flags);
|
|
}
|
|
}
|
|
|
|
CoglMaterialFilter
|
|
cogl_material_layer_get_min_filter (CoglMaterialLayer *layer)
|
|
{
|
|
CoglMaterialLayer *authority;
|
|
|
|
g_return_val_if_fail (_cogl_is_material_layer (layer), 0);
|
|
|
|
authority =
|
|
_cogl_material_layer_get_authority (layer,
|
|
COGL_MATERIAL_LAYER_STATE_FILTERS);
|
|
|
|
return authority->min_filter;
|
|
}
|
|
|
|
CoglMaterialFilter
|
|
cogl_material_layer_get_mag_filter (CoglMaterialLayer *layer)
|
|
{
|
|
CoglMaterialLayer *authority;
|
|
|
|
g_return_val_if_fail (_cogl_is_material_layer (layer), 0);
|
|
|
|
authority =
|
|
_cogl_material_layer_get_authority (layer,
|
|
COGL_MATERIAL_LAYER_STATE_FILTERS);
|
|
|
|
return authority->mag_filter;
|
|
}
|
|
|
|
void
|
|
cogl_material_set_layer_filters (CoglMaterial *material,
|
|
int layer_index,
|
|
CoglMaterialFilter min_filter,
|
|
CoglMaterialFilter mag_filter)
|
|
{
|
|
CoglMaterialLayerState state = COGL_MATERIAL_LAYER_STATE_FILTERS;
|
|
CoglMaterialLayer *layer;
|
|
CoglMaterialLayer *authority;
|
|
CoglMaterialLayer *new;
|
|
|
|
g_return_if_fail (cogl_is_material (material));
|
|
|
|
/* Note: this will ensure that the layer exists, creating one if it
|
|
* doesn't already.
|
|
*
|
|
* Note: If the layer already existed it's possibly owned by another
|
|
* material. If the layer is created then it will be owned by
|
|
* material. */
|
|
layer = _cogl_material_get_layer (material, layer_index);
|
|
|
|
/* Now find the ancestor of the layer that is the authority for the
|
|
* state we want to change */
|
|
authority = _cogl_material_layer_get_authority (layer, state);
|
|
|
|
if (authority->min_filter == min_filter &&
|
|
authority->mag_filter == mag_filter)
|
|
return;
|
|
|
|
new = _cogl_material_layer_pre_change_notify (material, layer, state);
|
|
if (new != layer)
|
|
layer = new;
|
|
else
|
|
{
|
|
/* If the original layer we found is currently the authority on
|
|
* the state we are changing see if we can revert to one of our
|
|
* ancestors being the authority. */
|
|
if (layer == authority &&
|
|
_cogl_material_layer_get_parent (authority) != NULL)
|
|
{
|
|
CoglMaterialLayer *parent =
|
|
_cogl_material_layer_get_parent (authority);
|
|
CoglMaterialLayer *old_authority =
|
|
_cogl_material_layer_get_authority (parent, state);
|
|
|
|
if (old_authority->min_filter == min_filter &&
|
|
old_authority->mag_filter == mag_filter)
|
|
{
|
|
layer->differences &= ~state;
|
|
|
|
g_assert (layer->owner == material);
|
|
if (layer->differences == 0)
|
|
_cogl_material_prune_empty_layer_difference (material,
|
|
layer);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
layer->min_filter = min_filter;
|
|
layer->mag_filter = mag_filter;
|
|
|
|
/* If we weren't previously the authority on this state then we need
|
|
* to extended our differences mask and so it's possible that some
|
|
* of our ancestry will now become redundant, so we aim to reparent
|
|
* ourselves if that's true... */
|
|
if (layer != authority)
|
|
{
|
|
layer->differences |= state;
|
|
_cogl_material_layer_prune_redundant_ancestry (layer);
|
|
}
|
|
}
|
|
|
|
float
|
|
cogl_material_get_point_size (CoglHandle handle)
|
|
{
|
|
CoglMaterial *material = COGL_MATERIAL (handle);
|
|
CoglMaterial *authority;
|
|
|
|
g_return_val_if_fail (cogl_is_material (handle), FALSE);
|
|
|
|
authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_POINT_SIZE);
|
|
|
|
return authority->big_state->point_size;
|
|
}
|
|
|
|
void
|
|
cogl_material_set_point_size (CoglHandle handle,
|
|
float point_size)
|
|
{
|
|
CoglMaterial *material = COGL_MATERIAL (handle);
|
|
CoglMaterialState state = COGL_MATERIAL_STATE_POINT_SIZE;
|
|
CoglMaterial *authority;
|
|
|
|
g_return_if_fail (cogl_is_material (handle));
|
|
|
|
authority = _cogl_material_get_authority (material, state);
|
|
|
|
if (authority->big_state->point_size == point_size)
|
|
return;
|
|
|
|
/* - Flush journal primitives referencing the current state.
|
|
* - Make sure the material has no dependants so it may be modified.
|
|
* - If the material isn't currently an authority for the state being
|
|
* changed, then initialize that state from the current authority.
|
|
*/
|
|
_cogl_material_pre_change_notify (material, state, NULL);
|
|
|
|
material->big_state->point_size = point_size;
|
|
|
|
_cogl_material_update_authority (material, authority, state,
|
|
_cogl_material_point_size_equal);
|
|
}
|
|
|
|
static void
|
|
disable_texture_unit (int unit_index)
|
|
{
|
|
CoglTextureUnit *unit;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
unit = &g_array_index (ctx->texture_units, CoglTextureUnit, unit_index);
|
|
|
|
if (unit->enabled)
|
|
{
|
|
_cogl_set_active_texture_unit (unit_index);
|
|
GE (glDisable (unit->current_gl_target));
|
|
unit->enabled = FALSE;
|
|
}
|
|
}
|
|
|
|
void
|
|
_cogl_gl_use_program_wrapper (GLuint program)
|
|
{
|
|
#ifdef COGL_MATERIAL_BACKEND_GLSL
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
if (ctx->current_gl_program == program)
|
|
return;
|
|
|
|
if (program)
|
|
{
|
|
GLenum gl_error;
|
|
|
|
while ((gl_error = glGetError ()) != GL_NO_ERROR)
|
|
;
|
|
glUseProgram (program);
|
|
if (glGetError () != GL_NO_ERROR)
|
|
{
|
|
GE (glUseProgram (0));
|
|
ctx->current_gl_program = 0;
|
|
return;
|
|
}
|
|
}
|
|
else
|
|
GE (glUseProgram (0));
|
|
|
|
ctx->current_gl_program = program;
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
disable_glsl (void)
|
|
{
|
|
#ifdef COGL_MATERIAL_BACKEND_GLSL
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
if (ctx->current_use_program_type == COGL_MATERIAL_PROGRAM_TYPE_GLSL)
|
|
_cogl_gl_use_program_wrapper (0);
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
disable_arbfp (void)
|
|
{
|
|
#ifdef COGL_MATERIAL_BACKEND_ARBFP
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
if (ctx->current_use_program_type == COGL_MATERIAL_PROGRAM_TYPE_ARBFP)
|
|
GE (glDisable (GL_FRAGMENT_PROGRAM_ARB));
|
|
#endif
|
|
}
|
|
|
|
void
|
|
_cogl_use_program (CoglHandle program_handle, CoglMaterialProgramType type)
|
|
{
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
switch (type)
|
|
{
|
|
#ifdef COGL_MATERIAL_BACKEND_GLSL
|
|
case COGL_MATERIAL_PROGRAM_TYPE_GLSL:
|
|
{
|
|
/* The GLES2 backend currently manages its own codegen for
|
|
* fixed function API fallbacks and manages its own shader
|
|
* state. */
|
|
#ifndef HAVE_COGL_GLES2
|
|
CoglProgram *program =
|
|
_cogl_program_pointer_from_handle (program_handle);
|
|
|
|
_cogl_gl_use_program_wrapper (program->gl_handle);
|
|
disable_arbfp ();
|
|
#endif
|
|
|
|
ctx->current_use_program_type = type;
|
|
break;
|
|
}
|
|
#else
|
|
case COGL_MATERIAL_PROGRAM_TYPE_GLSL:
|
|
g_warning ("Unexpected use of GLSL backend!");
|
|
break;
|
|
#endif
|
|
#ifdef COGL_MATERIAL_BACKEND_ARBFP
|
|
case COGL_MATERIAL_PROGRAM_TYPE_ARBFP:
|
|
|
|
/* _cogl_gl_use_program_wrapper can be called by cogl-program.c
|
|
* so we can't bailout without making sure we glUseProgram (0)
|
|
* first. */
|
|
disable_glsl ();
|
|
|
|
if (ctx->current_use_program_type == COGL_MATERIAL_PROGRAM_TYPE_ARBFP)
|
|
break;
|
|
|
|
GE (glEnable (GL_FRAGMENT_PROGRAM_ARB));
|
|
|
|
ctx->current_use_program_type = type;
|
|
break;
|
|
#else
|
|
case COGL_MATERIAL_PROGRAM_TYPE_ARBFP:
|
|
g_warning ("Unexpected use of GLSL backend!");
|
|
break;
|
|
#endif
|
|
#ifdef COGL_MATERIAL_BACKEND_FIXED
|
|
case COGL_MATERIAL_PROGRAM_TYPE_FIXED:
|
|
|
|
/* _cogl_gl_use_program_wrapper can be called by cogl-program.c
|
|
* so we can't bailout without making sure we glUseProgram (0)
|
|
* first. */
|
|
disable_glsl ();
|
|
|
|
if (ctx->current_use_program_type == COGL_MATERIAL_PROGRAM_TYPE_FIXED)
|
|
break;
|
|
|
|
disable_arbfp ();
|
|
|
|
ctx->current_use_program_type = type;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
#if defined (COGL_MATERIAL_BACKEND_GLSL) || \
|
|
defined (COGL_MATERIAL_BACKEND_ARBFP)
|
|
int
|
|
_cogl_get_max_texture_image_units (void)
|
|
{
|
|
_COGL_GET_CONTEXT (ctx, 0);
|
|
|
|
/* This function is called quite often so we cache the value to
|
|
avoid too many GL calls */
|
|
if (G_UNLIKELY (ctx->max_texture_image_units == -1))
|
|
{
|
|
ctx->max_texture_image_units = 1;
|
|
GE (glGetIntegerv (GL_MAX_TEXTURE_IMAGE_UNITS,
|
|
&ctx->max_texture_image_units));
|
|
}
|
|
|
|
return ctx->max_texture_image_units;
|
|
}
|
|
#endif
|
|
|
|
static void
|
|
_cogl_material_layer_get_texture_info (CoglMaterialLayer *layer,
|
|
CoglHandle *texture,
|
|
GLuint *gl_texture,
|
|
GLuint *gl_target)
|
|
{
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
*texture = layer->texture;
|
|
if (G_UNLIKELY (*texture == COGL_INVALID_HANDLE))
|
|
*texture = ctx->default_gl_texture_2d_tex;
|
|
if (layer->texture_overridden)
|
|
{
|
|
*gl_texture = layer->slice_gl_texture;
|
|
*gl_target = layer->slice_gl_target;
|
|
}
|
|
else
|
|
cogl_texture_get_gl_texture (*texture, gl_texture, gl_target);
|
|
}
|
|
|
|
#ifndef HAVE_COGL_GLES
|
|
|
|
static gboolean
|
|
blend_factor_uses_constant (GLenum blend_factor)
|
|
{
|
|
return (blend_factor == GL_CONSTANT_COLOR ||
|
|
blend_factor == GL_ONE_MINUS_CONSTANT_COLOR ||
|
|
blend_factor == GL_CONSTANT_ALPHA ||
|
|
blend_factor == GL_ONE_MINUS_CONSTANT_ALPHA);
|
|
}
|
|
|
|
#endif
|
|
|
|
static void
|
|
flush_depth_state (CoglMaterialDepthState *depth_state)
|
|
{
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
if (ctx->depth_test_function_cache != depth_state->depth_test_function)
|
|
{
|
|
GE (glDepthFunc (depth_state->depth_test_function));
|
|
ctx->depth_test_function_cache = depth_state->depth_test_function;
|
|
}
|
|
|
|
if (ctx->depth_writing_enabled_cache != depth_state->depth_writing_enabled)
|
|
{
|
|
GE (glDepthMask (depth_state->depth_writing_enabled ?
|
|
GL_TRUE : GL_FALSE));
|
|
ctx->depth_writing_enabled_cache = depth_state->depth_writing_enabled;
|
|
}
|
|
|
|
#ifndef COGL_HAS_GLES
|
|
if (ctx->depth_range_near_cache != depth_state->depth_range_near ||
|
|
ctx->depth_range_far_cache != depth_state->depth_range_far)
|
|
{
|
|
#ifdef COGL_HAS_GLES2
|
|
GE (glDepthRangef (depth_state->depth_range_near,
|
|
depth_state->depth_range_far));
|
|
#else
|
|
GE (glDepthRange (depth_state->depth_range_near,
|
|
depth_state->depth_range_far));
|
|
#endif
|
|
ctx->depth_range_near_cache = depth_state->depth_range_near;
|
|
ctx->depth_range_far_cache = depth_state->depth_range_far;
|
|
}
|
|
#endif /* COGL_HAS_GLES */
|
|
}
|
|
|
|
static void
|
|
_cogl_material_flush_color_blend_alpha_depth_state (
|
|
CoglMaterial *material,
|
|
unsigned long materials_difference,
|
|
gboolean skip_gl_color)
|
|
{
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
if (!skip_gl_color)
|
|
{
|
|
if ((materials_difference & COGL_MATERIAL_STATE_COLOR) ||
|
|
/* Assume if we were previously told to skip the color, then
|
|
* the current color needs updating... */
|
|
ctx->current_material_skip_gl_color)
|
|
{
|
|
CoglMaterial *authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_COLOR);
|
|
GE (glColor4ub (cogl_color_get_red_byte (&authority->color),
|
|
cogl_color_get_green_byte (&authority->color),
|
|
cogl_color_get_blue_byte (&authority->color),
|
|
cogl_color_get_alpha_byte (&authority->color)));
|
|
}
|
|
}
|
|
|
|
if (materials_difference & COGL_MATERIAL_STATE_LIGHTING)
|
|
{
|
|
CoglMaterial *authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_LIGHTING);
|
|
CoglMaterialLightingState *lighting_state =
|
|
&authority->big_state->lighting_state;
|
|
|
|
/* FIXME - we only need to set these if lighting is enabled... */
|
|
GLfloat shininess = lighting_state->shininess * 128.0f;
|
|
|
|
GE (glMaterialfv (GL_FRONT_AND_BACK, GL_AMBIENT, lighting_state->ambient));
|
|
GE (glMaterialfv (GL_FRONT_AND_BACK, GL_DIFFUSE, lighting_state->diffuse));
|
|
GE (glMaterialfv (GL_FRONT_AND_BACK, GL_SPECULAR, lighting_state->specular));
|
|
GE (glMaterialfv (GL_FRONT_AND_BACK, GL_EMISSION, lighting_state->emission));
|
|
GE (glMaterialfv (GL_FRONT_AND_BACK, GL_SHININESS, &shininess));
|
|
}
|
|
|
|
if (materials_difference & COGL_MATERIAL_STATE_BLEND)
|
|
{
|
|
CoglMaterial *authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_BLEND);
|
|
CoglMaterialBlendState *blend_state =
|
|
&authority->big_state->blend_state;
|
|
|
|
#if defined (HAVE_COGL_GLES2)
|
|
gboolean have_blend_equation_seperate = TRUE;
|
|
gboolean have_blend_func_separate = TRUE;
|
|
#elif defined (HAVE_COGL_GL)
|
|
gboolean have_blend_equation_seperate = FALSE;
|
|
gboolean have_blend_func_separate = FALSE;
|
|
if (ctx->drv.pf_glBlendEquationSeparate) /* Only GL 2.0 + */
|
|
have_blend_equation_seperate = TRUE;
|
|
if (ctx->drv.pf_glBlendFuncSeparate) /* Only GL 1.4 + */
|
|
have_blend_func_separate = TRUE;
|
|
#endif
|
|
|
|
#ifndef HAVE_COGL_GLES /* GLES 1 only has glBlendFunc */
|
|
if (blend_factor_uses_constant (blend_state->blend_src_factor_rgb) ||
|
|
blend_factor_uses_constant (blend_state->blend_src_factor_alpha) ||
|
|
blend_factor_uses_constant (blend_state->blend_dst_factor_rgb) ||
|
|
blend_factor_uses_constant (blend_state->blend_dst_factor_alpha))
|
|
{
|
|
float red =
|
|
cogl_color_get_red_float (&blend_state->blend_constant);
|
|
float green =
|
|
cogl_color_get_green_float (&blend_state->blend_constant);
|
|
float blue =
|
|
cogl_color_get_blue_float (&blend_state->blend_constant);
|
|
float alpha =
|
|
cogl_color_get_alpha_float (&blend_state->blend_constant);
|
|
|
|
|
|
GE (glBlendColor (red, green, blue, alpha));
|
|
}
|
|
|
|
if (have_blend_equation_seperate &&
|
|
blend_state->blend_equation_rgb != blend_state->blend_equation_alpha)
|
|
GE (glBlendEquationSeparate (blend_state->blend_equation_rgb,
|
|
blend_state->blend_equation_alpha));
|
|
else
|
|
GE (glBlendEquation (blend_state->blend_equation_rgb));
|
|
|
|
if (have_blend_func_separate &&
|
|
(blend_state->blend_src_factor_rgb != blend_state->blend_src_factor_alpha ||
|
|
(blend_state->blend_src_factor_rgb !=
|
|
blend_state->blend_src_factor_alpha)))
|
|
GE (glBlendFuncSeparate (blend_state->blend_src_factor_rgb,
|
|
blend_state->blend_dst_factor_rgb,
|
|
blend_state->blend_src_factor_alpha,
|
|
blend_state->blend_dst_factor_alpha));
|
|
else
|
|
#endif
|
|
GE (glBlendFunc (blend_state->blend_src_factor_rgb,
|
|
blend_state->blend_dst_factor_rgb));
|
|
}
|
|
|
|
if (materials_difference & COGL_MATERIAL_STATE_ALPHA_FUNC)
|
|
{
|
|
CoglMaterial *authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_ALPHA_FUNC);
|
|
CoglMaterialAlphaFuncState *alpha_state =
|
|
&authority->big_state->alpha_state;
|
|
|
|
/* NB: Currently the Cogl defines are compatible with the GL ones: */
|
|
GE (glAlphaFunc (alpha_state->alpha_func,
|
|
alpha_state->alpha_func_reference));
|
|
}
|
|
|
|
if (materials_difference & COGL_MATERIAL_STATE_DEPTH)
|
|
{
|
|
CoglMaterial *authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_DEPTH);
|
|
CoglMaterialDepthState *depth_state = &authority->big_state->depth_state;
|
|
|
|
if (depth_state->depth_test_enabled)
|
|
{
|
|
if (ctx->depth_test_enabled_cache != TRUE)
|
|
{
|
|
GE (glEnable (GL_DEPTH_TEST));
|
|
ctx->depth_test_enabled_cache = depth_state->depth_test_enabled;
|
|
}
|
|
flush_depth_state (depth_state);
|
|
}
|
|
else if (ctx->depth_test_enabled_cache != FALSE)
|
|
{
|
|
GE (glDisable (GL_DEPTH_TEST));
|
|
ctx->depth_test_enabled_cache = depth_state->depth_test_enabled;
|
|
}
|
|
}
|
|
|
|
if (materials_difference & COGL_MATERIAL_STATE_POINT_SIZE)
|
|
{
|
|
CoglMaterial *authority =
|
|
_cogl_material_get_authority (material, COGL_MATERIAL_STATE_POINT_SIZE);
|
|
|
|
if (ctx->point_size_cache != authority->big_state->point_size)
|
|
{
|
|
GE( glPointSize (authority->big_state->point_size) );
|
|
ctx->point_size_cache = authority->big_state->point_size;
|
|
}
|
|
}
|
|
|
|
if (material->real_blend_enable != ctx->gl_blend_enable_cache)
|
|
{
|
|
if (material->real_blend_enable)
|
|
GE (glEnable (GL_BLEND));
|
|
else
|
|
GE (glDisable (GL_BLEND));
|
|
/* XXX: we shouldn't update any other blend state if blending
|
|
* is disabled! */
|
|
ctx->gl_blend_enable_cache = material->real_blend_enable;
|
|
}
|
|
}
|
|
|
|
static int
|
|
get_max_activateable_texture_units (void)
|
|
{
|
|
_COGL_GET_CONTEXT (ctx, 0);
|
|
|
|
if (G_UNLIKELY (ctx->max_activateable_texture_units == -1))
|
|
{
|
|
#ifdef HAVE_COGL_GL
|
|
GLint max_tex_coords;
|
|
GLint max_combined_tex_units;
|
|
GE (glGetIntegerv (GL_MAX_TEXTURE_COORDS, &max_tex_coords));
|
|
GE (glGetIntegerv (GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS,
|
|
&max_combined_tex_units));
|
|
ctx->max_activateable_texture_units =
|
|
MAX (max_tex_coords - 1, max_combined_tex_units);
|
|
#else
|
|
GE (glGetIntegerv (GL_MAX_TEXTURE_UNITS,
|
|
&ctx->max_activateable_texture_units));
|
|
#endif
|
|
}
|
|
|
|
return ctx->max_activateable_texture_units;
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
int i;
|
|
unsigned long *layer_differences;
|
|
} CoglMaterialFlushLayerState;
|
|
|
|
static gboolean
|
|
flush_layers_common_gl_state_cb (CoglMaterialLayer *layer, void *user_data)
|
|
{
|
|
CoglMaterialFlushLayerState *flush_state = user_data;
|
|
int unit_index = flush_state->i;
|
|
CoglTextureUnit *unit = _cogl_get_texture_unit (unit_index);
|
|
unsigned long layers_difference =
|
|
flush_state->layer_differences[unit_index];
|
|
|
|
/* There may not be enough texture units so we can bail out if
|
|
* that's the case...
|
|
*/
|
|
if (G_UNLIKELY (unit_index >= get_max_activateable_texture_units ()))
|
|
{
|
|
static gboolean shown_warning = FALSE;
|
|
|
|
if (!shown_warning)
|
|
{
|
|
g_warning ("Your hardware does not have enough texture units"
|
|
"to handle this many texture layers");
|
|
shown_warning = TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
if (layers_difference & COGL_MATERIAL_LAYER_STATE_TEXTURE)
|
|
{
|
|
CoglMaterialLayer *authority =
|
|
_cogl_material_layer_get_authority (layer,
|
|
COGL_MATERIAL_LAYER_STATE_TEXTURE);
|
|
CoglHandle texture = NULL;
|
|
GLuint gl_texture;
|
|
GLenum gl_target;
|
|
|
|
_cogl_material_layer_get_texture_info (authority,
|
|
&texture,
|
|
&gl_texture,
|
|
&gl_target);
|
|
|
|
_cogl_set_active_texture_unit (unit_index);
|
|
|
|
/* NB: There are several Cogl components and some code in
|
|
* Clutter that will temporarily bind arbitrary GL textures to
|
|
* query and modify texture object parameters. If you look at
|
|
* _cogl_bind_gl_texture_transient() you can see we make sure
|
|
* that such code always binds to texture unit 1 which means we
|
|
* can't rely on the unit->gl_texture state if unit->index == 1.
|
|
*
|
|
* Because texture unit 1 is a bit special we actually defer any
|
|
* necessary glBindTexture for it until the end of
|
|
* _cogl_material_flush_gl_state().
|
|
*
|
|
* NB: we get notified whenever glDeleteTextures is used (see
|
|
* _cogl_delete_gl_texture()) where we invalidate
|
|
* unit->gl_texture references to deleted textures so it's safe
|
|
* to compare unit->gl_texture with gl_texture. (Without the
|
|
* hook it would be possible to delete a GL texture and create a
|
|
* new one with the same name and comparing unit->gl_texture and
|
|
* gl_texture wouldn't detect that.)
|
|
*
|
|
* NB: for foreign textures we don't know how the deletion of
|
|
* the GL texture objects correspond to the deletion of the
|
|
* CoglTextures so if there was previously a foreign texture
|
|
* associated with the texture unit then we can't assume that we
|
|
* aren't seeing a recycled texture name so we have to bind.
|
|
*/
|
|
if (unit->gl_texture != gl_texture || unit->is_foreign)
|
|
{
|
|
if (unit_index != 1)
|
|
GE (glBindTexture (gl_target, gl_texture));
|
|
unit->gl_texture = gl_texture;
|
|
}
|
|
|
|
unit->is_foreign = _cogl_texture_is_foreign (texture);
|
|
|
|
/* Disable the previous target if it was different and it's
|
|
* still enabled */
|
|
if (unit->enabled && unit->current_gl_target != gl_target)
|
|
GE (glDisable (unit->current_gl_target));
|
|
|
|
if (!G_UNLIKELY (cogl_debug_flags & COGL_DEBUG_DISABLE_TEXTURING) &&
|
|
(!unit->enabled || unit->current_gl_target != gl_target))
|
|
{
|
|
GE (glEnable (gl_target));
|
|
unit->enabled = TRUE;
|
|
unit->current_gl_target = gl_target;
|
|
}
|
|
|
|
/* The texture_storage_changed boolean indicates if the
|
|
* CoglTexture's underlying GL texture storage has changed since
|
|
* it was flushed to the texture unit. We've just flushed the
|
|
* latest state so we can reset this. */
|
|
unit->texture_storage_changed = FALSE;
|
|
}
|
|
else
|
|
{
|
|
/* Even though there may be no difference between the last flushed
|
|
* texture state and the current layers texture state it may be that the
|
|
* texture unit has been disabled for some time so we need to assert that
|
|
* it's enabled now.
|
|
*/
|
|
if (!G_UNLIKELY (cogl_debug_flags & COGL_DEBUG_DISABLE_TEXTURING) &&
|
|
!unit->enabled)
|
|
{
|
|
GE (glEnable (unit->current_gl_target));
|
|
unit->enabled = TRUE;
|
|
}
|
|
}
|
|
|
|
if (layers_difference & COGL_MATERIAL_LAYER_STATE_USER_MATRIX)
|
|
{
|
|
CoglMaterialLayerState state = COGL_MATERIAL_LAYER_STATE_USER_MATRIX;
|
|
CoglMaterialLayer *authority =
|
|
_cogl_material_layer_get_authority (layer, state);
|
|
|
|
_cogl_matrix_stack_set (unit->matrix_stack,
|
|
&authority->big_state->matrix);
|
|
|
|
_cogl_matrix_stack_flush_to_gl (unit->matrix_stack, COGL_MATRIX_TEXTURE);
|
|
}
|
|
|
|
if (layers_difference & COGL_MATERIAL_LAYER_STATE_POINT_SPRITE_COORDS)
|
|
{
|
|
CoglMaterialState change = COGL_MATERIAL_LAYER_STATE_POINT_SPRITE_COORDS;
|
|
CoglMaterialLayer *authority =
|
|
_cogl_material_layer_get_authority (layer, change);
|
|
CoglMaterialLayerBigState *big_state = authority->big_state;
|
|
|
|
_cogl_set_active_texture_unit (unit_index);
|
|
|
|
GE (glTexEnvi (GL_POINT_SPRITE, GL_COORD_REPLACE,
|
|
big_state->point_sprite_coords));
|
|
}
|
|
|
|
cogl_handle_ref (layer);
|
|
if (unit->layer != COGL_INVALID_HANDLE)
|
|
cogl_handle_unref (unit->layer);
|
|
|
|
unit->layer = layer;
|
|
unit->layer_changes_since_flush = 0;
|
|
|
|
flush_state->i++;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
_cogl_material_flush_common_gl_state (CoglMaterial *material,
|
|
unsigned long materials_difference,
|
|
unsigned long *layer_differences,
|
|
gboolean skip_gl_color)
|
|
{
|
|
CoglMaterialFlushLayerState state;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
_cogl_material_flush_color_blend_alpha_depth_state (material,
|
|
materials_difference,
|
|
skip_gl_color);
|
|
|
|
state.i = 0;
|
|
state.layer_differences = layer_differences;
|
|
_cogl_material_foreach_layer (material,
|
|
flush_layers_common_gl_state_cb,
|
|
&state);
|
|
|
|
/* Disable additional texture units that may have previously been in use.. */
|
|
for (; state.i < ctx->texture_units->len; state.i++)
|
|
disable_texture_unit (state.i);
|
|
}
|
|
|
|
/* Re-assert the layer's wrap modes on the given CoglTexture.
|
|
*
|
|
* Note: we don't simply forward the wrap modes to layer->texture
|
|
* since the actual texture being used may have been overridden.
|
|
*/
|
|
static void
|
|
_cogl_material_layer_forward_wrap_modes (CoglMaterialLayer *layer,
|
|
CoglHandle texture)
|
|
{
|
|
CoglMaterialWrapModeInternal wrap_mode_s, wrap_mode_t, wrap_mode_p;
|
|
GLenum gl_wrap_mode_s, gl_wrap_mode_t, gl_wrap_mode_p;
|
|
|
|
if (texture == COGL_INVALID_HANDLE)
|
|
return;
|
|
|
|
_cogl_material_layer_get_wrap_modes (layer,
|
|
&wrap_mode_s,
|
|
&wrap_mode_t,
|
|
&wrap_mode_p);
|
|
|
|
/* Update the wrap mode on the texture object. The texture backend
|
|
should cache the value so that it will be a no-op if the object
|
|
already has the same wrap mode set. The backend is best placed to
|
|
do this because it knows how many of the coordinates will
|
|
actually be used (ie, a 1D texture only cares about the 's'
|
|
coordinate but a 3D texture would use all three). GL uses the
|
|
wrap mode as part of the texture object state but we are
|
|
pretending it's part of the per-layer environment state. This
|
|
will break if the application tries to use different modes in
|
|
different layers using the same texture. */
|
|
|
|
if (wrap_mode_s == COGL_MATERIAL_WRAP_MODE_INTERNAL_AUTOMATIC)
|
|
gl_wrap_mode_s = GL_CLAMP_TO_EDGE;
|
|
else
|
|
gl_wrap_mode_s = wrap_mode_s;
|
|
|
|
if (wrap_mode_t == COGL_MATERIAL_WRAP_MODE_INTERNAL_AUTOMATIC)
|
|
gl_wrap_mode_t = GL_CLAMP_TO_EDGE;
|
|
else
|
|
gl_wrap_mode_t = wrap_mode_t;
|
|
|
|
if (wrap_mode_p == COGL_MATERIAL_WRAP_MODE_INTERNAL_AUTOMATIC)
|
|
gl_wrap_mode_p = GL_CLAMP_TO_EDGE;
|
|
else
|
|
gl_wrap_mode_p = wrap_mode_p;
|
|
|
|
_cogl_texture_set_wrap_mode_parameters (texture,
|
|
gl_wrap_mode_s,
|
|
gl_wrap_mode_t,
|
|
gl_wrap_mode_p);
|
|
}
|
|
|
|
/* OpenGL associates the min/mag filters and repeat modes with the
|
|
* texture object not the texture unit so we always have to re-assert
|
|
* the filter and repeat modes whenever we use a texture since it may
|
|
* be referenced by multiple materials with different modes.
|
|
*
|
|
* XXX: GL_ARB_sampler_objects fixes this in OpenGL so we should
|
|
* eventually look at using this extension when available.
|
|
*/
|
|
static void
|
|
foreach_texture_unit_update_filter_and_wrap_modes (void)
|
|
{
|
|
int i;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
for (i = 0; i < ctx->texture_units->len; i++)
|
|
{
|
|
CoglTextureUnit *unit =
|
|
&g_array_index (ctx->texture_units, CoglTextureUnit, i);
|
|
|
|
if (!unit->enabled)
|
|
break;
|
|
|
|
if (unit->layer)
|
|
{
|
|
CoglHandle texture = _cogl_material_layer_get_texture (unit->layer);
|
|
CoglMaterialFilter min;
|
|
CoglMaterialFilter mag;
|
|
|
|
_cogl_material_layer_get_filters (unit->layer, &min, &mag);
|
|
_cogl_texture_set_filters (texture, min, mag);
|
|
|
|
_cogl_material_layer_forward_wrap_modes (unit->layer, texture);
|
|
}
|
|
}
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
int i;
|
|
unsigned long *layer_differences;
|
|
} CoglMaterialCompareLayersState;
|
|
|
|
static gboolean
|
|
compare_layer_differences_cb (CoglMaterialLayer *layer, void *user_data)
|
|
{
|
|
CoglMaterialCompareLayersState *state = user_data;
|
|
CoglTextureUnit *unit = _cogl_get_texture_unit (state->i);
|
|
|
|
if (unit->layer == layer)
|
|
state->layer_differences[state->i] = unit->layer_changes_since_flush;
|
|
else if (unit->layer)
|
|
{
|
|
state->layer_differences[state->i] = unit->layer_changes_since_flush;
|
|
state->layer_differences[state->i] |=
|
|
_cogl_material_layer_compare_differences (layer, unit->layer);
|
|
}
|
|
else
|
|
state->layer_differences[state->i] = COGL_MATERIAL_LAYER_STATE_ALL_SPARSE;
|
|
|
|
/* XXX: There is always a possibility that a CoglTexture's
|
|
* underlying GL texture storage has been changed since it was last
|
|
* bound to a texture unit which is why we have a callback into
|
|
* _cogl_material_texture_storage_change_notify whenever a textures
|
|
* underlying GL texture storage changes which will set the
|
|
* unit->texture_intern_changed flag. If we see that's been set here
|
|
* then we force an update of the texture state...
|
|
*/
|
|
if (unit->texture_storage_changed)
|
|
state->layer_differences[state->i] |= COGL_MATERIAL_LAYER_STATE_TEXTURE;
|
|
|
|
state->i++;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
const CoglMaterialBackend *backend;
|
|
CoglMaterial *material;
|
|
unsigned long *layer_differences;
|
|
gboolean error_adding_layer;
|
|
gboolean added_layer;
|
|
} CoglMaterialBackendAddLayerState;
|
|
|
|
|
|
static gboolean
|
|
backend_add_layer_cb (CoglMaterialLayer *layer,
|
|
void *user_data)
|
|
{
|
|
CoglMaterialBackendAddLayerState *state = user_data;
|
|
const CoglMaterialBackend *backend = state->backend;
|
|
CoglMaterial *material = state->material;
|
|
int unit_index = _cogl_material_layer_get_unit_index (layer);
|
|
CoglTextureUnit *unit = _cogl_get_texture_unit (unit_index);
|
|
|
|
_COGL_GET_CONTEXT (ctx, FALSE);
|
|
|
|
/* NB: We don't support the random disabling of texture
|
|
* units, so as soon as we hit a disabled unit we know all
|
|
* subsequent units are also disabled */
|
|
if (!unit->enabled)
|
|
return FALSE;
|
|
|
|
if (G_UNLIKELY (unit_index >= backend->get_max_texture_units ()))
|
|
{
|
|
int j;
|
|
for (j = unit_index; j < ctx->texture_units->len; j++)
|
|
disable_texture_unit (j);
|
|
/* TODO: although this isn't considered an error that
|
|
* warrants falling back to a different backend we
|
|
* should print a warning here. */
|
|
return FALSE;
|
|
}
|
|
|
|
/* Either generate per layer code snippets or setup the
|
|
* fixed function glTexEnv for each layer... */
|
|
if (G_LIKELY (backend->add_layer (material,
|
|
layer,
|
|
state->layer_differences[unit_index])))
|
|
state->added_layer = TRUE;
|
|
else
|
|
{
|
|
state->error_adding_layer = TRUE;
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* _cogl_material_flush_gl_state:
|
|
*
|
|
* Details of override options:
|
|
* ->fallback_mask: is a bitmask of the material layers that need to be
|
|
* replaced with the default, fallback textures. The fallback textures are
|
|
* fully transparent textures so they hopefully wont contribute to the
|
|
* texture combining.
|
|
*
|
|
* The intention of fallbacks is to try and preserve
|
|
* the number of layers the user is expecting so that texture coordinates
|
|
* they gave will mostly still correspond to the textures they intended, and
|
|
* have a fighting chance of looking close to their originally intended
|
|
* result.
|
|
*
|
|
* ->disable_mask: is a bitmask of the material layers that will simply have
|
|
* texturing disabled. It's only really intended for disabling all layers
|
|
* > X; i.e. we'd expect to see a contiguous run of 0 starting from the LSB
|
|
* and at some point the remaining bits flip to 1. It might work to disable
|
|
* arbitrary layers; though I'm not sure a.t.m how OpenGL would take to
|
|
* that.
|
|
*
|
|
* The intention of the disable_mask is for emitting geometry when the user
|
|
* hasn't supplied enough texture coordinates for all the layers and it's
|
|
* not possible to auto generate default texture coordinates for those
|
|
* layers.
|
|
*
|
|
* ->layer0_override_texture: forcibly tells us to bind this GL texture name for
|
|
* layer 0 instead of plucking the gl_texture from the CoglTexture of layer
|
|
* 0.
|
|
*
|
|
* The intention of this is for any primitives that supports sliced textures.
|
|
* The code will can iterate each of the slices and re-flush the material
|
|
* forcing the GL texture of each slice in turn.
|
|
*
|
|
* ->wrap_mode_overrides: overrides the wrap modes set on each
|
|
* layer. This is used to implement the automatic wrap mode.
|
|
*
|
|
* XXX: It might also help if we could specify a texture matrix for code
|
|
* dealing with slicing that would be multiplied with the users own matrix.
|
|
*
|
|
* Normaly texture coords in the range [0, 1] refer to the extents of the
|
|
* texture, but when your GL texture represents a slice of the real texture
|
|
* (from the users POV) then a texture matrix would be a neat way of
|
|
* transforming the mapping for each slice.
|
|
*
|
|
* Currently for textured rectangles we manually calculate the texture
|
|
* coords for each slice based on the users given coords, but this solution
|
|
* isn't ideal, and can't be used with CoglVertexBuffers.
|
|
*/
|
|
void
|
|
_cogl_material_flush_gl_state (CoglMaterial *material,
|
|
gboolean skip_gl_color)
|
|
{
|
|
unsigned long materials_difference;
|
|
int n_layers;
|
|
unsigned long *layer_differences = NULL;
|
|
int i;
|
|
CoglTextureUnit *unit1;
|
|
|
|
COGL_STATIC_TIMER (material_flush_timer,
|
|
"Mainloop", /* parent */
|
|
"Material Flush",
|
|
"The time spent flushing material state",
|
|
0 /* no application private data */);
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
COGL_TIMER_START (_cogl_uprof_context, material_flush_timer);
|
|
|
|
if (ctx->current_material == material)
|
|
materials_difference = ctx->current_material_changes_since_flush;
|
|
else if (ctx->current_material)
|
|
{
|
|
materials_difference = ctx->current_material_changes_since_flush;
|
|
materials_difference |=
|
|
_cogl_material_compare_differences (ctx->current_material,
|
|
material);
|
|
}
|
|
else
|
|
materials_difference = COGL_MATERIAL_STATE_ALL_SPARSE;
|
|
|
|
/* Get a layer_differences mask for each layer to be flushed */
|
|
n_layers = cogl_material_get_n_layers (material);
|
|
if (n_layers)
|
|
{
|
|
CoglMaterialCompareLayersState state;
|
|
layer_differences = g_alloca (sizeof (unsigned long *) * n_layers);
|
|
memset (layer_differences, 0, sizeof (layer_differences));
|
|
state.i = 0;
|
|
state.layer_differences = layer_differences;
|
|
_cogl_material_foreach_layer (material,
|
|
compare_layer_differences_cb,
|
|
&state);
|
|
}
|
|
|
|
/* First flush everything that's the same regardless of which
|
|
* material backend is being used...
|
|
*
|
|
* 1) top level state:
|
|
* glColor (or skip if a vertex attribute is being used for color)
|
|
* blend state
|
|
* alpha test state (except for GLES 2.0)
|
|
*
|
|
* 2) then foreach layer:
|
|
* determine gl_target/gl_texture
|
|
* bind texture
|
|
* enable/disable target
|
|
* flush user matrix
|
|
*
|
|
* Note: After _cogl_material_flush_common_gl_state you can expect
|
|
* all state of the layers corresponding texture unit to be
|
|
* updated.
|
|
*/
|
|
_cogl_material_flush_common_gl_state (material,
|
|
materials_difference,
|
|
layer_differences,
|
|
skip_gl_color);
|
|
|
|
/* Now flush the fragment processing state according to the current
|
|
* fragment processing backend.
|
|
*
|
|
* Note: Some of the backends may not support the current material
|
|
* configuration and in that case it will report an error and we
|
|
* will fallback to a different backend.
|
|
*
|
|
* NB: if material->backend != COGL_MATERIAL_BACKEND_UNDEFINED then
|
|
* we have previously managed to successfully flush this material
|
|
* with the given backend so we will simply use that to avoid
|
|
* fallback code paths.
|
|
*/
|
|
|
|
if (material->backend == COGL_MATERIAL_BACKEND_UNDEFINED)
|
|
_cogl_material_set_backend (material, COGL_MATERIAL_BACKEND_DEFAULT);
|
|
|
|
for (i = material->backend;
|
|
i < G_N_ELEMENTS (backends);
|
|
i++, _cogl_material_set_backend (material, i))
|
|
{
|
|
const CoglMaterialBackend *backend = backends[i];
|
|
CoglMaterialBackendAddLayerState state;
|
|
|
|
/* E.g. For backends generating code they can setup their
|
|
* scratch buffers here... */
|
|
if (G_UNLIKELY (!backend->start (material,
|
|
n_layers,
|
|
materials_difference)))
|
|
continue;
|
|
|
|
state.backend = backend;
|
|
state.material = material;
|
|
state.layer_differences = layer_differences;
|
|
state.error_adding_layer = FALSE;
|
|
state.added_layer = FALSE;
|
|
_cogl_material_foreach_layer (material,
|
|
backend_add_layer_cb,
|
|
&state);
|
|
|
|
if (G_UNLIKELY (state.error_adding_layer))
|
|
continue;
|
|
|
|
if (!state.added_layer &&
|
|
backend->passthrough &&
|
|
G_UNLIKELY (!backend->passthrough (material)))
|
|
continue;
|
|
|
|
/* For backends generating code they may compile and link their
|
|
* programs here, update any uniforms and tell OpenGL to use
|
|
* that program.
|
|
*/
|
|
if (G_UNLIKELY (!backend->end (material, materials_difference)))
|
|
continue;
|
|
|
|
break;
|
|
}
|
|
|
|
/* FIXME: This reference is actually resulting in lots of
|
|
* copy-on-write reparenting because one-shot materials end up
|
|
* living for longer than necessary and so any later modification of
|
|
* the parent will cause a copy-on-write.
|
|
*
|
|
* XXX: The issue should largely go away when we switch to using
|
|
* weak materials for overrides.
|
|
*/
|
|
cogl_object_ref (material);
|
|
if (ctx->current_material != NULL)
|
|
cogl_object_unref (ctx->current_material);
|
|
ctx->current_material = material;
|
|
ctx->current_material_changes_since_flush = 0;
|
|
ctx->current_material_skip_gl_color = skip_gl_color;
|
|
|
|
/* Handle the fact that OpenGL associates texture filter and wrap
|
|
* modes with the texture objects not the texture units... */
|
|
foreach_texture_unit_update_filter_and_wrap_modes ();
|
|
|
|
/* If this material has more than one layer then we always need
|
|
* to make sure we rebind the texture for unit 1.
|
|
*
|
|
* NB: various components of Cogl may temporarily bind arbitrary
|
|
* textures to texture unit 1 so they can query and modify texture
|
|
* object parameters. cogl-material.c (See
|
|
* _cogl_bind_gl_texture_transient)
|
|
*/
|
|
unit1 = _cogl_get_texture_unit (1);
|
|
if (unit1->enabled && unit1->dirty_gl_texture)
|
|
{
|
|
_cogl_set_active_texture_unit (1);
|
|
GE (glBindTexture (unit1->current_gl_target, unit1->gl_texture));
|
|
unit1->dirty_gl_texture = FALSE;
|
|
}
|
|
|
|
COGL_TIMER_STOP (_cogl_uprof_context, material_flush_timer);
|
|
}
|
|
|
|
/* While a material is referenced by the Cogl journal we can not allow
|
|
* modifications, so this gives us a mechanism to track journal
|
|
* references separately */
|
|
CoglMaterial *
|
|
_cogl_material_journal_ref (CoglMaterial *material)
|
|
{
|
|
material->journal_ref_count++;
|
|
return cogl_object_ref (material);
|
|
}
|
|
|
|
void
|
|
_cogl_material_journal_unref (CoglMaterial *material)
|
|
{
|
|
material->journal_ref_count--;
|
|
cogl_object_unref (material);
|
|
}
|
|
|
|
void
|
|
_cogl_material_apply_legacy_state (CoglMaterial *material)
|
|
{
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
/* It was a mistake that we ever copied the OpenGL style API for
|
|
* associating these things directly with the context when we
|
|
* originally wrote Cogl. Until the corresponding deprecated APIs
|
|
* can be removed though we now shoehorn the state changes through
|
|
* the cogl_material API instead.
|
|
*/
|
|
|
|
if (ctx->current_program)
|
|
_cogl_material_set_user_program (material, ctx->current_program);
|
|
|
|
if (ctx->legacy_depth_test_enabled)
|
|
cogl_material_set_depth_test_enabled (material, TRUE);
|
|
|
|
if (ctx->legacy_fog_state.enabled)
|
|
_cogl_material_set_fog_state (material, &ctx->legacy_fog_state);
|
|
}
|
|
|
|
void
|
|
_cogl_material_set_static_breadcrumb (CoglMaterial *material,
|
|
const char *breadcrumb)
|
|
{
|
|
material->has_static_breadcrumb = TRUE;
|
|
material->static_breadcrumb = breadcrumb;
|
|
}
|
|
|
|
typedef struct
|
|
{
|
|
int parent_id;
|
|
int *node_id_ptr;
|
|
GString *graph;
|
|
int indent;
|
|
} PrintDebugState;
|
|
|
|
static gboolean
|
|
dump_layer_cb (CoglMaterialNode *node, void *user_data)
|
|
{
|
|
CoglMaterialLayer *layer = COGL_MATERIAL_LAYER (node);
|
|
PrintDebugState *state = user_data;
|
|
int layer_id = *state->node_id_ptr;
|
|
PrintDebugState state_out;
|
|
GString *changes_label;
|
|
gboolean changes = FALSE;
|
|
|
|
if (state->parent_id >= 0)
|
|
g_string_append_printf (state->graph, "%*slayer%d -> layer%d;\n",
|
|
state->indent, "",
|
|
state->parent_id,
|
|
layer_id);
|
|
|
|
g_string_append_printf (state->graph,
|
|
"%*slayer%d [label=\"layer=0x%p\\n"
|
|
"ref count=%d\" "
|
|
"color=\"blue\"];\n",
|
|
state->indent, "",
|
|
layer_id,
|
|
layer,
|
|
COGL_OBJECT (layer)->ref_count);
|
|
|
|
changes_label = g_string_new ("");
|
|
g_string_append_printf (changes_label,
|
|
"%*slayer%d -> layer_state%d [weight=100];\n"
|
|
"%*slayer_state%d [shape=box label=\"",
|
|
state->indent, "",
|
|
layer_id,
|
|
layer_id,
|
|
state->indent, "",
|
|
layer_id);
|
|
|
|
if (layer->differences & COGL_MATERIAL_LAYER_STATE_TEXTURE)
|
|
{
|
|
changes = TRUE;
|
|
g_string_append_printf (changes_label,
|
|
"\\ltexture=%p\\n",
|
|
layer->texture);
|
|
}
|
|
|
|
if (changes)
|
|
{
|
|
g_string_append_printf (changes_label, "\"];\n");
|
|
g_string_append (state->graph, changes_label->str);
|
|
g_string_free (changes_label, TRUE);
|
|
}
|
|
|
|
state_out.parent_id = layer_id;
|
|
|
|
state_out.node_id_ptr = state->node_id_ptr;
|
|
(*state_out.node_id_ptr)++;
|
|
|
|
state_out.graph = state->graph;
|
|
state_out.indent = state->indent + 2;
|
|
|
|
_cogl_material_node_foreach_child (COGL_MATERIAL_NODE (layer),
|
|
dump_layer_cb,
|
|
&state_out);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
dump_layer_ref_cb (CoglMaterialLayer *layer, void *data)
|
|
{
|
|
PrintDebugState *state = data;
|
|
int material_id = *state->node_id_ptr;
|
|
|
|
g_string_append_printf (state->graph,
|
|
"%*smaterial_state%d -> layer_ref%d [weight=200];\n",
|
|
state->indent, "",
|
|
material_id,
|
|
material_id);
|
|
g_string_append_printf (state->graph,
|
|
"%*slayer_ref%d [label=\"addr=0x%p\" "
|
|
"shape=box color=blue];\n",
|
|
state->indent, "",
|
|
material_id,
|
|
layer);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
dump_material_cb (CoglMaterialNode *node, void *user_data)
|
|
{
|
|
CoglMaterial *material = COGL_MATERIAL (node);
|
|
PrintDebugState *state = user_data;
|
|
int material_id = *state->node_id_ptr;
|
|
PrintDebugState state_out;
|
|
GString *changes_label;
|
|
gboolean changes = FALSE;
|
|
gboolean layers = FALSE;
|
|
|
|
if (state->parent_id >= 0)
|
|
g_string_append_printf (state->graph, "%*smaterial%d -> material%d;\n",
|
|
state->indent, "",
|
|
state->parent_id,
|
|
material_id);
|
|
|
|
g_string_append_printf (state->graph,
|
|
"%*smaterial%d [label=\"material=0x%p\\n"
|
|
"ref count=%d\\n"
|
|
"breadcrumb=\\\"%s\\\"\" color=\"red\"];\n",
|
|
state->indent, "",
|
|
material_id,
|
|
material,
|
|
COGL_OBJECT (material)->ref_count,
|
|
material->has_static_breadcrumb ?
|
|
material->static_breadcrumb : "NULL");
|
|
|
|
changes_label = g_string_new ("");
|
|
g_string_append_printf (changes_label,
|
|
"%*smaterial%d -> material_state%d [weight=100];\n"
|
|
"%*smaterial_state%d [shape=box label=\"",
|
|
state->indent, "",
|
|
material_id,
|
|
material_id,
|
|
state->indent, "",
|
|
material_id);
|
|
|
|
|
|
if (material->differences & COGL_MATERIAL_STATE_COLOR)
|
|
{
|
|
changes = TRUE;
|
|
g_string_append_printf (changes_label,
|
|
"\\lcolor=0x%02X%02X%02X%02X\\n",
|
|
cogl_color_get_red_byte (&material->color),
|
|
cogl_color_get_green_byte (&material->color),
|
|
cogl_color_get_blue_byte (&material->color),
|
|
cogl_color_get_alpha_byte (&material->color));
|
|
}
|
|
|
|
if (material->differences & COGL_MATERIAL_STATE_BLEND)
|
|
{
|
|
changes = TRUE;
|
|
const char *blend_enable_name;
|
|
switch (material->blend_enable)
|
|
{
|
|
case COGL_MATERIAL_BLEND_ENABLE_AUTOMATIC:
|
|
blend_enable_name = "AUTO";
|
|
break;
|
|
case COGL_MATERIAL_BLEND_ENABLE_ENABLED:
|
|
blend_enable_name = "ENABLED";
|
|
break;
|
|
case COGL_MATERIAL_BLEND_ENABLE_DISABLED:
|
|
blend_enable_name = "DISABLED";
|
|
break;
|
|
default:
|
|
blend_enable_name = "UNKNOWN";
|
|
}
|
|
g_string_append_printf (changes_label,
|
|
"\\lblend=%s\\n",
|
|
blend_enable_name);
|
|
}
|
|
|
|
if (material->differences & COGL_MATERIAL_STATE_LAYERS)
|
|
{
|
|
changes = TRUE;
|
|
layers = TRUE;
|
|
g_string_append_printf (changes_label, "\\ln_layers=%d\\n",
|
|
material->n_layers);
|
|
}
|
|
|
|
if (changes)
|
|
{
|
|
g_string_append_printf (changes_label, "\"];\n");
|
|
g_string_append (state->graph, changes_label->str);
|
|
g_string_free (changes_label, TRUE);
|
|
}
|
|
|
|
if (layers)
|
|
_cogl_material_foreach_layer (material, dump_layer_ref_cb, state);
|
|
|
|
state_out.parent_id = material_id;
|
|
|
|
state_out.node_id_ptr = state->node_id_ptr;
|
|
(*state_out.node_id_ptr)++;
|
|
|
|
state_out.graph = state->graph;
|
|
state_out.indent = state->indent + 2;
|
|
|
|
_cogl_material_node_foreach_child (COGL_MATERIAL_NODE (material),
|
|
dump_material_cb,
|
|
&state_out);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
_cogl_debug_dump_materials_dot_file (const char *filename)
|
|
{
|
|
GString *graph;
|
|
PrintDebugState layer_state;
|
|
PrintDebugState material_state;
|
|
int layer_id = 0;
|
|
int material_id = 0;
|
|
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
if (!ctx->default_material)
|
|
return;
|
|
|
|
graph = g_string_new ("");
|
|
g_string_append_printf (graph, "digraph {\n");
|
|
|
|
layer_state.graph = graph;
|
|
layer_state.parent_id = -1;
|
|
layer_state.node_id_ptr = &layer_id;
|
|
layer_state.indent = 0;
|
|
dump_layer_cb (ctx->default_layer_0, &layer_state);
|
|
|
|
material_state.graph = graph;
|
|
material_state.parent_id = -1;
|
|
material_state.node_id_ptr = &material_id;
|
|
material_state.indent = 0;
|
|
dump_material_cb (ctx->default_material, &material_state);
|
|
|
|
g_string_append_printf (graph, "}\n");
|
|
|
|
if (filename)
|
|
g_file_set_contents (filename, graph->str, -1, NULL);
|
|
else
|
|
g_print ("%s", graph->str);
|
|
|
|
g_string_free (graph, TRUE);
|
|
}
|
|
|