b1ecfbf720
As part of an on-going effort to be able to support non-opengl drivers for Cogl this splits out the opengl specific code from cogl-buffer.c into driver/gl/cogl-buffer-gl.c Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit 4d7094a979ff2cbbe4054f4a44ca05fc41a9e447)
413 lines
14 KiB
C
413 lines
14 KiB
C
/*
|
|
* Cogl
|
|
*
|
|
* An object oriented GL/GLES Abstraction/Utility Layer
|
|
*
|
|
* Copyright (C) 2010,2011,2012 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:
|
|
* Neil Roberts <neil@linux.intel.com>
|
|
* Robert Bragg <robert@linux.intel.com>
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <string.h>
|
|
|
|
#include "cogl-private.h"
|
|
#include "cogl-pipeline-opengl-private.h"
|
|
#include "cogl-error-private.h"
|
|
#include "cogl-context-private.h"
|
|
#include "cogl-attribute.h"
|
|
#include "cogl-attribute-private.h"
|
|
#include "cogl-attribute-gl-private.h"
|
|
#include "cogl-pipeline-progend-glsl-private.h"
|
|
#include "cogl-buffer-gl-private.h"
|
|
|
|
typedef struct _ForeachChangedBitState
|
|
{
|
|
CoglContext *context;
|
|
const CoglBitmask *new_bits;
|
|
CoglPipeline *pipeline;
|
|
} ForeachChangedBitState;
|
|
|
|
static CoglBool
|
|
toggle_builtin_attribute_enabled_cb (int bit_num, void *user_data)
|
|
{
|
|
ForeachChangedBitState *state = user_data;
|
|
CoglContext *context = state->context;
|
|
|
|
_COGL_RETURN_VAL_IF_FAIL (context->driver == COGL_DRIVER_GL ||
|
|
context->driver == COGL_DRIVER_GLES1,
|
|
FALSE);
|
|
|
|
#if defined (HAVE_COGL_GL) || defined (HAVE_COGL_GLES)
|
|
{
|
|
CoglBool enabled = _cogl_bitmask_get (state->new_bits, bit_num);
|
|
GLenum cap;
|
|
|
|
switch (bit_num)
|
|
{
|
|
case COGL_ATTRIBUTE_NAME_ID_COLOR_ARRAY:
|
|
cap = GL_COLOR_ARRAY;
|
|
break;
|
|
case COGL_ATTRIBUTE_NAME_ID_POSITION_ARRAY:
|
|
cap = GL_VERTEX_ARRAY;
|
|
break;
|
|
case COGL_ATTRIBUTE_NAME_ID_NORMAL_ARRAY:
|
|
cap = GL_NORMAL_ARRAY;
|
|
break;
|
|
}
|
|
if (enabled)
|
|
GE (context, glEnableClientState (cap));
|
|
else
|
|
GE (context, glDisableClientState (cap));
|
|
}
|
|
#endif
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static CoglBool
|
|
toggle_texcood_attribute_enabled_cb (int bit_num, void *user_data)
|
|
{
|
|
ForeachChangedBitState *state = user_data;
|
|
CoglContext *context = state->context;
|
|
|
|
_COGL_RETURN_VAL_IF_FAIL (context->driver == COGL_DRIVER_GL ||
|
|
context->driver == COGL_DRIVER_GLES1,
|
|
FALSE);
|
|
|
|
#if defined (HAVE_COGL_GL) || defined (HAVE_COGL_GLES)
|
|
{
|
|
CoglBool enabled = _cogl_bitmask_get (state->new_bits, bit_num);
|
|
|
|
GE( context, glClientActiveTexture (GL_TEXTURE0 + bit_num) );
|
|
|
|
if (enabled)
|
|
GE( context, glEnableClientState (GL_TEXTURE_COORD_ARRAY) );
|
|
else
|
|
GE( context, glDisableClientState (GL_TEXTURE_COORD_ARRAY) );
|
|
}
|
|
#endif
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static CoglBool
|
|
toggle_custom_attribute_enabled_cb (int bit_num, void *user_data)
|
|
{
|
|
ForeachChangedBitState *state = user_data;
|
|
CoglBool enabled = _cogl_bitmask_get (state->new_bits, bit_num);
|
|
CoglContext *context = state->context;
|
|
|
|
if (enabled)
|
|
GE( context, glEnableVertexAttribArray (bit_num) );
|
|
else
|
|
GE( context, glDisableVertexAttribArray (bit_num) );
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
foreach_changed_bit_and_save (CoglContext *context,
|
|
CoglBitmask *current_bits,
|
|
const CoglBitmask *new_bits,
|
|
CoglBitmaskForeachFunc callback,
|
|
ForeachChangedBitState *state)
|
|
{
|
|
/* Get the list of bits that are different */
|
|
_cogl_bitmask_clear_all (&context->changed_bits_tmp);
|
|
_cogl_bitmask_set_bits (&context->changed_bits_tmp, current_bits);
|
|
_cogl_bitmask_xor_bits (&context->changed_bits_tmp, new_bits);
|
|
|
|
/* Iterate over each bit to change */
|
|
state->new_bits = new_bits;
|
|
_cogl_bitmask_foreach (&context->changed_bits_tmp,
|
|
callback,
|
|
state);
|
|
|
|
/* Store the new values */
|
|
_cogl_bitmask_clear_all (current_bits);
|
|
_cogl_bitmask_set_bits (current_bits, new_bits);
|
|
}
|
|
|
|
#ifdef COGL_PIPELINE_PROGEND_GLSL
|
|
|
|
static void
|
|
setup_generic_attribute (CoglContext *context,
|
|
CoglPipeline *pipeline,
|
|
CoglAttribute *attribute,
|
|
uint8_t *base)
|
|
{
|
|
int name_index = attribute->name_state->name_index;
|
|
int attrib_location =
|
|
_cogl_pipeline_progend_glsl_get_attrib_location (pipeline, name_index);
|
|
if (attrib_location != -1)
|
|
{
|
|
GE( context, glVertexAttribPointer (attrib_location,
|
|
attribute->n_components,
|
|
attribute->type,
|
|
attribute->normalized,
|
|
attribute->stride,
|
|
base + attribute->offset) );
|
|
_cogl_bitmask_set (&context->enable_custom_attributes_tmp,
|
|
attrib_location, TRUE);
|
|
}
|
|
}
|
|
|
|
#endif /* COGL_PIPELINE_PROGEND_GLSL */
|
|
|
|
static void
|
|
apply_attribute_enable_updates (CoglContext *context,
|
|
CoglPipeline *pipeline)
|
|
{
|
|
ForeachChangedBitState changed_bits_state;
|
|
|
|
changed_bits_state.context = context;
|
|
changed_bits_state.new_bits = &context->enable_builtin_attributes_tmp;
|
|
changed_bits_state.pipeline = pipeline;
|
|
|
|
foreach_changed_bit_and_save (context,
|
|
&context->enabled_builtin_attributes,
|
|
&context->enable_builtin_attributes_tmp,
|
|
toggle_builtin_attribute_enabled_cb,
|
|
&changed_bits_state);
|
|
|
|
changed_bits_state.new_bits = &context->enable_texcoord_attributes_tmp;
|
|
foreach_changed_bit_and_save (context,
|
|
&context->enabled_texcoord_attributes,
|
|
&context->enable_texcoord_attributes_tmp,
|
|
toggle_texcood_attribute_enabled_cb,
|
|
&changed_bits_state);
|
|
|
|
changed_bits_state.new_bits = &context->enable_custom_attributes_tmp;
|
|
foreach_changed_bit_and_save (context,
|
|
&context->enabled_custom_attributes,
|
|
&context->enable_custom_attributes_tmp,
|
|
toggle_custom_attribute_enabled_cb,
|
|
&changed_bits_state);
|
|
}
|
|
|
|
void
|
|
_cogl_gl_flush_attributes_state (CoglFramebuffer *framebuffer,
|
|
CoglPipeline *pipeline,
|
|
CoglFlushLayerState *layers_state,
|
|
CoglDrawFlags flags,
|
|
CoglAttribute **attributes,
|
|
int n_attributes)
|
|
{
|
|
CoglContext *ctx = framebuffer->context;
|
|
int i;
|
|
CoglBool skip_gl_color = FALSE;
|
|
CoglPipeline *copy = NULL;
|
|
int n_tex_coord_attribs = 0;
|
|
|
|
/* Iterate the attributes to work out whether blending needs to be
|
|
enabled and how many texture coords there are. We need to do this
|
|
before flushing the pipeline. */
|
|
for (i = 0; i < n_attributes; i++)
|
|
switch (attributes[i]->name_state->name_id)
|
|
{
|
|
case COGL_ATTRIBUTE_NAME_ID_COLOR_ARRAY:
|
|
if ((flags & COGL_DRAW_COLOR_ATTRIBUTE_IS_OPAQUE) == 0 &&
|
|
!_cogl_pipeline_get_real_blend_enabled (pipeline))
|
|
{
|
|
CoglPipelineBlendEnable blend_enable =
|
|
COGL_PIPELINE_BLEND_ENABLE_ENABLED;
|
|
copy = cogl_pipeline_copy (pipeline);
|
|
_cogl_pipeline_set_blend_enabled (copy, blend_enable);
|
|
pipeline = copy;
|
|
}
|
|
skip_gl_color = TRUE;
|
|
break;
|
|
|
|
case COGL_ATTRIBUTE_NAME_ID_TEXTURE_COORD_ARRAY:
|
|
n_tex_coord_attribs++;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (G_UNLIKELY (layers_state->options.flags))
|
|
{
|
|
/* If we haven't already created a derived pipeline... */
|
|
if (!copy)
|
|
{
|
|
copy = cogl_pipeline_copy (pipeline);
|
|
pipeline = copy;
|
|
}
|
|
_cogl_pipeline_apply_overrides (pipeline, &layers_state->options);
|
|
|
|
/* TODO:
|
|
* overrides = cogl_pipeline_get_data (pipeline,
|
|
* last_overrides_key);
|
|
* if (overrides)
|
|
* {
|
|
* age = cogl_pipeline_get_age (pipeline);
|
|
* XXX: actually we also need to check for legacy_state
|
|
* and blending overrides for use of glColorPointer...
|
|
* if (overrides->ags != age ||
|
|
* memcmp (&overrides->options, &options,
|
|
* sizeof (options) != 0)
|
|
* {
|
|
* cogl_object_unref (overrides->weak_pipeline);
|
|
* g_slice_free (Overrides, overrides);
|
|
* overrides = NULL;
|
|
* }
|
|
* }
|
|
* if (!overrides)
|
|
* {
|
|
* overrides = g_slice_new (Overrides);
|
|
* overrides->weak_pipeline =
|
|
* cogl_pipeline_weak_copy (pipeline);
|
|
* _cogl_pipeline_apply_overrides (overrides->weak_pipeline,
|
|
* &options);
|
|
*
|
|
* cogl_pipeline_set_data (pipeline, last_overrides_key,
|
|
* weak_overrides,
|
|
* free_overrides_cb,
|
|
* NULL);
|
|
* }
|
|
* pipeline = overrides->weak_pipeline;
|
|
*/
|
|
}
|
|
|
|
_cogl_pipeline_flush_gl_state (pipeline,
|
|
framebuffer,
|
|
skip_gl_color,
|
|
n_tex_coord_attribs);
|
|
|
|
_cogl_bitmask_clear_all (&ctx->enable_builtin_attributes_tmp);
|
|
_cogl_bitmask_clear_all (&ctx->enable_texcoord_attributes_tmp);
|
|
_cogl_bitmask_clear_all (&ctx->enable_custom_attributes_tmp);
|
|
|
|
/* Bind the attribute pointers. We need to do this after the
|
|
* pipeline is flushed because when using GLSL that is the only
|
|
* point when we can determine the attribute locations */
|
|
|
|
for (i = 0; i < n_attributes; i++)
|
|
{
|
|
CoglAttribute *attribute = attributes[i];
|
|
CoglAttributeBuffer *attribute_buffer;
|
|
CoglBuffer *buffer;
|
|
uint8_t *base;
|
|
|
|
attribute_buffer = cogl_attribute_get_buffer (attribute);
|
|
buffer = COGL_BUFFER (attribute_buffer);
|
|
base = _cogl_buffer_gl_bind (buffer, COGL_BUFFER_BIND_TARGET_ATTRIBUTE_BUFFER);
|
|
|
|
switch (attribute->name_state->name_id)
|
|
{
|
|
case COGL_ATTRIBUTE_NAME_ID_COLOR_ARRAY:
|
|
#ifdef HAVE_COGL_GLES2
|
|
if (ctx->driver == COGL_DRIVER_GLES2)
|
|
setup_generic_attribute (ctx, pipeline, attribute, base);
|
|
else
|
|
#endif
|
|
{
|
|
_cogl_bitmask_set (&ctx->enable_builtin_attributes_tmp,
|
|
COGL_ATTRIBUTE_NAME_ID_COLOR_ARRAY, TRUE);
|
|
GE (ctx, glColorPointer (attribute->n_components,
|
|
attribute->type,
|
|
attribute->stride,
|
|
base + attribute->offset));
|
|
}
|
|
break;
|
|
case COGL_ATTRIBUTE_NAME_ID_NORMAL_ARRAY:
|
|
#ifdef HAVE_COGL_GLES2
|
|
if (ctx->driver == COGL_DRIVER_GLES2)
|
|
setup_generic_attribute (ctx, pipeline, attribute, base);
|
|
else
|
|
#endif
|
|
{
|
|
_cogl_bitmask_set (&ctx->enable_builtin_attributes_tmp,
|
|
COGL_ATTRIBUTE_NAME_ID_NORMAL_ARRAY, TRUE);
|
|
GE (ctx, glNormalPointer (attribute->type,
|
|
attribute->stride,
|
|
base + attribute->offset));
|
|
}
|
|
break;
|
|
case COGL_ATTRIBUTE_NAME_ID_TEXTURE_COORD_ARRAY:
|
|
#ifdef HAVE_COGL_GLES2
|
|
if (ctx->driver == COGL_DRIVER_GLES2)
|
|
setup_generic_attribute (ctx, pipeline, attribute, base);
|
|
else
|
|
#endif
|
|
{
|
|
_cogl_bitmask_set (&ctx->enable_texcoord_attributes_tmp,
|
|
attribute->name_state->texture_unit, TRUE);
|
|
GE (ctx,
|
|
glClientActiveTexture (GL_TEXTURE0 +
|
|
attribute->name_state->texture_unit));
|
|
GE (ctx, glTexCoordPointer (attribute->n_components,
|
|
attribute->type,
|
|
attribute->stride,
|
|
base + attribute->offset));
|
|
}
|
|
break;
|
|
case COGL_ATTRIBUTE_NAME_ID_POSITION_ARRAY:
|
|
#ifdef HAVE_COGL_GLES2
|
|
if (ctx->driver == COGL_DRIVER_GLES2)
|
|
setup_generic_attribute (ctx, pipeline, attribute, base);
|
|
else
|
|
#endif
|
|
{
|
|
_cogl_bitmask_set (&ctx->enable_builtin_attributes_tmp,
|
|
COGL_ATTRIBUTE_NAME_ID_POSITION_ARRAY, TRUE);
|
|
GE (ctx, glVertexPointer (attribute->n_components,
|
|
attribute->type,
|
|
attribute->stride,
|
|
base + attribute->offset));
|
|
}
|
|
break;
|
|
case COGL_ATTRIBUTE_NAME_ID_CUSTOM_ARRAY:
|
|
#ifdef COGL_PIPELINE_PROGEND_GLSL
|
|
if (ctx->driver != COGL_DRIVER_GLES1)
|
|
setup_generic_attribute (ctx, pipeline, attribute, base);
|
|
#endif
|
|
break;
|
|
default:
|
|
g_warning ("Unrecognised attribute type 0x%08x", attribute->type);
|
|
}
|
|
|
|
_cogl_buffer_gl_unbind (buffer);
|
|
}
|
|
|
|
apply_attribute_enable_updates (ctx, pipeline);
|
|
|
|
if (copy)
|
|
cogl_object_unref (copy);
|
|
}
|
|
|
|
void
|
|
_cogl_gl_disable_all_attributes (CoglContext *ctx)
|
|
{
|
|
_cogl_bitmask_clear_all (&ctx->enable_builtin_attributes_tmp);
|
|
_cogl_bitmask_clear_all (&ctx->enable_texcoord_attributes_tmp);
|
|
_cogl_bitmask_clear_all (&ctx->enable_custom_attributes_tmp);
|
|
|
|
/* XXX: we can pass a NULL source pipeline here because we know a
|
|
* source pipeline only needs to be referenced when enabling
|
|
* attributes. */
|
|
apply_attribute_enable_updates (ctx, NULL);
|
|
}
|