mirror of
https://github.com/brl/mutter.git
synced 2024-11-26 01:50:42 -05:00
c5644723f8
Previously the private feature flags were stored in an enum and we already had 31 flags. Adding the 32nd flag would presumably make it add -2³¹ as one of the values which might cause problems. To avoid this we'll just use an fixed-size array of longs and use indices for the enum values like we do for the public features. A slight complication with this is in the CoglDriverDescription where we were previously using a static intialised value to describe the set of features that the driver supports. We can't easily do this with the flags array so instead the features are stored in a fixed-size array of indices. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit d94cb984e3c93630f3c2e6e3be9d189672aa20f3) Conflicts: cogl/cogl-context-private.h cogl/cogl-context.c cogl/cogl-private.h cogl/cogl-renderer.c cogl/driver/gl/cogl-pipeline-opengl.c cogl/driver/gl/gl/cogl-driver-gl.c cogl/driver/gl/gl/cogl-pipeline-progend-fixed-arbfp.c cogl/driver/gl/gles/cogl-driver-gles.c cogl/driver/nop/cogl-driver-nop.c
533 lines
18 KiB
C
533 lines
18 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-util-gl-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 (_cogl_has_private_feature
|
|
(context, COGL_PRIVATE_FEATURE_GL_FIXED),
|
|
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 (_cogl_has_private_feature
|
|
(context, COGL_PRIVATE_FEATURE_GL_FIXED),
|
|
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_buffered_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)
|
|
return;
|
|
|
|
GE( context, glVertexAttribPointer (attrib_location,
|
|
attribute->d.buffered.n_components,
|
|
attribute->d.buffered.type,
|
|
attribute->normalized,
|
|
attribute->d.buffered.stride,
|
|
base + attribute->d.buffered.offset) );
|
|
_cogl_bitmask_set (&context->enable_custom_attributes_tmp,
|
|
attrib_location, TRUE);
|
|
}
|
|
|
|
static void
|
|
setup_generic_const_attribute (CoglContext *context,
|
|
CoglPipeline *pipeline,
|
|
CoglAttribute *attribute)
|
|
{
|
|
int name_index = attribute->name_state->name_index;
|
|
int attrib_location =
|
|
_cogl_pipeline_progend_glsl_get_attrib_location (pipeline, name_index);
|
|
int columns;
|
|
int i;
|
|
|
|
if (attrib_location == -1)
|
|
return;
|
|
|
|
if (attribute->d.constant.boxed.type == COGL_BOXED_MATRIX)
|
|
columns = attribute->d.constant.boxed.size;
|
|
else
|
|
columns = 1;
|
|
|
|
/* Note: it's ok to access a COGL_BOXED_FLOAT as a matrix with only
|
|
* one column... */
|
|
|
|
switch (attribute->d.constant.boxed.size)
|
|
{
|
|
case 1:
|
|
GE( context, glVertexAttrib1fv (attrib_location,
|
|
attribute->d.constant.boxed.v.matrix));
|
|
break;
|
|
case 2:
|
|
for (i = 0; i < columns; i++)
|
|
GE( context, glVertexAttrib2fv (attrib_location + i,
|
|
attribute->d.constant.boxed.v.matrix));
|
|
break;
|
|
case 3:
|
|
for (i = 0; i < columns; i++)
|
|
GE( context, glVertexAttrib3fv (attrib_location + i,
|
|
attribute->d.constant.boxed.v.matrix));
|
|
break;
|
|
case 4:
|
|
for (i = 0; i < columns; i++)
|
|
GE( context, glVertexAttrib4fv (attrib_location + i,
|
|
attribute->d.constant.boxed.v.matrix));
|
|
break;
|
|
default:
|
|
g_warn_if_reached ();
|
|
}
|
|
}
|
|
|
|
#endif /* COGL_PIPELINE_PROGEND_GLSL */
|
|
|
|
static void
|
|
setup_legacy_buffered_attribute (CoglContext *ctx,
|
|
CoglPipeline *pipeline,
|
|
CoglAttribute *attribute,
|
|
uint8_t *base)
|
|
{
|
|
switch (attribute->name_state->name_id)
|
|
{
|
|
case COGL_ATTRIBUTE_NAME_ID_COLOR_ARRAY:
|
|
_cogl_bitmask_set (&ctx->enable_builtin_attributes_tmp,
|
|
COGL_ATTRIBUTE_NAME_ID_COLOR_ARRAY, TRUE);
|
|
GE (ctx, glColorPointer (attribute->d.buffered.n_components,
|
|
attribute->d.buffered.type,
|
|
attribute->d.buffered.stride,
|
|
base + attribute->d.buffered.offset));
|
|
break;
|
|
case COGL_ATTRIBUTE_NAME_ID_NORMAL_ARRAY:
|
|
_cogl_bitmask_set (&ctx->enable_builtin_attributes_tmp,
|
|
COGL_ATTRIBUTE_NAME_ID_NORMAL_ARRAY, TRUE);
|
|
GE (ctx, glNormalPointer (attribute->d.buffered.type,
|
|
attribute->d.buffered.stride,
|
|
base + attribute->d.buffered.offset));
|
|
break;
|
|
case COGL_ATTRIBUTE_NAME_ID_TEXTURE_COORD_ARRAY:
|
|
{
|
|
int layer_number = attribute->name_state->layer_number;
|
|
const CoglPipelineGetLayerFlags flags =
|
|
COGL_PIPELINE_GET_LAYER_NO_CREATE;
|
|
CoglPipelineLayer *layer =
|
|
_cogl_pipeline_get_layer_with_flags (pipeline, layer_number, flags);
|
|
|
|
if (layer)
|
|
{
|
|
int unit = _cogl_pipeline_layer_get_unit_index (layer);
|
|
|
|
_cogl_bitmask_set (&ctx->enable_texcoord_attributes_tmp,
|
|
unit,
|
|
TRUE);
|
|
|
|
GE (ctx, glClientActiveTexture (GL_TEXTURE0 + unit));
|
|
GE (ctx, glTexCoordPointer (attribute->d.buffered.n_components,
|
|
attribute->d.buffered.type,
|
|
attribute->d.buffered.stride,
|
|
base + attribute->d.buffered.offset));
|
|
}
|
|
break;
|
|
}
|
|
case COGL_ATTRIBUTE_NAME_ID_POSITION_ARRAY:
|
|
_cogl_bitmask_set (&ctx->enable_builtin_attributes_tmp,
|
|
COGL_ATTRIBUTE_NAME_ID_POSITION_ARRAY, TRUE);
|
|
GE (ctx, glVertexPointer (attribute->d.buffered.n_components,
|
|
attribute->d.buffered.type,
|
|
attribute->d.buffered.stride,
|
|
base + attribute->d.buffered.offset));
|
|
break;
|
|
case COGL_ATTRIBUTE_NAME_ID_CUSTOM_ARRAY:
|
|
#ifdef COGL_PIPELINE_PROGEND_GLSL
|
|
if (_cogl_has_private_feature (ctx, COGL_PRIVATE_FEATURE_GL_PROGRAMMABLE))
|
|
setup_generic_buffered_attribute (ctx, pipeline, attribute, base);
|
|
#endif
|
|
break;
|
|
default:
|
|
g_warn_if_reached ();
|
|
}
|
|
}
|
|
|
|
static void
|
|
setup_legacy_const_attribute (CoglContext *ctx,
|
|
CoglPipeline *pipeline,
|
|
CoglAttribute *attribute)
|
|
{
|
|
#ifdef COGL_PIPELINE_PROGEND_GLSL
|
|
if (attribute->name_state->name_id == COGL_ATTRIBUTE_NAME_ID_CUSTOM_ARRAY)
|
|
{
|
|
if (_cogl_has_private_feature (ctx, COGL_PRIVATE_FEATURE_GL_PROGRAMMABLE))
|
|
setup_generic_const_attribute (ctx, pipeline, attribute);
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
float vector[4] = { 0, 0, 0, 1 };
|
|
float *boxed = attribute->d.constant.boxed.v.float_value;
|
|
int n_components = attribute->d.constant.boxed.size;
|
|
int i;
|
|
|
|
for (i = 0; i < n_components; i++)
|
|
vector[i] = boxed[i];
|
|
|
|
switch (attribute->name_state->name_id)
|
|
{
|
|
case COGL_ATTRIBUTE_NAME_ID_COLOR_ARRAY:
|
|
GE (ctx, glColor4f (vector[0], vector[1], vector[2], vector[3]));
|
|
break;
|
|
case COGL_ATTRIBUTE_NAME_ID_NORMAL_ARRAY:
|
|
GE (ctx, glNormal3f (vector[0], vector[1], vector[2]));
|
|
break;
|
|
case COGL_ATTRIBUTE_NAME_ID_TEXTURE_COORD_ARRAY:
|
|
{
|
|
int layer_number = attribute->name_state->layer_number;
|
|
const CoglPipelineGetLayerFlags flags =
|
|
COGL_PIPELINE_GET_LAYER_NO_CREATE;
|
|
CoglPipelineLayer *layer =
|
|
_cogl_pipeline_get_layer_with_flags (pipeline,
|
|
layer_number,
|
|
flags);
|
|
|
|
if (layer)
|
|
{
|
|
int unit = _cogl_pipeline_layer_get_unit_index (layer);
|
|
|
|
GE (ctx, glClientActiveTexture (GL_TEXTURE0 + unit));
|
|
|
|
GE (ctx, glMultiTexCoord4f (vector[0],
|
|
vector[1],
|
|
vector[2],
|
|
vector[3]));
|
|
}
|
|
break;
|
|
}
|
|
case COGL_ATTRIBUTE_NAME_ID_POSITION_ARRAY:
|
|
GE (ctx, glVertex4f (vector[0], vector[1], vector[2], vector[3]));
|
|
break;
|
|
default:
|
|
g_warn_if_reached ();
|
|
}
|
|
}
|
|
}
|
|
|
|
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 with_color_attrib = FALSE;
|
|
CoglBool unknown_color_alpha = FALSE;
|
|
CoglPipeline *copy = NULL;
|
|
|
|
/* Iterate the attributes to see if we have a color attribute which
|
|
* may affect our decision to enable blending or not.
|
|
*
|
|
* 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_attribute_get_n_components (attributes[i]) == 4)
|
|
unknown_color_alpha = TRUE;
|
|
with_color_attrib = TRUE;
|
|
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 (ctx,
|
|
pipeline,
|
|
framebuffer,
|
|
with_color_attrib,
|
|
unknown_color_alpha);
|
|
|
|
_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;
|
|
|
|
if (attribute->is_buffered)
|
|
{
|
|
attribute_buffer = cogl_attribute_get_buffer (attribute);
|
|
buffer = COGL_BUFFER (attribute_buffer);
|
|
|
|
/* Note: we don't try and catch errors with binding buffers
|
|
* here since OOM errors at this point indicate that nothing
|
|
* has yet been uploaded to attribute buffer which we
|
|
* consider to be a programmer error.
|
|
*/
|
|
base =
|
|
_cogl_buffer_gl_bind (buffer,
|
|
COGL_BUFFER_BIND_TARGET_ATTRIBUTE_BUFFER,
|
|
NULL);
|
|
|
|
if (pipeline->progend == COGL_PIPELINE_PROGEND_GLSL)
|
|
setup_generic_buffered_attribute (ctx, pipeline, attribute, base);
|
|
else
|
|
setup_legacy_buffered_attribute (ctx, pipeline, attribute, base);
|
|
|
|
_cogl_buffer_gl_unbind (buffer);
|
|
}
|
|
else
|
|
{
|
|
if (pipeline->progend == COGL_PIPELINE_PROGEND_GLSL)
|
|
setup_generic_const_attribute (ctx, pipeline, attribute);
|
|
else
|
|
setup_legacy_const_attribute (ctx, pipeline, attribute);
|
|
}
|
|
}
|
|
|
|
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);
|
|
}
|