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mutter/cogl/cogl-pipeline-progend-glsl.c

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cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 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:
* Neil Roberts <neil@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl-pipeline-private.h"
#include "cogl-pipeline-opengl-private.h"
#ifdef COGL_PIPELINE_PROGEND_GLSL
#include "cogl.h"
#include "cogl-internal.h"
cogl: rename cogl-context.h cogl-context-private.h Since we plan to add public cogl_context_* API we need to rename the current cogl-context.h which contains private member details.
2010-11-04 22:25:52 +00:00
#include "cogl-context-private.h"
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
#include "cogl-handle.h"
#include "cogl-program-private.h"
#include "cogl-pipeline-fragend-glsl-private.h"
cogl: Add a vertend to generate GLSL The GLSL vertend is mostly only useful for GLES2. The fixed function vertend is kept at higher priority than the GLSL vertend so it is unlikely to be used in any other circumstances.
2010-12-02 20:48:45 +00:00
#include "cogl-pipeline-vertend-glsl-private.h"
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
#ifdef HAVE_COGL_GLES2
cogl-pipeline-progend-glsl: Generalize updating GLES2 uniforms The uniforms for the alpha test reference value and point size on GLES2 are updating using similar code. This generalizes the code so that there is a static array of predefined builtin uniforms which contains the uniform name, a pointer to a function to get the value from the pipeline, a pointer to a function to update the uniform and a flag representing which CoglPipelineState change affects the uniform. The uniforms are then updated in a loop. This should simplify adding more builtin uniforms.
2011-01-13 18:24:22 +00:00
/* These are used to generalise updating some uniforms that are
required when building for GLES2 */
typedef void (* UpdateUniformFunc) (CoglPipeline *pipeline,
int uniform_location,
void *getter_func);
static void update_float_uniform (CoglPipeline *pipeline,
int uniform_location,
void *getter_func);
typedef struct
{
const char *uniform_name;
void *getter_func;
UpdateUniformFunc update_func;
CoglPipelineState change;
} BuiltinUniformData;
static BuiltinUniformData builtin_uniforms[] =
{
{ "cogl_point_size_in",
cogl_pipeline_get_point_size, update_float_uniform,
COGL_PIPELINE_STATE_POINT_SIZE },
{ "_cogl_alpha_test_ref",
cogl_pipeline_get_alpha_test_reference, update_float_uniform,
COGL_PIPELINE_STATE_ALPHA_FUNC_REFERENCE }
};
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
#endif /* HAVE_COGL_GLES2 */
const CoglPipelineProgend _cogl_pipeline_glsl_progend;
typedef struct _UnitState
{
unsigned int dirty_combine_constant:1;
cogl: upload matrices with uniforms on GLES2 Once the GLES2 wrapper is removed we won't be able to upload the matrices with the fixed function API any more. The fixed function API gives a global state for setting the matrix but if a custom shader uniform is used for the matrices then the state is per program. _cogl_matrix_stack_flush_to_gl is called in a few places and it is assumed the current pipeline doesn't need to be flushed before it is called. To allow these semantics to continue to work, on GLES2 the matrix flush now just stores a reference to the matrix stack in the CoglContext. A pre_paint virtual is added to the progend which is called whenever a pipeline is flushed, even if the same pipeline was flushed already. This gives the GLSL progend a chance to upload the matrices to the uniforms. The combined modelview/projection matrix is only calculated if it is used. The generated programs end up never using the modelview or projection matrix so it usually only has to upload the combined matrix. When a matrix stack is flushed a reference is taked to it by the pipeline progend and the age is stored so that if the same state is used with the same program again then we don't need to reupload the uniform.
2010-12-06 12:31:51 +00:00
unsigned int dirty_texture_matrix:1;
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
GLint combine_constant_uniform;
cogl: upload matrices with uniforms on GLES2 Once the GLES2 wrapper is removed we won't be able to upload the matrices with the fixed function API any more. The fixed function API gives a global state for setting the matrix but if a custom shader uniform is used for the matrices then the state is per program. _cogl_matrix_stack_flush_to_gl is called in a few places and it is assumed the current pipeline doesn't need to be flushed before it is called. To allow these semantics to continue to work, on GLES2 the matrix flush now just stores a reference to the matrix stack in the CoglContext. A pre_paint virtual is added to the progend which is called whenever a pipeline is flushed, even if the same pipeline was flushed already. This gives the GLSL progend a chance to upload the matrices to the uniforms. The combined modelview/projection matrix is only calculated if it is used. The generated programs end up never using the modelview or projection matrix so it usually only has to upload the combined matrix. When a matrix stack is flushed a reference is taked to it by the pipeline progend and the age is stored so that if the same state is used with the same program again then we don't need to reupload the uniform.
2010-12-06 12:31:51 +00:00
GLint texture_matrix_uniform;
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
} UnitState;
typedef struct
{
unsigned int ref_count;
/* Age that the user program had last time we generated a GL
program. If it's different then we need to relink the program */
unsigned int user_program_age;
GLuint program;
/* To allow writing shaders that are portable between GLES 2 and
* OpenGL Cogl prepends a number of boilerplate #defines and
* declarations to user shaders. One of those declarations is an
* array of texture coordinate varyings, but to know how to emit the
* declaration we need to know how many texture coordinate
* attributes are in use. The boilerplate also needs to be changed
* if this increases. */
int n_tex_coord_attribs;
#ifdef HAVE_COGL_GLES2
cogl-pipeline-progend-glsl: Generalize updating GLES2 uniforms The uniforms for the alpha test reference value and point size on GLES2 are updating using similar code. This generalizes the code so that there is a static array of predefined builtin uniforms which contains the uniform name, a pointer to a function to get the value from the pipeline, a pointer to a function to update the uniform and a flag representing which CoglPipelineState change affects the uniform. The uniforms are then updated in a loop. This should simplify adding more builtin uniforms.
2011-01-13 18:24:22 +00:00
unsigned long dirty_builtin_uniforms;
GLint builtin_uniform_locations[G_N_ELEMENTS (builtin_uniforms)];
cogl-vertex-attribute: Use glVertexAttribPointer on GLES2 When the GLES2 wrapper is removed we can't use the fixed function API such as glColorPointer to set the builtin attributes. Instead the GLSL progend now maintains a cache of attribute locations that are queried with glGetAttribLocation. The code that previously maintained a cache of the enabled texture coord arrays has been modified to also cache the enabled vertex attributes under GLES2. The vertex attribute API is now the only place that is using this cache so it has been moved into cogl-vertex-attribute.c
2010-12-03 17:46:16 +00:00
/* Under GLES2 we can't use the builtin functions to set attribute
pointers such as the vertex position. Instead the vertex
attribute code needs to query the attribute numbers from the
progend backend */
int position_attribute_location;
int color_attribute_location;
int normal_attribute_location;
int tex_coord0_attribute_location;
/* We only allocate this array if more than one tex coord attribute
is requested because most pipelines will only use one layer */
GArray *tex_coord_attribute_locations;
cogl: upload matrices with uniforms on GLES2 Once the GLES2 wrapper is removed we won't be able to upload the matrices with the fixed function API any more. The fixed function API gives a global state for setting the matrix but if a custom shader uniform is used for the matrices then the state is per program. _cogl_matrix_stack_flush_to_gl is called in a few places and it is assumed the current pipeline doesn't need to be flushed before it is called. To allow these semantics to continue to work, on GLES2 the matrix flush now just stores a reference to the matrix stack in the CoglContext. A pre_paint virtual is added to the progend which is called whenever a pipeline is flushed, even if the same pipeline was flushed already. This gives the GLSL progend a chance to upload the matrices to the uniforms. The combined modelview/projection matrix is only calculated if it is used. The generated programs end up never using the modelview or projection matrix so it usually only has to upload the combined matrix. When a matrix stack is flushed a reference is taked to it by the pipeline progend and the age is stored so that if the same state is used with the same program again then we don't need to reupload the uniform.
2010-12-06 12:31:51 +00:00
GLint modelview_uniform;
GLint projection_uniform;
GLint mvp_uniform;
CoglMatrixStack *flushed_modelview_stack;
unsigned int flushed_modelview_stack_age;
gboolean flushed_modelview_is_identity;
CoglMatrixStack *flushed_projection_stack;
unsigned int flushed_projection_stack_age;
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
#endif
/* We need to track the last pipeline that the program was used with
* so know if we need to update all of the uniforms */
CoglPipeline *last_used_for_pipeline;
UnitState *unit_state;
} CoglPipelineProgendPrivate;
static CoglUserDataKey glsl_priv_key;
static CoglPipelineProgendPrivate *
get_glsl_priv (CoglPipeline *pipeline)
{
return cogl_object_get_user_data (COGL_OBJECT (pipeline), &glsl_priv_key);
}
cogl-vertex-attribute: Use glVertexAttribPointer on GLES2 When the GLES2 wrapper is removed we can't use the fixed function API such as glColorPointer to set the builtin attributes. Instead the GLSL progend now maintains a cache of attribute locations that are queried with glGetAttribLocation. The code that previously maintained a cache of the enabled texture coord arrays has been modified to also cache the enabled vertex attributes under GLES2. The vertex attribute API is now the only place that is using this cache so it has been moved into cogl-vertex-attribute.c
2010-12-03 17:46:16 +00:00
#ifdef HAVE_COGL_GLES2
#define ATTRIBUTE_LOCATION_UNKNOWN -2
/* Under GLES2 the vertex attribute API needs to query the attribute
numbers because it can't used the fixed function API to set the
builtin attributes. We cache the attributes here because the
progend knows when the program is changed so it can clear the
cache. This should always be called after the pipeline is flushed
so they can assert that the gl program is valid */
int
_cogl_pipeline_progend_glsl_get_position_attribute (CoglPipeline *pipeline)
{
CoglPipelineProgendPrivate *priv = get_glsl_priv (pipeline);
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
_COGL_GET_CONTEXT (ctx, -1);
cogl-vertex-attribute: Use glVertexAttribPointer on GLES2 When the GLES2 wrapper is removed we can't use the fixed function API such as glColorPointer to set the builtin attributes. Instead the GLSL progend now maintains a cache of attribute locations that are queried with glGetAttribLocation. The code that previously maintained a cache of the enabled texture coord arrays has been modified to also cache the enabled vertex attributes under GLES2. The vertex attribute API is now the only place that is using this cache so it has been moved into cogl-vertex-attribute.c
2010-12-03 17:46:16 +00:00
g_return_val_if_fail (priv != NULL, -1);
g_return_val_if_fail (priv->program != 0, -1);
if (priv->position_attribute_location == ATTRIBUTE_LOCATION_UNKNOWN)
GE_RET( priv->position_attribute_location,
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
ctx, glGetAttribLocation (priv->program, "cogl_position_in") );
cogl-vertex-attribute: Use glVertexAttribPointer on GLES2 When the GLES2 wrapper is removed we can't use the fixed function API such as glColorPointer to set the builtin attributes. Instead the GLSL progend now maintains a cache of attribute locations that are queried with glGetAttribLocation. The code that previously maintained a cache of the enabled texture coord arrays has been modified to also cache the enabled vertex attributes under GLES2. The vertex attribute API is now the only place that is using this cache so it has been moved into cogl-vertex-attribute.c
2010-12-03 17:46:16 +00:00
return priv->position_attribute_location;
}
int
_cogl_pipeline_progend_glsl_get_color_attribute (CoglPipeline *pipeline)
{
CoglPipelineProgendPrivate *priv = get_glsl_priv (pipeline);
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
_COGL_GET_CONTEXT (ctx, -1);
cogl-vertex-attribute: Use glVertexAttribPointer on GLES2 When the GLES2 wrapper is removed we can't use the fixed function API such as glColorPointer to set the builtin attributes. Instead the GLSL progend now maintains a cache of attribute locations that are queried with glGetAttribLocation. The code that previously maintained a cache of the enabled texture coord arrays has been modified to also cache the enabled vertex attributes under GLES2. The vertex attribute API is now the only place that is using this cache so it has been moved into cogl-vertex-attribute.c
2010-12-03 17:46:16 +00:00
g_return_val_if_fail (priv != NULL, -1);
g_return_val_if_fail (priv->program != 0, -1);
if (priv->color_attribute_location == ATTRIBUTE_LOCATION_UNKNOWN)
GE_RET( priv->color_attribute_location,
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
ctx, glGetAttribLocation (priv->program, "cogl_color_in") );
cogl-vertex-attribute: Use glVertexAttribPointer on GLES2 When the GLES2 wrapper is removed we can't use the fixed function API such as glColorPointer to set the builtin attributes. Instead the GLSL progend now maintains a cache of attribute locations that are queried with glGetAttribLocation. The code that previously maintained a cache of the enabled texture coord arrays has been modified to also cache the enabled vertex attributes under GLES2. The vertex attribute API is now the only place that is using this cache so it has been moved into cogl-vertex-attribute.c
2010-12-03 17:46:16 +00:00
return priv->color_attribute_location;
}
int
_cogl_pipeline_progend_glsl_get_normal_attribute (CoglPipeline *pipeline)
{
CoglPipelineProgendPrivate *priv = get_glsl_priv (pipeline);
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
_COGL_GET_CONTEXT (ctx, -1);
cogl-vertex-attribute: Use glVertexAttribPointer on GLES2 When the GLES2 wrapper is removed we can't use the fixed function API such as glColorPointer to set the builtin attributes. Instead the GLSL progend now maintains a cache of attribute locations that are queried with glGetAttribLocation. The code that previously maintained a cache of the enabled texture coord arrays has been modified to also cache the enabled vertex attributes under GLES2. The vertex attribute API is now the only place that is using this cache so it has been moved into cogl-vertex-attribute.c
2010-12-03 17:46:16 +00:00
g_return_val_if_fail (priv != NULL, -1);
g_return_val_if_fail (priv->program != 0, -1);
if (priv->normal_attribute_location == ATTRIBUTE_LOCATION_UNKNOWN)
GE_RET( priv->normal_attribute_location,
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
ctx, glGetAttribLocation (priv->program, "cogl_normal_in") );
cogl-vertex-attribute: Use glVertexAttribPointer on GLES2 When the GLES2 wrapper is removed we can't use the fixed function API such as glColorPointer to set the builtin attributes. Instead the GLSL progend now maintains a cache of attribute locations that are queried with glGetAttribLocation. The code that previously maintained a cache of the enabled texture coord arrays has been modified to also cache the enabled vertex attributes under GLES2. The vertex attribute API is now the only place that is using this cache so it has been moved into cogl-vertex-attribute.c
2010-12-03 17:46:16 +00:00
return priv->normal_attribute_location;
}
int
_cogl_pipeline_progend_glsl_get_tex_coord_attribute (CoglPipeline *pipeline,
int unit)
{
CoglPipelineProgendPrivate *priv = get_glsl_priv (pipeline);
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
_COGL_GET_CONTEXT (ctx, -1);
cogl-vertex-attribute: Use glVertexAttribPointer on GLES2 When the GLES2 wrapper is removed we can't use the fixed function API such as glColorPointer to set the builtin attributes. Instead the GLSL progend now maintains a cache of attribute locations that are queried with glGetAttribLocation. The code that previously maintained a cache of the enabled texture coord arrays has been modified to also cache the enabled vertex attributes under GLES2. The vertex attribute API is now the only place that is using this cache so it has been moved into cogl-vertex-attribute.c
2010-12-03 17:46:16 +00:00
g_return_val_if_fail (priv != NULL, -1);
g_return_val_if_fail (priv->program != 0, -1);
if (unit == 0)
{
if (priv->tex_coord0_attribute_location == ATTRIBUTE_LOCATION_UNKNOWN)
GE_RET( priv->tex_coord0_attribute_location,
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
ctx, glGetAttribLocation (priv->program,
"cogl_tex_coord0_in") );
cogl-vertex-attribute: Use glVertexAttribPointer on GLES2 When the GLES2 wrapper is removed we can't use the fixed function API such as glColorPointer to set the builtin attributes. Instead the GLSL progend now maintains a cache of attribute locations that are queried with glGetAttribLocation. The code that previously maintained a cache of the enabled texture coord arrays has been modified to also cache the enabled vertex attributes under GLES2. The vertex attribute API is now the only place that is using this cache so it has been moved into cogl-vertex-attribute.c
2010-12-03 17:46:16 +00:00
return priv->tex_coord0_attribute_location;
}
else
{
char *name = g_strdup_printf ("cogl_tex_coord%i_in", unit);
int *locations;
if (priv->tex_coord_attribute_locations == NULL)
priv->tex_coord_attribute_locations = g_array_new (FALSE, FALSE,
sizeof (int));
if (priv->tex_coord_attribute_locations->len <= unit - 1)
{
int i = priv->tex_coord_attribute_locations->len;
g_array_set_size (priv->tex_coord_attribute_locations, unit);
for (; i < unit; i++)
g_array_index (priv->tex_coord_attribute_locations, int, i) =
ATTRIBUTE_LOCATION_UNKNOWN;
}
locations = &g_array_index (priv->tex_coord_attribute_locations, int, 0);
if (locations[unit - 1] == ATTRIBUTE_LOCATION_UNKNOWN)
GE_RET( locations[unit - 1],
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
ctx, glGetAttribLocation (priv->program, name) );
cogl-vertex-attribute: Use glVertexAttribPointer on GLES2 When the GLES2 wrapper is removed we can't use the fixed function API such as glColorPointer to set the builtin attributes. Instead the GLSL progend now maintains a cache of attribute locations that are queried with glGetAttribLocation. The code that previously maintained a cache of the enabled texture coord arrays has been modified to also cache the enabled vertex attributes under GLES2. The vertex attribute API is now the only place that is using this cache so it has been moved into cogl-vertex-attribute.c
2010-12-03 17:46:16 +00:00
g_free (name);
return locations[unit - 1];
}
}
static void
clear_attribute_cache (CoglPipelineProgendPrivate *priv)
{
priv->position_attribute_location = ATTRIBUTE_LOCATION_UNKNOWN;
priv->color_attribute_location = ATTRIBUTE_LOCATION_UNKNOWN;
priv->normal_attribute_location = ATTRIBUTE_LOCATION_UNKNOWN;
priv->tex_coord0_attribute_location = ATTRIBUTE_LOCATION_UNKNOWN;
if (priv->tex_coord_attribute_locations)
{
g_array_free (priv->tex_coord_attribute_locations, TRUE);
priv->tex_coord_attribute_locations = NULL;
}
}
cogl: upload matrices with uniforms on GLES2 Once the GLES2 wrapper is removed we won't be able to upload the matrices with the fixed function API any more. The fixed function API gives a global state for setting the matrix but if a custom shader uniform is used for the matrices then the state is per program. _cogl_matrix_stack_flush_to_gl is called in a few places and it is assumed the current pipeline doesn't need to be flushed before it is called. To allow these semantics to continue to work, on GLES2 the matrix flush now just stores a reference to the matrix stack in the CoglContext. A pre_paint virtual is added to the progend which is called whenever a pipeline is flushed, even if the same pipeline was flushed already. This gives the GLSL progend a chance to upload the matrices to the uniforms. The combined modelview/projection matrix is only calculated if it is used. The generated programs end up never using the modelview or projection matrix so it usually only has to upload the combined matrix. When a matrix stack is flushed a reference is taked to it by the pipeline progend and the age is stored so that if the same state is used with the same program again then we don't need to reupload the uniform.
2010-12-06 12:31:51 +00:00
static void
clear_flushed_matrix_stacks (CoglPipelineProgendPrivate *priv)
{
if (priv->flushed_modelview_stack)
{
cogl_object_unref (priv->flushed_modelview_stack);
priv->flushed_modelview_stack = NULL;
}
if (priv->flushed_projection_stack)
{
cogl_object_unref (priv->flushed_projection_stack);
priv->flushed_projection_stack = NULL;
}
priv->flushed_modelview_is_identity = FALSE;
}
cogl-vertex-attribute: Use glVertexAttribPointer on GLES2 When the GLES2 wrapper is removed we can't use the fixed function API such as glColorPointer to set the builtin attributes. Instead the GLSL progend now maintains a cache of attribute locations that are queried with glGetAttribLocation. The code that previously maintained a cache of the enabled texture coord arrays has been modified to also cache the enabled vertex attributes under GLES2. The vertex attribute API is now the only place that is using this cache so it has been moved into cogl-vertex-attribute.c
2010-12-03 17:46:16 +00:00
#endif /* HAVE_COGL_GLES2 */
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
static void
destroy_glsl_priv (void *user_data)
{
CoglPipelineProgendPrivate *priv = user_data;
Remove the GLES2 wrapper The GLES2 wrapper is no longer needed because the shader generation is done within the GLSL fragend and vertend and any functions that are different for GLES2 are now guarded by #ifdefs.
2010-12-05 18:02:05 +00:00
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
if (--priv->ref_count == 0)
{
cogl-vertex-attribute: Use glVertexAttribPointer on GLES2 When the GLES2 wrapper is removed we can't use the fixed function API such as glColorPointer to set the builtin attributes. Instead the GLSL progend now maintains a cache of attribute locations that are queried with glGetAttribLocation. The code that previously maintained a cache of the enabled texture coord arrays has been modified to also cache the enabled vertex attributes under GLES2. The vertex attribute API is now the only place that is using this cache so it has been moved into cogl-vertex-attribute.c
2010-12-03 17:46:16 +00:00
#ifdef HAVE_COGL_GLES2
Dynamically load the GL or GLES library The GL or GLES library is now dynamically loaded by the CoglRenderer so that it can choose between GL, GLES1 and GLES2 at runtime. The library is loaded by the renderer because it needs to be done before calling eglInitialize. There is a new environment variable called COGL_DRIVER to choose between gl, gles1 or gles2. The #ifdefs for HAVE_COGL_GL, HAVE_COGL_GLES and HAVE_COGL_GLES2 have been changed so that they don't assume the ifdefs are mutually exclusive. They haven't been removed entirely so that it's possible to compile the GLES backends without the the enums from the GL headers. When using GLX the winsys additionally dynamically loads libGL because that also contains the GLX API. It can't be linked in directly because that would probably conflict with the GLES API if the EGL is selected. When compiling with EGL support the library links directly to libEGL because it doesn't contain any GL API so it shouldn't have any conflicts. When building for WGL or OSX Cogl still directly links against the GL API so there is a #define in config.h so that Cogl won't try to dlopen the library. Cogl-pango previously had a #ifdef to detect when the GL backend is used so that it can sneakily pass GL_QUADS to cogl_vertex_buffer_draw. This is now changed so that it queries the CoglContext for the backend. However to get this to work Cogl now needs to export the _cogl_context_get_default symbol and cogl-pango needs some extra -I flags to so that it can include cogl-context-private.h
2011-07-07 19:44:56 +00:00
if (ctx->driver == COGL_DRIVER_GLES2)
{
clear_attribute_cache (priv);
clear_flushed_matrix_stacks (priv);
}
cogl-vertex-attribute: Use glVertexAttribPointer on GLES2 When the GLES2 wrapper is removed we can't use the fixed function API such as glColorPointer to set the builtin attributes. Instead the GLSL progend now maintains a cache of attribute locations that are queried with glGetAttribLocation. The code that previously maintained a cache of the enabled texture coord arrays has been modified to also cache the enabled vertex attributes under GLES2. The vertex attribute API is now the only place that is using this cache so it has been moved into cogl-vertex-attribute.c
2010-12-03 17:46:16 +00:00
#endif
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
if (priv->program)
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
GE( ctx, glDeleteProgram (priv->program) );
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
g_free (priv->unit_state);
g_slice_free (CoglPipelineProgendPrivate, priv);
}
}
static void
set_glsl_priv (CoglPipeline *pipeline, CoglPipelineProgendPrivate *priv)
{
cogl_object_set_user_data (COGL_OBJECT (pipeline),
&glsl_priv_key,
priv,
destroy_glsl_priv);
}
static void
dirty_glsl_program_state (CoglPipeline *pipeline)
{
cogl_object_set_user_data (COGL_OBJECT (pipeline),
&glsl_priv_key,
NULL,
destroy_glsl_priv);
}
static void
link_program (GLint gl_program)
{
GLint link_status;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
GE( ctx, glLinkProgram (gl_program) );
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
GE( ctx, glGetProgramiv (gl_program, GL_LINK_STATUS, &link_status) );
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
if (!link_status)
{
GLint log_length;
GLsizei out_log_length;
char *log;
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
GE( ctx, glGetProgramiv (gl_program, GL_INFO_LOG_LENGTH, &log_length) );
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
log = g_malloc (log_length);
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
GE( ctx, glGetProgramInfoLog (gl_program, log_length,
&out_log_length, log) );
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
g_warning ("Failed to link GLSL program:\n%.*s\n",
log_length, log);
g_free (log);
}
}
typedef struct
{
int unit;
GLuint gl_program;
gboolean update_all;
CoglPipelineProgendPrivate *priv;
} UpdateUniformsState;
static gboolean
get_uniform_cb (CoglPipeline *pipeline,
int layer_index,
void *user_data)
{
UpdateUniformsState *state = user_data;
CoglPipelineProgendPrivate *priv = state->priv;
UnitState *unit_state = &priv->unit_state[state->unit];
GLint uniform_location;
_COGL_GET_CONTEXT (ctx, FALSE);
/* We can reuse the source buffer to create the uniform name because
the program has now been linked */
cogl-pipeline: Rename the fragment_{source,header}_buffer to codegen We want to reuse the same buffers for vertends so calling them fragment_* doesn't make sense.
2010-12-02 18:05:22 +00:00
g_string_set_size (ctx->codegen_source_buffer, 0);
g_string_append_printf (ctx->codegen_source_buffer,
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
"_cogl_sampler_%i", state->unit);
GE_RET( uniform_location,
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
ctx, glGetUniformLocation (state->gl_program,
ctx->codegen_source_buffer->str) );
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
/* We can set the uniform immediately because the samplers are the
unit index not the texture object number so it will never
change. Unfortunately GL won't let us use a constant instead of a
uniform */
if (uniform_location != -1)
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
GE( ctx, glUniform1i (uniform_location, state->unit) );
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
cogl-pipeline: Rename the fragment_{source,header}_buffer to codegen We want to reuse the same buffers for vertends so calling them fragment_* doesn't make sense.
2010-12-02 18:05:22 +00:00
g_string_set_size (ctx->codegen_source_buffer, 0);
g_string_append_printf (ctx->codegen_source_buffer,
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
"_cogl_layer_constant_%i", state->unit);
GE_RET( uniform_location,
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
ctx, glGetUniformLocation (state->gl_program,
ctx->codegen_source_buffer->str) );
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
unit_state->combine_constant_uniform = uniform_location;
cogl: upload matrices with uniforms on GLES2 Once the GLES2 wrapper is removed we won't be able to upload the matrices with the fixed function API any more. The fixed function API gives a global state for setting the matrix but if a custom shader uniform is used for the matrices then the state is per program. _cogl_matrix_stack_flush_to_gl is called in a few places and it is assumed the current pipeline doesn't need to be flushed before it is called. To allow these semantics to continue to work, on GLES2 the matrix flush now just stores a reference to the matrix stack in the CoglContext. A pre_paint virtual is added to the progend which is called whenever a pipeline is flushed, even if the same pipeline was flushed already. This gives the GLSL progend a chance to upload the matrices to the uniforms. The combined modelview/projection matrix is only calculated if it is used. The generated programs end up never using the modelview or projection matrix so it usually only has to upload the combined matrix. When a matrix stack is flushed a reference is taked to it by the pipeline progend and the age is stored so that if the same state is used with the same program again then we don't need to reupload the uniform.
2010-12-06 12:31:51 +00:00
#ifdef HAVE_COGL_GLES2
Dynamically load the GL or GLES library The GL or GLES library is now dynamically loaded by the CoglRenderer so that it can choose between GL, GLES1 and GLES2 at runtime. The library is loaded by the renderer because it needs to be done before calling eglInitialize. There is a new environment variable called COGL_DRIVER to choose between gl, gles1 or gles2. The #ifdefs for HAVE_COGL_GL, HAVE_COGL_GLES and HAVE_COGL_GLES2 have been changed so that they don't assume the ifdefs are mutually exclusive. They haven't been removed entirely so that it's possible to compile the GLES backends without the the enums from the GL headers. When using GLX the winsys additionally dynamically loads libGL because that also contains the GLX API. It can't be linked in directly because that would probably conflict with the GLES API if the EGL is selected. When compiling with EGL support the library links directly to libEGL because it doesn't contain any GL API so it shouldn't have any conflicts. When building for WGL or OSX Cogl still directly links against the GL API so there is a #define in config.h so that Cogl won't try to dlopen the library. Cogl-pango previously had a #ifdef to detect when the GL backend is used so that it can sneakily pass GL_QUADS to cogl_vertex_buffer_draw. This is now changed so that it queries the CoglContext for the backend. However to get this to work Cogl now needs to export the _cogl_context_get_default symbol and cogl-pango needs some extra -I flags to so that it can include cogl-context-private.h
2011-07-07 19:44:56 +00:00
if (ctx->driver == COGL_DRIVER_GLES2)
{
g_string_set_size (ctx->codegen_source_buffer, 0);
g_string_append_printf (ctx->codegen_source_buffer,
"cogl_texture_matrix[%i]", state->unit);
cogl: upload matrices with uniforms on GLES2 Once the GLES2 wrapper is removed we won't be able to upload the matrices with the fixed function API any more. The fixed function API gives a global state for setting the matrix but if a custom shader uniform is used for the matrices then the state is per program. _cogl_matrix_stack_flush_to_gl is called in a few places and it is assumed the current pipeline doesn't need to be flushed before it is called. To allow these semantics to continue to work, on GLES2 the matrix flush now just stores a reference to the matrix stack in the CoglContext. A pre_paint virtual is added to the progend which is called whenever a pipeline is flushed, even if the same pipeline was flushed already. This gives the GLSL progend a chance to upload the matrices to the uniforms. The combined modelview/projection matrix is only calculated if it is used. The generated programs end up never using the modelview or projection matrix so it usually only has to upload the combined matrix. When a matrix stack is flushed a reference is taked to it by the pipeline progend and the age is stored so that if the same state is used with the same program again then we don't need to reupload the uniform.
2010-12-06 12:31:51 +00:00
Dynamically load the GL or GLES library The GL or GLES library is now dynamically loaded by the CoglRenderer so that it can choose between GL, GLES1 and GLES2 at runtime. The library is loaded by the renderer because it needs to be done before calling eglInitialize. There is a new environment variable called COGL_DRIVER to choose between gl, gles1 or gles2. The #ifdefs for HAVE_COGL_GL, HAVE_COGL_GLES and HAVE_COGL_GLES2 have been changed so that they don't assume the ifdefs are mutually exclusive. They haven't been removed entirely so that it's possible to compile the GLES backends without the the enums from the GL headers. When using GLX the winsys additionally dynamically loads libGL because that also contains the GLX API. It can't be linked in directly because that would probably conflict with the GLES API if the EGL is selected. When compiling with EGL support the library links directly to libEGL because it doesn't contain any GL API so it shouldn't have any conflicts. When building for WGL or OSX Cogl still directly links against the GL API so there is a #define in config.h so that Cogl won't try to dlopen the library. Cogl-pango previously had a #ifdef to detect when the GL backend is used so that it can sneakily pass GL_QUADS to cogl_vertex_buffer_draw. This is now changed so that it queries the CoglContext for the backend. However to get this to work Cogl now needs to export the _cogl_context_get_default symbol and cogl-pango needs some extra -I flags to so that it can include cogl-context-private.h
2011-07-07 19:44:56 +00:00
GE_RET( uniform_location,
ctx, glGetUniformLocation (state->gl_program,
ctx->codegen_source_buffer->str) );
cogl: upload matrices with uniforms on GLES2 Once the GLES2 wrapper is removed we won't be able to upload the matrices with the fixed function API any more. The fixed function API gives a global state for setting the matrix but if a custom shader uniform is used for the matrices then the state is per program. _cogl_matrix_stack_flush_to_gl is called in a few places and it is assumed the current pipeline doesn't need to be flushed before it is called. To allow these semantics to continue to work, on GLES2 the matrix flush now just stores a reference to the matrix stack in the CoglContext. A pre_paint virtual is added to the progend which is called whenever a pipeline is flushed, even if the same pipeline was flushed already. This gives the GLSL progend a chance to upload the matrices to the uniforms. The combined modelview/projection matrix is only calculated if it is used. The generated programs end up never using the modelview or projection matrix so it usually only has to upload the combined matrix. When a matrix stack is flushed a reference is taked to it by the pipeline progend and the age is stored so that if the same state is used with the same program again then we don't need to reupload the uniform.
2010-12-06 12:31:51 +00:00
Dynamically load the GL or GLES library The GL or GLES library is now dynamically loaded by the CoglRenderer so that it can choose between GL, GLES1 and GLES2 at runtime. The library is loaded by the renderer because it needs to be done before calling eglInitialize. There is a new environment variable called COGL_DRIVER to choose between gl, gles1 or gles2. The #ifdefs for HAVE_COGL_GL, HAVE_COGL_GLES and HAVE_COGL_GLES2 have been changed so that they don't assume the ifdefs are mutually exclusive. They haven't been removed entirely so that it's possible to compile the GLES backends without the the enums from the GL headers. When using GLX the winsys additionally dynamically loads libGL because that also contains the GLX API. It can't be linked in directly because that would probably conflict with the GLES API if the EGL is selected. When compiling with EGL support the library links directly to libEGL because it doesn't contain any GL API so it shouldn't have any conflicts. When building for WGL or OSX Cogl still directly links against the GL API so there is a #define in config.h so that Cogl won't try to dlopen the library. Cogl-pango previously had a #ifdef to detect when the GL backend is used so that it can sneakily pass GL_QUADS to cogl_vertex_buffer_draw. This is now changed so that it queries the CoglContext for the backend. However to get this to work Cogl now needs to export the _cogl_context_get_default symbol and cogl-pango needs some extra -I flags to so that it can include cogl-context-private.h
2011-07-07 19:44:56 +00:00
unit_state->texture_matrix_uniform = uniform_location;
}
cogl: upload matrices with uniforms on GLES2 Once the GLES2 wrapper is removed we won't be able to upload the matrices with the fixed function API any more. The fixed function API gives a global state for setting the matrix but if a custom shader uniform is used for the matrices then the state is per program. _cogl_matrix_stack_flush_to_gl is called in a few places and it is assumed the current pipeline doesn't need to be flushed before it is called. To allow these semantics to continue to work, on GLES2 the matrix flush now just stores a reference to the matrix stack in the CoglContext. A pre_paint virtual is added to the progend which is called whenever a pipeline is flushed, even if the same pipeline was flushed already. This gives the GLSL progend a chance to upload the matrices to the uniforms. The combined modelview/projection matrix is only calculated if it is used. The generated programs end up never using the modelview or projection matrix so it usually only has to upload the combined matrix. When a matrix stack is flushed a reference is taked to it by the pipeline progend and the age is stored so that if the same state is used with the same program again then we don't need to reupload the uniform.
2010-12-06 12:31:51 +00:00
#endif
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
state->unit++;
return TRUE;
}
static gboolean
update_constants_cb (CoglPipeline *pipeline,
int layer_index,
void *user_data)
{
UpdateUniformsState *state = user_data;
CoglPipelineProgendPrivate *priv = state->priv;
UnitState *unit_state = &priv->unit_state[state->unit++];
_COGL_GET_CONTEXT (ctx, FALSE);
if (unit_state->combine_constant_uniform != -1 &&
(state->update_all || unit_state->dirty_combine_constant))
{
float constant[4];
_cogl_pipeline_get_layer_combine_constant (pipeline,
layer_index,
constant);
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
GE (ctx, glUniform4fv (unit_state->combine_constant_uniform,
1, constant));
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
unit_state->dirty_combine_constant = FALSE;
}
cogl: upload matrices with uniforms on GLES2 Once the GLES2 wrapper is removed we won't be able to upload the matrices with the fixed function API any more. The fixed function API gives a global state for setting the matrix but if a custom shader uniform is used for the matrices then the state is per program. _cogl_matrix_stack_flush_to_gl is called in a few places and it is assumed the current pipeline doesn't need to be flushed before it is called. To allow these semantics to continue to work, on GLES2 the matrix flush now just stores a reference to the matrix stack in the CoglContext. A pre_paint virtual is added to the progend which is called whenever a pipeline is flushed, even if the same pipeline was flushed already. This gives the GLSL progend a chance to upload the matrices to the uniforms. The combined modelview/projection matrix is only calculated if it is used. The generated programs end up never using the modelview or projection matrix so it usually only has to upload the combined matrix. When a matrix stack is flushed a reference is taked to it by the pipeline progend and the age is stored so that if the same state is used with the same program again then we don't need to reupload the uniform.
2010-12-06 12:31:51 +00:00
#ifdef HAVE_COGL_GLES2
Dynamically load the GL or GLES library The GL or GLES library is now dynamically loaded by the CoglRenderer so that it can choose between GL, GLES1 and GLES2 at runtime. The library is loaded by the renderer because it needs to be done before calling eglInitialize. There is a new environment variable called COGL_DRIVER to choose between gl, gles1 or gles2. The #ifdefs for HAVE_COGL_GL, HAVE_COGL_GLES and HAVE_COGL_GLES2 have been changed so that they don't assume the ifdefs are mutually exclusive. They haven't been removed entirely so that it's possible to compile the GLES backends without the the enums from the GL headers. When using GLX the winsys additionally dynamically loads libGL because that also contains the GLX API. It can't be linked in directly because that would probably conflict with the GLES API if the EGL is selected. When compiling with EGL support the library links directly to libEGL because it doesn't contain any GL API so it shouldn't have any conflicts. When building for WGL or OSX Cogl still directly links against the GL API so there is a #define in config.h so that Cogl won't try to dlopen the library. Cogl-pango previously had a #ifdef to detect when the GL backend is used so that it can sneakily pass GL_QUADS to cogl_vertex_buffer_draw. This is now changed so that it queries the CoglContext for the backend. However to get this to work Cogl now needs to export the _cogl_context_get_default symbol and cogl-pango needs some extra -I flags to so that it can include cogl-context-private.h
2011-07-07 19:44:56 +00:00
if (ctx->driver == COGL_DRIVER_GLES2 &&
unit_state->texture_matrix_uniform != -1 &&
cogl: upload matrices with uniforms on GLES2 Once the GLES2 wrapper is removed we won't be able to upload the matrices with the fixed function API any more. The fixed function API gives a global state for setting the matrix but if a custom shader uniform is used for the matrices then the state is per program. _cogl_matrix_stack_flush_to_gl is called in a few places and it is assumed the current pipeline doesn't need to be flushed before it is called. To allow these semantics to continue to work, on GLES2 the matrix flush now just stores a reference to the matrix stack in the CoglContext. A pre_paint virtual is added to the progend which is called whenever a pipeline is flushed, even if the same pipeline was flushed already. This gives the GLSL progend a chance to upload the matrices to the uniforms. The combined modelview/projection matrix is only calculated if it is used. The generated programs end up never using the modelview or projection matrix so it usually only has to upload the combined matrix. When a matrix stack is flushed a reference is taked to it by the pipeline progend and the age is stored so that if the same state is used with the same program again then we don't need to reupload the uniform.
2010-12-06 12:31:51 +00:00
(state->update_all || unit_state->dirty_texture_matrix))
{
const CoglMatrix *matrix;
const float *array;
matrix = _cogl_pipeline_get_layer_matrix (pipeline, layer_index);
array = cogl_matrix_get_array (matrix);
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
GE (ctx, glUniformMatrix4fv (unit_state->texture_matrix_uniform,
1, FALSE, array));
cogl: upload matrices with uniforms on GLES2 Once the GLES2 wrapper is removed we won't be able to upload the matrices with the fixed function API any more. The fixed function API gives a global state for setting the matrix but if a custom shader uniform is used for the matrices then the state is per program. _cogl_matrix_stack_flush_to_gl is called in a few places and it is assumed the current pipeline doesn't need to be flushed before it is called. To allow these semantics to continue to work, on GLES2 the matrix flush now just stores a reference to the matrix stack in the CoglContext. A pre_paint virtual is added to the progend which is called whenever a pipeline is flushed, even if the same pipeline was flushed already. This gives the GLSL progend a chance to upload the matrices to the uniforms. The combined modelview/projection matrix is only calculated if it is used. The generated programs end up never using the modelview or projection matrix so it usually only has to upload the combined matrix. When a matrix stack is flushed a reference is taked to it by the pipeline progend and the age is stored so that if the same state is used with the same program again then we don't need to reupload the uniform.
2010-12-06 12:31:51 +00:00
unit_state->dirty_texture_matrix = FALSE;
}
#endif /* HAVE_COGL_GLES2 */
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
return TRUE;
}
#ifdef HAVE_COGL_GLES2
static void
cogl-pipeline-progend-glsl: Generalize updating GLES2 uniforms The uniforms for the alpha test reference value and point size on GLES2 are updating using similar code. This generalizes the code so that there is a static array of predefined builtin uniforms which contains the uniform name, a pointer to a function to get the value from the pipeline, a pointer to a function to update the uniform and a flag representing which CoglPipelineState change affects the uniform. The uniforms are then updated in a loop. This should simplify adding more builtin uniforms.
2011-01-13 18:24:22 +00:00
update_builtin_uniforms (CoglPipeline *pipeline,
GLuint gl_program,
CoglPipelineProgendPrivate *priv)
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
{
cogl-pipeline-progend-glsl: Generalize updating GLES2 uniforms The uniforms for the alpha test reference value and point size on GLES2 are updating using similar code. This generalizes the code so that there is a static array of predefined builtin uniforms which contains the uniform name, a pointer to a function to get the value from the pipeline, a pointer to a function to update the uniform and a flag representing which CoglPipelineState change affects the uniform. The uniforms are then updated in a loop. This should simplify adding more builtin uniforms.
2011-01-13 18:24:22 +00:00
int i;
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
cogl-pipeline-progend-glsl: Generalize updating GLES2 uniforms The uniforms for the alpha test reference value and point size on GLES2 are updating using similar code. This generalizes the code so that there is a static array of predefined builtin uniforms which contains the uniform name, a pointer to a function to get the value from the pipeline, a pointer to a function to update the uniform and a flag representing which CoglPipelineState change affects the uniform. The uniforms are then updated in a loop. This should simplify adding more builtin uniforms.
2011-01-13 18:24:22 +00:00
if (priv->dirty_builtin_uniforms == 0)
return;
cogl: Add a vertend to generate GLSL The GLSL vertend is mostly only useful for GLES2. The fixed function vertend is kept at higher priority than the GLSL vertend so it is unlikely to be used in any other circumstances.
2010-12-02 20:48:45 +00:00
cogl-pipeline-progend-glsl: Generalize updating GLES2 uniforms The uniforms for the alpha test reference value and point size on GLES2 are updating using similar code. This generalizes the code so that there is a static array of predefined builtin uniforms which contains the uniform name, a pointer to a function to get the value from the pipeline, a pointer to a function to update the uniform and a flag representing which CoglPipelineState change affects the uniform. The uniforms are then updated in a loop. This should simplify adding more builtin uniforms.
2011-01-13 18:24:22 +00:00
for (i = 0; i < G_N_ELEMENTS (builtin_uniforms); i++)
if ((priv->dirty_builtin_uniforms & (1 << i)) &&
priv->builtin_uniform_locations[i] != -1)
builtin_uniforms[i].update_func (pipeline,
priv->builtin_uniform_locations[i],
builtin_uniforms[i].getter_func);
cogl: Add a vertend to generate GLSL The GLSL vertend is mostly only useful for GLES2. The fixed function vertend is kept at higher priority than the GLSL vertend so it is unlikely to be used in any other circumstances.
2010-12-02 20:48:45 +00:00
cogl-pipeline-progend-glsl: Generalize updating GLES2 uniforms The uniforms for the alpha test reference value and point size on GLES2 are updating using similar code. This generalizes the code so that there is a static array of predefined builtin uniforms which contains the uniform name, a pointer to a function to get the value from the pipeline, a pointer to a function to update the uniform and a flag representing which CoglPipelineState change affects the uniform. The uniforms are then updated in a loop. This should simplify adding more builtin uniforms.
2011-01-13 18:24:22 +00:00
priv->dirty_builtin_uniforms = 0;
cogl: Add a vertend to generate GLSL The GLSL vertend is mostly only useful for GLES2. The fixed function vertend is kept at higher priority than the GLSL vertend so it is unlikely to be used in any other circumstances.
2010-12-02 20:48:45 +00:00
}
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
#endif /* HAVE_COGL_GLES2 */
static void
_cogl_pipeline_progend_glsl_end (CoglPipeline *pipeline,
unsigned long pipelines_difference,
int n_tex_coord_attribs)
{
CoglPipelineProgendPrivate *priv;
GLuint gl_program;
gboolean program_changed = FALSE;
UpdateUniformsState state;
CoglProgram *user_program;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
/* If neither of the glsl fragend or vertends are used then we don't
need to do anything */
cogl: Add a vertend to generate GLSL The GLSL vertend is mostly only useful for GLES2. The fixed function vertend is kept at higher priority than the GLSL vertend so it is unlikely to be used in any other circumstances.
2010-12-02 20:48:45 +00:00
if (pipeline->fragend != COGL_PIPELINE_FRAGEND_GLSL &&
pipeline->vertend != COGL_PIPELINE_VERTEND_GLSL)
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
return;
priv = get_glsl_priv (pipeline);
user_program = cogl_pipeline_get_user_program (pipeline);
if (priv == NULL)
{
CoglPipeline *authority;
/* Get the authority for anything affecting program state. This
should include both fragment codegen state and vertex codegen
state */
authority = _cogl_pipeline_find_equivalent_parent
(pipeline,
cogl: Add a vertend to generate GLSL The GLSL vertend is mostly only useful for GLES2. The fixed function vertend is kept at higher priority than the GLSL vertend so it is unlikely to be used in any other circumstances.
2010-12-02 20:48:45 +00:00
(COGL_PIPELINE_STATE_AFFECTS_VERTEX_CODEGEN |
Dynamically load the GL or GLES library The GL or GLES library is now dynamically loaded by the CoglRenderer so that it can choose between GL, GLES1 and GLES2 at runtime. The library is loaded by the renderer because it needs to be done before calling eglInitialize. There is a new environment variable called COGL_DRIVER to choose between gl, gles1 or gles2. The #ifdefs for HAVE_COGL_GL, HAVE_COGL_GLES and HAVE_COGL_GLES2 have been changed so that they don't assume the ifdefs are mutually exclusive. They haven't been removed entirely so that it's possible to compile the GLES backends without the the enums from the GL headers. When using GLX the winsys additionally dynamically loads libGL because that also contains the GLX API. It can't be linked in directly because that would probably conflict with the GLES API if the EGL is selected. When compiling with EGL support the library links directly to libEGL because it doesn't contain any GL API so it shouldn't have any conflicts. When building for WGL or OSX Cogl still directly links against the GL API so there is a #define in config.h so that Cogl won't try to dlopen the library. Cogl-pango previously had a #ifdef to detect when the GL backend is used so that it can sneakily pass GL_QUADS to cogl_vertex_buffer_draw. This is now changed so that it queries the CoglContext for the backend. However to get this to work Cogl now needs to export the _cogl_context_get_default symbol and cogl-pango needs some extra -I flags to so that it can include cogl-context-private.h
2011-07-07 19:44:56 +00:00
_cogl_pipeline_get_state_for_fragment_codegen (ctx)) &
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
~COGL_PIPELINE_STATE_LAYERS,
Dynamically load the GL or GLES library The GL or GLES library is now dynamically loaded by the CoglRenderer so that it can choose between GL, GLES1 and GLES2 at runtime. The library is loaded by the renderer because it needs to be done before calling eglInitialize. There is a new environment variable called COGL_DRIVER to choose between gl, gles1 or gles2. The #ifdefs for HAVE_COGL_GL, HAVE_COGL_GLES and HAVE_COGL_GLES2 have been changed so that they don't assume the ifdefs are mutually exclusive. They haven't been removed entirely so that it's possible to compile the GLES backends without the the enums from the GL headers. When using GLX the winsys additionally dynamically loads libGL because that also contains the GLX API. It can't be linked in directly because that would probably conflict with the GLES API if the EGL is selected. When compiling with EGL support the library links directly to libEGL because it doesn't contain any GL API so it shouldn't have any conflicts. When building for WGL or OSX Cogl still directly links against the GL API so there is a #define in config.h so that Cogl won't try to dlopen the library. Cogl-pango previously had a #ifdef to detect when the GL backend is used so that it can sneakily pass GL_QUADS to cogl_vertex_buffer_draw. This is now changed so that it queries the CoglContext for the backend. However to get this to work Cogl now needs to export the _cogl_context_get_default symbol and cogl-pango needs some extra -I flags to so that it can include cogl-context-private.h
2011-07-07 19:44:56 +00:00
_cogl_pipeline_get_layer_state_for_fragment_codegen (ctx) |
pipeline: differentiate texture target and data state There are several places where we need to compare the texture state of a pipeline and sometimes we need to take into consideration if the underlying texture has changed but other times we may only care to know if the texture target has changed. For example the fragends typically generate programs that they want to share with all pipelines with equivalent fragment processing state, and in this case when comparing pipelines we only care about the texture targets since changes to the underlying texture won't affect the programs generated. Prior to this we had tried to handle this by passing around some special flags to various functions that evaluate pipeline state to say when we do/don't care about the texture data, but this wasn't working in all cases and was more awkward to manage than the new approach. Now we simply have two state bits: COGL_PIPELINE_LAYER_STATE_TEXTURE_TARGET and COGL_PIPELINE_LAYER_STATE_TEXTURE_DATA and CoglPipelineLayer has an additional target member. Since all the appropriate code takes masks of these state bits to determine what to evaluate we don't need any extra magic flags.
2011-01-11 16:02:06 +00:00
COGL_PIPELINE_LAYER_STATE_AFFECTS_VERTEX_CODEGEN);
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
priv = get_glsl_priv (authority);
if (priv == NULL)
{
priv = g_slice_new (CoglPipelineProgendPrivate);
priv->ref_count = 1;
priv->program = 0;
priv->n_tex_coord_attribs = 0;
priv->unit_state = g_new (UnitState,
cogl_pipeline_get_n_layers (pipeline));
cogl-vertex-attribute: Use glVertexAttribPointer on GLES2 When the GLES2 wrapper is removed we can't use the fixed function API such as glColorPointer to set the builtin attributes. Instead the GLSL progend now maintains a cache of attribute locations that are queried with glGetAttribLocation. The code that previously maintained a cache of the enabled texture coord arrays has been modified to also cache the enabled vertex attributes under GLES2. The vertex attribute API is now the only place that is using this cache so it has been moved into cogl-vertex-attribute.c
2010-12-03 17:46:16 +00:00
#ifdef HAVE_COGL_GLES2
priv->tex_coord_attribute_locations = NULL;
cogl: upload matrices with uniforms on GLES2 Once the GLES2 wrapper is removed we won't be able to upload the matrices with the fixed function API any more. The fixed function API gives a global state for setting the matrix but if a custom shader uniform is used for the matrices then the state is per program. _cogl_matrix_stack_flush_to_gl is called in a few places and it is assumed the current pipeline doesn't need to be flushed before it is called. To allow these semantics to continue to work, on GLES2 the matrix flush now just stores a reference to the matrix stack in the CoglContext. A pre_paint virtual is added to the progend which is called whenever a pipeline is flushed, even if the same pipeline was flushed already. This gives the GLSL progend a chance to upload the matrices to the uniforms. The combined modelview/projection matrix is only calculated if it is used. The generated programs end up never using the modelview or projection matrix so it usually only has to upload the combined matrix. When a matrix stack is flushed a reference is taked to it by the pipeline progend and the age is stored so that if the same state is used with the same program again then we don't need to reupload the uniform.
2010-12-06 12:31:51 +00:00
priv->flushed_modelview_stack = NULL;
priv->flushed_modelview_is_identity = FALSE;
priv->flushed_projection_stack = NULL;
cogl-vertex-attribute: Use glVertexAttribPointer on GLES2 When the GLES2 wrapper is removed we can't use the fixed function API such as glColorPointer to set the builtin attributes. Instead the GLSL progend now maintains a cache of attribute locations that are queried with glGetAttribLocation. The code that previously maintained a cache of the enabled texture coord arrays has been modified to also cache the enabled vertex attributes under GLES2. The vertex attribute API is now the only place that is using this cache so it has been moved into cogl-vertex-attribute.c
2010-12-03 17:46:16 +00:00
#endif
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
set_glsl_priv (authority, priv);
}
if (authority != pipeline)
{
priv->ref_count++;
set_glsl_priv (pipeline, priv);
}
}
/* If the program has changed since the last link then we do
* need to relink
*
* Also if the number of texture coordinate attributes in use has
* increased, then delete the program so we can prepend a new
* _cogl_tex_coord[] varying array declaration. */
if (priv->program && user_program &&
(user_program->age != priv->user_program_age ||
n_tex_coord_attribs > priv->n_tex_coord_attribs))
{
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
GE( ctx, glDeleteProgram (priv->program) );
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
priv->program = 0;
}
if (priv->program == 0)
{
GLuint backend_shader;
GSList *l;
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
GE_RET( priv->program, ctx, glCreateProgram () );
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
/* Attach all of the shader from the user program */
if (user_program)
{
if (priv->n_tex_coord_attribs > n_tex_coord_attribs)
n_tex_coord_attribs = priv->n_tex_coord_attribs;
#ifdef HAVE_COGL_GLES2
/* Find the largest count of texture coordinate attributes
* associated with each of the shaders so we can ensure a consistent
* _cogl_tex_coord[] array declaration across all of the shaders.*/
Dynamically load the GL or GLES library The GL or GLES library is now dynamically loaded by the CoglRenderer so that it can choose between GL, GLES1 and GLES2 at runtime. The library is loaded by the renderer because it needs to be done before calling eglInitialize. There is a new environment variable called COGL_DRIVER to choose between gl, gles1 or gles2. The #ifdefs for HAVE_COGL_GL, HAVE_COGL_GLES and HAVE_COGL_GLES2 have been changed so that they don't assume the ifdefs are mutually exclusive. They haven't been removed entirely so that it's possible to compile the GLES backends without the the enums from the GL headers. When using GLX the winsys additionally dynamically loads libGL because that also contains the GLX API. It can't be linked in directly because that would probably conflict with the GLES API if the EGL is selected. When compiling with EGL support the library links directly to libEGL because it doesn't contain any GL API so it shouldn't have any conflicts. When building for WGL or OSX Cogl still directly links against the GL API so there is a #define in config.h so that Cogl won't try to dlopen the library. Cogl-pango previously had a #ifdef to detect when the GL backend is used so that it can sneakily pass GL_QUADS to cogl_vertex_buffer_draw. This is now changed so that it queries the CoglContext for the backend. However to get this to work Cogl now needs to export the _cogl_context_get_default symbol and cogl-pango needs some extra -I flags to so that it can include cogl-context-private.h
2011-07-07 19:44:56 +00:00
if (ctx->driver == COGL_DRIVER_GLES2 &&
user_program)
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
for (l = user_program->attached_shaders; l; l = l->next)
{
CoglShader *shader = l->data;
n_tex_coord_attribs = MAX (shader->n_tex_coord_attribs,
n_tex_coord_attribs);
}
#endif
for (l = user_program->attached_shaders; l; l = l->next)
{
CoglShader *shader = l->data;
_cogl_shader_compile_real (shader, n_tex_coord_attribs);
g_assert (shader->language == COGL_SHADER_LANGUAGE_GLSL);
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
GE( ctx, glAttachShader (priv->program,
shader->gl_handle) );
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
}
priv->user_program_age = user_program->age;
}
/* Attach any shaders from the GLSL backends */
if (pipeline->fragend == COGL_PIPELINE_FRAGEND_GLSL &&
(backend_shader = _cogl_pipeline_fragend_glsl_get_shader (pipeline)))
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
GE( ctx, glAttachShader (priv->program, backend_shader) );
cogl: Add a vertend to generate GLSL The GLSL vertend is mostly only useful for GLES2. The fixed function vertend is kept at higher priority than the GLSL vertend so it is unlikely to be used in any other circumstances.
2010-12-02 20:48:45 +00:00
if (pipeline->vertend == COGL_PIPELINE_VERTEND_GLSL &&
(backend_shader = _cogl_pipeline_vertend_glsl_get_shader (pipeline)))
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
GE( ctx, glAttachShader (priv->program, backend_shader) );
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
link_program (priv->program);
program_changed = TRUE;
priv->n_tex_coord_attribs = n_tex_coord_attribs;
}
gl_program = priv->program;
cogl: Add a vertend to generate GLSL The GLSL vertend is mostly only useful for GLES2. The fixed function vertend is kept at higher priority than the GLSL vertend so it is unlikely to be used in any other circumstances.
2010-12-02 20:48:45 +00:00
if (pipeline->fragend == COGL_PIPELINE_FRAGEND_GLSL)
_cogl_use_fragment_program (gl_program, COGL_PIPELINE_PROGRAM_TYPE_GLSL);
if (pipeline->vertend == COGL_PIPELINE_VERTEND_GLSL)
_cogl_use_vertex_program (gl_program, COGL_PIPELINE_PROGRAM_TYPE_GLSL);
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
state.unit = 0;
state.gl_program = gl_program;
state.priv = priv;
if (program_changed)
cogl_pipeline_foreach_layer (pipeline,
get_uniform_cb,
&state);
state.unit = 0;
state.update_all = (program_changed ||
priv->last_used_for_pipeline != pipeline);
cogl_pipeline_foreach_layer (pipeline,
update_constants_cb,
&state);
#ifdef HAVE_COGL_GLES2
Dynamically load the GL or GLES library The GL or GLES library is now dynamically loaded by the CoglRenderer so that it can choose between GL, GLES1 and GLES2 at runtime. The library is loaded by the renderer because it needs to be done before calling eglInitialize. There is a new environment variable called COGL_DRIVER to choose between gl, gles1 or gles2. The #ifdefs for HAVE_COGL_GL, HAVE_COGL_GLES and HAVE_COGL_GLES2 have been changed so that they don't assume the ifdefs are mutually exclusive. They haven't been removed entirely so that it's possible to compile the GLES backends without the the enums from the GL headers. When using GLX the winsys additionally dynamically loads libGL because that also contains the GLX API. It can't be linked in directly because that would probably conflict with the GLES API if the EGL is selected. When compiling with EGL support the library links directly to libEGL because it doesn't contain any GL API so it shouldn't have any conflicts. When building for WGL or OSX Cogl still directly links against the GL API so there is a #define in config.h so that Cogl won't try to dlopen the library. Cogl-pango previously had a #ifdef to detect when the GL backend is used so that it can sneakily pass GL_QUADS to cogl_vertex_buffer_draw. This is now changed so that it queries the CoglContext for the backend. However to get this to work Cogl now needs to export the _cogl_context_get_default symbol and cogl-pango needs some extra -I flags to so that it can include cogl-context-private.h
2011-07-07 19:44:56 +00:00
if (ctx->driver == COGL_DRIVER_GLES2)
cogl: Add a vertend to generate GLSL The GLSL vertend is mostly only useful for GLES2. The fixed function vertend is kept at higher priority than the GLSL vertend so it is unlikely to be used in any other circumstances.
2010-12-02 20:48:45 +00:00
{
Dynamically load the GL or GLES library The GL or GLES library is now dynamically loaded by the CoglRenderer so that it can choose between GL, GLES1 and GLES2 at runtime. The library is loaded by the renderer because it needs to be done before calling eglInitialize. There is a new environment variable called COGL_DRIVER to choose between gl, gles1 or gles2. The #ifdefs for HAVE_COGL_GL, HAVE_COGL_GLES and HAVE_COGL_GLES2 have been changed so that they don't assume the ifdefs are mutually exclusive. They haven't been removed entirely so that it's possible to compile the GLES backends without the the enums from the GL headers. When using GLX the winsys additionally dynamically loads libGL because that also contains the GLX API. It can't be linked in directly because that would probably conflict with the GLES API if the EGL is selected. When compiling with EGL support the library links directly to libEGL because it doesn't contain any GL API so it shouldn't have any conflicts. When building for WGL or OSX Cogl still directly links against the GL API so there is a #define in config.h so that Cogl won't try to dlopen the library. Cogl-pango previously had a #ifdef to detect when the GL backend is used so that it can sneakily pass GL_QUADS to cogl_vertex_buffer_draw. This is now changed so that it queries the CoglContext for the backend. However to get this to work Cogl now needs to export the _cogl_context_get_default symbol and cogl-pango needs some extra -I flags to so that it can include cogl-context-private.h
2011-07-07 19:44:56 +00:00
if (program_changed)
{
int i;
cogl-pipeline-progend-glsl: Generalize updating GLES2 uniforms The uniforms for the alpha test reference value and point size on GLES2 are updating using similar code. This generalizes the code so that there is a static array of predefined builtin uniforms which contains the uniform name, a pointer to a function to get the value from the pipeline, a pointer to a function to update the uniform and a flag representing which CoglPipelineState change affects the uniform. The uniforms are then updated in a loop. This should simplify adding more builtin uniforms.
2011-01-13 18:24:22 +00:00
Dynamically load the GL or GLES library The GL or GLES library is now dynamically loaded by the CoglRenderer so that it can choose between GL, GLES1 and GLES2 at runtime. The library is loaded by the renderer because it needs to be done before calling eglInitialize. There is a new environment variable called COGL_DRIVER to choose between gl, gles1 or gles2. The #ifdefs for HAVE_COGL_GL, HAVE_COGL_GLES and HAVE_COGL_GLES2 have been changed so that they don't assume the ifdefs are mutually exclusive. They haven't been removed entirely so that it's possible to compile the GLES backends without the the enums from the GL headers. When using GLX the winsys additionally dynamically loads libGL because that also contains the GLX API. It can't be linked in directly because that would probably conflict with the GLES API if the EGL is selected. When compiling with EGL support the library links directly to libEGL because it doesn't contain any GL API so it shouldn't have any conflicts. When building for WGL or OSX Cogl still directly links against the GL API so there is a #define in config.h so that Cogl won't try to dlopen the library. Cogl-pango previously had a #ifdef to detect when the GL backend is used so that it can sneakily pass GL_QUADS to cogl_vertex_buffer_draw. This is now changed so that it queries the CoglContext for the backend. However to get this to work Cogl now needs to export the _cogl_context_get_default symbol and cogl-pango needs some extra -I flags to so that it can include cogl-context-private.h
2011-07-07 19:44:56 +00:00
clear_attribute_cache (priv);
clear_flushed_matrix_stacks (priv);
cogl-vertex-attribute: Use glVertexAttribPointer on GLES2 When the GLES2 wrapper is removed we can't use the fixed function API such as glColorPointer to set the builtin attributes. Instead the GLSL progend now maintains a cache of attribute locations that are queried with glGetAttribLocation. The code that previously maintained a cache of the enabled texture coord arrays has been modified to also cache the enabled vertex attributes under GLES2. The vertex attribute API is now the only place that is using this cache so it has been moved into cogl-vertex-attribute.c
2010-12-03 17:46:16 +00:00
Dynamically load the GL or GLES library The GL or GLES library is now dynamically loaded by the CoglRenderer so that it can choose between GL, GLES1 and GLES2 at runtime. The library is loaded by the renderer because it needs to be done before calling eglInitialize. There is a new environment variable called COGL_DRIVER to choose between gl, gles1 or gles2. The #ifdefs for HAVE_COGL_GL, HAVE_COGL_GLES and HAVE_COGL_GLES2 have been changed so that they don't assume the ifdefs are mutually exclusive. They haven't been removed entirely so that it's possible to compile the GLES backends without the the enums from the GL headers. When using GLX the winsys additionally dynamically loads libGL because that also contains the GLX API. It can't be linked in directly because that would probably conflict with the GLES API if the EGL is selected. When compiling with EGL support the library links directly to libEGL because it doesn't contain any GL API so it shouldn't have any conflicts. When building for WGL or OSX Cogl still directly links against the GL API so there is a #define in config.h so that Cogl won't try to dlopen the library. Cogl-pango previously had a #ifdef to detect when the GL backend is used so that it can sneakily pass GL_QUADS to cogl_vertex_buffer_draw. This is now changed so that it queries the CoglContext for the backend. However to get this to work Cogl now needs to export the _cogl_context_get_default symbol and cogl-pango needs some extra -I flags to so that it can include cogl-context-private.h
2011-07-07 19:44:56 +00:00
for (i = 0; i < G_N_ELEMENTS (builtin_uniforms); i++)
GE_RET( priv->builtin_uniform_locations[i],
ctx,
glGetUniformLocation (gl_program,
builtin_uniforms[i].uniform_name) );
cogl: Add a vertend to generate GLSL The GLSL vertend is mostly only useful for GLES2. The fixed function vertend is kept at higher priority than the GLSL vertend so it is unlikely to be used in any other circumstances.
2010-12-02 20:48:45 +00:00
Dynamically load the GL or GLES library The GL or GLES library is now dynamically loaded by the CoglRenderer so that it can choose between GL, GLES1 and GLES2 at runtime. The library is loaded by the renderer because it needs to be done before calling eglInitialize. There is a new environment variable called COGL_DRIVER to choose between gl, gles1 or gles2. The #ifdefs for HAVE_COGL_GL, HAVE_COGL_GLES and HAVE_COGL_GLES2 have been changed so that they don't assume the ifdefs are mutually exclusive. They haven't been removed entirely so that it's possible to compile the GLES backends without the the enums from the GL headers. When using GLX the winsys additionally dynamically loads libGL because that also contains the GLX API. It can't be linked in directly because that would probably conflict with the GLES API if the EGL is selected. When compiling with EGL support the library links directly to libEGL because it doesn't contain any GL API so it shouldn't have any conflicts. When building for WGL or OSX Cogl still directly links against the GL API so there is a #define in config.h so that Cogl won't try to dlopen the library. Cogl-pango previously had a #ifdef to detect when the GL backend is used so that it can sneakily pass GL_QUADS to cogl_vertex_buffer_draw. This is now changed so that it queries the CoglContext for the backend. However to get this to work Cogl now needs to export the _cogl_context_get_default symbol and cogl-pango needs some extra -I flags to so that it can include cogl-context-private.h
2011-07-07 19:44:56 +00:00
GE_RET( priv->modelview_uniform,
ctx, glGetUniformLocation (gl_program,
"cogl_modelview_matrix") );
cogl: upload matrices with uniforms on GLES2 Once the GLES2 wrapper is removed we won't be able to upload the matrices with the fixed function API any more. The fixed function API gives a global state for setting the matrix but if a custom shader uniform is used for the matrices then the state is per program. _cogl_matrix_stack_flush_to_gl is called in a few places and it is assumed the current pipeline doesn't need to be flushed before it is called. To allow these semantics to continue to work, on GLES2 the matrix flush now just stores a reference to the matrix stack in the CoglContext. A pre_paint virtual is added to the progend which is called whenever a pipeline is flushed, even if the same pipeline was flushed already. This gives the GLSL progend a chance to upload the matrices to the uniforms. The combined modelview/projection matrix is only calculated if it is used. The generated programs end up never using the modelview or projection matrix so it usually only has to upload the combined matrix. When a matrix stack is flushed a reference is taked to it by the pipeline progend and the age is stored so that if the same state is used with the same program again then we don't need to reupload the uniform.
2010-12-06 12:31:51 +00:00
Dynamically load the GL or GLES library The GL or GLES library is now dynamically loaded by the CoglRenderer so that it can choose between GL, GLES1 and GLES2 at runtime. The library is loaded by the renderer because it needs to be done before calling eglInitialize. There is a new environment variable called COGL_DRIVER to choose between gl, gles1 or gles2. The #ifdefs for HAVE_COGL_GL, HAVE_COGL_GLES and HAVE_COGL_GLES2 have been changed so that they don't assume the ifdefs are mutually exclusive. They haven't been removed entirely so that it's possible to compile the GLES backends without the the enums from the GL headers. When using GLX the winsys additionally dynamically loads libGL because that also contains the GLX API. It can't be linked in directly because that would probably conflict with the GLES API if the EGL is selected. When compiling with EGL support the library links directly to libEGL because it doesn't contain any GL API so it shouldn't have any conflicts. When building for WGL or OSX Cogl still directly links against the GL API so there is a #define in config.h so that Cogl won't try to dlopen the library. Cogl-pango previously had a #ifdef to detect when the GL backend is used so that it can sneakily pass GL_QUADS to cogl_vertex_buffer_draw. This is now changed so that it queries the CoglContext for the backend. However to get this to work Cogl now needs to export the _cogl_context_get_default symbol and cogl-pango needs some extra -I flags to so that it can include cogl-context-private.h
2011-07-07 19:44:56 +00:00
GE_RET( priv->projection_uniform,
ctx, glGetUniformLocation (gl_program,
"cogl_projection_matrix") );
cogl: upload matrices with uniforms on GLES2 Once the GLES2 wrapper is removed we won't be able to upload the matrices with the fixed function API any more. The fixed function API gives a global state for setting the matrix but if a custom shader uniform is used for the matrices then the state is per program. _cogl_matrix_stack_flush_to_gl is called in a few places and it is assumed the current pipeline doesn't need to be flushed before it is called. To allow these semantics to continue to work, on GLES2 the matrix flush now just stores a reference to the matrix stack in the CoglContext. A pre_paint virtual is added to the progend which is called whenever a pipeline is flushed, even if the same pipeline was flushed already. This gives the GLSL progend a chance to upload the matrices to the uniforms. The combined modelview/projection matrix is only calculated if it is used. The generated programs end up never using the modelview or projection matrix so it usually only has to upload the combined matrix. When a matrix stack is flushed a reference is taked to it by the pipeline progend and the age is stored so that if the same state is used with the same program again then we don't need to reupload the uniform.
2010-12-06 12:31:51 +00:00
Dynamically load the GL or GLES library The GL or GLES library is now dynamically loaded by the CoglRenderer so that it can choose between GL, GLES1 and GLES2 at runtime. The library is loaded by the renderer because it needs to be done before calling eglInitialize. There is a new environment variable called COGL_DRIVER to choose between gl, gles1 or gles2. The #ifdefs for HAVE_COGL_GL, HAVE_COGL_GLES and HAVE_COGL_GLES2 have been changed so that they don't assume the ifdefs are mutually exclusive. They haven't been removed entirely so that it's possible to compile the GLES backends without the the enums from the GL headers. When using GLX the winsys additionally dynamically loads libGL because that also contains the GLX API. It can't be linked in directly because that would probably conflict with the GLES API if the EGL is selected. When compiling with EGL support the library links directly to libEGL because it doesn't contain any GL API so it shouldn't have any conflicts. When building for WGL or OSX Cogl still directly links against the GL API so there is a #define in config.h so that Cogl won't try to dlopen the library. Cogl-pango previously had a #ifdef to detect when the GL backend is used so that it can sneakily pass GL_QUADS to cogl_vertex_buffer_draw. This is now changed so that it queries the CoglContext for the backend. However to get this to work Cogl now needs to export the _cogl_context_get_default symbol and cogl-pango needs some extra -I flags to so that it can include cogl-context-private.h
2011-07-07 19:44:56 +00:00
GE_RET( priv->mvp_uniform,
ctx,
glGetUniformLocation (gl_program,
"cogl_modelview_projection_matrix") );
}
if (program_changed ||
priv->last_used_for_pipeline != pipeline)
priv->dirty_builtin_uniforms = ~(unsigned long) 0;
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
Dynamically load the GL or GLES library The GL or GLES library is now dynamically loaded by the CoglRenderer so that it can choose between GL, GLES1 and GLES2 at runtime. The library is loaded by the renderer because it needs to be done before calling eglInitialize. There is a new environment variable called COGL_DRIVER to choose between gl, gles1 or gles2. The #ifdefs for HAVE_COGL_GL, HAVE_COGL_GLES and HAVE_COGL_GLES2 have been changed so that they don't assume the ifdefs are mutually exclusive. They haven't been removed entirely so that it's possible to compile the GLES backends without the the enums from the GL headers. When using GLX the winsys additionally dynamically loads libGL because that also contains the GLX API. It can't be linked in directly because that would probably conflict with the GLES API if the EGL is selected. When compiling with EGL support the library links directly to libEGL because it doesn't contain any GL API so it shouldn't have any conflicts. When building for WGL or OSX Cogl still directly links against the GL API so there is a #define in config.h so that Cogl won't try to dlopen the library. Cogl-pango previously had a #ifdef to detect when the GL backend is used so that it can sneakily pass GL_QUADS to cogl_vertex_buffer_draw. This is now changed so that it queries the CoglContext for the backend. However to get this to work Cogl now needs to export the _cogl_context_get_default symbol and cogl-pango needs some extra -I flags to so that it can include cogl-context-private.h
2011-07-07 19:44:56 +00:00
update_builtin_uniforms (pipeline, gl_program, priv);
}
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
#endif
if (user_program)
_cogl_program_flush_uniforms (user_program,
gl_program,
program_changed);
/* We need to track the last pipeline that the program was used with
* so know if we need to update all of the uniforms */
priv->last_used_for_pipeline = pipeline;
}
static void
_cogl_pipeline_progend_glsl_pre_change_notify (CoglPipeline *pipeline,
CoglPipelineState change,
const CoglColor *new_color)
{
Dynamically load the GL or GLES library The GL or GLES library is now dynamically loaded by the CoglRenderer so that it can choose between GL, GLES1 and GLES2 at runtime. The library is loaded by the renderer because it needs to be done before calling eglInitialize. There is a new environment variable called COGL_DRIVER to choose between gl, gles1 or gles2. The #ifdefs for HAVE_COGL_GL, HAVE_COGL_GLES and HAVE_COGL_GLES2 have been changed so that they don't assume the ifdefs are mutually exclusive. They haven't been removed entirely so that it's possible to compile the GLES backends without the the enums from the GL headers. When using GLX the winsys additionally dynamically loads libGL because that also contains the GLX API. It can't be linked in directly because that would probably conflict with the GLES API if the EGL is selected. When compiling with EGL support the library links directly to libEGL because it doesn't contain any GL API so it shouldn't have any conflicts. When building for WGL or OSX Cogl still directly links against the GL API so there is a #define in config.h so that Cogl won't try to dlopen the library. Cogl-pango previously had a #ifdef to detect when the GL backend is used so that it can sneakily pass GL_QUADS to cogl_vertex_buffer_draw. This is now changed so that it queries the CoglContext for the backend. However to get this to work Cogl now needs to export the _cogl_context_get_default symbol and cogl-pango needs some extra -I flags to so that it can include cogl-context-private.h
2011-07-07 19:44:56 +00:00
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
if ((change & _cogl_pipeline_get_state_for_fragment_codegen (ctx)))
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
dirty_glsl_program_state (pipeline);
cogl: Add a vertend to generate GLSL The GLSL vertend is mostly only useful for GLES2. The fixed function vertend is kept at higher priority than the GLSL vertend so it is unlikely to be used in any other circumstances.
2010-12-02 20:48:45 +00:00
#ifdef HAVE_COGL_GLES2
Dynamically load the GL or GLES library The GL or GLES library is now dynamically loaded by the CoglRenderer so that it can choose between GL, GLES1 and GLES2 at runtime. The library is loaded by the renderer because it needs to be done before calling eglInitialize. There is a new environment variable called COGL_DRIVER to choose between gl, gles1 or gles2. The #ifdefs for HAVE_COGL_GL, HAVE_COGL_GLES and HAVE_COGL_GLES2 have been changed so that they don't assume the ifdefs are mutually exclusive. They haven't been removed entirely so that it's possible to compile the GLES backends without the the enums from the GL headers. When using GLX the winsys additionally dynamically loads libGL because that also contains the GLX API. It can't be linked in directly because that would probably conflict with the GLES API if the EGL is selected. When compiling with EGL support the library links directly to libEGL because it doesn't contain any GL API so it shouldn't have any conflicts. When building for WGL or OSX Cogl still directly links against the GL API so there is a #define in config.h so that Cogl won't try to dlopen the library. Cogl-pango previously had a #ifdef to detect when the GL backend is used so that it can sneakily pass GL_QUADS to cogl_vertex_buffer_draw. This is now changed so that it queries the CoglContext for the backend. However to get this to work Cogl now needs to export the _cogl_context_get_default symbol and cogl-pango needs some extra -I flags to so that it can include cogl-context-private.h
2011-07-07 19:44:56 +00:00
else if (ctx->driver == COGL_DRIVER_GLES2)
cogl: Add a vertend to generate GLSL The GLSL vertend is mostly only useful for GLES2. The fixed function vertend is kept at higher priority than the GLSL vertend so it is unlikely to be used in any other circumstances.
2010-12-02 20:48:45 +00:00
{
cogl-pipeline-progend-glsl: Generalize updating GLES2 uniforms The uniforms for the alpha test reference value and point size on GLES2 are updating using similar code. This generalizes the code so that there is a static array of predefined builtin uniforms which contains the uniform name, a pointer to a function to get the value from the pipeline, a pointer to a function to update the uniform and a flag representing which CoglPipelineState change affects the uniform. The uniforms are then updated in a loop. This should simplify adding more builtin uniforms.
2011-01-13 18:24:22 +00:00
int i;
for (i = 0; i < G_N_ELEMENTS (builtin_uniforms); i++)
if ((change & builtin_uniforms[i].change))
{
CoglPipelineProgendPrivate *priv = get_glsl_priv (pipeline);
if (priv)
priv->dirty_builtin_uniforms |= 1 << i;
return;
}
cogl: Add a vertend to generate GLSL The GLSL vertend is mostly only useful for GLES2. The fixed function vertend is kept at higher priority than the GLSL vertend so it is unlikely to be used in any other circumstances.
2010-12-02 20:48:45 +00:00
}
#endif /* HAVE_COGL_GLES2 */
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
}
/* NB: layers are considered immutable once they have any dependants
* so although multiple pipelines can end up depending on a single
* static layer, we can guarantee that if a layer is being *changed*
* then it can only have one pipeline depending on it.
*
* XXX: Don't forget this is *pre* change, we can't read the new value
* yet!
*/
static void
_cogl_pipeline_progend_glsl_layer_pre_change_notify (
CoglPipeline *owner,
CoglPipelineLayer *layer,
CoglPipelineLayerState change)
{
Dynamically load the GL or GLES library The GL or GLES library is now dynamically loaded by the CoglRenderer so that it can choose between GL, GLES1 and GLES2 at runtime. The library is loaded by the renderer because it needs to be done before calling eglInitialize. There is a new environment variable called COGL_DRIVER to choose between gl, gles1 or gles2. The #ifdefs for HAVE_COGL_GL, HAVE_COGL_GLES and HAVE_COGL_GLES2 have been changed so that they don't assume the ifdefs are mutually exclusive. They haven't been removed entirely so that it's possible to compile the GLES backends without the the enums from the GL headers. When using GLX the winsys additionally dynamically loads libGL because that also contains the GLX API. It can't be linked in directly because that would probably conflict with the GLES API if the EGL is selected. When compiling with EGL support the library links directly to libEGL because it doesn't contain any GL API so it shouldn't have any conflicts. When building for WGL or OSX Cogl still directly links against the GL API so there is a #define in config.h so that Cogl won't try to dlopen the library. Cogl-pango previously had a #ifdef to detect when the GL backend is used so that it can sneakily pass GL_QUADS to cogl_vertex_buffer_draw. This is now changed so that it queries the CoglContext for the backend. However to get this to work Cogl now needs to export the _cogl_context_get_default symbol and cogl-pango needs some extra -I flags to so that it can include cogl-context-private.h
2011-07-07 19:44:56 +00:00
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
if ((change & _cogl_pipeline_get_state_for_fragment_codegen (ctx)))
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
{
dirty_glsl_program_state (owner);
return;
}
if (change & COGL_PIPELINE_LAYER_STATE_COMBINE_CONSTANT)
{
CoglPipelineProgendPrivate *priv = get_glsl_priv (owner);
if (priv)
{
int unit_index = _cogl_pipeline_layer_get_unit_index (layer);
priv->unit_state[unit_index].dirty_combine_constant = TRUE;
}
}
cogl: upload matrices with uniforms on GLES2 Once the GLES2 wrapper is removed we won't be able to upload the matrices with the fixed function API any more. The fixed function API gives a global state for setting the matrix but if a custom shader uniform is used for the matrices then the state is per program. _cogl_matrix_stack_flush_to_gl is called in a few places and it is assumed the current pipeline doesn't need to be flushed before it is called. To allow these semantics to continue to work, on GLES2 the matrix flush now just stores a reference to the matrix stack in the CoglContext. A pre_paint virtual is added to the progend which is called whenever a pipeline is flushed, even if the same pipeline was flushed already. This gives the GLSL progend a chance to upload the matrices to the uniforms. The combined modelview/projection matrix is only calculated if it is used. The generated programs end up never using the modelview or projection matrix so it usually only has to upload the combined matrix. When a matrix stack is flushed a reference is taked to it by the pipeline progend and the age is stored so that if the same state is used with the same program again then we don't need to reupload the uniform.
2010-12-06 12:31:51 +00:00
if (change & COGL_PIPELINE_LAYER_STATE_USER_MATRIX)
{
CoglPipelineProgendPrivate *priv = get_glsl_priv (owner);
if (priv)
{
int unit_index = _cogl_pipeline_layer_get_unit_index (layer);
priv->unit_state[unit_index].dirty_texture_matrix = TRUE;
}
}
}
#ifdef HAVE_COGL_GLES2
static void
flush_modelview_cb (gboolean is_identity,
const CoglMatrix *matrix,
void *user_data)
{
CoglPipelineProgendPrivate *priv = user_data;
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
GE( ctx, glUniformMatrix4fv (priv->modelview_uniform, 1, FALSE,
cogl_matrix_get_array (matrix)) );
cogl: upload matrices with uniforms on GLES2 Once the GLES2 wrapper is removed we won't be able to upload the matrices with the fixed function API any more. The fixed function API gives a global state for setting the matrix but if a custom shader uniform is used for the matrices then the state is per program. _cogl_matrix_stack_flush_to_gl is called in a few places and it is assumed the current pipeline doesn't need to be flushed before it is called. To allow these semantics to continue to work, on GLES2 the matrix flush now just stores a reference to the matrix stack in the CoglContext. A pre_paint virtual is added to the progend which is called whenever a pipeline is flushed, even if the same pipeline was flushed already. This gives the GLSL progend a chance to upload the matrices to the uniforms. The combined modelview/projection matrix is only calculated if it is used. The generated programs end up never using the modelview or projection matrix so it usually only has to upload the combined matrix. When a matrix stack is flushed a reference is taked to it by the pipeline progend and the age is stored so that if the same state is used with the same program again then we don't need to reupload the uniform.
2010-12-06 12:31:51 +00:00
}
static void
flush_projection_cb (gboolean is_identity,
const CoglMatrix *matrix,
void *user_data)
{
CoglPipelineProgendPrivate *priv = user_data;
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
GE( ctx, glUniformMatrix4fv (priv->projection_uniform, 1, FALSE,
cogl_matrix_get_array (matrix)) );
cogl: upload matrices with uniforms on GLES2 Once the GLES2 wrapper is removed we won't be able to upload the matrices with the fixed function API any more. The fixed function API gives a global state for setting the matrix but if a custom shader uniform is used for the matrices then the state is per program. _cogl_matrix_stack_flush_to_gl is called in a few places and it is assumed the current pipeline doesn't need to be flushed before it is called. To allow these semantics to continue to work, on GLES2 the matrix flush now just stores a reference to the matrix stack in the CoglContext. A pre_paint virtual is added to the progend which is called whenever a pipeline is flushed, even if the same pipeline was flushed already. This gives the GLSL progend a chance to upload the matrices to the uniforms. The combined modelview/projection matrix is only calculated if it is used. The generated programs end up never using the modelview or projection matrix so it usually only has to upload the combined matrix. When a matrix stack is flushed a reference is taked to it by the pipeline progend and the age is stored so that if the same state is used with the same program again then we don't need to reupload the uniform.
2010-12-06 12:31:51 +00:00
}
typedef struct
{
CoglPipelineProgendPrivate *priv;
const CoglMatrix *projection_matrix;
} FlushCombinedData;
static void
flush_combined_step_two_cb (gboolean is_identity,
const CoglMatrix *matrix,
void *user_data)
{
FlushCombinedData *data = user_data;
CoglMatrix mvp_matrix;
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl: upload matrices with uniforms on GLES2 Once the GLES2 wrapper is removed we won't be able to upload the matrices with the fixed function API any more. The fixed function API gives a global state for setting the matrix but if a custom shader uniform is used for the matrices then the state is per program. _cogl_matrix_stack_flush_to_gl is called in a few places and it is assumed the current pipeline doesn't need to be flushed before it is called. To allow these semantics to continue to work, on GLES2 the matrix flush now just stores a reference to the matrix stack in the CoglContext. A pre_paint virtual is added to the progend which is called whenever a pipeline is flushed, even if the same pipeline was flushed already. This gives the GLSL progend a chance to upload the matrices to the uniforms. The combined modelview/projection matrix is only calculated if it is used. The generated programs end up never using the modelview or projection matrix so it usually only has to upload the combined matrix. When a matrix stack is flushed a reference is taked to it by the pipeline progend and the age is stored so that if the same state is used with the same program again then we don't need to reupload the uniform.
2010-12-06 12:31:51 +00:00
/* If the modelview is the identity then we can bypass the matrix
multiplication */
if (is_identity)
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
{
const float *array = cogl_matrix_get_array (data->projection_matrix);
GE( ctx, glUniformMatrix4fv (data->priv->mvp_uniform, 1, FALSE, array ) );
}
cogl: upload matrices with uniforms on GLES2 Once the GLES2 wrapper is removed we won't be able to upload the matrices with the fixed function API any more. The fixed function API gives a global state for setting the matrix but if a custom shader uniform is used for the matrices then the state is per program. _cogl_matrix_stack_flush_to_gl is called in a few places and it is assumed the current pipeline doesn't need to be flushed before it is called. To allow these semantics to continue to work, on GLES2 the matrix flush now just stores a reference to the matrix stack in the CoglContext. A pre_paint virtual is added to the progend which is called whenever a pipeline is flushed, even if the same pipeline was flushed already. This gives the GLSL progend a chance to upload the matrices to the uniforms. The combined modelview/projection matrix is only calculated if it is used. The generated programs end up never using the modelview or projection matrix so it usually only has to upload the combined matrix. When a matrix stack is flushed a reference is taked to it by the pipeline progend and the age is stored so that if the same state is used with the same program again then we don't need to reupload the uniform.
2010-12-06 12:31:51 +00:00
else
{
cogl_matrix_multiply (&mvp_matrix,
data->projection_matrix,
matrix);
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
GE( ctx, glUniformMatrix4fv (data->priv->mvp_uniform, 1, FALSE,
cogl_matrix_get_array (&mvp_matrix)) );
cogl: upload matrices with uniforms on GLES2 Once the GLES2 wrapper is removed we won't be able to upload the matrices with the fixed function API any more. The fixed function API gives a global state for setting the matrix but if a custom shader uniform is used for the matrices then the state is per program. _cogl_matrix_stack_flush_to_gl is called in a few places and it is assumed the current pipeline doesn't need to be flushed before it is called. To allow these semantics to continue to work, on GLES2 the matrix flush now just stores a reference to the matrix stack in the CoglContext. A pre_paint virtual is added to the progend which is called whenever a pipeline is flushed, even if the same pipeline was flushed already. This gives the GLSL progend a chance to upload the matrices to the uniforms. The combined modelview/projection matrix is only calculated if it is used. The generated programs end up never using the modelview or projection matrix so it usually only has to upload the combined matrix. When a matrix stack is flushed a reference is taked to it by the pipeline progend and the age is stored so that if the same state is used with the same program again then we don't need to reupload the uniform.
2010-12-06 12:31:51 +00:00
}
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
}
cogl: upload matrices with uniforms on GLES2 Once the GLES2 wrapper is removed we won't be able to upload the matrices with the fixed function API any more. The fixed function API gives a global state for setting the matrix but if a custom shader uniform is used for the matrices then the state is per program. _cogl_matrix_stack_flush_to_gl is called in a few places and it is assumed the current pipeline doesn't need to be flushed before it is called. To allow these semantics to continue to work, on GLES2 the matrix flush now just stores a reference to the matrix stack in the CoglContext. A pre_paint virtual is added to the progend which is called whenever a pipeline is flushed, even if the same pipeline was flushed already. This gives the GLSL progend a chance to upload the matrices to the uniforms. The combined modelview/projection matrix is only calculated if it is used. The generated programs end up never using the modelview or projection matrix so it usually only has to upload the combined matrix. When a matrix stack is flushed a reference is taked to it by the pipeline progend and the age is stored so that if the same state is used with the same program again then we don't need to reupload the uniform.
2010-12-06 12:31:51 +00:00
static void
flush_combined_step_one_cb (gboolean is_identity,
const CoglMatrix *matrix,
void *user_data)
{
FlushCombinedData data;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
data.priv = user_data;
data.projection_matrix = matrix;
_cogl_matrix_stack_prepare_for_flush (ctx->flushed_modelview_stack,
COGL_MATRIX_MODELVIEW,
flush_combined_step_two_cb,
&data);
}
static void
_cogl_pipeline_progend_glsl_pre_paint (CoglPipeline *pipeline)
{
CoglPipelineProgendPrivate *priv = get_glsl_priv (pipeline);
gboolean modelview_changed;
gboolean projection_changed;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
Dynamically load the GL or GLES library The GL or GLES library is now dynamically loaded by the CoglRenderer so that it can choose between GL, GLES1 and GLES2 at runtime. The library is loaded by the renderer because it needs to be done before calling eglInitialize. There is a new environment variable called COGL_DRIVER to choose between gl, gles1 or gles2. The #ifdefs for HAVE_COGL_GL, HAVE_COGL_GLES and HAVE_COGL_GLES2 have been changed so that they don't assume the ifdefs are mutually exclusive. They haven't been removed entirely so that it's possible to compile the GLES backends without the the enums from the GL headers. When using GLX the winsys additionally dynamically loads libGL because that also contains the GLX API. It can't be linked in directly because that would probably conflict with the GLES API if the EGL is selected. When compiling with EGL support the library links directly to libEGL because it doesn't contain any GL API so it shouldn't have any conflicts. When building for WGL or OSX Cogl still directly links against the GL API so there is a #define in config.h so that Cogl won't try to dlopen the library. Cogl-pango previously had a #ifdef to detect when the GL backend is used so that it can sneakily pass GL_QUADS to cogl_vertex_buffer_draw. This is now changed so that it queries the CoglContext for the backend. However to get this to work Cogl now needs to export the _cogl_context_get_default symbol and cogl-pango needs some extra -I flags to so that it can include cogl-context-private.h
2011-07-07 19:44:56 +00:00
if (ctx->driver != COGL_DRIVER_GLES2)
return;
cogl: upload matrices with uniforms on GLES2 Once the GLES2 wrapper is removed we won't be able to upload the matrices with the fixed function API any more. The fixed function API gives a global state for setting the matrix but if a custom shader uniform is used for the matrices then the state is per program. _cogl_matrix_stack_flush_to_gl is called in a few places and it is assumed the current pipeline doesn't need to be flushed before it is called. To allow these semantics to continue to work, on GLES2 the matrix flush now just stores a reference to the matrix stack in the CoglContext. A pre_paint virtual is added to the progend which is called whenever a pipeline is flushed, even if the same pipeline was flushed already. This gives the GLSL progend a chance to upload the matrices to the uniforms. The combined modelview/projection matrix is only calculated if it is used. The generated programs end up never using the modelview or projection matrix so it usually only has to upload the combined matrix. When a matrix stack is flushed a reference is taked to it by the pipeline progend and the age is stored so that if the same state is used with the same program again then we don't need to reupload the uniform.
2010-12-06 12:31:51 +00:00
/* We only need to update the matrices if we're using the the GLSL
vertend, but this is a requirement on GLES2 anyway */
g_return_if_fail (pipeline->vertend == COGL_PIPELINE_VERTEND_GLSL);
priv = get_glsl_priv (pipeline);
/* An initial pipeline is flushed while creating the context. At
this point there are no matrices flushed so we can't do
anything */
if (ctx->flushed_modelview_stack == NULL ||
ctx->flushed_projection_stack == NULL)
return;
/* When flushing from the journal the modelview matrix is usually
the identity matrix so it makes sense to optimise this case by
specifically checking whether we already have the identity matrix
which will catch a lot of common cases of redundant flushing */
if (priv->flushed_modelview_is_identity &&
_cogl_matrix_stack_has_identity_flag (ctx->flushed_modelview_stack))
modelview_changed = FALSE;
else
modelview_changed =
priv->flushed_modelview_stack != ctx->flushed_modelview_stack ||
priv->flushed_modelview_stack_age !=
_cogl_matrix_stack_get_age (priv->flushed_modelview_stack);
projection_changed =
priv->flushed_projection_stack != ctx->flushed_projection_stack ||
priv->flushed_projection_stack_age !=
_cogl_matrix_stack_get_age (priv->flushed_projection_stack);
if (modelview_changed)
{
cogl_object_ref (ctx->flushed_modelview_stack);
if (priv->flushed_modelview_stack)
cogl_object_unref (priv->flushed_modelview_stack);
priv->flushed_modelview_stack = ctx->flushed_modelview_stack;
priv->flushed_modelview_stack_age =
_cogl_matrix_stack_get_age (ctx->flushed_modelview_stack);
priv->flushed_modelview_is_identity =
_cogl_matrix_stack_has_identity_flag (ctx->flushed_modelview_stack);
if (priv->modelview_uniform != -1)
_cogl_matrix_stack_prepare_for_flush (priv->flushed_modelview_stack,
COGL_MATRIX_MODELVIEW,
flush_modelview_cb,
priv);
}
if (projection_changed)
{
cogl_object_ref (ctx->flushed_projection_stack);
if (priv->flushed_projection_stack)
cogl_object_unref (priv->flushed_projection_stack);
priv->flushed_projection_stack = ctx->flushed_projection_stack;
priv->flushed_projection_stack_age =
_cogl_matrix_stack_get_age (ctx->flushed_projection_stack);
if (priv->projection_uniform != -1)
_cogl_matrix_stack_prepare_for_flush (priv->flushed_projection_stack,
COGL_MATRIX_PROJECTION,
flush_projection_cb,
priv);
}
if (priv->mvp_uniform != -1 && (modelview_changed || projection_changed))
_cogl_matrix_stack_prepare_for_flush (ctx->flushed_projection_stack,
COGL_MATRIX_PROJECTION,
flush_combined_step_one_cb,
priv);
}
cogl-pipeline-progend-glsl: Generalize updating GLES2 uniforms The uniforms for the alpha test reference value and point size on GLES2 are updating using similar code. This generalizes the code so that there is a static array of predefined builtin uniforms which contains the uniform name, a pointer to a function to get the value from the pipeline, a pointer to a function to update the uniform and a flag representing which CoglPipelineState change affects the uniform. The uniforms are then updated in a loop. This should simplify adding more builtin uniforms.
2011-01-13 18:24:22 +00:00
static void
update_float_uniform (CoglPipeline *pipeline,
int uniform_location,
void *getter_func)
{
float (* float_getter_func) (CoglPipeline *) = getter_func;
float value;
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl-pipeline-progend-glsl: Generalize updating GLES2 uniforms The uniforms for the alpha test reference value and point size on GLES2 are updating using similar code. This generalizes the code so that there is a static array of predefined builtin uniforms which contains the uniform name, a pointer to a function to get the value from the pipeline, a pointer to a function to update the uniform and a flag representing which CoglPipelineState change affects the uniform. The uniforms are then updated in a loop. This should simplify adding more builtin uniforms.
2011-01-13 18:24:22 +00:00
value = float_getter_func (pipeline);
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
GE( ctx, glUniform1f (uniform_location, value) );
cogl-pipeline-progend-glsl: Generalize updating GLES2 uniforms The uniforms for the alpha test reference value and point size on GLES2 are updating using similar code. This generalizes the code so that there is a static array of predefined builtin uniforms which contains the uniform name, a pointer to a function to get the value from the pipeline, a pointer to a function to update the uniform and a flag representing which CoglPipelineState change affects the uniform. The uniforms are then updated in a loop. This should simplify adding more builtin uniforms.
2011-01-13 18:24:22 +00:00
}
cogl: upload matrices with uniforms on GLES2 Once the GLES2 wrapper is removed we won't be able to upload the matrices with the fixed function API any more. The fixed function API gives a global state for setting the matrix but if a custom shader uniform is used for the matrices then the state is per program. _cogl_matrix_stack_flush_to_gl is called in a few places and it is assumed the current pipeline doesn't need to be flushed before it is called. To allow these semantics to continue to work, on GLES2 the matrix flush now just stores a reference to the matrix stack in the CoglContext. A pre_paint virtual is added to the progend which is called whenever a pipeline is flushed, even if the same pipeline was flushed already. This gives the GLSL progend a chance to upload the matrices to the uniforms. The combined modelview/projection matrix is only calculated if it is used. The generated programs end up never using the modelview or projection matrix so it usually only has to upload the combined matrix. When a matrix stack is flushed a reference is taked to it by the pipeline progend and the age is stored so that if the same state is used with the same program again then we don't need to reupload the uniform.
2010-12-06 12:31:51 +00:00
#endif
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
const CoglPipelineProgend _cogl_pipeline_glsl_progend =
{
_cogl_pipeline_progend_glsl_end,
_cogl_pipeline_progend_glsl_pre_change_notify,
cogl: upload matrices with uniforms on GLES2 Once the GLES2 wrapper is removed we won't be able to upload the matrices with the fixed function API any more. The fixed function API gives a global state for setting the matrix but if a custom shader uniform is used for the matrices then the state is per program. _cogl_matrix_stack_flush_to_gl is called in a few places and it is assumed the current pipeline doesn't need to be flushed before it is called. To allow these semantics to continue to work, on GLES2 the matrix flush now just stores a reference to the matrix stack in the CoglContext. A pre_paint virtual is added to the progend which is called whenever a pipeline is flushed, even if the same pipeline was flushed already. This gives the GLSL progend a chance to upload the matrices to the uniforms. The combined modelview/projection matrix is only calculated if it is used. The generated programs end up never using the modelview or projection matrix so it usually only has to upload the combined matrix. When a matrix stack is flushed a reference is taked to it by the pipeline progend and the age is stored so that if the same state is used with the same program again then we don't need to reupload the uniform.
2010-12-06 12:31:51 +00:00
_cogl_pipeline_progend_glsl_layer_pre_change_notify,
#ifdef HAVE_COGL_GLES2
_cogl_pipeline_progend_glsl_pre_paint
#else
NULL
#endif
cogl: Add a GLSL 'progend' 'progend' is short for 'program backend'. The progend is intended to operate on combined state from a fragment backend and a vertex backend. The progend has an 'end' function which is run whenever the pipeline is flushed and the two pipeline change notification functions. All of the progends are run whenever the pipeline is flushed instead of selecting a single one because it is possible that multiple progends may be in use for example if the vertends and fragends are different. The GLSL progend will take the shaders generated by the fragend and vertend and link them into a single program. The fragend code has been changed to only generate the shader and not the program. The idea is that pipelines can share fragment shader objects even if their vertex state is different. The authority for the progend needs to be the combined authority on the vertend and fragend state.
2010-12-02 14:00:46 +00:00
};
#endif /* COGL_PIPELINE_PROGEND_GLSL */
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