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mutter/cogl/driver/gl/cogl-pipeline-opengl-private.h

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material: split the texture unit management out In general cogl-material.c has become far to large to manage in one source file. As one of the ways to try and break it down this patch starts to move some of lower level texture unit state management out into cogl-material-opengl.c. The naming is such because the plan is to follow up and migrate the very GL specific state flushing code into the same file.
2010-07-09 21:53:38 -04:00
/*
* 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:
* Robert Bragg <robert@linux.intel.com>
*/
cogl: rename CoglMaterial -> CoglPipeline This applies an API naming change that's been deliberated over for a while now which is to rename CoglMaterial to CoglPipeline. For now the new pipeline API is marked as experimental and public headers continue to talk about materials not pipelines. The CoglMaterial API is now maintained in terms of the cogl_pipeline API internally. Currently this API is targeting Cogl 2.0 so we will have time to integrate it properly with other upcoming Cogl 2.0 work. The basic reasons for the rename are: - That the term "material" implies to many people that they are constrained to fragment processing; perhaps as some kind of high-level texture abstraction. - In Clutter they get exposed by ClutterTexture actors which may be re-inforcing this misconception. - When comparing how other frameworks use the term material, a material sometimes describes a multi-pass fragment processing technique which isn't the case in Cogl. - In code, "CoglPipeline" will hopefully be a much more self documenting summary of what these objects represent; a full GPU pipeline configuration including, for example, vertex processing, fragment processing and blending. - When considering the API documentation story, at some point we need a document introducing developers to how the "GPU pipeline" works so it should become intuitive that CoglPipeline maps back to that description of the GPU pipeline. - This is consistent in terminology and concept to OpenGL 4's new pipeline object which is a container for program objects. Note: The cogl-material.[ch] files have been renamed to cogl-material-compat.[ch] because otherwise git doesn't seem to treat the change as a moving the old cogl-material.c->cogl-pipeline.c and so we loose all our git-blame history.
2010-10-27 13:54:57 -04:00
#ifndef __COGL_PIPELINE_OPENGL_PRIVATE_H
#define __COGL_PIPELINE_OPENGL_PRIVATE_H
material: split the texture unit management out In general cogl-material.c has become far to large to manage in one source file. As one of the ways to try and break it down this patch starts to move some of lower level texture unit state management out into cogl-material-opengl.c. The naming is such because the plan is to follow up and migrate the very GL specific state flushing code into the same file.
2010-07-09 21:53:38 -04:00
cogl: rename CoglMaterial -> CoglPipeline This applies an API naming change that's been deliberated over for a while now which is to rename CoglMaterial to CoglPipeline. For now the new pipeline API is marked as experimental and public headers continue to talk about materials not pipelines. The CoglMaterial API is now maintained in terms of the cogl_pipeline API internally. Currently this API is targeting Cogl 2.0 so we will have time to integrate it properly with other upcoming Cogl 2.0 work. The basic reasons for the rename are: - That the term "material" implies to many people that they are constrained to fragment processing; perhaps as some kind of high-level texture abstraction. - In Clutter they get exposed by ClutterTexture actors which may be re-inforcing this misconception. - When comparing how other frameworks use the term material, a material sometimes describes a multi-pass fragment processing technique which isn't the case in Cogl. - In code, "CoglPipeline" will hopefully be a much more self documenting summary of what these objects represent; a full GPU pipeline configuration including, for example, vertex processing, fragment processing and blending. - When considering the API documentation story, at some point we need a document introducing developers to how the "GPU pipeline" works so it should become intuitive that CoglPipeline maps back to that description of the GPU pipeline. - This is consistent in terminology and concept to OpenGL 4's new pipeline object which is a container for program objects. Note: The cogl-material.[ch] files have been renamed to cogl-material-compat.[ch] because otherwise git doesn't seem to treat the change as a moving the old cogl-material.c->cogl-pipeline.c and so we loose all our git-blame history.
2010-10-27 13:54:57 -04:00
#include "cogl-pipeline-private.h"
material: split the texture unit management out In general cogl-material.c has become far to large to manage in one source file. As one of the ways to try and break it down this patch starts to move some of lower level texture unit state management out into cogl-material-opengl.c. The naming is such because the plan is to follow up and migrate the very GL specific state flushing code into the same file.
2010-07-09 21:53:38 -04:00
#include "cogl-matrix-stack.h"
/*
cogl: rename CoglMaterial -> CoglPipeline This applies an API naming change that's been deliberated over for a while now which is to rename CoglMaterial to CoglPipeline. For now the new pipeline API is marked as experimental and public headers continue to talk about materials not pipelines. The CoglMaterial API is now maintained in terms of the cogl_pipeline API internally. Currently this API is targeting Cogl 2.0 so we will have time to integrate it properly with other upcoming Cogl 2.0 work. The basic reasons for the rename are: - That the term "material" implies to many people that they are constrained to fragment processing; perhaps as some kind of high-level texture abstraction. - In Clutter they get exposed by ClutterTexture actors which may be re-inforcing this misconception. - When comparing how other frameworks use the term material, a material sometimes describes a multi-pass fragment processing technique which isn't the case in Cogl. - In code, "CoglPipeline" will hopefully be a much more self documenting summary of what these objects represent; a full GPU pipeline configuration including, for example, vertex processing, fragment processing and blending. - When considering the API documentation story, at some point we need a document introducing developers to how the "GPU pipeline" works so it should become intuitive that CoglPipeline maps back to that description of the GPU pipeline. - This is consistent in terminology and concept to OpenGL 4's new pipeline object which is a container for program objects. Note: The cogl-material.[ch] files have been renamed to cogl-material-compat.[ch] because otherwise git doesn't seem to treat the change as a moving the old cogl-material.c->cogl-pipeline.c and so we loose all our git-blame history.
2010-10-27 13:54:57 -04:00
* cogl-pipeline.c owns the GPU's texture unit state so we have some
material: split the texture unit management out In general cogl-material.c has become far to large to manage in one source file. As one of the ways to try and break it down this patch starts to move some of lower level texture unit state management out into cogl-material-opengl.c. The naming is such because the plan is to follow up and migrate the very GL specific state flushing code into the same file.
2010-07-09 21:53:38 -04:00
* private structures for describing the current state of a texture
* unit that we track in a per context array (ctx->texture_units) that
* grows according to the largest texture unit used so far...
*
* Roughly speaking the members in this structure are of two kinds:
* either they are a low level reflection of the state we send to
* OpenGL or they are for high level meta data assoicated with the
cogl: rename CoglMaterial -> CoglPipeline This applies an API naming change that's been deliberated over for a while now which is to rename CoglMaterial to CoglPipeline. For now the new pipeline API is marked as experimental and public headers continue to talk about materials not pipelines. The CoglMaterial API is now maintained in terms of the cogl_pipeline API internally. Currently this API is targeting Cogl 2.0 so we will have time to integrate it properly with other upcoming Cogl 2.0 work. The basic reasons for the rename are: - That the term "material" implies to many people that they are constrained to fragment processing; perhaps as some kind of high-level texture abstraction. - In Clutter they get exposed by ClutterTexture actors which may be re-inforcing this misconception. - When comparing how other frameworks use the term material, a material sometimes describes a multi-pass fragment processing technique which isn't the case in Cogl. - In code, "CoglPipeline" will hopefully be a much more self documenting summary of what these objects represent; a full GPU pipeline configuration including, for example, vertex processing, fragment processing and blending. - When considering the API documentation story, at some point we need a document introducing developers to how the "GPU pipeline" works so it should become intuitive that CoglPipeline maps back to that description of the GPU pipeline. - This is consistent in terminology and concept to OpenGL 4's new pipeline object which is a container for program objects. Note: The cogl-material.[ch] files have been renamed to cogl-material-compat.[ch] because otherwise git doesn't seem to treat the change as a moving the old cogl-material.c->cogl-pipeline.c and so we loose all our git-blame history.
2010-10-27 13:54:57 -04:00
* texture unit when flushing CoglPipelineLayers that is typically
material: split the texture unit management out In general cogl-material.c has become far to large to manage in one source file. As one of the ways to try and break it down this patch starts to move some of lower level texture unit state management out into cogl-material-opengl.c. The naming is such because the plan is to follow up and migrate the very GL specific state flushing code into the same file.
2010-07-09 21:53:38 -04:00
* used to optimize subsequent re-flushing of the same layer.
*
* The low level members are at the top, and the high level members
* start with the .layer member.
*/
typedef struct _CoglTextureUnit
{
/* The base 0 texture unit index which can be used with
* glActiveTexture () */
int index;
cogl-pipeline: Move texture enabling/disabling to fixed fragend Previously enabling and disabling textures was done whatever the backend in cogl-pipeline-opengl. However enabling and disabling texture targets only has any meaning if no fragment shaders are being used so this patch moves the code to cogl-pipeline-fragend-fixed. The GLES2 wrapper has also been changed to ignore enabledness when deciding whether to update texture coordinate attribute pointers.
2010-11-30 07:48:27 -05:00
/* The GL target currently glEnabled or 0 if nothing is
* enabled. This is only used by the fixed pipeline fragend */
GLenum enabled_gl_target;
material: split the texture unit management out In general cogl-material.c has become far to large to manage in one source file. As one of the ways to try and break it down this patch starts to move some of lower level texture unit state management out into cogl-material-opengl.c. The naming is such because the plan is to follow up and migrate the very GL specific state flushing code into the same file.
2010-07-09 21:53:38 -04:00
/* The raw GL texture object name for which we called glBindTexture when
* we flushed the last layer. (NB: The CoglTexture associated
* with a layer may represent more than one GL texture) */
GLuint gl_texture;
cogl-pipeline: Move texture enabling/disabling to fixed fragend Previously enabling and disabling textures was done whatever the backend in cogl-pipeline-opengl. However enabling and disabling texture targets only has any meaning if no fragment shaders are being used so this patch moves the code to cogl-pipeline-fragend-fixed. The GLES2 wrapper has also been changed to ignore enabledness when deciding whether to update texture coordinate attribute pointers.
2010-11-30 07:48:27 -05:00
/* The target of the GL texture object. This is just used so that we
* can quickly determine the intended target to flush when
* dirty_gl_texture == TRUE */
GLenum gl_target;
material: split the texture unit management out In general cogl-material.c has become far to large to manage in one source file. As one of the ways to try and break it down this patch starts to move some of lower level texture unit state management out into cogl-material-opengl.c. The naming is such because the plan is to follow up and migrate the very GL specific state flushing code into the same file.
2010-07-09 21:53:38 -04:00
/* Foreign textures are those not created or deleted by Cogl. If we ever
* call glBindTexture for a foreign texture then the next time we are
* asked to glBindTexture we can't try and optimize a redundant state
* change because we don't know if the original texture name was deleted
* and now we are being asked to bind a recycled name. */
Switch use of primitive glib types to c99 equivalents The coding style has for a long time said to avoid using redundant glib data types such as gint or gchar etc because we feel that they make the code look unnecessarily foreign to developers coming from outside of the Gnome developer community. Note: When we tried to find the historical rationale for the types we just found that they were apparently only added for consistent syntax highlighting which didn't seem that compelling. Up until now we have been continuing to use some of the platform specific type such as gint{8,16,32,64} and gsize but this patch switches us over to using the standard c99 equivalents instead so we can further ensure that our code looks familiar to the widest range of C developers who might potentially contribute to Cogl. So instead of using the gint{8,16,32,64} and guint{8,16,32,64} types this switches all Cogl code to instead use the int{8,16,32,64}_t and uint{8,16,32,64}_t c99 types instead. Instead of gsize we now use size_t For now we are not going to use the c99 _Bool type and instead we have introduced a new CoglBool type to use instead of gboolean. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit 5967dad2400d32ca6319cef6cb572e81bf2c15f0)
2012-04-16 16:56:40 -04:00
CoglBool is_foreign;
material: split the texture unit management out In general cogl-material.c has become far to large to manage in one source file. As one of the ways to try and break it down this patch starts to move some of lower level texture unit state management out into cogl-material-opengl.c. The naming is such because the plan is to follow up and migrate the very GL specific state flushing code into the same file.
2010-07-09 21:53:38 -04:00
/* We have many components in Cogl that need to temporarily bind arbitrary
* textures e.g. to query texture object parameters and since we don't
* want that to result in too much redundant reflushing of layer state
* when all that's needed is to re-bind the layer's gl_texture we use this
* to track when the unit->gl_texture state is out of sync with the GL
* texture object really bound too (GL_TEXTURE0+unit->index).
*
cogl: rename CoglMaterial -> CoglPipeline This applies an API naming change that's been deliberated over for a while now which is to rename CoglMaterial to CoglPipeline. For now the new pipeline API is marked as experimental and public headers continue to talk about materials not pipelines. The CoglMaterial API is now maintained in terms of the cogl_pipeline API internally. Currently this API is targeting Cogl 2.0 so we will have time to integrate it properly with other upcoming Cogl 2.0 work. The basic reasons for the rename are: - That the term "material" implies to many people that they are constrained to fragment processing; perhaps as some kind of high-level texture abstraction. - In Clutter they get exposed by ClutterTexture actors which may be re-inforcing this misconception. - When comparing how other frameworks use the term material, a material sometimes describes a multi-pass fragment processing technique which isn't the case in Cogl. - In code, "CoglPipeline" will hopefully be a much more self documenting summary of what these objects represent; a full GPU pipeline configuration including, for example, vertex processing, fragment processing and blending. - When considering the API documentation story, at some point we need a document introducing developers to how the "GPU pipeline" works so it should become intuitive that CoglPipeline maps back to that description of the GPU pipeline. - This is consistent in terminology and concept to OpenGL 4's new pipeline object which is a container for program objects. Note: The cogl-material.[ch] files have been renamed to cogl-material-compat.[ch] because otherwise git doesn't seem to treat the change as a moving the old cogl-material.c->cogl-pipeline.c and so we loose all our git-blame history.
2010-10-27 13:54:57 -04:00
* XXX: as a further optimization cogl-pipeline.c uses a convention
material: split the texture unit management out In general cogl-material.c has become far to large to manage in one source file. As one of the ways to try and break it down this patch starts to move some of lower level texture unit state management out into cogl-material-opengl.c. The naming is such because the plan is to follow up and migrate the very GL specific state flushing code into the same file.
2010-07-09 21:53:38 -04:00
* of always using texture unit 1 for these transient bindings so we
* can assume this is only ever TRUE for unit 1.
*/
Switch use of primitive glib types to c99 equivalents The coding style has for a long time said to avoid using redundant glib data types such as gint or gchar etc because we feel that they make the code look unnecessarily foreign to developers coming from outside of the Gnome developer community. Note: When we tried to find the historical rationale for the types we just found that they were apparently only added for consistent syntax highlighting which didn't seem that compelling. Up until now we have been continuing to use some of the platform specific type such as gint{8,16,32,64} and gsize but this patch switches us over to using the standard c99 equivalents instead so we can further ensure that our code looks familiar to the widest range of C developers who might potentially contribute to Cogl. So instead of using the gint{8,16,32,64} and guint{8,16,32,64} types this switches all Cogl code to instead use the int{8,16,32,64}_t and uint{8,16,32,64}_t c99 types instead. Instead of gsize we now use size_t For now we are not going to use the c99 _Bool type and instead we have introduced a new CoglBool type to use instead of gboolean. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit 5967dad2400d32ca6319cef6cb572e81bf2c15f0)
2012-04-16 16:56:40 -04:00
CoglBool dirty_gl_texture;
material: split the texture unit management out In general cogl-material.c has become far to large to manage in one source file. As one of the ways to try and break it down this patch starts to move some of lower level texture unit state management out into cogl-material-opengl.c. The naming is such because the plan is to follow up and migrate the very GL specific state flushing code into the same file.
2010-07-09 21:53:38 -04:00
/* A matrix stack giving us the means to associate a texture
* transform matrix with the texture unit. */
CoglMatrixStack *matrix_stack;
/*
* Higher level layer state associated with the unit...
*/
cogl: rename CoglMaterial -> CoglPipeline This applies an API naming change that's been deliberated over for a while now which is to rename CoglMaterial to CoglPipeline. For now the new pipeline API is marked as experimental and public headers continue to talk about materials not pipelines. The CoglMaterial API is now maintained in terms of the cogl_pipeline API internally. Currently this API is targeting Cogl 2.0 so we will have time to integrate it properly with other upcoming Cogl 2.0 work. The basic reasons for the rename are: - That the term "material" implies to many people that they are constrained to fragment processing; perhaps as some kind of high-level texture abstraction. - In Clutter they get exposed by ClutterTexture actors which may be re-inforcing this misconception. - When comparing how other frameworks use the term material, a material sometimes describes a multi-pass fragment processing technique which isn't the case in Cogl. - In code, "CoglPipeline" will hopefully be a much more self documenting summary of what these objects represent; a full GPU pipeline configuration including, for example, vertex processing, fragment processing and blending. - When considering the API documentation story, at some point we need a document introducing developers to how the "GPU pipeline" works so it should become intuitive that CoglPipeline maps back to that description of the GPU pipeline. - This is consistent in terminology and concept to OpenGL 4's new pipeline object which is a container for program objects. Note: The cogl-material.[ch] files have been renamed to cogl-material-compat.[ch] because otherwise git doesn't seem to treat the change as a moving the old cogl-material.c->cogl-pipeline.c and so we loose all our git-blame history.
2010-10-27 13:54:57 -04:00
/* The CoglPipelineLayer whos state was flushed to update this
material: split the texture unit management out In general cogl-material.c has become far to large to manage in one source file. As one of the ways to try and break it down this patch starts to move some of lower level texture unit state management out into cogl-material-opengl.c. The naming is such because the plan is to follow up and migrate the very GL specific state flushing code into the same file.
2010-07-09 21:53:38 -04:00
* texture unit last.
*
* This will be set to NULL if the layer is modified or freed which
* means when we come to flush a layer; if this pointer is still
* valid and == to the layer being flushed we don't need to update
* any texture unit state. */
cogl: rename CoglMaterial -> CoglPipeline This applies an API naming change that's been deliberated over for a while now which is to rename CoglMaterial to CoglPipeline. For now the new pipeline API is marked as experimental and public headers continue to talk about materials not pipelines. The CoglMaterial API is now maintained in terms of the cogl_pipeline API internally. Currently this API is targeting Cogl 2.0 so we will have time to integrate it properly with other upcoming Cogl 2.0 work. The basic reasons for the rename are: - That the term "material" implies to many people that they are constrained to fragment processing; perhaps as some kind of high-level texture abstraction. - In Clutter they get exposed by ClutterTexture actors which may be re-inforcing this misconception. - When comparing how other frameworks use the term material, a material sometimes describes a multi-pass fragment processing technique which isn't the case in Cogl. - In code, "CoglPipeline" will hopefully be a much more self documenting summary of what these objects represent; a full GPU pipeline configuration including, for example, vertex processing, fragment processing and blending. - When considering the API documentation story, at some point we need a document introducing developers to how the "GPU pipeline" works so it should become intuitive that CoglPipeline maps back to that description of the GPU pipeline. - This is consistent in terminology and concept to OpenGL 4's new pipeline object which is a container for program objects. Note: The cogl-material.[ch] files have been renamed to cogl-material-compat.[ch] because otherwise git doesn't seem to treat the change as a moving the old cogl-material.c->cogl-pipeline.c and so we loose all our git-blame history.
2010-10-27 13:54:57 -04:00
CoglPipelineLayer *layer;
material: split the texture unit management out In general cogl-material.c has become far to large to manage in one source file. As one of the ways to try and break it down this patch starts to move some of lower level texture unit state management out into cogl-material-opengl.c. The naming is such because the plan is to follow up and migrate the very GL specific state flushing code into the same file.
2010-07-09 21:53:38 -04:00
/* To help minimize the state changes required we track the
* difference flags associated with the layer whos state was last
* flushed to update this texture unit.
*
* Note: we track this explicitly because .layer may get invalidated
* if that layer is modified or deleted. Even if the layer is
* invalidated though these flags can be used to optimize the state
* flush of the next layer
*/
unsigned long layer_changes_since_flush;
/* Whenever a CoglTexture's internal GL texture storage changes
cogl: rename CoglMaterial -> CoglPipeline This applies an API naming change that's been deliberated over for a while now which is to rename CoglMaterial to CoglPipeline. For now the new pipeline API is marked as experimental and public headers continue to talk about materials not pipelines. The CoglMaterial API is now maintained in terms of the cogl_pipeline API internally. Currently this API is targeting Cogl 2.0 so we will have time to integrate it properly with other upcoming Cogl 2.0 work. The basic reasons for the rename are: - That the term "material" implies to many people that they are constrained to fragment processing; perhaps as some kind of high-level texture abstraction. - In Clutter they get exposed by ClutterTexture actors which may be re-inforcing this misconception. - When comparing how other frameworks use the term material, a material sometimes describes a multi-pass fragment processing technique which isn't the case in Cogl. - In code, "CoglPipeline" will hopefully be a much more self documenting summary of what these objects represent; a full GPU pipeline configuration including, for example, vertex processing, fragment processing and blending. - When considering the API documentation story, at some point we need a document introducing developers to how the "GPU pipeline" works so it should become intuitive that CoglPipeline maps back to that description of the GPU pipeline. - This is consistent in terminology and concept to OpenGL 4's new pipeline object which is a container for program objects. Note: The cogl-material.[ch] files have been renamed to cogl-material-compat.[ch] because otherwise git doesn't seem to treat the change as a moving the old cogl-material.c->cogl-pipeline.c and so we loose all our git-blame history.
2010-10-27 13:54:57 -04:00
* cogl-pipeline.c is notified with a call to
* _cogl_pipeline_texture_storage_change_notify which inturn sets
material: split the texture unit management out In general cogl-material.c has become far to large to manage in one source file. As one of the ways to try and break it down this patch starts to move some of lower level texture unit state management out into cogl-material-opengl.c. The naming is such because the plan is to follow up and migrate the very GL specific state flushing code into the same file.
2010-07-09 21:53:38 -04:00
* this to TRUE for each texture unit that it is currently bound
cogl: rename CoglMaterial -> CoglPipeline This applies an API naming change that's been deliberated over for a while now which is to rename CoglMaterial to CoglPipeline. For now the new pipeline API is marked as experimental and public headers continue to talk about materials not pipelines. The CoglMaterial API is now maintained in terms of the cogl_pipeline API internally. Currently this API is targeting Cogl 2.0 so we will have time to integrate it properly with other upcoming Cogl 2.0 work. The basic reasons for the rename are: - That the term "material" implies to many people that they are constrained to fragment processing; perhaps as some kind of high-level texture abstraction. - In Clutter they get exposed by ClutterTexture actors which may be re-inforcing this misconception. - When comparing how other frameworks use the term material, a material sometimes describes a multi-pass fragment processing technique which isn't the case in Cogl. - In code, "CoglPipeline" will hopefully be a much more self documenting summary of what these objects represent; a full GPU pipeline configuration including, for example, vertex processing, fragment processing and blending. - When considering the API documentation story, at some point we need a document introducing developers to how the "GPU pipeline" works so it should become intuitive that CoglPipeline maps back to that description of the GPU pipeline. - This is consistent in terminology and concept to OpenGL 4's new pipeline object which is a container for program objects. Note: The cogl-material.[ch] files have been renamed to cogl-material-compat.[ch] because otherwise git doesn't seem to treat the change as a moving the old cogl-material.c->cogl-pipeline.c and so we loose all our git-blame history.
2010-10-27 13:54:57 -04:00
* too. When we later come to flush some pipeline state then we will
material: split the texture unit management out In general cogl-material.c has become far to large to manage in one source file. As one of the ways to try and break it down this patch starts to move some of lower level texture unit state management out into cogl-material-opengl.c. The naming is such because the plan is to follow up and migrate the very GL specific state flushing code into the same file.
2010-07-09 21:53:38 -04:00
* always check this to potentially force an update of the texture
cogl: rename CoglMaterial -> CoglPipeline This applies an API naming change that's been deliberated over for a while now which is to rename CoglMaterial to CoglPipeline. For now the new pipeline API is marked as experimental and public headers continue to talk about materials not pipelines. The CoglMaterial API is now maintained in terms of the cogl_pipeline API internally. Currently this API is targeting Cogl 2.0 so we will have time to integrate it properly with other upcoming Cogl 2.0 work. The basic reasons for the rename are: - That the term "material" implies to many people that they are constrained to fragment processing; perhaps as some kind of high-level texture abstraction. - In Clutter they get exposed by ClutterTexture actors which may be re-inforcing this misconception. - When comparing how other frameworks use the term material, a material sometimes describes a multi-pass fragment processing technique which isn't the case in Cogl. - In code, "CoglPipeline" will hopefully be a much more self documenting summary of what these objects represent; a full GPU pipeline configuration including, for example, vertex processing, fragment processing and blending. - When considering the API documentation story, at some point we need a document introducing developers to how the "GPU pipeline" works so it should become intuitive that CoglPipeline maps back to that description of the GPU pipeline. - This is consistent in terminology and concept to OpenGL 4's new pipeline object which is a container for program objects. Note: The cogl-material.[ch] files have been renamed to cogl-material-compat.[ch] because otherwise git doesn't seem to treat the change as a moving the old cogl-material.c->cogl-pipeline.c and so we loose all our git-blame history.
2010-10-27 13:54:57 -04:00
* state even if the pipeline hasn't changed. */
Switch use of primitive glib types to c99 equivalents The coding style has for a long time said to avoid using redundant glib data types such as gint or gchar etc because we feel that they make the code look unnecessarily foreign to developers coming from outside of the Gnome developer community. Note: When we tried to find the historical rationale for the types we just found that they were apparently only added for consistent syntax highlighting which didn't seem that compelling. Up until now we have been continuing to use some of the platform specific type such as gint{8,16,32,64} and gsize but this patch switches us over to using the standard c99 equivalents instead so we can further ensure that our code looks familiar to the widest range of C developers who might potentially contribute to Cogl. So instead of using the gint{8,16,32,64} and guint{8,16,32,64} types this switches all Cogl code to instead use the int{8,16,32,64}_t and uint{8,16,32,64}_t c99 types instead. Instead of gsize we now use size_t For now we are not going to use the c99 _Bool type and instead we have introduced a new CoglBool type to use instead of gboolean. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit 5967dad2400d32ca6319cef6cb572e81bf2c15f0)
2012-04-16 16:56:40 -04:00
CoglBool texture_storage_changed;
material: split the texture unit management out In general cogl-material.c has become far to large to manage in one source file. As one of the ways to try and break it down this patch starts to move some of lower level texture unit state management out into cogl-material-opengl.c. The naming is such because the plan is to follow up and migrate the very GL specific state flushing code into the same file.
2010-07-09 21:53:38 -04:00
} CoglTextureUnit;
CoglTextureUnit *
_cogl_get_texture_unit (int index_);
void
_cogl_destroy_texture_units (void);
void
_cogl_set_active_texture_unit (int unit_index);
void
_cogl_bind_gl_texture_transient (GLenum gl_target,
GLuint gl_texture,
Switch use of primitive glib types to c99 equivalents The coding style has for a long time said to avoid using redundant glib data types such as gint or gchar etc because we feel that they make the code look unnecessarily foreign to developers coming from outside of the Gnome developer community. Note: When we tried to find the historical rationale for the types we just found that they were apparently only added for consistent syntax highlighting which didn't seem that compelling. Up until now we have been continuing to use some of the platform specific type such as gint{8,16,32,64} and gsize but this patch switches us over to using the standard c99 equivalents instead so we can further ensure that our code looks familiar to the widest range of C developers who might potentially contribute to Cogl. So instead of using the gint{8,16,32,64} and guint{8,16,32,64} types this switches all Cogl code to instead use the int{8,16,32,64}_t and uint{8,16,32,64}_t c99 types instead. Instead of gsize we now use size_t For now we are not going to use the c99 _Bool type and instead we have introduced a new CoglBool type to use instead of gboolean. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit 5967dad2400d32ca6319cef6cb572e81bf2c15f0)
2012-04-16 16:56:40 -04:00
CoglBool is_foreign);
material: split the texture unit management out In general cogl-material.c has become far to large to manage in one source file. As one of the ways to try and break it down this patch starts to move some of lower level texture unit state management out into cogl-material-opengl.c. The naming is such because the plan is to follow up and migrate the very GL specific state flushing code into the same file.
2010-07-09 21:53:38 -04:00
void
_cogl_delete_gl_texture (GLuint gl_texture);
material: splits out all the state flushing code This moves the code supporting _cogl_material_flush_gl_state into cogl-material-opengl.c as part of an effort to reduce the size of cogl-material.c to keep it manageable.
2010-07-09 22:40:47 -04:00
void
pipeline: improve real_blend_enable checks Since _cogl_pipeline_update_blend_enable() can sometimes show up quite high in profiles; instead of calling _cogl_pipeline_update_blend_enable() whenever we change pipeline state that may affect blending we now just set a dirty flag and when we flush a pipeline we check this dirty flag and lazily calculate whether blender really needs to be enabled if it's set. Since it turns out we were too optimistic in assuming most GL drivers would recognize blending with ADD(src,0) is equivalent to disabling GL_BLEND we now check this case ourselves so we can always explicitly disable GL_BLEND if we know we don't need blending. This introduces the idea of an 'unknown_color_alpha' boolean to the pipeline flush code which is set whenever we can't guarantee that the color attribute is opaque. For example this is set whenever a user specifies a color attribute with 4 components when drawing a primitive. This boolean needs to be cached along with every pipeline because pipeline::real_blend_enabled depends on this and so we need to also call _cogl_pipeline_update_blend_enable() if the status of this changes. Incidentally with this patch we now no longer ever use _cogl_pipeline_set_blend_enable() internally. For now the internal api hasn't been removed though since we might want to consider re-purposing it as a public api since it will now not conflict with our own internal state tracking and could provide a more convenient way to disable blending than setting a blend string. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit ab2ae18f3207514c91fa6fd9f2d3f2ed93a86497)
2013-05-16 10:19:30 -04:00
_cogl_pipeline_flush_gl_state (CoglContext *context,
CoglPipeline *pipeline,
Re-design the matrix stack using a graph of ops This re-designs the matrix stack so we now keep track of each separate operation such as rotating, scaling, translating and multiplying as immutable, ref-counted nodes in a graph. Being a "graph" here means that different transformations composed of a sequence of linked operation nodes may share nodes. The first node in a matrix-stack is always a LOAD_IDENTITY operation. As an example consider if an application where to draw three rectangles A, B and C something like this: cogl_framebuffer_scale (fb, 2, 2, 2); cogl_framebuffer_push_matrix(fb); cogl_framebuffer_translate (fb, 10, 0, 0); cogl_framebuffer_push_matrix(fb); cogl_framebuffer_rotate (fb, 45, 0, 0, 1); cogl_framebuffer_draw_rectangle (...); /* A */ cogl_framebuffer_pop_matrix(fb); cogl_framebuffer_draw_rectangle (...); /* B */ cogl_framebuffer_pop_matrix(fb); cogl_framebuffer_push_matrix(fb); cogl_framebuffer_set_modelview_matrix (fb, &mv); cogl_framebuffer_draw_rectangle (...); /* C */ cogl_framebuffer_pop_matrix(fb); That would result in a graph of nodes like this: LOAD_IDENTITY | SCALE / \ SAVE LOAD | | TRANSLATE RECTANGLE(C) | \ SAVE RECTANGLE(B) | ROTATE | RECTANGLE(A) Each push adds a SAVE operation which serves as a marker to rewind too when a corresponding pop is issued and also each SAVE node may also store a cached matrix representing the composition of all its ancestor nodes. This means if we repeatedly need to resolve a real CoglMatrix for a given node then we don't need to repeat the composition. Some advantages of this design are: - A single pointer to any node in the graph can now represent a complete, immutable transformation that can be logged for example into a journal. Previously we were storing a full CoglMatrix in each journal entry which is 16 floats for the matrix itself as well as space for flags and another 16 floats for possibly storing a cache of the inverse. This means that we significantly reduce the size of the journal when drawing lots of primitives and we also avoid copying over 128 bytes per entry. - It becomes much cheaper to check for equality. In cases where some (unlikely) false negatives are allowed simply comparing the pointers of two matrix stack graph entries is enough. Previously we would use memcmp() to compare matrices. - It becomes easier to do comparisons of transformations. By looking for the common ancestry between nodes we can determine the operations that differentiate the transforms and use those to gain a high level understanding of the differences. For example we use this in the journal to be able to efficiently determine when two rectangle transforms only differ by some translation so that we can perform software clipping. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit f75aee93f6b293ca7a7babbd8fcc326ee6bf7aef)
2012-02-20 10:59:48 -05:00
CoglFramebuffer *framebuffer,
pipeline: improve real_blend_enable checks Since _cogl_pipeline_update_blend_enable() can sometimes show up quite high in profiles; instead of calling _cogl_pipeline_update_blend_enable() whenever we change pipeline state that may affect blending we now just set a dirty flag and when we flush a pipeline we check this dirty flag and lazily calculate whether blender really needs to be enabled if it's set. Since it turns out we were too optimistic in assuming most GL drivers would recognize blending with ADD(src,0) is equivalent to disabling GL_BLEND we now check this case ourselves so we can always explicitly disable GL_BLEND if we know we don't need blending. This introduces the idea of an 'unknown_color_alpha' boolean to the pipeline flush code which is set whenever we can't guarantee that the color attribute is opaque. For example this is set whenever a user specifies a color attribute with 4 components when drawing a primitive. This boolean needs to be cached along with every pipeline because pipeline::real_blend_enabled depends on this and so we need to also call _cogl_pipeline_update_blend_enable() if the status of this changes. Incidentally with this patch we now no longer ever use _cogl_pipeline_set_blend_enable() internally. For now the internal api hasn't been removed though since we might want to consider re-purposing it as a public api since it will now not conflict with our own internal state tracking and could provide a more convenient way to disable blending than setting a blend string. Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit ab2ae18f3207514c91fa6fd9f2d3f2ed93a86497)
2013-05-16 10:19:30 -04:00
CoglBool skip_gl_state,
CoglBool unknown_color_alpha);
material: splits out all the state flushing code This moves the code supporting _cogl_material_flush_gl_state into cogl-material-opengl.c as part of an effort to reduce the size of cogl-material.c to keep it manageable.
2010-07-09 22:40:47 -04:00
cogl: rename CoglMaterial -> CoglPipeline This applies an API naming change that's been deliberated over for a while now which is to rename CoglMaterial to CoglPipeline. For now the new pipeline API is marked as experimental and public headers continue to talk about materials not pipelines. The CoglMaterial API is now maintained in terms of the cogl_pipeline API internally. Currently this API is targeting Cogl 2.0 so we will have time to integrate it properly with other upcoming Cogl 2.0 work. The basic reasons for the rename are: - That the term "material" implies to many people that they are constrained to fragment processing; perhaps as some kind of high-level texture abstraction. - In Clutter they get exposed by ClutterTexture actors which may be re-inforcing this misconception. - When comparing how other frameworks use the term material, a material sometimes describes a multi-pass fragment processing technique which isn't the case in Cogl. - In code, "CoglPipeline" will hopefully be a much more self documenting summary of what these objects represent; a full GPU pipeline configuration including, for example, vertex processing, fragment processing and blending. - When considering the API documentation story, at some point we need a document introducing developers to how the "GPU pipeline" works so it should become intuitive that CoglPipeline maps back to that description of the GPU pipeline. - This is consistent in terminology and concept to OpenGL 4's new pipeline object which is a container for program objects. Note: The cogl-material.[ch] files have been renamed to cogl-material-compat.[ch] because otherwise git doesn't seem to treat the change as a moving the old cogl-material.c->cogl-pipeline.c and so we loose all our git-blame history.
2010-10-27 13:54:57 -04:00
#endif /* __COGL_PIPELINE_OPENGL_PRIVATE_H */
material: split the texture unit management out In general cogl-material.c has become far to large to manage in one source file. As one of the ways to try and break it down this patch starts to move some of lower level texture unit state management out into cogl-material-opengl.c. The naming is such because the plan is to follow up and migrate the very GL specific state flushing code into the same file.
2010-07-09 21:53:38 -04:00
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