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mutter/cogl/cogl-framebuffer-private.h

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[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009 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
Remove mentions of the FSF address Since using addresses that might change is something that finally the FSF acknowledge as a plausible scenario (after changing address twice), the license blurb in the source files should use the URI for getting the license in case the library did not come with it. Not that URIs cannot possibly change, but at least it's easier to set up a redirection at the same place. As a side note: this commit closes the oldes bug in Clutter's bug report tool. http://bugzilla.openedhand.com/show_bug.cgi?id=521
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
*/
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
#ifndef __COGL_FRAMEBUFFER_PRIVATE_H
#define __COGL_FRAMEBUFFER_PRIVATE_H
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
#include "cogl-handle.h"
#include "cogl-matrix-stack.h"
#include "cogl-clip-stack.h"
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
typedef enum _CoglFramebufferType {
COGL_FRAMEBUFFER_TYPE_ONSCREEN,
COGL_FRAMEBUFFER_TYPE_OFFSCREEN
} CoglFramebufferType;
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
typedef struct
{
CoglHandleObject _parent;
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
CoglFramebufferType type;
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
int width;
int height;
CoglMatrixStack *modelview_stack;
CoglMatrixStack *projection_stack;
int viewport_x;
int viewport_y;
int viewport_width;
int viewport_height;
CoglClipStackState clip_state;
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
} CoglFramebuffer;
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
#define COGL_FRAMEBUFFER(X) ((CoglFramebuffer *)(X))
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
typedef struct _CoglOffscreen
{
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
CoglFramebuffer _parent;
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
GLuint fbo_handle;
cogl: Support multiple fallbacks in cogl_offscreen_new_to_texture() The Intel drivers in Mesa 7.6 (and possibly earlier versions) don't support creating FBOs with a stencil buffer but without a depth buffer. This reworks framebuffer allocation so that we try a number of fallback options before failing. The options we try in order are: - the same options that were sucessful last time if available - combined depth and stencil - separate depth and stencil - just stencil, no depth - just depth, no stencil - neither depth or stencil
2009-11-30 15:04:41 -05:00
GSList *renderbuffers;
framebuffers: cogl_offscreen_new_to_texture should take a ref on the texture We weren't taking a reference on the texture to be used as the color buffer for offscreen rendering, so it was possible to free the texture leaving the framebuffer in an inconsistent state.
2009-11-25 09:26:32 -05:00
CoglHandle texture;
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
} CoglOffscreen;
#define COGL_OFFSCREEN(X) ((CoglOffscreen *)(X))
typedef struct _CoglOnscreen
{
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
CoglFramebuffer _parent;
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
} CoglOnscreen;
#define COGL_ONSCREEN(X) ((CoglOnscreen *)(X))
void
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
_cogl_framebuffer_state_init (void);
[draw-buffer] Adds cogl_draw_buffer_get_{width,height} API Simply adds missing API to query the width and height of any Cogl draw buffer.
2009-10-21 18:20:44 -04:00
int
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
_cogl_framebuffer_get_width (CoglHandle handle);
[draw-buffer] Adds cogl_draw_buffer_get_{width,height} API Simply adds missing API to query the width and height of any Cogl draw buffer.
2009-10-21 18:20:44 -04:00
int
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
_cogl_framebuffer_get_height (CoglHandle handle);
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
CoglClipStackState *
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
_cogl_framebuffer_get_clip_state (CoglHandle handle);
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
void
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
_cogl_framebuffer_set_viewport (CoglHandle handle,
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
int x,
int y,
int width,
int height);
int
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
_cogl_framebuffer_get_viewport_x (CoglHandle handle);
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
int
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
_cogl_framebuffer_get_viewport_y (CoglHandle handle);
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
int
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
_cogl_framebuffer_get_viewport_width (CoglHandle handle);
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
int
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
_cogl_framebuffer_get_viewport_height (CoglHandle handle);
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
void
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
_cogl_framebuffer_get_viewport4fv (CoglHandle handle, int *viewport);
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
CoglMatrixStack *
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
_cogl_framebuffer_get_modelview_stack (CoglHandle handle);
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
CoglMatrixStack *
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
_cogl_framebuffer_get_projection_stack (CoglHandle handle);
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
typedef enum _CoglFramebufferFlushFlags
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
{
/* XXX: When using this, that imples you are going to manually load the
* modelview matrix (via glLoadMatrix). _cogl_matrix_stack_flush_to_gl wont
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
* be called for framebuffer->modelview_stack, and the modelview_stack will
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
* also be marked as dirty. */
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
COGL_FRAMEBUFFER_FLUSH_SKIP_MODELVIEW = 1L<<0,
} CoglFramebufferFlushFlags;
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
void
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
_cogl_framebuffer_flush_state (CoglHandle handle,
CoglFramebufferFlushFlags flags);
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
CoglHandle
_cogl_onscreen_new (void);
CoglHandle
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
_cogl_get_framebuffer (void);
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
GSList *
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
_cogl_create_framebuffer_stack (void);
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
void
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
_cogl_free_framebuffer_stack (GSList *stack);
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
cogl: deprecate cogl_draw_buffer API and replace with a cogl_framebuffer API cogl_push_draw_buffer, cogl_set_draw_buffer and cogl_pop_draw_buffer are now deprecated and new code should use the new cogl_framebuffer_* API instead. Code that previously did: cogl_push_draw_buffer (); cogl_set_draw_buffer (COGL_OFFSCREEN_BUFFER, buffer); /* draw */ cogl_pop_draw_buffer (); should now be re-written as: cogl_push_framebuffer (buffer); /* draw */ cogl_pop_framebuffer (); As can be seen from the example above the rename has been used as an opportunity to remove the redundant target argument from cogl_set_draw_buffer; it now only takes one call to redirect to an offscreen buffer, and finally the term framebuffer may be a bit more familiar to anyone coming from an OpenGL background.
2009-11-26 14:06:35 -05:00
#endif /* __COGL_FRAMEBUFFER_PRIVATE_H */
[draw-buffers] First pass at overhauling Cogl's framebuffer management Cogl's support for offscreen rendering was originally written just to support the clutter_texture_new_from_actor API and due to lack of documentation and several confusing - non orthogonal - side effects of using the API it wasn't really possible to use directly. This commit does a number of things: - It removes {gl,gles}/cogl-fbo.{c,h} and adds shared cogl-draw-buffer.{c,h} files instead which should be easier to maintain. - internally CoglFbo objects are now called CoglDrawBuffers. A CoglDrawBuffer is an abstract base class that is inherited from to implement CoglOnscreen and CoglOffscreen draw buffers. CoglOffscreen draw buffers will initially be used to support the cogl_offscreen_new_to_texture API, and CoglOnscreen draw buffers will start to be used internally to represent windows as we aim to migrate some of Clutter's backend code to Cogl. - It makes draw buffer objects the owners of the following state: - viewport - projection matrix stack - modelview matrix stack - clip state (This means when you switch between draw buffers you will automatically be switching to their associated viewport, matrix and clip state) Aside from hopefully making cogl_offscreen_new_to_texture be more useful short term by having simpler and well defined semantics for cogl_set_draw_buffer, as mentioned above this is the first step for a couple of other things: - Its a step toward moving ownership for windows down from Clutter backends into Cogl, by (internally at least) introducing the CoglOnscreen draw buffer. Note: the plan is that cogl_set_draw_buffer will accept on or offscreen draw buffer handles, and the "target" argument will become redundant since we will instead query the type of the given draw buffer handle. - Because we have a common type for on and offscreen framebuffers we can provide a unified API for framebuffer management. Things like: - blitting between buffers - managing ancillary buffers (e.g. attaching depth and stencil buffers) - size requisition - clearing
2009-09-25 09:34:34 -04:00
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