mutter/cogl/cogl-framebuffer-private.h
Robert Bragg 9690913fef 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
2010-01-11 15:32:52 +00:00

126 lines
3.5 KiB
C

/*
* 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
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __COGL_FRAMEBUFFER_PRIVATE_H
#define __COGL_FRAMEBUFFER_PRIVATE_H
#include "cogl-handle.h"
#include "cogl-matrix-stack.h"
#include "cogl-clip-stack.h"
typedef enum _CoglFramebufferType {
COGL_FRAMEBUFFER_TYPE_ONSCREEN,
COGL_FRAMEBUFFER_TYPE_OFFSCREEN
} CoglFramebufferType;
typedef struct
{
CoglHandleObject _parent;
CoglFramebufferType type;
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;
} CoglFramebuffer;
#define COGL_FRAMEBUFFER(X) ((CoglFramebuffer *)(X))
typedef struct _CoglOffscreen
{
CoglFramebuffer _parent;
GLuint fbo_handle;
GSList *renderbuffers;
CoglHandle texture;
} CoglOffscreen;
#define COGL_OFFSCREEN(X) ((CoglOffscreen *)(X))
typedef struct _CoglOnscreen
{
CoglFramebuffer _parent;
} CoglOnscreen;
#define COGL_ONSCREEN(X) ((CoglOnscreen *)(X))
void
_cogl_framebuffer_state_init (void);
int
_cogl_framebuffer_get_width (CoglHandle handle);
int
_cogl_framebuffer_get_height (CoglHandle handle);
CoglClipStackState *
_cogl_framebuffer_get_clip_state (CoglHandle handle);
void
_cogl_framebuffer_set_viewport (CoglHandle handle,
int x,
int y,
int width,
int height);
int
_cogl_framebuffer_get_viewport_x (CoglHandle handle);
int
_cogl_framebuffer_get_viewport_y (CoglHandle handle);
int
_cogl_framebuffer_get_viewport_width (CoglHandle handle);
int
_cogl_framebuffer_get_viewport_height (CoglHandle handle);
void
_cogl_framebuffer_get_viewport4fv (CoglHandle handle, int *viewport);
CoglMatrixStack *
_cogl_framebuffer_get_modelview_stack (CoglHandle handle);
CoglMatrixStack *
_cogl_framebuffer_get_projection_stack (CoglHandle handle);
typedef enum _CoglFramebufferFlushFlags
{
/* XXX: When using this, that imples you are going to manually load the
* modelview matrix (via glLoadMatrix). _cogl_matrix_stack_flush_to_gl wont
* be called for framebuffer->modelview_stack, and the modelview_stack will
* also be marked as dirty. */
COGL_FRAMEBUFFER_FLUSH_SKIP_MODELVIEW = 1L<<0,
} CoglFramebufferFlushFlags;
void
_cogl_framebuffer_flush_state (CoglHandle handle,
CoglFramebufferFlushFlags flags);
CoglHandle
_cogl_onscreen_new (void);
CoglHandle
_cogl_get_framebuffer (void);
GSList *
_cogl_create_framebuffer_stack (void);
void
_cogl_free_framebuffer_stack (GSList *stack);
#endif /* __COGL_FRAMEBUFFER_PRIVATE_H */