676c8a5fd4
Instead of using cogl_get_bitmasks() to query the GL machinery for the size of the color bits, we should store the values inside the CoglFramebuffer object and query them the first time we set the framebuffer as the current one. Currently, cogl_get_bitmasks() is re-implemented in terms of cogl_framebuffer_get_*_bits(). As soon as we are able to expose the CoglOnscreen framebuffer object in the public API we'll be able to deprecate cogl_get_bitmasks() altogether. http://bugzilla.openedhand.com/show_bug.cgi?id=2094
143 lines
3.6 KiB
C
143 lines
3.6 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2007,2008,2009 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*
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*/
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#ifndef __COGL_FRAMEBUFFER_PRIVATE_H
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#define __COGL_FRAMEBUFFER_PRIVATE_H
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#include "cogl-handle.h"
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#include "cogl-matrix-stack.h"
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#include "cogl-clip-state.h"
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typedef enum _CoglFramebufferType {
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COGL_FRAMEBUFFER_TYPE_ONSCREEN,
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COGL_FRAMEBUFFER_TYPE_OFFSCREEN
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} CoglFramebufferType;
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typedef struct
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{
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CoglHandleObject _parent;
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CoglFramebufferType type;
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int width;
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int height;
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CoglMatrixStack *modelview_stack;
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CoglMatrixStack *projection_stack;
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int viewport_x;
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int viewport_y;
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int viewport_width;
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int viewport_height;
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CoglClipState clip_state;
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gboolean dirty_bitmasks;
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int red_bits;
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int blue_bits;
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int green_bits;
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int alpha_bits;
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} CoglFramebuffer;
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#define COGL_FRAMEBUFFER(X) ((CoglFramebuffer *)(X))
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typedef struct _CoglOffscreen
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{
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CoglFramebuffer _parent;
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GLuint fbo_handle;
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GSList *renderbuffers;
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CoglHandle texture;
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} CoglOffscreen;
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#define COGL_OFFSCREEN(X) ((CoglOffscreen *)(X))
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typedef struct _CoglOnscreen
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{
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CoglFramebuffer _parent;
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} CoglOnscreen;
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#define COGL_ONSCREEN(X) ((CoglOnscreen *)(X))
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void
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_cogl_framebuffer_state_init (void);
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int
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_cogl_framebuffer_get_width (CoglHandle handle);
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int
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_cogl_framebuffer_get_height (CoglHandle handle);
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CoglClipState *
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_cogl_framebuffer_get_clip_state (CoglHandle handle);
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void
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_cogl_framebuffer_set_viewport (CoglHandle handle,
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int x,
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int y,
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int width,
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int height);
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int
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_cogl_framebuffer_get_viewport_x (CoglHandle handle);
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int
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_cogl_framebuffer_get_viewport_y (CoglHandle handle);
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int
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_cogl_framebuffer_get_viewport_width (CoglHandle handle);
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int
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_cogl_framebuffer_get_viewport_height (CoglHandle handle);
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void
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_cogl_framebuffer_get_viewport4fv (CoglHandle handle, int *viewport);
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CoglMatrixStack *
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_cogl_framebuffer_get_modelview_stack (CoglHandle handle);
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CoglMatrixStack *
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_cogl_framebuffer_get_projection_stack (CoglHandle handle);
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typedef enum _CoglFramebufferFlushFlags
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{
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/* XXX: When using this, that imples you are going to manually load the
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* modelview matrix (via glLoadMatrix). _cogl_matrix_stack_flush_to_gl wont
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* be called for framebuffer->modelview_stack, and the modelview_stack will
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* also be marked as dirty. */
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COGL_FRAMEBUFFER_FLUSH_SKIP_MODELVIEW = 1L<<0,
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} CoglFramebufferFlushFlags;
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void
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_cogl_framebuffer_flush_state (CoglHandle handle,
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CoglFramebufferFlushFlags flags);
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CoglHandle
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_cogl_onscreen_new (void);
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CoglHandle
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_cogl_get_framebuffer (void);
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GSList *
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_cogl_create_framebuffer_stack (void);
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void
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_cogl_free_framebuffer_stack (GSList *stack);
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#endif /* __COGL_FRAMEBUFFER_PRIVATE_H */
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