93d0de1d9a
Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit a99512e5798e48ffa3a9a1a7eb98bc55647ee1b6)
117 lines
3.4 KiB
C
117 lines
3.4 KiB
C
/*
|
|
* Cogl
|
|
*
|
|
* An object oriented GL/GLES Abstraction/Utility Layer
|
|
*
|
|
* Copyright (C) 2007,2008,2009,2012 Intel Corporation.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*
|
|
*/
|
|
|
|
#if !defined(__COGL_H_INSIDE__) && !defined(COGL_COMPILATION)
|
|
#error "Only <cogl/cogl.h> can be included directly."
|
|
#endif
|
|
|
|
#ifndef __COGL_OFFSCREEN_H__
|
|
#define __COGL_OFFSCREEN_H__
|
|
|
|
#include <cogl/cogl-types.h>
|
|
#include <cogl/cogl-texture.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
/**
|
|
* SECTION:cogl-offscreen
|
|
* @short_description: Fuctions for creating and manipulating offscreen
|
|
* framebuffers.
|
|
*
|
|
* Cogl allows creating and operating on offscreen framebuffers.
|
|
*/
|
|
|
|
typedef struct _CoglOffscreen CoglOffscreen;
|
|
|
|
#define COGL_OFFSCREEN(X) ((CoglOffscreen *)X)
|
|
|
|
/* Offscreen api */
|
|
|
|
/**
|
|
* cogl_offscreen_new_to_texture:
|
|
* @texture: A #CoglTexture pointer
|
|
*
|
|
* This creates an offscreen buffer object using the given @texture as the
|
|
* primary color buffer. It doesn't just initialize the contents of the
|
|
* offscreen buffer with the @texture; they are tightly bound so that
|
|
* drawing to the offscreen buffer effectivly updates the contents of the
|
|
* given texture. You don't need to destroy the offscreen buffer before
|
|
* you can use the @texture again.
|
|
*
|
|
* <note>This only works with low-level #CoglTexture types such as
|
|
* #CoglTexture2D, #CoglTexture3D and #CoglTextureRectangle, and not
|
|
* with meta-texture types such as #CoglTexture2DSliced.</note>
|
|
*
|
|
* Return value: (transfer full): a newly instantiated #CoglOffscreen
|
|
* framebuffer or %NULL if it wasn't possible to create the
|
|
* buffer.
|
|
*/
|
|
CoglOffscreen *
|
|
cogl_offscreen_new_to_texture (CoglTexture *texture);
|
|
|
|
/**
|
|
* cogl_is_offscreen:
|
|
* @object: A pointer to a #CoglObject
|
|
*
|
|
* Determines whether the given #CoglObject references an offscreen
|
|
* framebuffer object.
|
|
*
|
|
* Returns: %TRUE if @object is a #CoglOffscreen framebuffer,
|
|
* %FALSE otherwise
|
|
*/
|
|
CoglBool
|
|
cogl_is_offscreen (void *object);
|
|
|
|
#ifndef COGL_DISABLE_DEPRECATED
|
|
|
|
/**
|
|
* cogl_offscreen_ref:
|
|
* @offscreen: A pointer to a #CoglOffscreen framebuffer
|
|
*
|
|
* Increments the reference count on the @offscreen framebuffer.
|
|
*
|
|
* Return value: (transfer none): For convenience it returns the
|
|
* given @offscreen
|
|
*
|
|
* Deprecated: 1.2: cogl_object_ref() should be used in new code.
|
|
*/
|
|
void *
|
|
cogl_offscreen_ref (void *offscreen) G_GNUC_DEPRECATED;
|
|
|
|
/**
|
|
* cogl_offscreen_unref:
|
|
* @offscreen: A pointer to a #CoglOffscreen framebuffer
|
|
*
|
|
* Decreases the reference count for the @offscreen buffer and frees it when
|
|
* the count reaches 0.
|
|
*
|
|
* Deprecated: 1.2: cogl_object_unref() should be used in new code.
|
|
*/
|
|
void
|
|
cogl_offscreen_unref (void *offscreen) G_GNUC_DEPRECATED;
|
|
|
|
#endif /* COGL_DISABLE_DEPRECATED */
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __COGL_OFFSCREEN_H__ */
|