97 lines
3.0 KiB
C
97 lines
3.0 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.
|
|
*/
|
|
|
|
#if !defined(__COGL_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
|
|
#error "Only <cogl/cogl.h> can be included directly."
|
|
#endif
|
|
|
|
#ifndef __COGL_OFFSCREEN_H__
|
|
#define __COGL_OFFSCREEN_H__
|
|
|
|
#include <cogl/cogl-types.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
/**
|
|
* SECTION:cogl-offscreen
|
|
* @short_description: Fuctions for creating and manipulating offscreen
|
|
* frame buffer objects
|
|
*
|
|
* Cogl allows creating and operating on offscreen render targets.
|
|
*/
|
|
|
|
/* Offscreen api */
|
|
|
|
/**
|
|
* cogl_offscreen_new_to_texture:
|
|
* @handle: A CoglHandle for a Cogl texture
|
|
*
|
|
* 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 does not work with sliced Cogl textures.
|
|
*
|
|
* Returns: a #CoglHandle for the new offscreen buffer or %COGL_INVALID_HANDLE
|
|
* if it wasn't possible to create the buffer.
|
|
*/
|
|
CoglHandle cogl_offscreen_new_to_texture (CoglHandle handle);
|
|
|
|
/**
|
|
* cogl_offscreen_ref:
|
|
* @handle: A CoglHandle for an offscreen buffer
|
|
*
|
|
* Increments the reference count on the offscreen buffer.
|
|
*
|
|
* Returns: For convenience it returns the given CoglHandle
|
|
*/
|
|
CoglHandle cogl_offscreen_ref (CoglHandle handle);
|
|
|
|
/**
|
|
* cogl_is_offscreen:
|
|
* @handle: A CoglHandle for an offscreen buffer
|
|
*
|
|
* Gets whether the given handle references an existing offscreen buffer
|
|
* object.
|
|
*
|
|
* Returns: %TRUE if the handle references an offscreen buffer,
|
|
* %FALSE otherwise
|
|
*/
|
|
gboolean cogl_is_offscreen (CoglHandle handle);
|
|
|
|
/**
|
|
* cogl_offscreen_unref:
|
|
* @handle: A CoglHandle for an offscreen buffer
|
|
*
|
|
* Decreases the reference count for the offscreen buffer and frees it when
|
|
* the count reaches 0.
|
|
*/
|
|
void cogl_offscreen_unref (CoglHandle handle);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __COGL_OFFSCREEN_H__ */
|