mirror of
https://github.com/brl/mutter.git
synced 2024-11-26 18:11:05 -05:00
eb14da3874
A first step towards abandoning the CoglObject type system: convert CoglFramebuffer, CoglOffscreen and CoglOnscreen into GObjects. CoglFramebuffer is turned into an abstract GObject, while the two others are currently final. The "winsys" and "platform" are still sprinkled 'void *' in the the non-abstract type instances however. https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1496
105 lines
3.6 KiB
C
105 lines
3.6 KiB
C
/*
|
|
* Cogl
|
|
*
|
|
* A Low Level GPU Graphics and Utilities API
|
|
*
|
|
* Copyright (C) 2007,2008,2009,2012 Intel Corporation.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person
|
|
* obtaining a copy of this software and associated documentation
|
|
* files (the "Software"), to deal in the Software without
|
|
* restriction, including without limitation the rights to use, copy,
|
|
* modify, merge, publish, distribute, sublicense, and/or sell copies
|
|
* of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*
|
|
*
|
|
*/
|
|
|
|
#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>
|
|
|
|
#include <glib-object.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
/**
|
|
* SECTION:cogl-offscreen
|
|
* @short_description: Functions for creating and manipulating offscreen
|
|
* framebuffers.
|
|
*
|
|
* Cogl allows creating and operating on offscreen framebuffers.
|
|
*/
|
|
|
|
/* Offscreen api */
|
|
|
|
#define COGL_TYPE_OFFSCREEN (cogl_offscreen_get_type ())
|
|
COGL_EXPORT
|
|
G_DECLARE_FINAL_TYPE (CoglOffscreen, cogl_offscreen,
|
|
COGL, OFFSCREEN,
|
|
CoglFramebuffer)
|
|
|
|
/**
|
|
* cogl_offscreen_new_with_texture:
|
|
* @texture: A #CoglTexture pointer
|
|
*
|
|
* This creates an offscreen framebuffer 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 effectively
|
|
* 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 api only works with low-level #CoglTexture types such as
|
|
* #CoglTexture2D and not with meta-texture types such as
|
|
* #CoglTexture2DSliced.</note>
|
|
*
|
|
* The storage for the framebuffer is actually allocated lazily
|
|
* so this function will never return %NULL to indicate a runtime
|
|
* error. This means it is still possible to configure the framebuffer
|
|
* before it is really allocated.
|
|
*
|
|
* Simple applications without full error handling can simply rely on
|
|
* Cogl to lazily allocate the storage of framebuffers but you should
|
|
* be aware that if Cogl encounters an error (such as running out of
|
|
* GPU memory) then your application will simply abort with an error
|
|
* message. If you need to be able to catch such exceptions at runtime
|
|
* then you can explicitly allocate your framebuffer when you have
|
|
* finished configuring it by calling cogl_framebuffer_allocate() and
|
|
* passing in a #GError argument to catch any exceptions.
|
|
*
|
|
* Return value: (transfer full): a newly instantiated #CoglOffscreen
|
|
* framebuffer.
|
|
*/
|
|
COGL_EXPORT CoglOffscreen *
|
|
cogl_offscreen_new_with_texture (CoglTexture *texture);
|
|
|
|
/**
|
|
* cogl_offscreen_get_texture: (skip)
|
|
*/
|
|
COGL_EXPORT CoglTexture *
|
|
cogl_offscreen_get_texture (CoglOffscreen *offscreen);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __COGL_OFFSCREEN_H__ */
|