mutter/cogl/cogl-fence.h

137 lines
4.1 KiB
C
Raw Normal View History

/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2012 Collabora Ltd.
*
* 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_FENCE_H__
#define __COGL_FENCE_H__
#include <cogl/cogl-types.h>
#include <cogl/cogl-framebuffer.h>
/**
* SECTION:cogl-fence
* @short_description: Functions for notification of command completion
*
* Cogl allows notification of GPU command completion; users may mark
* points in the GPU command stream and receive notification when the GPU
* has executed to that point.
*/
/**
* CoglFence:
*
* An opaque object representing a fence. This type is currently
* unused but in the future may be used to pass extra information
* about the fence completion.
*
* Since: 2.0
* Stability: Unstable
*/
typedef struct _CoglFence CoglFence;
/**
* CoglFenceCallback:
* @fence: Unused. In the future this parameter may be used to pass
* extra information about the fence completion but for now it
* should be ignored.
* @user_data: The private data passed to cogl_framebuffer_add_fence_callback()
*
* The callback prototype used with
* cogl_framebuffer_add_fence_callback() for notification of GPU
* command completion.
*
* Since: 2.0
* Stability: Unstable
*/
typedef void (* CoglFenceCallback) (CoglFence *fence,
void *user_data);
/**
* CoglFenceClosure:
*
* An opaque type representing one future callback to be made when the
* GPU command stream has passed a certain point.
*
* Since: 2.0
* Stability: Unstable
*/
typedef struct _CoglFenceClosure CoglFenceClosure;
/**
* cogl_frame_closure_get_user_data:
* @closure: A #CoglFenceClosure returned from cogl_framebuffer_add_fence()
*
* Returns the user_data submitted to cogl_framebuffer_add_fence() which
* returned a given #CoglFenceClosure.
*
* Since: 2.0
* Stability: Unstable
*/
void *
cogl_fence_closure_get_user_data (CoglFenceClosure *closure);
/**
* cogl_framebuffer_add_fence_callback:
* @framebuffer: The #CoglFramebuffer the commands have been submitted to
* @callback: A #CoglFenceCallback to be called when all commands submitted
* to Cogl have been executed
* @user_data: Private data that will be passed to the callback
*
* Calls the provided callback when all previously-submitted commands have
* been executed by the GPU.
*
* Returns non-NULL if the fence succeeded, or %NULL if it was unable to
* be inserted and the callback will never be called. The user does not
* need to free the closure; it will be freed automatically when the
* callback is called, or cancelled.
*
* Since: 2.0
* Stability: Unstable
*/
CoglFenceClosure *
cogl_framebuffer_add_fence_callback (CoglFramebuffer *framebuffer,
CoglFenceCallback callback,
void *user_data);
/**
* cogl_framebuffer_cancel_fence_callback:
* @framebuffer: The #CoglFramebuffer the commands were submitted to
* @closure: The #CoglFenceClosure returned from
* cogl_framebuffer_add_fence_callback()
*
* Removes a fence previously submitted with
* cogl_framebuffer_add_fence_callback(); the callback will not be
* called.
*
* Since: 2.0
* Stability: Unstable
*/
void
cogl_framebuffer_cancel_fence_callback (CoglFramebuffer *framebuffer,
CoglFenceClosure *closure);
#endif /* __COGL_FENCE_H__ */