79 lines
2.7 KiB
C
79 lines
2.7 KiB
C
/*
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* Cogl
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*
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* A Low Level GPU Graphics and Utilities API
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*
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* Copyright (C) 2012 Red Hat, Inc.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*
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*/
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#ifndef __COGL_FRAME_INFO_PRIVATE_H
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#define __COGL_FRAME_INFO_PRIVATE_H
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#include "cogl-frame-info.h"
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#include "cogl-object-private.h"
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typedef enum _CoglFrameInfoFlag
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{
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COGL_FRAME_INFO_FLAG_NONE = 0,
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COGL_FRAME_INFO_FLAG_SYMBOLIC = 1 << 0,
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/* presentation_time timestamp was provided by the hardware */
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COGL_FRAME_INFO_FLAG_HW_CLOCK = 1 << 1,
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/*
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* The presentation of this frame was done zero-copy. This means the buffer
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* from the client was given to display hardware as is, without copying it.
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* Compositing with OpenGL counts as copying, even if textured directly from
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* the client buffer. Possible zero-copy cases include direct scanout of a
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* fullscreen surface and a surface on a hardware overlay.
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*/
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COGL_FRAME_INFO_FLAG_ZERO_COPY = 1 << 2,
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/*
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* The presentation was synchronized to the "vertical retrace" by the display
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* hardware such that tearing does not happen. Relying on user space
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* scheduling is not acceptable for this flag. If presentation is done by a
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* copy to the active frontbuffer, then it must guarantee that tearing cannot
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* happen.
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*/
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COGL_FRAME_INFO_FLAG_VSYNC = 1 << 3,
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} CoglFrameInfoFlag;
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struct _CoglFrameInfo
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{
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CoglObject _parent;
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int64_t frame_counter;
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int64_t presentation_time_us; /* CLOCK_MONOTONIC */
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float refresh_rate;
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int64_t global_frame_counter;
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CoglFrameInfoFlag flags;
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unsigned int sequence;
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};
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COGL_EXPORT
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CoglFrameInfo *cogl_frame_info_new (int64_t global_frame_counter);
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#endif /* __COGL_FRAME_INFO_PRIVATE_H */
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