src/gallium/drivers/swr/swr_fence.h

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   2  * Copyright (C) 2015 Intel Corporation.   All Rights Reserved.
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   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
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  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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  21
  22 #ifndef SWR_FENCE_H
  23 #define SWR_FENCE_H
  24
  25 #include "pipe/p_state.h"
  26 #include "util/u_inlines.h"
  27
  28 #include "swr_fence_work.h"
  29
  30 struct pipe_screen;
  31
  32 struct swr_fence {
  33    struct pipe_reference reference;
  34
  35    uint64_t read;
  36    uint64_t write;
  37
  38    unsigned pending;
  39
  40    unsigned id; /* Just for reference */
  41
  42    struct {
  43       uint32_t count;
  44       struct swr_fence_work head;
  45       struct swr_fence_work *tail;
  46    } work;
  47 };
  48
  49
  50 static inline struct swr_fence *
  51 swr_fence(struct pipe_fence_handle *fence)
  52 {
  53    return (struct swr_fence *)fence;
  54 }
  55
  56
  57 static INLINE bool
  58 swr_is_fence_done(struct pipe_fence_handle *fence_handle)
  59 {
  60    struct swr_fence *fence = swr_fence(fence_handle);
  61    return (fence->read == fence->write);
  62 }
  63
  64 static INLINE bool
  65 swr_is_fence_pending(struct pipe_fence_handle *fence_handle)
  66 {
  67    return swr_fence(fence_handle)->pending;
  68 }
  69
  70
  71 void swr_fence_init(struct pipe_screen *screen);
  72
  73 struct pipe_fence_handle *swr_fence_create();
  74
  75 void swr_fence_reference(struct pipe_screen *screen,
  76                          struct pipe_fence_handle **ptr,
  77                          struct pipe_fence_handle *f);
  78
  79 bool swr_fence_finish(struct pipe_screen *screen,
  80                       struct pipe_context *ctx,
  81                       struct pipe_fence_handle *fence_handle,
  82                       uint64_t timeout);
  83
  84 void
  85 swr_fence_submit(struct swr_context *ctx, struct pipe_fence_handle *fence);
  86
  87 uint64_t swr_get_timestamp(struct pipe_screen *screen);
  88
  89 #endif