src/gallium/drivers/i915/i915_batchbuffer.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
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  11  * permit persons to whom the Software is furnished to do so, subject to
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  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
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  26  **************************************************************************/
  27
  28 #ifndef I915_BATCHBUFFER_H
  29 #define I915_BATCHBUFFER_H
  30
  31 #include "i915_winsys.h"
  32
  33 static INLINE boolean
  34 i915_winsys_batchbuffer_check(struct i915_winsys_batchbuffer *batch,
  35                               size_t dwords,
  36                               size_t relocs)
  37 {
  38    return dwords * 4 <= batch->size - (batch->ptr - batch->map) &&
  39           relocs <= (batch->max_relocs - batch->relocs);
  40 }
  41
  42 static INLINE size_t
  43 i915_winsys_batchbuffer_space(struct i915_winsys_batchbuffer *batch)
  44 {
  45    return batch->size - (batch->ptr - batch->map);
  46 }
  47
  48 static INLINE void
  49 i915_winsys_batchbuffer_dword(struct i915_winsys_batchbuffer *batch,
  50                               unsigned dword)
  51 {
  52    if (i915_winsys_batchbuffer_space(batch) < 4)
  53       return;
  54
  55    *(unsigned *)batch->ptr = dword;
  56    batch->ptr += 4;
  57 }
  58
  59 static INLINE void
  60 i915_winsys_batchbuffer_write(struct i915_winsys_batchbuffer *batch,
  61                        void *data,
  62                        size_t size)
  63 {
  64    if (i915_winsys_batchbuffer_space(batch) < size)
  65       return;
  66
  67    memcpy(data, batch->ptr, size);
  68    batch->ptr += size;
  69 }
  70
  71 static INLINE int
  72 i915_winsys_batchbuffer_reloc(struct i915_winsys_batchbuffer *batch,
  73                               struct i915_winsys_buffer *buffer,
  74                               enum i915_winsys_buffer_usage usage,
  75                               size_t offset)
  76 {
  77    return batch->iws->batchbuffer_reloc(batch, buffer, usage, offset);
  78 }
  79
  80 static INLINE void
  81 i915_winsys_batchbuffer_flush(struct i915_winsys_batchbuffer *batch,
  82                               struct pipe_fence_handle **fence)
  83 {
  84    batch->iws->batchbuffer_flush(batch, fence);
  85 }
  86
  87 #endif