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
  12  * the following conditions:
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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 #include "util/u_debug.h"
  33
  34 struct i915_context;
  35
  36 static INLINE size_t
  37 i915_winsys_batchbuffer_space(struct i915_winsys_batchbuffer *batch)
  38 {
  39    return batch->size - (batch->ptr - batch->map);
  40 }
  41
  42 static INLINE boolean
  43 i915_winsys_batchbuffer_check(struct i915_winsys_batchbuffer *batch,
  44                               size_t dwords,
  45                               size_t relocs)
  46 {
  47    return dwords * 4 <= i915_winsys_batchbuffer_space(batch) &&
  48           relocs <= (batch->max_relocs - batch->relocs);
  49 }
  50
  51 static INLINE void
  52 i915_winsys_batchbuffer_dword_unchecked(struct i915_winsys_batchbuffer *batch,
  53                               unsigned dword)
  54 {
  55    *(unsigned *)batch->ptr = dword;
  56    batch->ptr += 4;
  57 }
  58
  59 static INLINE void
  60 i915_winsys_batchbuffer_dword(struct i915_winsys_batchbuffer *batch,
  61                               unsigned dword)
  62 {
  63    assert (i915_winsys_batchbuffer_space(batch) >= 4);
  64    i915_winsys_batchbuffer_dword_unchecked(batch, dword);
  65 }
  66
  67 static INLINE void
  68 i915_winsys_batchbuffer_write(struct i915_winsys_batchbuffer *batch,
  69                               void *data,
  70                               size_t size)
  71 {
  72    assert (i915_winsys_batchbuffer_space(batch) >= size);
  73
  74    memcpy(data, batch->ptr, size);
  75    batch->ptr += size;
  76 }
  77
  78 static INLINE int
  79 i915_winsys_batchbuffer_reloc(struct i915_winsys_batchbuffer *batch,
  80                               struct i915_winsys_buffer *buffer,
  81                               enum i915_winsys_buffer_usage usage,
  82                               size_t offset, bool fenced)
  83 {
  84    return batch->iws->batchbuffer_reloc(batch, buffer, usage, offset, fenced);
  85 }
  86
  87 #endif