src/mesa/drivers/dri/intel/intel_batchbuffer.h

   1 #ifndef INTEL_BATCHBUFFER_H
   2 #define INTEL_BATCHBUFFER_H
   3
   4 #include "mtypes.h"
   5
   6 #include "dri_bufmgr.h"
   7
   8 struct intel_context;
   9
  10 #define BATCH_SZ 16384
  11 #define BATCH_RESERVED 16
  12
  13 #define INTEL_BATCH_NO_CLIPRECTS 0x1
  14 #define INTEL_BATCH_CLIPRECTS    0x2
  15
  16 struct intel_batchbuffer
  17 {
  18    struct intel_context *intel;
  19
  20    dri_bo *buf;
  21    dri_fence *last_fence;
  22    GLuint flags;
  23
  24    GLubyte *map;
  25    GLubyte *ptr;
  26
  27    GLuint size;
  28 };
  29
  30 struct intel_batchbuffer *intel_batchbuffer_alloc(struct intel_context
  31                                                   *intel);
  32
  33 void intel_batchbuffer_free(struct intel_batchbuffer *batch);
  34
  35
  36 void intel_batchbuffer_finish(struct intel_batchbuffer *batch);
  37
  38 void intel_batchbuffer_flush(struct intel_batchbuffer *batch);
  39
  40 void intel_batchbuffer_reset(struct intel_batchbuffer *batch);
  41
  42
  43 /* Unlike bmBufferData, this currently requires the buffer be mapped.
  44  * Consider it a convenience function wrapping multple
  45  * intel_buffer_dword() calls.
  46  */
  47 void intel_batchbuffer_data(struct intel_batchbuffer *batch,
  48                             const void *data, GLuint bytes, GLuint flags);
  49
  50 void intel_batchbuffer_release_space(struct intel_batchbuffer *batch,
  51                                      GLuint bytes);
  52
  53 GLboolean intel_batchbuffer_emit_reloc(struct intel_batchbuffer *batch,
  54                                        dri_bo *buffer,
  55                                        GLuint flags, GLuint offset);
  56
  57 /* Inline functions - might actually be better off with these
  58  * non-inlined.  Certainly better off switching all command packets to
  59  * be passed as structs rather than dwords, but that's a little bit of
  60  * work...
  61  */
  62 static INLINE GLuint
  63 intel_batchbuffer_space(struct intel_batchbuffer *batch)
  64 {
  65    return (batch->size - BATCH_RESERVED) - (batch->ptr - batch->map);
  66 }
  67
  68
  69 static INLINE void
  70 intel_batchbuffer_emit_dword(struct intel_batchbuffer *batch, GLuint dword)
  71 {
  72    assert(batch->map);
  73    assert(intel_batchbuffer_space(batch) >= 4);
  74    *(GLuint *) (batch->ptr) = dword;
  75    batch->ptr += 4;
  76 }
  77
  78 static INLINE void
  79 intel_batchbuffer_require_space(struct intel_batchbuffer *batch,
  80                                 GLuint sz, GLuint flags)
  81 {
  82    assert(sz < batch->size - 8);
  83    if (intel_batchbuffer_space(batch) < sz ||
  84        (batch->flags != 0 && flags != 0 && batch->flags != flags))
  85       intel_batchbuffer_flush(batch);
  86
  87    batch->flags |= flags;
  88 }
  89
  90 /* Here are the crusty old macros, to be removed:
  91  */
  92 #define BATCH_LOCALS
  93
  94 #define BEGIN_BATCH(n, flags) do {                              \
  95    assert(!intel->prim.flush);                                  \
  96    intel_batchbuffer_require_space(intel->batch, (n)*4, flags); \
  97 } while (0)
  98
  99 #define OUT_BATCH(d)  intel_batchbuffer_emit_dword(intel->batch, d)
 100
 101 #define OUT_RELOC(buf, flags, delta) do {                               \
 102    assert((delta) >= 0);                                                \
 103    intel_batchbuffer_emit_reloc(intel->batch, buf, flags, delta);       \
 104 } while (0)
 105
 106 #define ADVANCE_BATCH() do { } while(0)
 107
 108
 109 #endif