src/mesa/drivers/dri/i915tex/intel_batchbuffer.h

   1 #ifndef INTEL_BATCHBUFFER_H
   2 #define INTEL_BATCHBUFFER_H
   3
   4 #include "mtypes.h"
   5 #include "dri_bufmgr.h"
   6
   7 struct intel_context;
   8
   9 #define BATCH_SZ 16384
  10 #define BATCH_RESERVED 16
  11
  12 #define MAX_RELOCS 100
  13
  14 #define INTEL_BATCH_NO_CLIPRECTS 0x1
  15 #define INTEL_BATCH_CLIPRECTS    0x2
  16
  17 struct buffer_reloc
  18 {
  19    struct _DriBufferObject *buf;
  20    GLuint offset;
  21    GLuint delta;                /* not needed? */
  22 };
  23
  24 struct intel_batchbuffer
  25 {
  26    struct bufmgr *bm;
  27    struct intel_context *intel;
  28
  29    struct _DriBufferObject *buffer;
  30    struct _DriFenceObject *last_fence;
  31    GLuint flags;
  32
  33    drmBOList list;
  34    GLuint list_count;
  35    GLubyte *map;
  36    GLubyte *ptr;
  37
  38    struct buffer_reloc reloc[MAX_RELOCS];
  39    GLuint nr_relocs;
  40    GLuint size;
  41 };
  42
  43 struct intel_batchbuffer *intel_batchbuffer_alloc(struct intel_context
  44                                                   *intel);
  45
  46 void intel_batchbuffer_free(struct intel_batchbuffer *batch);
  47
  48
  49 void intel_batchbuffer_finish(struct intel_batchbuffer *batch);
  50
  51 struct _DriFenceObject *intel_batchbuffer_flush(struct intel_batchbuffer
  52                                                 *batch);
  53
  54 void intel_batchbuffer_reset(struct intel_batchbuffer *batch);
  55
  56
  57 /* Unlike bmBufferData, this currently requires the buffer be mapped.
  58  * Consider it a convenience function wrapping multple
  59  * intel_buffer_dword() calls.
  60  */
  61 void intel_batchbuffer_data(struct intel_batchbuffer *batch,
  62                             const void *data, GLuint bytes, GLuint flags);
  63
  64 void intel_batchbuffer_release_space(struct intel_batchbuffer *batch,
  65                                      GLuint bytes);
  66
  67 GLboolean intel_batchbuffer_emit_reloc(struct intel_batchbuffer *batch,
  68                                        struct _DriBufferObject *buffer,
  69                                        GLuint flags,
  70                                        GLuint mask, GLuint offset);
  71
  72 /* Inline functions - might actually be better off with these
  73  * non-inlined.  Certainly better off switching all command packets to
  74  * be passed as structs rather than dwords, but that's a little bit of
  75  * work...
  76  */
  77 static INLINE GLuint
  78 intel_batchbuffer_space(struct intel_batchbuffer *batch)
  79 {
  80    return (batch->size - BATCH_RESERVED) - (batch->ptr - batch->map);
  81 }
  82
  83
  84 static INLINE void
  85 intel_batchbuffer_emit_dword(struct intel_batchbuffer *batch, GLuint dword)
  86 {
  87    assert(batch->map);
  88    assert(intel_batchbuffer_space(batch) >= 4);
  89    *(GLuint *) (batch->ptr) = dword;
  90    batch->ptr += 4;
  91 }
  92
  93 static INLINE void
  94 intel_batchbuffer_require_space(struct intel_batchbuffer *batch,
  95                                 GLuint sz, GLuint flags)
  96 {
  97    assert(sz < batch->size - 8);
  98    if (intel_batchbuffer_space(batch) < sz ||
  99        (batch->flags != 0 && flags != 0 && batch->flags != flags))
 100       intel_batchbuffer_flush(batch);
 101
 102    batch->flags |= flags;
 103 }
 104
 105 /* Here are the crusty old macros, to be removed:
 106  */
 107 #define BATCH_LOCALS
 108
 109 #define BEGIN_BATCH(n, flags) do {                              \
 110    assert(!intel->prim.flush);                                  \
 111    intel_batchbuffer_require_space(intel->batch, (n)*4, flags); \
 112 } while (0)
 113
 114 #define OUT_BATCH(d)  intel_batchbuffer_emit_dword(intel->batch, d)
 115
 116 #define OUT_RELOC(buf,flags,mask,delta) do {                            \
 117    assert((delta) >= 0);                                                        \
 118    intel_batchbuffer_emit_reloc(intel->batch, buf, flags, mask, delta); \
 119 } while (0)
 120
 121 #define ADVANCE_BATCH() do { } while(0)
 122
 123
 124 #endif