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 "intel_context.h"
   7 #include "intel_bufmgr.h"
   8 #include "intel_reg.h"
   9
  10 #define BATCH_SZ 16384
  11 #define BATCH_RESERVED 16
  12
  13 enum cliprect_mode {
  14    /**
  15     * Batchbuffer contents may be looped over per cliprect, but do not
  16     * require it.
  17     */
  18    IGNORE_CLIPRECTS,
  19    /**
  20     * Batchbuffer contents require looping over per cliprect at batch submit
  21     * time.
  22     */
  23    LOOP_CLIPRECTS,
  24    /**
  25     * Batchbuffer contents contain drawing that should not be executed multiple
  26     * times.
  27     */
  28    NO_LOOP_CLIPRECTS,
  29    /**
  30     * Batchbuffer contents contain drawing that already handles cliprects, such
  31     * as 2D drawing to front/back/depth that doesn't respect DRAWING_RECTANGLE.
  32     * Equivalent behavior to NO_LOOP_CLIPRECTS, but may not persist in batch
  33     * outside of LOCK/UNLOCK.
  34     */
  35    REFERENCES_CLIPRECTS
  36 };
  37
  38 struct intel_batchbuffer
  39 {
  40    struct intel_context *intel;
  41
  42    dri_bo *buf;
  43
  44    GLubyte *buffer;
  45
  46    GLubyte *map;
  47    GLubyte *ptr;
  48
  49    enum cliprect_mode cliprect_mode;
  50
  51    GLuint size;
  52
  53    GLuint dirty_state;
  54 };
  55
  56 struct intel_batchbuffer *intel_batchbuffer_alloc(struct intel_context
  57                                                   *intel);
  58
  59 void intel_batchbuffer_free(struct intel_batchbuffer *batch);
  60
  61
  62 void _intel_batchbuffer_flush(struct intel_batchbuffer *batch,
  63                               const char *file, int line);
  64
  65 #define intel_batchbuffer_flush(batch) \
  66         _intel_batchbuffer_flush(batch, __FILE__, __LINE__)
  67
  68 void intel_batchbuffer_reset(struct intel_batchbuffer *batch);
  69
  70
  71 /* Unlike bmBufferData, this currently requires the buffer be mapped.
  72  * Consider it a convenience function wrapping multple
  73  * intel_buffer_dword() calls.
  74  */
  75 void intel_batchbuffer_data(struct intel_batchbuffer *batch,
  76                             const void *data, GLuint bytes,
  77                             enum cliprect_mode cliprect_mode);
  78
  79 void intel_batchbuffer_release_space(struct intel_batchbuffer *batch,
  80                                      GLuint bytes);
  81
  82 GLboolean intel_batchbuffer_emit_reloc(struct intel_batchbuffer *batch,
  83                                        dri_bo *buffer,
  84                                        uint32_t read_domains,
  85                                        uint32_t write_domain,
  86                                        uint32_t offset);
  87
  88 /* Inline functions - might actually be better off with these
  89  * non-inlined.  Certainly better off switching all command packets to
  90  * be passed as structs rather than dwords, but that's a little bit of
  91  * work...
  92  */
  93 static INLINE GLint
  94 intel_batchbuffer_space(struct intel_batchbuffer *batch)
  95 {
  96    return (batch->size - BATCH_RESERVED) - (batch->ptr - batch->map);
  97 }
  98
  99
 100 static INLINE void
 101 intel_batchbuffer_emit_dword(struct intel_batchbuffer *batch, GLuint dword)
 102 {
 103    assert(batch->map);
 104    assert(intel_batchbuffer_space(batch) >= 4);
 105    *(GLuint *) (batch->ptr) = dword;
 106    batch->ptr += 4;
 107 }
 108
 109 static INLINE void
 110 intel_batchbuffer_require_space(struct intel_batchbuffer *batch,
 111                                 GLuint sz,
 112                                 enum cliprect_mode cliprect_mode)
 113 {
 114    assert(sz < batch->size - 8);
 115    if (intel_batchbuffer_space(batch) < sz)
 116       intel_batchbuffer_flush(batch);
 117
 118    if (cliprect_mode != IGNORE_CLIPRECTS) {
 119       if (batch->cliprect_mode == IGNORE_CLIPRECTS) {
 120          batch->cliprect_mode = cliprect_mode;
 121       } else {
 122          if (batch->cliprect_mode != cliprect_mode) {
 123             intel_batchbuffer_flush(batch);
 124             batch->cliprect_mode = cliprect_mode;
 125          }
 126       }
 127    }
 128 }
 129
 130 /* Here are the crusty old macros, to be removed:
 131  */
 132 #define BATCH_LOCALS
 133
 134 #define BEGIN_BATCH(n, cliprect_mode) do {                              \
 135    intel_batchbuffer_require_space(intel->batch, (n)*4, cliprect_mode); \
 136 } while (0)
 137
 138 #define OUT_BATCH(d)  intel_batchbuffer_emit_dword(intel->batch, d)
 139
 140 #define OUT_RELOC(buf, read_domains, write_domain, delta) do {          \
 141    assert((delta) >= 0);                                                \
 142    intel_batchbuffer_emit_reloc(intel->batch, buf,                      \
 143                                 read_domains, write_domain, delta);     \
 144 } while (0)
 145
 146 #define ADVANCE_BATCH() do { } while(0)
 147
 148
 149 static INLINE void
 150 intel_batchbuffer_emit_mi_flush(struct intel_batchbuffer *batch)
 151 {
 152    intel_batchbuffer_require_space(batch, 4, IGNORE_CLIPRECTS);
 153    intel_batchbuffer_emit_dword(batch, MI_FLUSH);
 154 }
 155
 156 #endif