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

   1 #ifndef INTEL_BATCHBUFFER_H
   2 #define INTEL_BATCHBUFFER_H
   3
   4 #include "main/mtypes.h"
   5
   6 #include "intel_context.h"
   7 #include "intel_bufmgr.h"
   8 #include "intel_reg.h"
   9
  10 #define BATCH_RESERVED 16
  11
  12 void intel_batchbuffer_init(struct intel_context *intel);
  13 void intel_batchbuffer_reset(struct intel_context *intel);
  14 void intel_batchbuffer_free(struct intel_context *intel);
  15 void intel_batchbuffer_save_state(struct intel_context *intel);
  16 void intel_batchbuffer_reset_to_saved(struct intel_context *intel);
  17
  18 int _intel_batchbuffer_flush(struct intel_context *intel,
  19                              const char *file, int line);
  20
  21 #define intel_batchbuffer_flush(intel) \
  22         _intel_batchbuffer_flush(intel, __FILE__, __LINE__)
  23
  24
  25
  26 /* Unlike bmBufferData, this currently requires the buffer be mapped.
  27  * Consider it a convenience function wrapping multple
  28  * intel_buffer_dword() calls.
  29  */
  30 void intel_batchbuffer_data(struct intel_context *intel,
  31                             const void *data, GLuint bytes, bool is_blit);
  32
  33 bool intel_batchbuffer_emit_reloc(struct intel_context *intel,
  34                                        drm_intel_bo *buffer,
  35                                        uint32_t read_domains,
  36                                        uint32_t write_domain,
  37                                        uint32_t offset);
  38 bool intel_batchbuffer_emit_reloc_fenced(struct intel_context *intel,
  39                                               drm_intel_bo *buffer,
  40                                               uint32_t read_domains,
  41                                               uint32_t write_domain,
  42                                               uint32_t offset);
  43 void intel_batchbuffer_emit_mi_flush(struct intel_context *intel);
  44 void intel_emit_post_sync_nonzero_flush(struct intel_context *intel);
  45 void intel_emit_depth_stall_flushes(struct intel_context *intel);
  46
  47 static INLINE uint32_t float_as_int(float f)
  48 {
  49    union {
  50       float f;
  51       uint32_t d;
  52    } fi;
  53
  54    fi.f = f;
  55    return fi.d;
  56 }
  57
  58 /* Inline functions - might actually be better off with these
  59  * non-inlined.  Certainly better off switching all command packets to
  60  * be passed as structs rather than dwords, but that's a little bit of
  61  * work...
  62  */
  63 static INLINE unsigned
  64 intel_batchbuffer_space(struct intel_context *intel)
  65 {
  66    return (intel->batch.state_batch_offset - intel->batch.reserved_space)
  67       - intel->batch.used*4;
  68 }
  69
  70
  71 static INLINE void
  72 intel_batchbuffer_emit_dword(struct intel_context *intel, GLuint dword)
  73 {
  74 #ifdef DEBUG
  75    assert(intel_batchbuffer_space(intel) >= 4);
  76 #endif
  77    intel->batch.map[intel->batch.used++] = dword;
  78 }
  79
  80 static INLINE void
  81 intel_batchbuffer_emit_float(struct intel_context *intel, float f)
  82 {
  83    intel_batchbuffer_emit_dword(intel, float_as_int(f));
  84 }
  85
  86 static INLINE void
  87 intel_batchbuffer_require_space(struct intel_context *intel,
  88                                 GLuint sz, int is_blit)
  89 {
  90
  91    if (intel->gen >= 6 &&
  92        intel->batch.is_blit != is_blit && intel->batch.used) {
  93       intel_batchbuffer_flush(intel);
  94    }
  95
  96    intel->batch.is_blit = is_blit;
  97
  98 #ifdef DEBUG
  99    assert(sz < sizeof(intel->batch.map) - BATCH_RESERVED);
 100 #endif
 101    if (intel_batchbuffer_space(intel) < sz)
 102       intel_batchbuffer_flush(intel);
 103 }
 104
 105 static INLINE void
 106 intel_batchbuffer_begin(struct intel_context *intel, int n, bool is_blit)
 107 {
 108    intel_batchbuffer_require_space(intel, n * 4, is_blit);
 109
 110    intel->batch.emit = intel->batch.used;
 111 #ifdef DEBUG
 112    intel->batch.total = n;
 113 #endif
 114 }
 115
 116 static INLINE void
 117 intel_batchbuffer_advance(struct intel_context *intel)
 118 {
 119 #ifdef DEBUG
 120    struct intel_batchbuffer *batch = &intel->batch;
 121    unsigned int _n = batch->used - batch->emit;
 122    assert(batch->total != 0);
 123    if (_n != batch->total) {
 124       fprintf(stderr, "ADVANCE_BATCH: %d of %d dwords emitted\n",
 125               _n, batch->total);
 126       abort();
 127    }
 128    batch->total = 0;
 129 #endif
 130 }
 131
 132 void intel_batchbuffer_cached_advance(struct intel_context *intel);
 133
 134 /* Here are the crusty old macros, to be removed:
 135  */
 136 #define BATCH_LOCALS
 137
 138 #define BEGIN_BATCH(n) intel_batchbuffer_begin(intel, n, false)
 139 #define BEGIN_BATCH_BLT(n) intel_batchbuffer_begin(intel, n, true)
 140 #define OUT_BATCH(d) intel_batchbuffer_emit_dword(intel, d)
 141 #define OUT_BATCH_F(f) intel_batchbuffer_emit_float(intel,f)
 142 #define OUT_RELOC(buf, read_domains, write_domain, delta) do {          \
 143    intel_batchbuffer_emit_reloc(intel, buf,                     \
 144                                 read_domains, write_domain, delta);     \
 145 } while (0)
 146 #define OUT_RELOC_FENCED(buf, read_domains, write_domain, delta) do {   \
 147    intel_batchbuffer_emit_reloc_fenced(intel, buf,              \
 148                                        read_domains, write_domain, delta); \
 149 } while (0)
 150
 151 #define ADVANCE_BATCH() intel_batchbuffer_advance(intel);
 152 #define CACHED_BATCH() intel_batchbuffer_cached_advance(intel);
 153
 154 #endif