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 #ifdef __cplusplus
  11 extern "C" {
  12 #endif
  13
  14 #define BATCH_RESERVED 16
  15
  16 struct intel_batchbuffer;
  17
  18 void intel_batchbuffer_init(struct intel_context *intel);
  19 void intel_batchbuffer_reset(struct intel_context *intel);
  20 void intel_batchbuffer_free(struct intel_context *intel);
  21 void intel_batchbuffer_save_state(struct intel_context *intel);
  22 void intel_batchbuffer_reset_to_saved(struct intel_context *intel);
  23
  24 int _intel_batchbuffer_flush(struct intel_context *intel,
  25                              const char *file, int line);
  26
  27 #define intel_batchbuffer_flush(intel) \
  28         _intel_batchbuffer_flush(intel, __FILE__, __LINE__)
  29
  30
  31
  32 /* Unlike bmBufferData, this currently requires the buffer be mapped.
  33  * Consider it a convenience function wrapping multple
  34  * intel_buffer_dword() calls.
  35  */
  36 void intel_batchbuffer_data(struct intel_context *intel,
  37                             const void *data, GLuint bytes, bool is_blit);
  38
  39 bool intel_batchbuffer_emit_reloc(struct intel_context *intel,
  40                                        drm_intel_bo *buffer,
  41                                        uint32_t read_domains,
  42                                        uint32_t write_domain,
  43                                        uint32_t offset);
  44 bool intel_batchbuffer_emit_reloc_fenced(struct intel_context *intel,
  45                                               drm_intel_bo *buffer,
  46                                               uint32_t read_domains,
  47                                               uint32_t write_domain,
  48                                               uint32_t offset);
  49 void intel_batchbuffer_emit_mi_flush(struct intel_context *intel);
  50 void intel_emit_post_sync_nonzero_flush(struct intel_context *intel);
  51 void intel_emit_depth_stall_flushes(struct intel_context *intel);
  52 void gen7_emit_vs_workaround_flush(struct intel_context *intel);
  53
  54 static INLINE uint32_t float_as_int(float f)
  55 {
  56    union {
  57       float f;
  58       uint32_t d;
  59    } fi;
  60
  61    fi.f = f;
  62    return fi.d;
  63 }
  64
  65 /* Inline functions - might actually be better off with these
  66  * non-inlined.  Certainly better off switching all command packets to
  67  * be passed as structs rather than dwords, but that's a little bit of
  68  * work...
  69  */
  70 static INLINE unsigned
  71 intel_batchbuffer_space(struct intel_context *intel)
  72 {
  73    return (intel->batch.state_batch_offset - intel->batch.reserved_space)
  74       - intel->batch.used*4;
  75 }
  76
  77
  78 static INLINE void
  79 intel_batchbuffer_emit_dword(struct intel_context *intel, GLuint dword)
  80 {
  81 #ifdef DEBUG
  82    assert(intel_batchbuffer_space(intel) >= 4);
  83 #endif
  84    intel->batch.map[intel->batch.used++] = dword;
  85 }
  86
  87 static INLINE void
  88 intel_batchbuffer_emit_float(struct intel_context *intel, float f)
  89 {
  90    intel_batchbuffer_emit_dword(intel, float_as_int(f));
  91 }
  92
  93 static INLINE void
  94 intel_batchbuffer_require_space(struct intel_context *intel,
  95                                 GLuint sz, int is_blit)
  96 {
  97
  98    if (intel->gen >= 6 &&
  99        intel->batch.is_blit != is_blit && intel->batch.used) {
 100       intel_batchbuffer_flush(intel);
 101    }
 102
 103    intel->batch.is_blit = is_blit;
 104
 105 #ifdef DEBUG
 106    assert(sz < sizeof(intel->batch.map) - BATCH_RESERVED);
 107 #endif
 108    if (intel_batchbuffer_space(intel) < sz)
 109       intel_batchbuffer_flush(intel);
 110 }
 111
 112 static INLINE void
 113 intel_batchbuffer_begin(struct intel_context *intel, int n, bool is_blit)
 114 {
 115    intel_batchbuffer_require_space(intel, n * 4, is_blit);
 116
 117    intel->batch.emit = intel->batch.used;
 118 #ifdef DEBUG
 119    intel->batch.total = n;
 120 #endif
 121 }
 122
 123 static INLINE void
 124 intel_batchbuffer_advance(struct intel_context *intel)
 125 {
 126 #ifdef DEBUG
 127    struct intel_batchbuffer *batch = &intel->batch;
 128    unsigned int _n = batch->used - batch->emit;
 129    assert(batch->total != 0);
 130    if (_n != batch->total) {
 131       fprintf(stderr, "ADVANCE_BATCH: %d of %d dwords emitted\n",
 132               _n, batch->total);
 133       abort();
 134    }
 135    batch->total = 0;
 136 #endif
 137 }
 138
 139 void intel_batchbuffer_cached_advance(struct intel_context *intel);
 140
 141 /* Here are the crusty old macros, to be removed:
 142  */
 143 #define BATCH_LOCALS
 144
 145 #define BEGIN_BATCH(n) intel_batchbuffer_begin(intel, n, false)
 146 #define BEGIN_BATCH_BLT(n) intel_batchbuffer_begin(intel, n, true)
 147 #define OUT_BATCH(d) intel_batchbuffer_emit_dword(intel, d)
 148 #define OUT_BATCH_F(f) intel_batchbuffer_emit_float(intel,f)
 149 #define OUT_RELOC(buf, read_domains, write_domain, delta) do {          \
 150    intel_batchbuffer_emit_reloc(intel, buf,                     \
 151                                 read_domains, write_domain, delta);     \
 152 } while (0)
 153 #define OUT_RELOC_FENCED(buf, read_domains, write_domain, delta) do {   \
 154    intel_batchbuffer_emit_reloc_fenced(intel, buf,              \
 155                                        read_domains, write_domain, delta); \
 156 } while (0)
 157
 158 #define ADVANCE_BATCH() intel_batchbuffer_advance(intel);
 159 #define CACHED_BATCH() intel_batchbuffer_cached_advance(intel);
 160
 161 #ifdef __cplusplus
 162 }
 163 #endif
 164
 165 #endif