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