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 /**
  15  * Number of bytes to reserve for commands necessary to complete a batch.
  16  *
  17  * This includes:
  18  * - MI_BATCHBUFFER_END (4 bytes)
  19  * - Optional MI_NOOP for ensuring the batch length is qword aligned (4 bytes)
  20  * - Any state emitted by vtbl->finish_batch():
  21  *   - Gen4-5 record ending occlusion query values (4 * 4 = 16 bytes)
  22  */
  23 #define BATCH_RESERVED 24
  24
  25 struct intel_batchbuffer;
  26
  27 void intel_batchbuffer_init(struct intel_context *intel);
  28 void intel_batchbuffer_free(struct intel_context *intel);
  29 void intel_batchbuffer_save_state(struct intel_context *intel);
  30 void intel_batchbuffer_reset_to_saved(struct intel_context *intel);
  31
  32 int _intel_batchbuffer_flush(struct intel_context *intel,
  33                              const char *file, int line);
  34
  35 #define intel_batchbuffer_flush(intel) \
  36         _intel_batchbuffer_flush(intel, __FILE__, __LINE__)
  37
  38
  39
  40 /* Unlike bmBufferData, this currently requires the buffer be mapped.
  41  * Consider it a convenience function wrapping multple
  42  * intel_buffer_dword() calls.
  43  */
  44 void intel_batchbuffer_data(struct intel_context *intel,
  45                             const void *data, GLuint bytes, bool is_blit);
  46
  47 bool intel_batchbuffer_emit_reloc(struct intel_context *intel,
  48                                        drm_intel_bo *buffer,
  49                                        uint32_t read_domains,
  50                                        uint32_t write_domain,
  51                                        uint32_t offset);
  52 bool intel_batchbuffer_emit_reloc_fenced(struct intel_context *intel,
  53                                               drm_intel_bo *buffer,
  54                                               uint32_t read_domains,
  55                                               uint32_t write_domain,
  56                                               uint32_t offset);
  57 void intel_batchbuffer_emit_mi_flush(struct intel_context *intel);
  58 void intel_emit_post_sync_nonzero_flush(struct intel_context *intel);
  59 void intel_emit_depth_stall_flushes(struct intel_context *intel);
  60 void gen7_emit_vs_workaround_flush(struct intel_context *intel);
  61
  62 static INLINE uint32_t float_as_int(float f)
  63 {
  64    union {
  65       float f;
  66       uint32_t d;
  67    } fi;
  68
  69    fi.f = f;
  70    return fi.d;
  71 }
  72
  73 /* Inline functions - might actually be better off with these
  74  * non-inlined.  Certainly better off switching all command packets to
  75  * be passed as structs rather than dwords, but that's a little bit of
  76  * work...
  77  */
  78 static INLINE unsigned
  79 intel_batchbuffer_space(struct intel_context *intel)
  80 {
  81    return (intel->batch.state_batch_offset - intel->batch.reserved_space)
  82       - intel->batch.used*4;
  83 }
  84
  85
  86 static INLINE void
  87 intel_batchbuffer_emit_dword(struct intel_context *intel, GLuint dword)
  88 {
  89 #ifdef DEBUG
  90    assert(intel_batchbuffer_space(intel) >= 4);
  91 #endif
  92    intel->batch.map[intel->batch.used++] = dword;
  93 }
  94
  95 static INLINE void
  96 intel_batchbuffer_emit_float(struct intel_context *intel, float f)
  97 {
  98    intel_batchbuffer_emit_dword(intel, float_as_int(f));
  99 }
 100
 101 static INLINE void
 102 intel_batchbuffer_require_space(struct intel_context *intel,
 103                                 GLuint sz, int is_blit)
 104 {
 105
 106    if (intel->gen >= 6 &&
 107        intel->batch.is_blit != is_blit && intel->batch.used) {
 108       intel_batchbuffer_flush(intel);
 109    }
 110
 111    intel->batch.is_blit = is_blit;
 112
 113 #ifdef DEBUG
 114    assert(sz < intel->maxBatchSize - BATCH_RESERVED);
 115 #endif
 116    if (intel_batchbuffer_space(intel) < sz)
 117       intel_batchbuffer_flush(intel);
 118 }
 119
 120 static INLINE void
 121 intel_batchbuffer_begin(struct intel_context *intel, int n, bool is_blit)
 122 {
 123    intel_batchbuffer_require_space(intel, n * 4, is_blit);
 124
 125    intel->batch.emit = intel->batch.used;
 126 #ifdef DEBUG
 127    intel->batch.total = n;
 128 #endif
 129 }
 130
 131 static INLINE void
 132 intel_batchbuffer_advance(struct intel_context *intel)
 133 {
 134 #ifdef DEBUG
 135    struct intel_batchbuffer *batch = &intel->batch;
 136    unsigned int _n = batch->used - batch->emit;
 137    assert(batch->total != 0);
 138    if (_n != batch->total) {
 139       fprintf(stderr, "ADVANCE_BATCH: %d of %d dwords emitted\n",
 140               _n, batch->total);
 141       abort();
 142    }
 143    batch->total = 0;
 144 #endif
 145 }
 146
 147 void intel_batchbuffer_cached_advance(struct intel_context *intel);
 148
 149 /* Here are the crusty old macros, to be removed:
 150  */
 151 #define BATCH_LOCALS
 152
 153 #define BEGIN_BATCH(n) intel_batchbuffer_begin(intel, n, false)
 154 #define BEGIN_BATCH_BLT(n) intel_batchbuffer_begin(intel, n, true)
 155 #define OUT_BATCH(d) intel_batchbuffer_emit_dword(intel, d)
 156 #define OUT_BATCH_F(f) intel_batchbuffer_emit_float(intel,f)
 157 #define OUT_RELOC(buf, read_domains, write_domain, delta) do {          \
 158    intel_batchbuffer_emit_reloc(intel, buf,                     \
 159                                 read_domains, write_domain, delta);     \
 160 } while (0)
 161 #define OUT_RELOC_FENCED(buf, read_domains, write_domain, delta) do {   \
 162    intel_batchbuffer_emit_reloc_fenced(intel, buf,              \
 163                                        read_domains, write_domain, delta); \
 164 } while (0)
 165
 166 #define ADVANCE_BATCH() intel_batchbuffer_advance(intel);
 167 #define CACHED_BATCH() intel_batchbuffer_cached_advance(intel);
 168
 169 #ifdef __cplusplus
 170 }
 171 #endif
 172
 173 #endif