src/gallium/drivers/swr/rasterizer/core/knobs.h

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  23  * @file knobs.h
  24  *
  25  * @brief Static (Compile-Time) Knobs for Core.
  26  *
  27  ******************************************************************************/
  28 #pragma once
  29
  30 #include <stdint.h>
  31 #include <gen_knobs.h>
  32
  33 #define KNOB_ARCH_AVX 0
  34 #define KNOB_ARCH_AVX2 1
  35 #define KNOB_ARCH_AVX512 2
  36
  37 ///////////////////////////////////////////////////////////////////////////////
  38 // AVX512 Support
  39 ///////////////////////////////////////////////////////////////////////////////
  40
  41 #define ENABLE_AVX512_SIMD16 1
  42 #define USE_SIMD16_FRONTEND 1
  43 #define USE_SIMD16_SHADERS 1 // requires USE_SIMD16_FRONTEND
  44 #define USE_SIMD16_VS 1      // requires USE_SIMD16_SHADERS
  45
  46 ///////////////////////////////////////////////////////////////////////////////
  47 // Architecture validation
  48 ///////////////////////////////////////////////////////////////////////////////
  49 #if !defined(KNOB_ARCH)
  50 #define KNOB_ARCH KNOB_ARCH_AVX
  51 #endif
  52
  53 #if (KNOB_ARCH == KNOB_ARCH_AVX)
  54 #define KNOB_ARCH_ISA AVX
  55 #define KNOB_ARCH_STR "AVX"
  56 #elif (KNOB_ARCH == KNOB_ARCH_AVX2)
  57 #define KNOB_ARCH_ISA AVX2
  58 #define KNOB_ARCH_STR "AVX2"
  59 #elif (KNOB_ARCH == KNOB_ARCH_AVX512)
  60 #define KNOB_ARCH_ISA AVX512F
  61 #define KNOB_ARCH_STR "AVX512"
  62 #else
  63 #error "Unknown architecture"
  64 #endif
  65
  66 #define KNOB_SIMD_WIDTH 8
  67 #define KNOB_SIMD_BYTES 32
  68
  69 #define KNOB_SIMD16_WIDTH 16
  70 #define KNOB_SIMD16_BYTES 64
  71
  72 #define MAX_KNOB_ARCH_STR_LEN sizeof("AVX512_PLUS_PADDING")
  73
  74 ///////////////////////////////////////////////////////////////////////////////
  75 // Configuration knobs
  76 ///////////////////////////////////////////////////////////////////////////////
  77 // Maximum supported number of active vertex buffer streams
  78 #define KNOB_NUM_STREAMS 32
  79
  80 // Maximum supported active viewports and scissors
  81 #define KNOB_NUM_VIEWPORTS_SCISSORS 16
  82
  83 // Guardband range used by the clipper
  84 #define KNOB_GUARDBAND_WIDTH 32768.0f
  85 #define KNOB_GUARDBAND_HEIGHT 32768.0f
  86
  87 // Scratch space requirements per worker. Currently only used for TGSM sizing for some stages
  88 #define KNOB_WORKER_SCRATCH_SPACE_SIZE (32 * 1024)
  89
  90 ///////////////////////////////
  91 // Macro tile configuration
  92 ///////////////////////////////
  93
  94 // raster tile dimensions
  95 #define KNOB_TILE_X_DIM 8
  96 #define KNOB_TILE_X_DIM_SHIFT 3
  97 #define KNOB_TILE_Y_DIM 8
  98 #define KNOB_TILE_Y_DIM_SHIFT 3
  99
 100 // fixed macrotile pixel dimension for now, eventually will be
 101 // dynamically set based on tile format and pixel size
 102 #define KNOB_MACROTILE_X_DIM 32
 103 #define KNOB_MACROTILE_Y_DIM 32
 104 #define KNOB_MACROTILE_X_DIM_FIXED_SHIFT 13
 105 #define KNOB_MACROTILE_Y_DIM_FIXED_SHIFT 13
 106 #define KNOB_MACROTILE_X_DIM_FIXED (KNOB_MACROTILE_X_DIM << 8)
 107 #define KNOB_MACROTILE_Y_DIM_FIXED (KNOB_MACROTILE_Y_DIM << 8)
 108 #define KNOB_MACROTILE_X_DIM_IN_TILES (KNOB_MACROTILE_X_DIM >> KNOB_TILE_X_DIM_SHIFT)
 109 #define KNOB_MACROTILE_Y_DIM_IN_TILES (KNOB_MACROTILE_Y_DIM >> KNOB_TILE_Y_DIM_SHIFT)
 110
 111 // total # of hot tiles available. This should be enough to
 112 // fully render a 16kx16k 128bpp render target
 113 #define KNOB_NUM_HOT_TILES_X 512
 114 #define KNOB_NUM_HOT_TILES_Y 512
 115 #define KNOB_COLOR_HOT_TILE_FORMAT R32G32B32A32_FLOAT
 116 #define KNOB_DEPTH_HOT_TILE_FORMAT R32_FLOAT
 117 #define KNOB_STENCIL_HOT_TILE_FORMAT R8_UINT
 118
 119 // Max scissor rectangle
 120 #define KNOB_MAX_SCISSOR_X KNOB_NUM_HOT_TILES_X* KNOB_MACROTILE_X_DIM
 121 #define KNOB_MAX_SCISSOR_Y KNOB_NUM_HOT_TILES_Y* KNOB_MACROTILE_Y_DIM
 122
 123 #if KNOB_SIMD_WIDTH == 8 && KNOB_TILE_X_DIM < 4
 124 #error "incompatible width/tile dimensions"
 125 #endif
 126
 127 #if ENABLE_AVX512_SIMD16
 128 #if KNOB_SIMD16_WIDTH == 16 && KNOB_TILE_X_DIM < 8
 129 #error "incompatible width/tile dimensions"
 130 #endif
 131 #endif
 132
 133 #if KNOB_SIMD_WIDTH == 8
 134 #define SIMD_TILE_X_DIM 4
 135 #define SIMD_TILE_Y_DIM 2
 136 #else
 137 #error "Invalid simd width"
 138 #endif
 139
 140 #if ENABLE_AVX512_SIMD16
 141 #if KNOB_SIMD16_WIDTH == 16
 142 #define SIMD16_TILE_X_DIM 8
 143 #define SIMD16_TILE_Y_DIM 2
 144 #else
 145 #error "Invalid simd width"
 146 #endif
 147 #endif
 148
 149 ///////////////////////////////////////////////////////////////////////////////
 150 // Optimization knobs
 151 ///////////////////////////////////////////////////////////////////////////////
 152 #define KNOB_USE_FAST_SRGB TRUE
 153
 154 // enables cut-aware primitive assembler
 155 #define KNOB_ENABLE_CUT_AWARE_PA TRUE
 156
 157 // enables early rasterization (useful for small triangles)
 158 #if !defined(KNOB_ENABLE_EARLY_RAST)
 159 #define KNOB_ENABLE_EARLY_RAST 1
 160 #endif
 161
 162 #if KNOB_ENABLE_EARLY_RAST
 163 #define ER_SIMD_TILE_X_SHIFT 2
 164 #define ER_SIMD_TILE_Y_SHIFT 2
 165 #endif
 166
 167 ///////////////////////////////////////////////////////////////////////////////
 168 // Debug knobs
 169 ///////////////////////////////////////////////////////////////////////////////
 170 //#define KNOB_ENABLE_RDTSC
 171
 172 // Set to 1 to use the dynamic KNOB_TOSS_XXXX knobs.
 173 #if !defined(KNOB_ENABLE_TOSS_POINTS)
 174 #define KNOB_ENABLE_TOSS_POINTS 0
 175 #endif