1 // Copyright 2016 The SwiftShader Authors. All Rights Reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef sw_Sampler_hpp 16 #define sw_Sampler_hpp 17 18 #include "Main/Config.hpp" 19 #include "Renderer/Surface.hpp" 20 21 namespace sw 22 { 23 struct Mipmap 24 { 25 const void *buffer[6]; 26 27 union 28 { 29 struct 30 { 31 int64_t uInt; 32 int64_t vInt; 33 int64_t wInt; 34 int64_t uFrac; 35 int64_t vFrac; 36 int64_t wFrac; 37 }; 38 39 struct 40 { 41 float4 fWidth; 42 float4 fHeight; 43 float4 fDepth; 44 }; 45 }; 46 47 short uHalf[4]; 48 short vHalf[4]; 49 short wHalf[4]; 50 short width[4]; 51 short height[4]; 52 short depth[4]; 53 short onePitchP[4]; 54 int sliceP[2]; 55 }; 56 57 struct Texture 58 { 59 Mipmap mipmap[MIPMAP_LEVELS]; 60 61 float LOD; 62 float4 widthHeightLOD; 63 float4 widthLOD; 64 float4 heightLOD; 65 float4 depthLOD; 66 67 word4 borderColor4[4]; 68 float4 borderColorF[4]; 69 float maxAnisotropy; 70 }; 71 72 enum SamplerType 73 { 74 SAMPLER_PIXEL, 75 SAMPLER_VERTEX 76 }; 77 78 enum TextureType : unsigned int 79 { 80 TEXTURE_NULL, 81 TEXTURE_2D, 82 TEXTURE_CUBE, 83 TEXTURE_3D, 84 TEXTURE_2D_ARRAY, 85 86 TEXTURE_LAST = TEXTURE_2D_ARRAY 87 }; 88 89 enum FilterType : unsigned int 90 { 91 FILTER_POINT, 92 FILTER_GATHER, 93 FILTER_MIN_POINT_MAG_LINEAR, 94 FILTER_MIN_LINEAR_MAG_POINT, 95 FILTER_LINEAR, 96 FILTER_ANISOTROPIC, 97 98 FILTER_LAST = FILTER_ANISOTROPIC 99 }; 100 101 enum MipmapType : unsigned int 102 { 103 MIPMAP_NONE, 104 MIPMAP_POINT, 105 MIPMAP_LINEAR, 106 107 MIPMAP_LAST = MIPMAP_LINEAR 108 }; 109 110 enum AddressingMode : unsigned int 111 { 112 ADDRESSING_WRAP, 113 ADDRESSING_CLAMP, 114 ADDRESSING_MIRROR, 115 ADDRESSING_MIRRORONCE, 116 ADDRESSING_BORDER, 117 ADDRESSING_LAYER, 118 119 ADDRESSING_LAST = ADDRESSING_LAYER 120 }; 121 122 enum SwizzleType : unsigned int 123 { 124 SWIZZLE_RED, 125 SWIZZLE_GREEN, 126 SWIZZLE_BLUE, 127 SWIZZLE_ALPHA, 128 SWIZZLE_ZERO, 129 SWIZZLE_ONE, 130 131 SWIZZLE_LAST = SWIZZLE_ONE 132 }; 133 134 class Sampler 135 { 136 public: 137 struct State 138 { 139 State(); 140 141 TextureType textureType : BITS(TEXTURE_LAST); 142 Format textureFormat : BITS(FORMAT_LAST); 143 FilterType textureFilter : BITS(FILTER_LAST); 144 AddressingMode addressingModeU : BITS(ADDRESSING_LAST); 145 AddressingMode addressingModeV : BITS(ADDRESSING_LAST); 146 AddressingMode addressingModeW : BITS(ADDRESSING_LAST); 147 MipmapType mipmapFilter : BITS(FILTER_LAST); 148 bool hasNPOTTexture : 1; 149 bool sRGB : 1; 150 SwizzleType swizzleR : BITS(SWIZZLE_LAST); 151 SwizzleType swizzleG : BITS(SWIZZLE_LAST); 152 SwizzleType swizzleB : BITS(SWIZZLE_LAST); 153 SwizzleType swizzleA : BITS(SWIZZLE_LAST); 154 155 #if PERF_PROFILE 156 bool compressedFormat : 1; 157 #endif 158 }; 159 160 Sampler(); 161 162 ~Sampler(); 163 164 State samplerState() const; 165 166 void setTextureLevel(int face, int level, Surface *surface, TextureType type); 167 168 void setTextureFilter(FilterType textureFilter); 169 void setMipmapFilter(MipmapType mipmapFilter); 170 void setGatherEnable(bool enable); 171 void setAddressingModeU(AddressingMode addressingMode); 172 void setAddressingModeV(AddressingMode addressingMode); 173 void setAddressingModeW(AddressingMode addressingMode); 174 void setReadSRGB(bool sRGB); 175 void setBorderColor(const Color<float> &borderColor); 176 void setMaxAnisotropy(float maxAnisotropy); 177 void setSwizzleR(SwizzleType swizzleR); 178 void setSwizzleG(SwizzleType swizzleG); 179 void setSwizzleB(SwizzleType swizzleB); 180 void setSwizzleA(SwizzleType swizzleA); 181 182 static void setFilterQuality(FilterType maximumFilterQuality); 183 static void setMipmapQuality(MipmapType maximumFilterQuality); 184 void setMipmapLOD(float lod); 185 186 bool hasTexture() const; 187 bool hasUnsignedTexture() const; 188 bool hasCubeTexture() const; 189 bool hasVolumeTexture() const; 190 191 const Texture &getTextureData(); 192 193 private: 194 MipmapType mipmapFilter() const; 195 bool hasNPOTTexture() const; 196 TextureType getTextureType() const; 197 FilterType getTextureFilter() const; 198 AddressingMode getAddressingModeU() const; 199 AddressingMode getAddressingModeV() const; 200 AddressingMode getAddressingModeW() const; 201 202 Format externalTextureFormat; 203 Format internalTextureFormat; 204 TextureType textureType; 205 206 FilterType textureFilter; 207 AddressingMode addressingModeU; 208 AddressingMode addressingModeV; 209 AddressingMode addressingModeW; 210 MipmapType mipmapFilterState; 211 bool sRGB; 212 bool gather; 213 214 SwizzleType swizzleR; 215 SwizzleType swizzleG; 216 SwizzleType swizzleB; 217 SwizzleType swizzleA; 218 Texture texture; 219 float exp2LOD; 220 221 static FilterType maximumTextureFilterQuality; 222 static MipmapType maximumMipmapFilterQuality; 223 }; 224 } 225 226 #endif // sw_Sampler_hpp 227
