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_SamplerCore_hpp 16 #define sw_SamplerCore_hpp 17 18 #include "PixelRoutine.hpp" 19 #include "Reactor/Nucleus.hpp" 20 21 namespace sw 22 { 23 enum SamplerMethod 24 { 25 Implicit, 26 Bias, 27 Lod, 28 Grad, 29 }; 30 31 class SamplerCore 32 { 33 public: 34 SamplerCore(Pointer<Byte> &r, const Sampler::State &state); 35 36 void sampleTexture(Pointer<Byte> &texture, Vector4s &c, Float4 &u, Float4 &v, Float4 &w, Float4 &q, Vector4f &dsx, Vector4f &dsy, SamplerMethod method = Implicit); 37 void sampleTexture(Pointer<Byte> &texture, Vector4f &c, Float4 &u, Float4 &v, Float4 &w, Float4 &q, Vector4f &dsx, Vector4f &dsy, SamplerMethod method = Implicit); 38 39 private: 40 void sampleTexture(Pointer<Byte> &texture, Vector4s &c, Float4 &u, Float4 &v, Float4 &w, Float4 &q, Vector4f &dsx, Vector4f &dsy, SamplerMethod method, bool fixed12); 41 42 void border(Short4 &mask, Float4 &coordinates); 43 void border(Int4 &mask, Float4 &coordinates); 44 Short4 offsetSample(Short4 &uvw, Pointer<Byte> &mipmap, int halfOffset, bool wrap, int count, Float &lod); 45 void sampleFilter(Pointer<Byte> &texture, Vector4s &c, Float4 &u, Float4 &v, Float4 &w, Float &lod, Float &anisotropy, Float4 &uDelta, Float4 &vDelta, Int face[4], SamplerMethod method); 46 void sampleAniso(Pointer<Byte> &texture, Vector4s &c, Float4 &u, Float4 &v, Float4 &w, Float &lod, Float &anisotropy, Float4 &uDelta, Float4 &vDelta, Int face[4], bool secondLOD, SamplerMethod method); 47 void sampleQuad(Pointer<Byte> &texture, Vector4s &c, Float4 &u, Float4 &v, Float4 &w, Float &lod, Int face[4], bool secondLOD); 48 void sampleQuad2D(Pointer<Byte> &texture, Vector4s &c, Float4 &u, Float4 &v, Float4 &w, Float &lod, Int face[4], bool secondLOD); 49 void sample3D(Pointer<Byte> &texture, Vector4s &c, Float4 &u, Float4 &v, Float4 &w, Float &lod, bool secondLOD); 50 void sampleFloatFilter(Pointer<Byte> &texture, Vector4f &c, Float4 &u, Float4 &v, Float4 &w, Float &lod, Float &anisotropy, Float4 &uDelta, Float4 &vDelta, Int face[4], SamplerMethod method); 51 void sampleFloatAniso(Pointer<Byte> &texture, Vector4f &c, Float4 &u, Float4 &v, Float4 &w, Float &lod, Float &anisotropy, Float4 &uDelta, Float4 &vDelta, Int face[4], bool secondLOD, SamplerMethod method); 52 void sampleFloat(Pointer<Byte> &texture, Vector4f &c, Float4 &u, Float4 &v, Float4 &w, Float &lod, Int face[4], bool secondLOD); 53 void sampleFloat2D(Pointer<Byte> &texture, Vector4f &c, Float4 &u, Float4 &v, Float4 &w, Float &lod, Int face[4], bool secondLOD); 54 void sampleFloat3D(Pointer<Byte> &texture, Vector4f &c, Float4 &u, Float4 &v, Float4 &w, Float &lod, bool secondLOD); 55 void computeLod(Pointer<Byte> &texture, Float &lod, Float &anisotropy, Float4 &uDelta, Float4 &vDelta, Float4 &u, Float4 &v, const Float &lodBias, Vector4f &dsx, Vector4f &dsy, SamplerMethod method); 56 void computeLodCube(Pointer<Byte> &texture, Float &lod, Float4 &x, Float4 &y, Float4 &z, const Float &lodBias, Vector4f &dsx, Vector4f &dsy, SamplerMethod method); 57 void computeLod3D(Pointer<Byte> &texture, Float &lod, Float4 &u, Float4 &v, Float4 &w, const Float &lodBias, Vector4f &dsx, Vector4f &dsy, SamplerMethod method); 58 void cubeFace(Int face[4], Float4 &U, Float4 &V, Float4 &lodX, Float4 &lodY, Float4 &lodZ, Float4 &x, Float4 &y, Float4 &z); 59 void computeIndices(Int index[4], Short4 uuuu, Short4 vvvv, Short4 wwww, const Pointer<Byte> &mipmap); 60 void sampleTexel(Vector4s &c, Short4 &u, Short4 &v, Short4 &s, Pointer<Byte> &mipmap, Pointer<Byte> buffer[4]); 61 void sampleTexel(Vector4f &c, Short4 &u, Short4 &v, Short4 &s, Float4 &z, Pointer<Byte> &mipmap, Pointer<Byte> buffer[4]); 62 void selectMipmap(Pointer<Byte> &texture, Pointer<Byte> buffer[4], Pointer<Byte> &mipmap, Float &lod, Int face[4], bool secondLOD); 63 Short4 address(Float4 &uw, AddressingMode addressingMode, Pointer<Byte>& mipmap); 64 65 void convertFixed12(Short4 &ci, Float4 &cf); 66 void convertFixed12(Vector4s &cs, Vector4f &cf); 67 void convertSigned12(Float4 &cf, Short4 &ci); 68 void convertSigned15(Float4 &cf, Short4 &ci); 69 void convertUnsigned16(Float4 &cf, Short4 &ci); 70 void sRGBtoLinear16_8_12(Short4 &c); 71 void sRGBtoLinear16_6_12(Short4 &c); 72 void sRGBtoLinear16_5_12(Short4 &c); 73 74 bool hasFloatTexture() const; 75 bool hasUnsignedTextureComponent(int component) const; 76 int textureComponentCount() const; 77 bool has16bitTextureFormat() const; 78 bool has8bitTextureComponents() const; 79 bool has16bitTextureComponents() const; 80 bool hasYuvFormat() const; 81 bool isRGBComponent(int component) const; 82 83 Pointer<Byte> &constants; 84 const Sampler::State &state; 85 }; 86 } 87 88 #endif // sw_SamplerCore_hpp 89
