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_PixelRoutine_hpp 16 #define sw_PixelRoutine_hpp 17 18 #include "Device/QuadRasterizer.hpp" 19 20 namespace sw { 21 22 class PixelShader; 23 class SamplerCore; 24 25 class PixelRoutine : public sw::QuadRasterizer 26 { 27 public: 28 PixelRoutine(const PixelProcessor::State &state, 29 vk::PipelineLayout const *pipelineLayout, 30 SpirvShader const *spirvShader, 31 const vk::DescriptorSet::Bindings &descriptorSets); 32 33 virtual ~PixelRoutine(); 34 35 protected: 36 Float4 z[4]; // Multisampled z 37 Float4 w; // Used as is 38 Float4 rhw; // Reciprocal w 39 40 SpirvRoutine routine; 41 const vk::DescriptorSet::Bindings &descriptorSets; 42 43 // Depth output 44 Float4 oDepth; 45 46 virtual void setBuiltins(Int &x, Int &y, Float4 (&z)[4], Float4 &w, Int cMask[4]) = 0; 47 virtual void applyShader(Int cMask[4], Int sMask[4], Int zMask[4]) = 0; 48 virtual Bool alphaTest(Int cMask[4]) = 0; 49 virtual void rasterOperation(Pointer<Byte> cBuffer[4], Int &x, Int sMask[4], Int zMask[4], Int cMask[4]) = 0; 50 51 void quad(Pointer<Byte> cBuffer[4], Pointer<Byte> &zBuffer, Pointer<Byte> &sBuffer, Int cMask[4], Int &x, Int &y) override; 52 53 void alphaTest(Int &aMask, const Short4 &alpha); 54 void alphaToCoverage(Int cMask[4], const Float4 &alpha); 55 56 // Raster operations 57 void alphaBlend(int index, const Pointer<Byte> &cBuffer, Vector4s ¤t, const Int &x); 58 void writeColor(int index, const Pointer<Byte> &cBuffer, const Int &x, Vector4f &oC, const Int &sMask, const Int &zMask, const Int &cMask); 59 void alphaBlend(int index, const Pointer<Byte> &cBuffer, Vector4f &oC, const Int &x); 60 void writeColor(int index, const Pointer<Byte> &cBuffer, const Int &x, Vector4s ¤t, const Int &sMask, const Int &zMask, const Int &cMask); 61 62 bool isSRGB(int index) const; 63 UShort4 convertFixed16(const Float4 &cf, bool saturate = true); 64 void linearToSRGB12_16(Vector4s &c); 65 66 private: 67 Float4 interpolateCentroid(const Float4 &x, const Float4 &y, const Float4 &rhw, Pointer<Byte> planeEquation, bool flat, bool perspective); 68 Byte8 stencilReplaceRef(bool isBack); 69 void stencilTest(const Pointer<Byte> &sBuffer, int q, const Int &x, Int &sMask, const Int &cMask); 70 void stencilTest(Byte8 &value, VkCompareOp stencilCompareMode, bool isBack); 71 void stencilOperation(Byte8 &newValue, const Byte8 &bufferValue, const PixelProcessor::States::StencilOpState &ops, bool isBack, const Int &zMask, const Int &sMask); 72 void stencilOperation(Byte8 &output, const Byte8 &bufferValue, VkStencilOp operation, bool isBack); 73 Bool depthTest(const Pointer<Byte> &zBuffer, int q, const Int &x, const Float4 &z, const Int &sMask, Int &zMask, const Int &cMask); 74 75 // Raster operations 76 void blendFactor(Vector4s &blendFactor, const Vector4s ¤t, const Vector4s &pixel, VkBlendFactor blendFactorActive); 77 void blendFactorAlpha(Vector4s &blendFactor, const Vector4s ¤t, const Vector4s &pixel, VkBlendFactor blendFactorAlphaActive); 78 void readPixel(int index, const Pointer<Byte> &cBuffer, const Int &x, Vector4s &pixel); 79 void blendFactor(Vector4f &blendFactor, const Vector4f &oC, const Vector4f &pixel, VkBlendFactor blendFactorActive); 80 void blendFactorAlpha(Vector4f &blendFactor, const Vector4f &oC, const Vector4f &pixel, VkBlendFactor blendFactorAlphaActive); 81 void writeStencil(Pointer<Byte> &sBuffer, int q, const Int &x, const Int &sMask, const Int &zMask, const Int &cMask); 82 void writeDepth(Pointer<Byte> &zBuffer, int q, const Int &x, const Float4 &z, const Int &zMask); 83 84 void sRGBtoLinear16_12_16(Vector4s &c); 85 void linearToSRGB16_12_16(Vector4s &c); 86 Float4 sRGBtoLinear(const Float4 &x); 87 88 Bool depthTest32F(const Pointer<Byte> &zBuffer, int q, const Int &x, const Float4 &z, const Int &sMask, Int &zMask, const Int &cMask); 89 Bool depthTest16(const Pointer<Byte> &zBuffer, int q, const Int &x, const Float4 &z, const Int &sMask, Int &zMask, const Int &cMask); 90 91 void writeDepth32F(Pointer<Byte> &zBuffer, int q, const Int &x, const Float4 &z, const Int &zMask); 92 void writeDepth16(Pointer<Byte> &zBuffer, int q, const Int &x, const Float4 &z, const Int &zMask); 93 }; 94 95 } // namespace sw 96 97 #endif // sw_PixelRoutine_hpp 98