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_QuadRasterizer_hpp 16 #define sw_QuadRasterizer_hpp 17 18 #include "Rasterizer.hpp" 19 #include "Pipeline/ShaderCore.hpp" 20 #include "Pipeline/SpirvShader.hpp" 21 #include "System/Types.hpp" 22 23 namespace sw { 24 25 class QuadRasterizer : public Rasterizer 26 { 27 public: 28 QuadRasterizer(const PixelProcessor::State &state, SpirvShader const *spirvShader); 29 virtual ~QuadRasterizer(); 30 31 void generate(); 32 33 protected: 34 Pointer<Byte> constants; 35 36 Float4 Dz[4]; 37 Float4 Dw; 38 Float4 Dv[MAX_INTERFACE_COMPONENTS]; 39 Float4 Df; 40 Float4 DclipDistance[MAX_CLIP_DISTANCES]; 41 Float4 DcullDistance[MAX_CULL_DISTANCES]; 42 43 UInt occlusion; 44 45 virtual void quad(Pointer<Byte> cBuffer[4], Pointer<Byte> &zBuffer, Pointer<Byte> &sBuffer, Int cMask[4], Int &x, Int &y) = 0; 46 47 bool interpolateZ() const; 48 bool interpolateW() const; 49 Float4 interpolate(Float4 &x, Float4 &D, Float4 &rhw, Pointer<Byte> planeEquation, bool flat, bool perspective); 50 51 const PixelProcessor::State &state; 52 const SpirvShader *const spirvShader; 53 54 private: 55 void rasterize(Int &yMin, Int &yMax); 56 }; 57 58 } // namespace sw 59 60 #endif // sw_QuadRasterizer_hpp 61