src/Shader/VertexRoutine.hpp

   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_VertexRoutine_hpp
  16 #define sw_VertexRoutine_hpp
  17
  18 #include "Renderer/Color.hpp"
  19 #include "Renderer/VertexProcessor.hpp"
  20 #include "ShaderCore.hpp"
  21 #include "VertexShader.hpp"
  22
  23 namespace sw
  24 {
  25         class VertexRoutinePrototype : public Function<Void(Pointer<Byte>, Pointer<Byte>, Pointer<Byte>, Pointer<Byte>)>
  26         {
  27         public:
  28                 VertexRoutinePrototype() : vertex(Arg<0>()), batch(Arg<1>()), task(Arg<2>()), data(Arg<3>()) {}
  29                 virtual ~VertexRoutinePrototype() {};
  30
  31         protected:
  32                 Pointer<Byte> vertex;
  33                 Pointer<Byte> batch;
  34                 Pointer<Byte> task;
  35                 Pointer<Byte> data;
  36         };
  37
  38         class VertexRoutine : public VertexRoutinePrototype
  39         {
  40         public:
  41                 VertexRoutine(const VertexProcessor::State &state, const VertexShader *shader);
  42                 virtual ~VertexRoutine();
  43
  44                 void generate();
  45
  46         protected:
  47                 Pointer<Byte> constants;
  48
  49                 Int clipFlags;
  50
  51                 RegisterArray<MAX_VERTEX_INPUTS> v;    // Input registers
  52                 RegisterArray<MAX_VERTEX_OUTPUTS> o;   // Output registers
  53
  54                 const VertexProcessor::State &state;
  55
  56         private:
  57                 virtual void pipeline() = 0;
  58
  59                 typedef VertexProcessor::State::Input Stream;
  60
  61                 Vector4f readStream(Pointer<Byte> &buffer, UInt &stride, const Stream &stream, const UInt &index);
  62                 void readInput(UInt &index);
  63                 void computeClipFlags();
  64                 void postTransform();
  65                 void writeCache(Pointer<Byte> &cacheLine);
  66                 void writeVertex(const Pointer<Byte> &vertex, Pointer<Byte> &cacheLine);
  67                 void transformFeedback(const Pointer<Byte> &vertex, const UInt &primitiveNumber, const UInt &indexInPrimitive);
  68         };
  69 }
  70
  71 #endif   // sw_VertexRoutine_hpp