| // Copyright 2016 The SwiftShader Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #ifndef sw_VertexShader_hpp |
| #define sw_VertexShader_hpp |
| |
| #include "Shader.hpp" |
| #include "Main/Config.hpp" |
| |
| namespace sw |
| { |
| class VertexShader : public Shader |
| { |
| public: |
| enum AttribType : unsigned char |
| { |
| ATTRIBTYPE_FLOAT, |
| ATTRIBTYPE_INT, |
| ATTRIBTYPE_UINT, |
| |
| ATTRIBTYPE_LAST = ATTRIBTYPE_UINT |
| }; |
| |
| explicit VertexShader(const VertexShader *vs = 0); |
| explicit VertexShader(const unsigned long *token); |
| |
| virtual ~VertexShader(); |
| |
| static int validate(const unsigned long *const token); // Returns number of instructions if valid |
| bool containsTextureSampling() const; |
| |
| void setInput(int inputIdx, const Semantic& semantic, AttribType attribType = ATTRIBTYPE_FLOAT); |
| void setOutput(int outputIdx, int nbComponents, const Semantic& semantic); |
| void setPositionRegister(int posReg); |
| void setPointSizeRegister(int ptSizeReg); |
| void declareInstanceId() { instanceIdDeclared = true; } |
| void declareVertexId() { vertexIdDeclared = true; } |
| |
| const Semantic& getInput(int inputIdx) const; |
| const Semantic& getOutput(int outputIdx, int component) const; |
| AttribType getAttribType(int inputIndex) const; |
| int getPositionRegister() const { return positionRegister; } |
| int getPointSizeRegister() const { return pointSizeRegister; } |
| bool isInstanceIdDeclared() const { return instanceIdDeclared; } |
| bool isVertexIdDeclared() const { return vertexIdDeclared; } |
| |
| private: |
| void analyze(); |
| void analyzeInput(); |
| void analyzeOutput(); |
| void analyzeTextureSampling(); |
| |
| Semantic input[MAX_VERTEX_INPUTS]; |
| Semantic output[MAX_VERTEX_OUTPUTS][4]; |
| |
| AttribType attribType[MAX_VERTEX_INPUTS]; |
| |
| int positionRegister; |
| int pointSizeRegister; |
| |
| bool instanceIdDeclared; |
| bool vertexIdDeclared; |
| bool textureSampling; |
| }; |
| } |
| |
| #endif // sw_VertexShader_hpp |