Jarkko Poyry | 3c82736 | 2014-09-02 11:48:52 +0300 | [diff] [blame] | 1 | /*------------------------------------------------------------------------- |
| 2 | * drawElements Quality Program Random Shader Generator |
| 3 | * ---------------------------------------------------- |
| 4 | * |
| 5 | * Copyright 2014 The Android Open Source Project |
| 6 | * |
| 7 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 8 | * you may not use this file except in compliance with the License. |
| 9 | * You may obtain a copy of the License at |
| 10 | * |
| 11 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 12 | * |
| 13 | * Unless required by applicable law or agreed to in writing, software |
| 14 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 16 | * See the License for the specific language governing permissions and |
| 17 | * limitations under the License. |
| 18 | * |
| 19 | *//*! |
| 20 | * \file |
| 21 | * \brief Shader Class. |
| 22 | *//*--------------------------------------------------------------------*/ |
| 23 | |
| 24 | #include "rsgShader.hpp" |
| 25 | |
| 26 | using std::vector; |
| 27 | |
| 28 | namespace rsg |
| 29 | { |
| 30 | |
| 31 | namespace |
| 32 | { |
| 33 | |
| 34 | template <typename T> |
| 35 | void deleteVectorElements (std::vector<T*>& vec) |
| 36 | { |
| 37 | for (typename std::vector<T*>::iterator i = vec.begin(); i != vec.end(); i++) |
| 38 | delete *i; |
| 39 | vec.clear(); |
| 40 | } |
| 41 | |
| 42 | } // anonymous |
| 43 | |
| 44 | Function::Function (void) |
| 45 | { |
| 46 | } |
| 47 | |
| 48 | Function::Function (const char* name) |
| 49 | : m_name(name) |
| 50 | { |
| 51 | } |
| 52 | |
| 53 | Function::~Function (void) |
| 54 | { |
| 55 | deleteVectorElements(m_parameters); |
| 56 | } |
| 57 | |
| 58 | ShaderInput::ShaderInput (const Variable* variable, ConstValueRangeAccess valueRange) |
| 59 | : m_variable (variable) |
| 60 | , m_min (variable->getType().getScalarSize()) |
| 61 | , m_max (variable->getType().getScalarSize()) |
| 62 | { |
| 63 | ValueAccess(variable->getType(), &m_min[0]) = valueRange.getMin().value(); |
| 64 | ValueAccess(variable->getType(), &m_max[0]) = valueRange.getMax().value(); |
| 65 | } |
| 66 | |
| 67 | Shader::Shader (Type type) |
| 68 | : m_type (type) |
| 69 | , m_mainFunction ("main") |
| 70 | { |
| 71 | } |
| 72 | |
| 73 | Shader::~Shader (void) |
| 74 | { |
| 75 | deleteVectorElements(m_functions); |
| 76 | deleteVectorElements(m_globalStatements); |
| 77 | deleteVectorElements(m_inputs); |
| 78 | deleteVectorElements(m_uniforms); |
| 79 | } |
| 80 | |
| 81 | void Shader::getOutputs (vector<const Variable*>& outputs) const |
| 82 | { |
| 83 | outputs.clear(); |
| 84 | const vector<Variable*>& globalVars = m_globalScope.getDeclaredVariables(); |
| 85 | for (vector<Variable*>::const_iterator i = globalVars.begin(); i != globalVars.end(); i++) |
| 86 | { |
| 87 | const Variable* var = *i; |
| 88 | if (var->getStorage() == Variable::STORAGE_SHADER_OUT) |
| 89 | outputs.push_back(var); |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | void Shader::tokenize (GeneratorState& state, TokenStream& str) const |
| 94 | { |
| 95 | // Add default precision for float in fragment shaders \todo [pyry] Proper precision handling |
| 96 | if (state.getShader().getType() == Shader::TYPE_FRAGMENT) |
| 97 | str << Token::PRECISION << Token::MEDIUM_PRECISION << Token::FLOAT << Token::SEMICOLON << Token::NEWLINE; |
| 98 | |
| 99 | // Tokenize global declaration statements |
| 100 | for (int ndx = (int)m_globalStatements.size()-1; ndx >= 0; ndx--) |
| 101 | m_globalStatements[ndx]->tokenize(state, str); |
| 102 | |
| 103 | // Tokenize all functions |
| 104 | for (int ndx = (int)m_functions.size()-1; ndx >= 0; ndx--) |
| 105 | { |
| 106 | str << Token::NEWLINE; |
| 107 | m_functions[ndx]->tokenize(state, str); |
| 108 | } |
| 109 | |
| 110 | // Tokenize main |
| 111 | str << Token::NEWLINE; |
| 112 | m_mainFunction.tokenize(state, str); |
| 113 | } |
| 114 | |
| 115 | void Shader::execute (ExecutionContext& execCtx) const |
| 116 | { |
| 117 | // Execute global statements (declarations) |
| 118 | for (vector<Statement*>::const_reverse_iterator i = m_globalStatements.rbegin(); i != m_globalStatements.rend(); i++) |
| 119 | (*i)->execute(execCtx); |
| 120 | |
| 121 | // \todo [2011-03-08 pyry] Proper function calls |
| 122 | m_mainFunction.getBody().execute(execCtx); |
| 123 | } |
| 124 | |
| 125 | void Function::tokenize (GeneratorState& state, TokenStream& str) const |
| 126 | { |
| 127 | // Return type |
| 128 | m_returnType.tokenizeShortType(str); |
| 129 | |
| 130 | // Function name |
| 131 | DE_ASSERT(m_name != ""); |
| 132 | str << Token(m_name.c_str()); |
| 133 | |
| 134 | // Parameters |
| 135 | str << Token::LEFT_PAREN; |
| 136 | |
| 137 | for (vector<Variable*>::const_iterator i = m_parameters.begin(); i != m_parameters.end(); i++) |
| 138 | { |
| 139 | if (i != m_parameters.begin()) |
| 140 | str << Token::COMMA; |
| 141 | (*i)->tokenizeDeclaration(state, str); |
| 142 | } |
| 143 | |
| 144 | str << Token::RIGHT_PAREN << Token::NEWLINE; |
| 145 | |
| 146 | // Tokenize body |
| 147 | m_functionBlock.tokenize(state, str); |
| 148 | } |
| 149 | |
| 150 | } // rsg |