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 Variable class. |
| 22 | *//*--------------------------------------------------------------------*/ |
| 23 | |
| 24 | #include "rsgVariable.hpp" |
| 25 | #include "rsgGeneratorState.hpp" |
| 26 | #include "rsgShader.hpp" |
| 27 | |
| 28 | namespace rsg |
| 29 | { |
| 30 | |
| 31 | Variable::Variable (const VariableType& type, Storage storage, const char* name) |
| 32 | : m_type (type) |
| 33 | , m_storage (storage) |
| 34 | , m_name (name) |
| 35 | , m_layoutLocation (-1) |
| 36 | { |
| 37 | } |
| 38 | |
| 39 | Variable::~Variable (void) |
| 40 | { |
| 41 | } |
| 42 | |
| 43 | void Variable::tokenizeDeclaration (GeneratorState& state, TokenStream& str) const |
| 44 | { |
| 45 | Version targetVersion = state.getProgramParameters().version; |
| 46 | |
| 47 | // \todo [2011-03-10 pyry] Remove precision hacks once precision handling is implemented |
| 48 | switch (m_storage) |
| 49 | { |
| 50 | case STORAGE_CONST: str << Token::CONST; break; |
| 51 | case STORAGE_PARAMETER_IN: str << Token::IN; break; |
| 52 | case STORAGE_PARAMETER_OUT: str << Token::OUT; break; |
| 53 | case STORAGE_PARAMETER_INOUT: str << Token::INOUT; break; |
| 54 | |
| 55 | case STORAGE_UNIFORM: |
| 56 | { |
| 57 | str << Token::UNIFORM; |
| 58 | if (m_type.isFloatOrVec() || m_type.isIntOrVec()) |
| 59 | str << Token::MEDIUM_PRECISION; |
| 60 | break; |
| 61 | } |
| 62 | |
| 63 | case STORAGE_SHADER_IN: |
| 64 | { |
| 65 | if (targetVersion >= VERSION_300) |
| 66 | { |
| 67 | if (hasLayoutLocation()) |
| 68 | str << Token::LAYOUT << Token::LEFT_PAREN << Token::LOCATION << Token::EQUAL << m_layoutLocation << Token::RIGHT_PAREN; |
| 69 | |
| 70 | str << Token::IN; |
| 71 | |
| 72 | if (state.getShader().getType() == Shader::TYPE_FRAGMENT) |
| 73 | str << Token::MEDIUM_PRECISION; |
| 74 | } |
| 75 | else |
| 76 | { |
| 77 | DE_ASSERT(!hasLayoutLocation()); |
| 78 | |
| 79 | switch (state.getShader().getType()) |
| 80 | { |
| 81 | case Shader::TYPE_VERTEX: str << Token::ATTRIBUTE; break; |
| 82 | case Shader::TYPE_FRAGMENT: str << Token::VARYING << Token::MEDIUM_PRECISION; break; |
| 83 | default: DE_ASSERT(DE_FALSE); break; |
| 84 | } |
| 85 | } |
| 86 | break; |
| 87 | } |
| 88 | |
| 89 | case STORAGE_SHADER_OUT: |
| 90 | { |
| 91 | if (targetVersion >= VERSION_300) |
| 92 | { |
| 93 | if (hasLayoutLocation()) |
| 94 | str << Token::LAYOUT << Token::LEFT_PAREN << Token::LOCATION << Token::EQUAL << m_layoutLocation << Token::RIGHT_PAREN; |
| 95 | |
| 96 | str << Token::OUT << Token::MEDIUM_PRECISION; |
| 97 | } |
| 98 | else |
| 99 | { |
| 100 | DE_ASSERT(!hasLayoutLocation()); |
| 101 | |
| 102 | if (state.getShader().getType() == Shader::TYPE_VERTEX) |
| 103 | str << Token::VARYING << Token::MEDIUM_PRECISION; |
| 104 | else |
| 105 | DE_ASSERT(DE_FALSE); |
| 106 | } |
| 107 | break; |
| 108 | } |
| 109 | |
| 110 | case STORAGE_LOCAL: |
| 111 | default: |
| 112 | /* nothing */ |
| 113 | break; |
| 114 | } |
| 115 | |
| 116 | m_type.tokenizeShortType(str); |
| 117 | |
| 118 | DE_ASSERT(m_name != ""); |
| 119 | str << Token(m_name.c_str()); |
| 120 | } |
| 121 | |
| 122 | } // rsg |