Jarkko Poyry | 3c82736 | 2014-09-02 11:48:52 +0300 | [diff] [blame] | 1 | #ifndef _RSGEXPRESSION_HPP |
| 2 | #define _RSGEXPRESSION_HPP |
| 3 | /*------------------------------------------------------------------------- |
| 4 | * drawElements Quality Program Random Shader Generator |
| 5 | * ---------------------------------------------------- |
| 6 | * |
| 7 | * Copyright 2014 The Android Open Source Project |
| 8 | * |
| 9 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 10 | * you may not use this file except in compliance with the License. |
| 11 | * You may obtain a copy of the License at |
| 12 | * |
| 13 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 14 | * |
| 15 | * Unless required by applicable law or agreed to in writing, software |
| 16 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 17 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 18 | * See the License for the specific language governing permissions and |
| 19 | * limitations under the License. |
| 20 | * |
| 21 | *//*! |
| 22 | * \file |
| 23 | * \brief Expressions. |
| 24 | * |
| 25 | * Creating expressions: |
| 26 | * + Children must be created in in reverse evaluation order. |
| 27 | * - Must be tokenized / evaluated taking that order in account. |
| 28 | * |
| 29 | * Evaluation: |
| 30 | * + Done recursively. (Do we have enough stack?) |
| 31 | * + R-values: Nodes must implement getValue() in some way. Value |
| 32 | * must be valid after evaluate(). |
| 33 | * + L-values: Valid writable value access proxy must be returned after |
| 34 | * evaluate(). |
| 35 | *//*--------------------------------------------------------------------*/ |
| 36 | |
| 37 | #include "rsgDefs.hpp" |
| 38 | #include "rsgGeneratorState.hpp" |
| 39 | #include "rsgVariableValue.hpp" |
| 40 | #include "rsgVariable.hpp" |
| 41 | #include "rsgVariableManager.hpp" |
| 42 | #include "rsgExecutionContext.hpp" |
| 43 | |
| 44 | namespace rsg |
| 45 | { |
| 46 | |
| 47 | // \todo [2011-06-10 pyry] Declare in ShaderParameters? |
| 48 | const float unusedValueWeight = 0.05f; |
| 49 | |
| 50 | class Expression |
| 51 | { |
| 52 | public: |
| 53 | virtual ~Expression (void); |
| 54 | |
| 55 | // Shader generation API |
| 56 | virtual Expression* createNextChild (GeneratorState& state) = DE_NULL; |
| 57 | virtual void tokenize (GeneratorState& state, TokenStream& str) const = DE_NULL; |
| 58 | |
| 59 | // Execution API |
| 60 | virtual void evaluate (ExecutionContext& ctx) = DE_NULL; |
| 61 | virtual ExecConstValueAccess getValue (void) const = DE_NULL; |
| 62 | virtual ExecValueAccess getLValue (void) const { DE_ASSERT(DE_FALSE); throw Exception("Expression::getLValue(): not L-value node"); } |
| 63 | |
| 64 | static Expression* createRandom (GeneratorState& state, ConstValueRangeAccess valueRange); |
| 65 | static Expression* createRandomLValue (GeneratorState& state, ConstValueRangeAccess valueRange); |
| 66 | }; |
| 67 | |
| 68 | class VariableAccess : public Expression |
| 69 | { |
| 70 | public: |
| 71 | virtual ~VariableAccess (void) {} |
| 72 | |
| 73 | Expression* createNextChild (GeneratorState& state) { DE_UNREF(state); return DE_NULL; } |
| 74 | void tokenize (GeneratorState& state, TokenStream& str) const { DE_UNREF(state); str << Token(m_variable->getName()); } |
| 75 | |
| 76 | void evaluate (ExecutionContext& ctx); |
| 77 | ExecConstValueAccess getValue (void) const { return m_valueAccess; } |
| 78 | ExecValueAccess getLValue (void) const { return m_valueAccess; } |
| 79 | |
| 80 | protected: |
| 81 | VariableAccess (void) : m_variable(DE_NULL) {} |
| 82 | |
| 83 | const Variable* m_variable; |
| 84 | ExecValueAccess m_valueAccess; |
| 85 | }; |
| 86 | |
| 87 | class VariableRead : public VariableAccess |
| 88 | { |
| 89 | public: |
| 90 | VariableRead (GeneratorState& state, ConstValueRangeAccess valueRange); |
| 91 | VariableRead (const Variable* variable); |
| 92 | virtual ~VariableRead (void) {} |
| 93 | |
| 94 | static float getWeight (const GeneratorState& state, ConstValueRangeAccess valueRange); |
| 95 | }; |
| 96 | |
| 97 | class VariableWrite : public VariableAccess |
| 98 | { |
| 99 | public: |
| 100 | VariableWrite (GeneratorState& state, ConstValueRangeAccess valueRange); |
| 101 | virtual ~VariableWrite (void) {} |
| 102 | |
| 103 | static float getWeight (const GeneratorState& state, ConstValueRangeAccess valueRange); |
| 104 | }; |
| 105 | |
| 106 | class FloatLiteral : public Expression |
| 107 | { |
| 108 | public: |
| 109 | FloatLiteral (GeneratorState& state, ConstValueRangeAccess valueRange); |
| 110 | virtual ~FloatLiteral (void) {} |
| 111 | |
| 112 | Expression* createNextChild (GeneratorState& state) { DE_UNREF(state); return DE_NULL; } |
| 113 | void tokenize (GeneratorState& state, TokenStream& str) const; |
| 114 | |
| 115 | static float getWeight (const GeneratorState& state, ConstValueRangeAccess valueRange); |
| 116 | |
| 117 | void evaluate (ExecutionContext& ctx) { DE_UNREF(ctx); } |
| 118 | ExecConstValueAccess getValue (void) const { return m_value.getValue(VariableType::getScalarType(VariableType::TYPE_FLOAT)); } |
| 119 | |
| 120 | private: |
| 121 | ExecValueStorage m_value; |
| 122 | }; |
| 123 | |
| 124 | class IntLiteral : public Expression |
| 125 | { |
| 126 | public: |
| 127 | IntLiteral (GeneratorState& state, ConstValueRangeAccess valueRange); |
| 128 | virtual ~IntLiteral (void) {} |
| 129 | |
| 130 | Expression* createNextChild (GeneratorState& state) { DE_UNREF(state); return DE_NULL; } |
| 131 | void tokenize (GeneratorState& state, TokenStream& str) const; |
| 132 | |
| 133 | static float getWeight (const GeneratorState& state, ConstValueRangeAccess valueRange); |
| 134 | |
| 135 | void evaluate (ExecutionContext& ctx) { DE_UNREF(ctx); } |
| 136 | ExecConstValueAccess getValue (void) const { return m_value.getValue(VariableType::getScalarType(VariableType::TYPE_INT)); } |
| 137 | |
| 138 | private: |
| 139 | ExecValueStorage m_value; |
| 140 | }; |
| 141 | |
| 142 | class BoolLiteral : public Expression |
| 143 | { |
| 144 | public: |
| 145 | BoolLiteral (GeneratorState& state, ConstValueRangeAccess valueRange); |
| 146 | virtual ~BoolLiteral (void) {} |
| 147 | |
| 148 | Expression* createNextChild (GeneratorState& state) { DE_UNREF(state); return DE_NULL; } |
| 149 | void tokenize (GeneratorState& state, TokenStream& str) const; |
| 150 | |
| 151 | static float getWeight (const GeneratorState& state, ConstValueRangeAccess valueRange); |
| 152 | |
| 153 | void evaluate (ExecutionContext& ctx) { DE_UNREF(ctx); } |
| 154 | ExecConstValueAccess getValue (void) const { return m_value.getValue(VariableType::getScalarType(VariableType::TYPE_BOOL)); } |
| 155 | |
| 156 | private: |
| 157 | ExecValueStorage m_value; |
| 158 | }; |
| 159 | |
| 160 | class ConstructorOp : public Expression |
| 161 | { |
| 162 | public: |
| 163 | ConstructorOp (GeneratorState& state, ConstValueRangeAccess valueRange); |
| 164 | virtual ~ConstructorOp (void); |
| 165 | |
| 166 | Expression* createNextChild (GeneratorState& state); |
| 167 | void tokenize (GeneratorState& state, TokenStream& str) const; |
| 168 | |
| 169 | static float getWeight (const GeneratorState& state, ConstValueRangeAccess valueRange); |
| 170 | |
| 171 | void evaluate (ExecutionContext& ctx); |
| 172 | ExecConstValueAccess getValue (void) const { return m_value.getValue(m_valueRange.getType()); } |
| 173 | |
| 174 | private: |
| 175 | ValueRange m_valueRange; |
| 176 | ExecValueStorage m_value; |
| 177 | |
| 178 | std::vector<ValueRange> m_inputValueRanges; |
| 179 | std::vector<Expression*> m_inputExpressions; |
| 180 | }; |
| 181 | |
| 182 | class AssignOp : public Expression |
| 183 | { |
| 184 | public: |
| 185 | AssignOp (GeneratorState& state, ConstValueRangeAccess valueRange); |
| 186 | virtual ~AssignOp (void); |
| 187 | |
| 188 | Expression* createNextChild (GeneratorState& state); |
| 189 | void tokenize (GeneratorState& state, TokenStream& str) const; |
| 190 | |
| 191 | static float getWeight (const GeneratorState& state, ConstValueRangeAccess valueRange); |
| 192 | |
| 193 | // \todo [2011-02-28 pyry] LValue variant of AssignOp |
| 194 | // static float getLValueWeight (const GeneratorState& state, ConstValueRangeAccess valueRange); |
| 195 | |
| 196 | void evaluate (ExecutionContext& ctx); |
| 197 | ExecConstValueAccess getValue (void) const { return m_value.getValue(m_valueRange.getType()); } |
| 198 | |
| 199 | private: |
| 200 | ValueRange m_valueRange; |
| 201 | ExecValueStorage m_value; |
| 202 | |
| 203 | Expression* m_lvalueExpr; |
| 204 | Expression* m_rvalueExpr; |
| 205 | }; |
| 206 | |
| 207 | class ParenOp : public Expression |
| 208 | { |
| 209 | public: |
| 210 | ParenOp (GeneratorState& state, ConstValueRangeAccess valueRange); |
| 211 | virtual ~ParenOp (void); |
| 212 | |
| 213 | Expression* createNextChild (GeneratorState& state); |
| 214 | void tokenize (GeneratorState& state, TokenStream& str) const; |
| 215 | |
| 216 | static float getWeight (const GeneratorState& state, ConstValueRangeAccess valueRange); |
| 217 | |
| 218 | void evaluate (ExecutionContext& execCtx) { m_child->evaluate(execCtx); } |
| 219 | ExecConstValueAccess getValue (void) const { return m_child->getValue(); } |
| 220 | |
| 221 | private: |
| 222 | ValueRange m_valueRange; |
| 223 | Expression* m_child; |
| 224 | }; |
| 225 | |
| 226 | class SwizzleOp : public Expression |
| 227 | { |
| 228 | public: |
| 229 | SwizzleOp (GeneratorState& state, ConstValueRangeAccess valueRange); |
| 230 | virtual ~SwizzleOp (void); |
| 231 | |
| 232 | Expression* createNextChild (GeneratorState& state); |
| 233 | void tokenize (GeneratorState& state, TokenStream& str) const; |
| 234 | |
| 235 | static float getWeight (const GeneratorState& state, ConstValueRangeAccess valueRange); |
| 236 | |
| 237 | void evaluate (ExecutionContext& execCtx); |
| 238 | ExecConstValueAccess getValue (void) const { return m_value.getValue(m_outValueRange.getType()); } |
| 239 | |
| 240 | private: |
| 241 | ValueRange m_outValueRange; |
| 242 | int m_numInputElements; |
| 243 | deUint8 m_swizzle[4]; |
| 244 | Expression* m_child; |
| 245 | ExecValueStorage m_value; |
| 246 | }; |
| 247 | |
| 248 | class TexLookup : public Expression |
| 249 | { |
| 250 | public: |
| 251 | TexLookup (GeneratorState& state, ConstValueRangeAccess valueRange); |
| 252 | virtual ~TexLookup (void); |
| 253 | |
| 254 | Expression* createNextChild (GeneratorState& state); |
| 255 | void tokenize (GeneratorState& state, TokenStream& str) const; |
| 256 | |
| 257 | static float getWeight (const GeneratorState& state, ConstValueRangeAccess valueRange); |
| 258 | |
| 259 | void evaluate (ExecutionContext& execCtx); |
| 260 | ExecConstValueAccess getValue (void) const { return m_value.getValue(m_valueType); } |
| 261 | |
| 262 | private: |
| 263 | enum Type |
| 264 | { |
| 265 | TYPE_TEXTURE2D, |
| 266 | TYPE_TEXTURE2D_LOD, |
| 267 | TYPE_TEXTURE2D_PROJ, |
| 268 | TYPE_TEXTURE2D_PROJ_LOD, |
| 269 | |
| 270 | TYPE_TEXTURECUBE, |
| 271 | TYPE_TEXTURECUBE_LOD, |
| 272 | |
| 273 | TYPE_LAST |
| 274 | }; |
| 275 | |
| 276 | Type m_type; |
| 277 | const Variable* m_sampler; |
| 278 | Expression* m_coordExpr; |
| 279 | Expression* m_lodBiasExpr; |
| 280 | VariableType m_valueType; |
| 281 | ExecValueStorage m_value; |
| 282 | }; |
| 283 | |
| 284 | } // rsg |
| 285 | |
| 286 | #endif // _RSGEXPRESSION_HPP |