zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 1 | // |
| 2 | // Copyright (c) 2002-2011 The ANGLE Project Authors. All rights reserved. |
| 3 | // Use of this source code is governed by a BSD-style license that can be |
| 4 | // found in the LICENSE file. |
| 5 | // |
| 6 | |
| 7 | #include "compiler/OutputGLSLBase.h" |
| 8 | #include "compiler/debug.h" |
| 9 | |
daniel@transgaming.com | 773ff74 | 2013-01-11 04:12:51 +0000 | [diff] [blame] | 10 | #include <cfloat> |
daniel@transgaming.com | 6c1203f | 2013-01-11 04:12:43 +0000 | [diff] [blame] | 11 | |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 12 | namespace |
| 13 | { |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 14 | TString arrayBrackets(const TType& type) |
| 15 | { |
| 16 | ASSERT(type.isArray()); |
| 17 | TInfoSinkBase out; |
| 18 | out << "[" << type.getArraySize() << "]"; |
| 19 | return TString(out.c_str()); |
| 20 | } |
| 21 | |
| 22 | bool isSingleStatement(TIntermNode* node) { |
| 23 | if (const TIntermAggregate* aggregate = node->getAsAggregate()) |
| 24 | { |
| 25 | return (aggregate->getOp() != EOpFunction) && |
| 26 | (aggregate->getOp() != EOpSequence); |
| 27 | } |
| 28 | else if (const TIntermSelection* selection = node->getAsSelectionNode()) |
| 29 | { |
| 30 | // Ternary operators are usually part of an assignment operator. |
| 31 | // This handles those rare cases in which they are all by themselves. |
| 32 | return selection->usesTernaryOperator(); |
| 33 | } |
| 34 | else if (node->getAsLoopNode()) |
| 35 | { |
| 36 | return false; |
| 37 | } |
| 38 | return true; |
| 39 | } |
| 40 | } // namespace |
| 41 | |
daniel@transgaming.com | 0aa3b5a | 2012-11-28 19:43:24 +0000 | [diff] [blame] | 42 | TOutputGLSLBase::TOutputGLSLBase(TInfoSinkBase& objSink, |
shannon.woods@transgaming.com | 1d432bb | 2013-01-25 21:57:28 +0000 | [diff] [blame] | 43 | ShArrayIndexClampingStrategy clampingStrategy, |
daniel@transgaming.com | 0aa3b5a | 2012-11-28 19:43:24 +0000 | [diff] [blame] | 44 | ShHashFunction64 hashFunction, |
| 45 | NameMap& nameMap, |
| 46 | TSymbolTable& symbolTable) |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 47 | : TIntermTraverser(true, true, true), |
| 48 | mObjSink(objSink), |
daniel@transgaming.com | 0aa3b5a | 2012-11-28 19:43:24 +0000 | [diff] [blame] | 49 | mDeclaringVariables(false), |
shannon.woods@transgaming.com | 1d432bb | 2013-01-25 21:57:28 +0000 | [diff] [blame] | 50 | mClampingStrategy(clampingStrategy), |
daniel@transgaming.com | 0aa3b5a | 2012-11-28 19:43:24 +0000 | [diff] [blame] | 51 | mHashFunction(hashFunction), |
| 52 | mNameMap(nameMap), |
| 53 | mSymbolTable(symbolTable) |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 54 | { |
| 55 | } |
| 56 | |
| 57 | void TOutputGLSLBase::writeTriplet(Visit visit, const char* preStr, const char* inStr, const char* postStr) |
| 58 | { |
| 59 | TInfoSinkBase& out = objSink(); |
| 60 | if (visit == PreVisit && preStr) |
| 61 | { |
| 62 | out << preStr; |
| 63 | } |
| 64 | else if (visit == InVisit && inStr) |
| 65 | { |
| 66 | out << inStr; |
| 67 | } |
| 68 | else if (visit == PostVisit && postStr) |
| 69 | { |
| 70 | out << postStr; |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | void TOutputGLSLBase::writeVariableType(const TType& type) |
| 75 | { |
| 76 | TInfoSinkBase& out = objSink(); |
| 77 | TQualifier qualifier = type.getQualifier(); |
| 78 | // TODO(alokp): Validate qualifier for variable declarations. |
| 79 | if ((qualifier != EvqTemporary) && (qualifier != EvqGlobal)) |
| 80 | out << type.getQualifierString() << " "; |
| 81 | // Declare the struct if we have not done so already. |
Jamie Madill | 98493dd | 2013-07-08 14:39:03 -0400 | [diff] [blame] | 82 | if ((type.getBasicType() == EbtStruct) && !structDeclared(type.getStruct())) |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 83 | { |
Jamie Madill | 98493dd | 2013-07-08 14:39:03 -0400 | [diff] [blame] | 84 | declareStruct(type.getStruct()); |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 85 | } |
| 86 | else |
| 87 | { |
| 88 | if (writeVariablePrecision(type.getPrecision())) |
| 89 | out << " "; |
| 90 | out << getTypeName(type); |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | void TOutputGLSLBase::writeFunctionParameters(const TIntermSequence& args) |
| 95 | { |
| 96 | TInfoSinkBase& out = objSink(); |
| 97 | for (TIntermSequence::const_iterator iter = args.begin(); |
| 98 | iter != args.end(); ++iter) |
| 99 | { |
| 100 | const TIntermSymbol* arg = (*iter)->getAsSymbolNode(); |
| 101 | ASSERT(arg != NULL); |
| 102 | |
| 103 | const TType& type = arg->getType(); |
zmo@google.com | 189be2f | 2011-06-16 18:28:53 +0000 | [diff] [blame] | 104 | writeVariableType(type); |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 105 | |
| 106 | const TString& name = arg->getSymbol(); |
| 107 | if (!name.empty()) |
daniel@transgaming.com | 0aa3b5a | 2012-11-28 19:43:24 +0000 | [diff] [blame] | 108 | out << " " << hashName(name); |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 109 | if (type.isArray()) |
| 110 | out << arrayBrackets(type); |
| 111 | |
| 112 | // Put a comma if this is not the last argument. |
| 113 | if (iter != args.end() - 1) |
| 114 | out << ", "; |
| 115 | } |
| 116 | } |
| 117 | |
| 118 | const ConstantUnion* TOutputGLSLBase::writeConstantUnion(const TType& type, |
| 119 | const ConstantUnion* pConstUnion) |
| 120 | { |
| 121 | TInfoSinkBase& out = objSink(); |
| 122 | |
| 123 | if (type.getBasicType() == EbtStruct) |
| 124 | { |
Jamie Madill | 98493dd | 2013-07-08 14:39:03 -0400 | [diff] [blame] | 125 | const TStructure* structure = type.getStruct(); |
| 126 | out << hashName(structure->name()) << "("; |
| 127 | |
| 128 | const TFieldList& fields = structure->fields(); |
| 129 | for (size_t i = 0; i < fields.size(); ++i) |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 130 | { |
Jamie Madill | 98493dd | 2013-07-08 14:39:03 -0400 | [diff] [blame] | 131 | const TType* fieldType = fields[i]->type(); |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 132 | ASSERT(fieldType != NULL); |
| 133 | pConstUnion = writeConstantUnion(*fieldType, pConstUnion); |
Jamie Madill | 98493dd | 2013-07-08 14:39:03 -0400 | [diff] [blame] | 134 | if (i != fields.size() - 1) out << ", "; |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 135 | } |
| 136 | out << ")"; |
| 137 | } |
| 138 | else |
| 139 | { |
Jamie Madill | 94bf7f2 | 2013-07-08 13:31:15 -0400 | [diff] [blame] | 140 | size_t size = type.getObjectSize(); |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 141 | bool writeType = size > 1; |
| 142 | if (writeType) out << getTypeName(type) << "("; |
Jamie Madill | 94bf7f2 | 2013-07-08 13:31:15 -0400 | [diff] [blame] | 143 | for (size_t i = 0; i < size; ++i, ++pConstUnion) |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 144 | { |
| 145 | switch (pConstUnion->getType()) |
| 146 | { |
daniel@transgaming.com | 6c1203f | 2013-01-11 04:12:43 +0000 | [diff] [blame] | 147 | case EbtFloat: out << std::min(FLT_MAX, std::max(-FLT_MAX, pConstUnion->getFConst())); break; |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 148 | case EbtInt: out << pConstUnion->getIConst(); break; |
| 149 | case EbtBool: out << pConstUnion->getBConst(); break; |
| 150 | default: UNREACHABLE(); |
| 151 | } |
| 152 | if (i != size - 1) out << ", "; |
| 153 | } |
| 154 | if (writeType) out << ")"; |
| 155 | } |
| 156 | return pConstUnion; |
| 157 | } |
| 158 | |
| 159 | void TOutputGLSLBase::visitSymbol(TIntermSymbol* node) |
| 160 | { |
| 161 | TInfoSinkBase& out = objSink(); |
| 162 | if (mLoopUnroll.NeedsToReplaceSymbolWithValue(node)) |
| 163 | out << mLoopUnroll.GetLoopIndexValue(node); |
| 164 | else |
daniel@transgaming.com | 0aa3b5a | 2012-11-28 19:43:24 +0000 | [diff] [blame] | 165 | out << hashVariableName(node->getSymbol()); |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 166 | |
| 167 | if (mDeclaringVariables && node->getType().isArray()) |
| 168 | out << arrayBrackets(node->getType()); |
| 169 | } |
| 170 | |
| 171 | void TOutputGLSLBase::visitConstantUnion(TIntermConstantUnion* node) |
| 172 | { |
| 173 | writeConstantUnion(node->getType(), node->getUnionArrayPointer()); |
| 174 | } |
| 175 | |
| 176 | bool TOutputGLSLBase::visitBinary(Visit visit, TIntermBinary* node) |
| 177 | { |
| 178 | bool visitChildren = true; |
| 179 | TInfoSinkBase& out = objSink(); |
| 180 | switch (node->getOp()) |
| 181 | { |
| 182 | case EOpInitialize: |
| 183 | if (visit == InVisit) |
| 184 | { |
| 185 | out << " = "; |
| 186 | // RHS of initialize is not being declared. |
| 187 | mDeclaringVariables = false; |
| 188 | } |
| 189 | break; |
| 190 | case EOpAssign: writeTriplet(visit, "(", " = ", ")"); break; |
| 191 | case EOpAddAssign: writeTriplet(visit, "(", " += ", ")"); break; |
| 192 | case EOpSubAssign: writeTriplet(visit, "(", " -= ", ")"); break; |
| 193 | case EOpDivAssign: writeTriplet(visit, "(", " /= ", ")"); break; |
| 194 | // Notice the fall-through. |
| 195 | case EOpMulAssign: |
| 196 | case EOpVectorTimesMatrixAssign: |
| 197 | case EOpVectorTimesScalarAssign: |
| 198 | case EOpMatrixTimesScalarAssign: |
| 199 | case EOpMatrixTimesMatrixAssign: |
| 200 | writeTriplet(visit, "(", " *= ", ")"); |
| 201 | break; |
| 202 | |
| 203 | case EOpIndexDirect: |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 204 | writeTriplet(visit, NULL, "[", "]"); |
| 205 | break; |
daniel@transgaming.com | 4167cc9 | 2013-01-11 04:11:53 +0000 | [diff] [blame] | 206 | case EOpIndexIndirect: |
| 207 | if (node->getAddIndexClamp()) |
| 208 | { |
| 209 | if (visit == InVisit) |
| 210 | { |
shannon.woods@transgaming.com | 1d432bb | 2013-01-25 21:57:28 +0000 | [diff] [blame] | 211 | if (mClampingStrategy == SH_CLAMP_WITH_CLAMP_INTRINSIC) { |
| 212 | out << "[int(clamp(float("; |
| 213 | } else { |
| 214 | out << "[webgl_int_clamp("; |
| 215 | } |
daniel@transgaming.com | 4167cc9 | 2013-01-11 04:11:53 +0000 | [diff] [blame] | 216 | } |
| 217 | else if (visit == PostVisit) |
| 218 | { |
| 219 | int maxSize; |
| 220 | TIntermTyped *left = node->getLeft(); |
| 221 | TType leftType = left->getType(); |
| 222 | |
| 223 | if (left->isArray()) |
| 224 | { |
| 225 | // The shader will fail validation if the array length is not > 0. |
| 226 | maxSize = leftType.getArraySize() - 1; |
| 227 | } |
| 228 | else |
| 229 | { |
| 230 | maxSize = leftType.getNominalSize() - 1; |
| 231 | } |
shannon.woods@transgaming.com | 1d432bb | 2013-01-25 21:57:28 +0000 | [diff] [blame] | 232 | |
| 233 | if (mClampingStrategy == SH_CLAMP_WITH_CLAMP_INTRINSIC) { |
| 234 | out << "), 0.0, float(" << maxSize << ")))]"; |
| 235 | } else { |
| 236 | out << ", 0, " << maxSize << ")]"; |
| 237 | } |
daniel@transgaming.com | 4167cc9 | 2013-01-11 04:11:53 +0000 | [diff] [blame] | 238 | } |
| 239 | } |
| 240 | else |
| 241 | { |
| 242 | writeTriplet(visit, NULL, "[", "]"); |
| 243 | } |
| 244 | break; |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 245 | case EOpIndexDirectStruct: |
| 246 | if (visit == InVisit) |
| 247 | { |
Jamie Madill | 98493dd | 2013-07-08 14:39:03 -0400 | [diff] [blame] | 248 | // Here we are writing out "foo.bar", where "foo" is struct |
| 249 | // and "bar" is field. In AST, it is represented as a binary |
| 250 | // node, where left child represents "foo" and right child "bar". |
| 251 | // The node itself represents ".". The struct field "bar" is |
| 252 | // actually stored as an index into TStructure::fields. |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 253 | out << "."; |
Jamie Madill | 98493dd | 2013-07-08 14:39:03 -0400 | [diff] [blame] | 254 | const TStructure* structure = node->getLeft()->getType().getStruct(); |
| 255 | const TIntermConstantUnion* index = node->getRight()->getAsConstantUnion(); |
| 256 | const TField* field = structure->fields()[index->getIConst(0)]; |
daniel@transgaming.com | 97b16d1 | 2013-02-01 03:20:42 +0000 | [diff] [blame] | 257 | |
Jamie Madill | 98493dd | 2013-07-08 14:39:03 -0400 | [diff] [blame] | 258 | TString fieldName = field->name(); |
| 259 | if (!mSymbolTable.findBuiltIn(structure->name())) |
daniel@transgaming.com | 97b16d1 | 2013-02-01 03:20:42 +0000 | [diff] [blame] | 260 | fieldName = hashName(fieldName); |
| 261 | |
| 262 | out << fieldName; |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 263 | visitChildren = false; |
| 264 | } |
| 265 | break; |
| 266 | case EOpVectorSwizzle: |
| 267 | if (visit == InVisit) |
| 268 | { |
| 269 | out << "."; |
| 270 | TIntermAggregate* rightChild = node->getRight()->getAsAggregate(); |
| 271 | TIntermSequence& sequence = rightChild->getSequence(); |
| 272 | for (TIntermSequence::iterator sit = sequence.begin(); sit != sequence.end(); ++sit) |
| 273 | { |
| 274 | TIntermConstantUnion* element = (*sit)->getAsConstantUnion(); |
| 275 | ASSERT(element->getBasicType() == EbtInt); |
| 276 | ASSERT(element->getNominalSize() == 1); |
| 277 | const ConstantUnion& data = element->getUnionArrayPointer()[0]; |
| 278 | ASSERT(data.getType() == EbtInt); |
| 279 | switch (data.getIConst()) |
| 280 | { |
| 281 | case 0: out << "x"; break; |
| 282 | case 1: out << "y"; break; |
| 283 | case 2: out << "z"; break; |
| 284 | case 3: out << "w"; break; |
| 285 | default: UNREACHABLE(); break; |
| 286 | } |
| 287 | } |
| 288 | visitChildren = false; |
| 289 | } |
| 290 | break; |
| 291 | |
| 292 | case EOpAdd: writeTriplet(visit, "(", " + ", ")"); break; |
| 293 | case EOpSub: writeTriplet(visit, "(", " - ", ")"); break; |
| 294 | case EOpMul: writeTriplet(visit, "(", " * ", ")"); break; |
| 295 | case EOpDiv: writeTriplet(visit, "(", " / ", ")"); break; |
| 296 | case EOpMod: UNIMPLEMENTED(); break; |
| 297 | case EOpEqual: writeTriplet(visit, "(", " == ", ")"); break; |
| 298 | case EOpNotEqual: writeTriplet(visit, "(", " != ", ")"); break; |
| 299 | case EOpLessThan: writeTriplet(visit, "(", " < ", ")"); break; |
| 300 | case EOpGreaterThan: writeTriplet(visit, "(", " > ", ")"); break; |
| 301 | case EOpLessThanEqual: writeTriplet(visit, "(", " <= ", ")"); break; |
| 302 | case EOpGreaterThanEqual: writeTriplet(visit, "(", " >= ", ")"); break; |
| 303 | |
| 304 | // Notice the fall-through. |
| 305 | case EOpVectorTimesScalar: |
| 306 | case EOpVectorTimesMatrix: |
| 307 | case EOpMatrixTimesVector: |
| 308 | case EOpMatrixTimesScalar: |
| 309 | case EOpMatrixTimesMatrix: |
| 310 | writeTriplet(visit, "(", " * ", ")"); |
| 311 | break; |
| 312 | |
| 313 | case EOpLogicalOr: writeTriplet(visit, "(", " || ", ")"); break; |
| 314 | case EOpLogicalXor: writeTriplet(visit, "(", " ^^ ", ")"); break; |
| 315 | case EOpLogicalAnd: writeTriplet(visit, "(", " && ", ")"); break; |
| 316 | default: UNREACHABLE(); break; |
| 317 | } |
| 318 | |
| 319 | return visitChildren; |
| 320 | } |
| 321 | |
| 322 | bool TOutputGLSLBase::visitUnary(Visit visit, TIntermUnary* node) |
| 323 | { |
zmo@google.com | 32e9731 | 2011-08-24 01:03:11 +0000 | [diff] [blame] | 324 | TString preString; |
| 325 | TString postString = ")"; |
| 326 | |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 327 | switch (node->getOp()) |
| 328 | { |
zmo@google.com | 32e9731 | 2011-08-24 01:03:11 +0000 | [diff] [blame] | 329 | case EOpNegative: preString = "(-"; break; |
| 330 | case EOpVectorLogicalNot: preString = "not("; break; |
| 331 | case EOpLogicalNot: preString = "(!"; break; |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 332 | |
zmo@google.com | 32e9731 | 2011-08-24 01:03:11 +0000 | [diff] [blame] | 333 | case EOpPostIncrement: preString = "("; postString = "++)"; break; |
| 334 | case EOpPostDecrement: preString = "("; postString = "--)"; break; |
| 335 | case EOpPreIncrement: preString = "(++"; break; |
| 336 | case EOpPreDecrement: preString = "(--"; break; |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 337 | |
| 338 | case EOpConvIntToBool: |
| 339 | case EOpConvFloatToBool: |
| 340 | switch (node->getOperand()->getType().getNominalSize()) |
| 341 | { |
zmo@google.com | 32e9731 | 2011-08-24 01:03:11 +0000 | [diff] [blame] | 342 | case 1: preString = "bool("; break; |
| 343 | case 2: preString = "bvec2("; break; |
| 344 | case 3: preString = "bvec3("; break; |
| 345 | case 4: preString = "bvec4("; break; |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 346 | default: UNREACHABLE(); |
| 347 | } |
| 348 | break; |
| 349 | case EOpConvBoolToFloat: |
| 350 | case EOpConvIntToFloat: |
| 351 | switch (node->getOperand()->getType().getNominalSize()) |
| 352 | { |
zmo@google.com | 32e9731 | 2011-08-24 01:03:11 +0000 | [diff] [blame] | 353 | case 1: preString = "float("; break; |
| 354 | case 2: preString = "vec2("; break; |
| 355 | case 3: preString = "vec3("; break; |
| 356 | case 4: preString = "vec4("; break; |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 357 | default: UNREACHABLE(); |
| 358 | } |
| 359 | break; |
| 360 | case EOpConvFloatToInt: |
| 361 | case EOpConvBoolToInt: |
| 362 | switch (node->getOperand()->getType().getNominalSize()) |
| 363 | { |
zmo@google.com | 32e9731 | 2011-08-24 01:03:11 +0000 | [diff] [blame] | 364 | case 1: preString = "int("; break; |
| 365 | case 2: preString = "ivec2("; break; |
| 366 | case 3: preString = "ivec3("; break; |
| 367 | case 4: preString = "ivec4("; break; |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 368 | default: UNREACHABLE(); |
| 369 | } |
| 370 | break; |
| 371 | |
zmo@google.com | 32e9731 | 2011-08-24 01:03:11 +0000 | [diff] [blame] | 372 | case EOpRadians: preString = "radians("; break; |
| 373 | case EOpDegrees: preString = "degrees("; break; |
| 374 | case EOpSin: preString = "sin("; break; |
| 375 | case EOpCos: preString = "cos("; break; |
| 376 | case EOpTan: preString = "tan("; break; |
| 377 | case EOpAsin: preString = "asin("; break; |
| 378 | case EOpAcos: preString = "acos("; break; |
| 379 | case EOpAtan: preString = "atan("; break; |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 380 | |
zmo@google.com | 32e9731 | 2011-08-24 01:03:11 +0000 | [diff] [blame] | 381 | case EOpExp: preString = "exp("; break; |
| 382 | case EOpLog: preString = "log("; break; |
| 383 | case EOpExp2: preString = "exp2("; break; |
| 384 | case EOpLog2: preString = "log2("; break; |
| 385 | case EOpSqrt: preString = "sqrt("; break; |
| 386 | case EOpInverseSqrt: preString = "inversesqrt("; break; |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 387 | |
zmo@google.com | 32e9731 | 2011-08-24 01:03:11 +0000 | [diff] [blame] | 388 | case EOpAbs: preString = "abs("; break; |
| 389 | case EOpSign: preString = "sign("; break; |
| 390 | case EOpFloor: preString = "floor("; break; |
| 391 | case EOpCeil: preString = "ceil("; break; |
| 392 | case EOpFract: preString = "fract("; break; |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 393 | |
zmo@google.com | 32e9731 | 2011-08-24 01:03:11 +0000 | [diff] [blame] | 394 | case EOpLength: preString = "length("; break; |
| 395 | case EOpNormalize: preString = "normalize("; break; |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 396 | |
zmo@google.com | 32e9731 | 2011-08-24 01:03:11 +0000 | [diff] [blame] | 397 | case EOpDFdx: preString = "dFdx("; break; |
| 398 | case EOpDFdy: preString = "dFdy("; break; |
| 399 | case EOpFwidth: preString = "fwidth("; break; |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 400 | |
zmo@google.com | 32e9731 | 2011-08-24 01:03:11 +0000 | [diff] [blame] | 401 | case EOpAny: preString = "any("; break; |
| 402 | case EOpAll: preString = "all("; break; |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 403 | |
| 404 | default: UNREACHABLE(); break; |
| 405 | } |
| 406 | |
zmo@google.com | 32e9731 | 2011-08-24 01:03:11 +0000 | [diff] [blame] | 407 | if (visit == PreVisit && node->getUseEmulatedFunction()) |
| 408 | preString = BuiltInFunctionEmulator::GetEmulatedFunctionName(preString); |
| 409 | writeTriplet(visit, preString.c_str(), NULL, postString.c_str()); |
| 410 | |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 411 | return true; |
| 412 | } |
| 413 | |
| 414 | bool TOutputGLSLBase::visitSelection(Visit visit, TIntermSelection* node) |
| 415 | { |
| 416 | TInfoSinkBase& out = objSink(); |
| 417 | |
| 418 | if (node->usesTernaryOperator()) |
| 419 | { |
| 420 | // Notice two brackets at the beginning and end. The outer ones |
| 421 | // encapsulate the whole ternary expression. This preserves the |
| 422 | // order of precedence when ternary expressions are used in a |
| 423 | // compound expression, i.e., c = 2 * (a < b ? 1 : 2). |
| 424 | out << "(("; |
| 425 | node->getCondition()->traverse(this); |
| 426 | out << ") ? ("; |
| 427 | node->getTrueBlock()->traverse(this); |
| 428 | out << ") : ("; |
| 429 | node->getFalseBlock()->traverse(this); |
| 430 | out << "))"; |
| 431 | } |
| 432 | else |
| 433 | { |
| 434 | out << "if ("; |
| 435 | node->getCondition()->traverse(this); |
| 436 | out << ")\n"; |
| 437 | |
| 438 | incrementDepth(); |
| 439 | visitCodeBlock(node->getTrueBlock()); |
| 440 | |
| 441 | if (node->getFalseBlock()) |
| 442 | { |
| 443 | out << "else\n"; |
| 444 | visitCodeBlock(node->getFalseBlock()); |
| 445 | } |
| 446 | decrementDepth(); |
| 447 | } |
| 448 | return false; |
| 449 | } |
| 450 | |
| 451 | bool TOutputGLSLBase::visitAggregate(Visit visit, TIntermAggregate* node) |
| 452 | { |
| 453 | bool visitChildren = true; |
| 454 | TInfoSinkBase& out = objSink(); |
zmo@google.com | f420c42 | 2011-09-12 18:27:59 +0000 | [diff] [blame] | 455 | TString preString; |
| 456 | bool delayedWrite = false; |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 457 | switch (node->getOp()) |
| 458 | { |
| 459 | case EOpSequence: { |
| 460 | // Scope the sequences except when at the global scope. |
| 461 | if (depth > 0) out << "{\n"; |
| 462 | |
| 463 | incrementDepth(); |
| 464 | const TIntermSequence& sequence = node->getSequence(); |
| 465 | for (TIntermSequence::const_iterator iter = sequence.begin(); |
| 466 | iter != sequence.end(); ++iter) |
| 467 | { |
| 468 | TIntermNode* node = *iter; |
| 469 | ASSERT(node != NULL); |
| 470 | node->traverse(this); |
| 471 | |
| 472 | if (isSingleStatement(node)) |
| 473 | out << ";\n"; |
| 474 | } |
| 475 | decrementDepth(); |
| 476 | |
| 477 | // Scope the sequences except when at the global scope. |
| 478 | if (depth > 0) out << "}\n"; |
| 479 | visitChildren = false; |
| 480 | break; |
| 481 | } |
| 482 | case EOpPrototype: { |
| 483 | // Function declaration. |
| 484 | ASSERT(visit == PreVisit); |
kbr@chromium.org | 57f7ce0 | 2011-08-15 23:13:05 +0000 | [diff] [blame] | 485 | writeVariableType(node->getType()); |
daniel@transgaming.com | 0aa3b5a | 2012-11-28 19:43:24 +0000 | [diff] [blame] | 486 | out << " " << hashName(node->getName()); |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 487 | |
| 488 | out << "("; |
| 489 | writeFunctionParameters(node->getSequence()); |
| 490 | out << ")"; |
| 491 | |
| 492 | visitChildren = false; |
| 493 | break; |
| 494 | } |
| 495 | case EOpFunction: { |
| 496 | // Function definition. |
| 497 | ASSERT(visit == PreVisit); |
zmo@google.com | 189be2f | 2011-06-16 18:28:53 +0000 | [diff] [blame] | 498 | writeVariableType(node->getType()); |
daniel@transgaming.com | 0aa3b5a | 2012-11-28 19:43:24 +0000 | [diff] [blame] | 499 | out << " " << hashFunctionName(node->getName()); |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 500 | |
| 501 | incrementDepth(); |
| 502 | // Function definition node contains one or two children nodes |
| 503 | // representing function parameters and function body. The latter |
| 504 | // is not present in case of empty function bodies. |
| 505 | const TIntermSequence& sequence = node->getSequence(); |
| 506 | ASSERT((sequence.size() == 1) || (sequence.size() == 2)); |
| 507 | TIntermSequence::const_iterator seqIter = sequence.begin(); |
| 508 | |
| 509 | // Traverse function parameters. |
| 510 | TIntermAggregate* params = (*seqIter)->getAsAggregate(); |
| 511 | ASSERT(params != NULL); |
| 512 | ASSERT(params->getOp() == EOpParameters); |
| 513 | params->traverse(this); |
| 514 | |
| 515 | // Traverse function body. |
| 516 | TIntermAggregate* body = ++seqIter != sequence.end() ? |
| 517 | (*seqIter)->getAsAggregate() : NULL; |
| 518 | visitCodeBlock(body); |
| 519 | decrementDepth(); |
| 520 | |
| 521 | // Fully processed; no need to visit children. |
| 522 | visitChildren = false; |
| 523 | break; |
| 524 | } |
| 525 | case EOpFunctionCall: |
| 526 | // Function call. |
| 527 | if (visit == PreVisit) |
| 528 | { |
daniel@transgaming.com | 0aa3b5a | 2012-11-28 19:43:24 +0000 | [diff] [blame] | 529 | out << hashFunctionName(node->getName()) << "("; |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 530 | } |
| 531 | else if (visit == InVisit) |
| 532 | { |
| 533 | out << ", "; |
| 534 | } |
| 535 | else |
| 536 | { |
| 537 | out << ")"; |
| 538 | } |
| 539 | break; |
| 540 | case EOpParameters: { |
| 541 | // Function parameters. |
| 542 | ASSERT(visit == PreVisit); |
| 543 | out << "("; |
| 544 | writeFunctionParameters(node->getSequence()); |
| 545 | out << ")"; |
| 546 | visitChildren = false; |
| 547 | break; |
| 548 | } |
| 549 | case EOpDeclaration: { |
| 550 | // Variable declaration. |
| 551 | if (visit == PreVisit) |
| 552 | { |
| 553 | const TIntermSequence& sequence = node->getSequence(); |
| 554 | const TIntermTyped* variable = sequence.front()->getAsTyped(); |
| 555 | writeVariableType(variable->getType()); |
| 556 | out << " "; |
| 557 | mDeclaringVariables = true; |
| 558 | } |
| 559 | else if (visit == InVisit) |
| 560 | { |
| 561 | out << ", "; |
| 562 | mDeclaringVariables = true; |
| 563 | } |
| 564 | else |
| 565 | { |
| 566 | mDeclaringVariables = false; |
| 567 | } |
| 568 | break; |
| 569 | } |
| 570 | case EOpConstructFloat: writeTriplet(visit, "float(", NULL, ")"); break; |
| 571 | case EOpConstructVec2: writeTriplet(visit, "vec2(", ", ", ")"); break; |
| 572 | case EOpConstructVec3: writeTriplet(visit, "vec3(", ", ", ")"); break; |
| 573 | case EOpConstructVec4: writeTriplet(visit, "vec4(", ", ", ")"); break; |
| 574 | case EOpConstructBool: writeTriplet(visit, "bool(", NULL, ")"); break; |
| 575 | case EOpConstructBVec2: writeTriplet(visit, "bvec2(", ", ", ")"); break; |
| 576 | case EOpConstructBVec3: writeTriplet(visit, "bvec3(", ", ", ")"); break; |
| 577 | case EOpConstructBVec4: writeTriplet(visit, "bvec4(", ", ", ")"); break; |
| 578 | case EOpConstructInt: writeTriplet(visit, "int(", NULL, ")"); break; |
| 579 | case EOpConstructIVec2: writeTriplet(visit, "ivec2(", ", ", ")"); break; |
| 580 | case EOpConstructIVec3: writeTriplet(visit, "ivec3(", ", ", ")"); break; |
| 581 | case EOpConstructIVec4: writeTriplet(visit, "ivec4(", ", ", ")"); break; |
| 582 | case EOpConstructMat2: writeTriplet(visit, "mat2(", ", ", ")"); break; |
| 583 | case EOpConstructMat3: writeTriplet(visit, "mat3(", ", ", ")"); break; |
| 584 | case EOpConstructMat4: writeTriplet(visit, "mat4(", ", ", ")"); break; |
| 585 | case EOpConstructStruct: |
| 586 | if (visit == PreVisit) |
| 587 | { |
| 588 | const TType& type = node->getType(); |
| 589 | ASSERT(type.getBasicType() == EbtStruct); |
Jamie Madill | 98493dd | 2013-07-08 14:39:03 -0400 | [diff] [blame] | 590 | out << hashName(type.getStruct()->name()) << "("; |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 591 | } |
| 592 | else if (visit == InVisit) |
| 593 | { |
| 594 | out << ", "; |
| 595 | } |
| 596 | else |
| 597 | { |
| 598 | out << ")"; |
| 599 | } |
| 600 | break; |
| 601 | |
zmo@google.com | f420c42 | 2011-09-12 18:27:59 +0000 | [diff] [blame] | 602 | case EOpLessThan: preString = "lessThan("; delayedWrite = true; break; |
| 603 | case EOpGreaterThan: preString = "greaterThan("; delayedWrite = true; break; |
| 604 | case EOpLessThanEqual: preString = "lessThanEqual("; delayedWrite = true; break; |
| 605 | case EOpGreaterThanEqual: preString = "greaterThanEqual("; delayedWrite = true; break; |
| 606 | case EOpVectorEqual: preString = "equal("; delayedWrite = true; break; |
| 607 | case EOpVectorNotEqual: preString = "notEqual("; delayedWrite = true; break; |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 608 | case EOpComma: writeTriplet(visit, NULL, ", ", NULL); break; |
| 609 | |
zmo@google.com | f420c42 | 2011-09-12 18:27:59 +0000 | [diff] [blame] | 610 | case EOpMod: preString = "mod("; delayedWrite = true; break; |
| 611 | case EOpPow: preString = "pow("; delayedWrite = true; break; |
| 612 | case EOpAtan: preString = "atan("; delayedWrite = true; break; |
| 613 | case EOpMin: preString = "min("; delayedWrite = true; break; |
| 614 | case EOpMax: preString = "max("; delayedWrite = true; break; |
| 615 | case EOpClamp: preString = "clamp("; delayedWrite = true; break; |
| 616 | case EOpMix: preString = "mix("; delayedWrite = true; break; |
| 617 | case EOpStep: preString = "step("; delayedWrite = true; break; |
| 618 | case EOpSmoothStep: preString = "smoothstep("; delayedWrite = true; break; |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 619 | |
zmo@google.com | f420c42 | 2011-09-12 18:27:59 +0000 | [diff] [blame] | 620 | case EOpDistance: preString = "distance("; delayedWrite = true; break; |
| 621 | case EOpDot: preString = "dot("; delayedWrite = true; break; |
| 622 | case EOpCross: preString = "cross("; delayedWrite = true; break; |
| 623 | case EOpFaceForward: preString = "faceforward("; delayedWrite = true; break; |
| 624 | case EOpReflect: preString = "reflect("; delayedWrite = true; break; |
| 625 | case EOpRefract: preString = "refract("; delayedWrite = true; break; |
| 626 | case EOpMul: preString = "matrixCompMult("; delayedWrite = true; break; |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 627 | |
| 628 | default: UNREACHABLE(); break; |
| 629 | } |
zmo@google.com | f420c42 | 2011-09-12 18:27:59 +0000 | [diff] [blame] | 630 | if (delayedWrite && visit == PreVisit && node->getUseEmulatedFunction()) |
| 631 | preString = BuiltInFunctionEmulator::GetEmulatedFunctionName(preString); |
| 632 | if (delayedWrite) |
| 633 | writeTriplet(visit, preString.c_str(), ", ", ")"); |
zmo@google.com | 5601ea0 | 2011-06-10 18:23:25 +0000 | [diff] [blame] | 634 | return visitChildren; |
| 635 | } |
| 636 | |
| 637 | bool TOutputGLSLBase::visitLoop(Visit visit, TIntermLoop* node) |
| 638 | { |
| 639 | TInfoSinkBase& out = objSink(); |
| 640 | |
| 641 | incrementDepth(); |
| 642 | // Loop header. |
| 643 | TLoopType loopType = node->getType(); |
| 644 | if (loopType == ELoopFor) // for loop |
| 645 | { |
| 646 | if (!node->getUnrollFlag()) { |
| 647 | out << "for ("; |
| 648 | if (node->getInit()) |
| 649 | node->getInit()->traverse(this); |
| 650 | out << "; "; |
| 651 | |
| 652 | if (node->getCondition()) |
| 653 | node->getCondition()->traverse(this); |
| 654 | out << "; "; |
| 655 | |
| 656 | if (node->getExpression()) |
| 657 | node->getExpression()->traverse(this); |
| 658 | out << ")\n"; |
| 659 | } |
| 660 | } |
| 661 | else if (loopType == ELoopWhile) // while loop |
| 662 | { |
| 663 | out << "while ("; |
| 664 | ASSERT(node->getCondition() != NULL); |
| 665 | node->getCondition()->traverse(this); |
| 666 | out << ")\n"; |
| 667 | } |
| 668 | else // do-while loop |
| 669 | { |
| 670 | ASSERT(loopType == ELoopDoWhile); |
| 671 | out << "do\n"; |
| 672 | } |
| 673 | |
| 674 | // Loop body. |
| 675 | if (node->getUnrollFlag()) |
| 676 | { |
| 677 | TLoopIndexInfo indexInfo; |
| 678 | mLoopUnroll.FillLoopIndexInfo(node, indexInfo); |
| 679 | mLoopUnroll.Push(indexInfo); |
| 680 | while (mLoopUnroll.SatisfiesLoopCondition()) |
| 681 | { |
| 682 | visitCodeBlock(node->getBody()); |
| 683 | mLoopUnroll.Step(); |
| 684 | } |
| 685 | mLoopUnroll.Pop(); |
| 686 | } |
| 687 | else |
| 688 | { |
| 689 | visitCodeBlock(node->getBody()); |
| 690 | } |
| 691 | |
| 692 | // Loop footer. |
| 693 | if (loopType == ELoopDoWhile) // do-while loop |
| 694 | { |
| 695 | out << "while ("; |
| 696 | ASSERT(node->getCondition() != NULL); |
| 697 | node->getCondition()->traverse(this); |
| 698 | out << ");\n"; |
| 699 | } |
| 700 | decrementDepth(); |
| 701 | |
| 702 | // No need to visit children. They have been already processed in |
| 703 | // this function. |
| 704 | return false; |
| 705 | } |
| 706 | |
| 707 | bool TOutputGLSLBase::visitBranch(Visit visit, TIntermBranch* node) |
| 708 | { |
| 709 | switch (node->getFlowOp()) |
| 710 | { |
| 711 | case EOpKill: writeTriplet(visit, "discard", NULL, NULL); break; |
| 712 | case EOpBreak: writeTriplet(visit, "break", NULL, NULL); break; |
| 713 | case EOpContinue: writeTriplet(visit, "continue", NULL, NULL); break; |
| 714 | case EOpReturn: writeTriplet(visit, "return ", NULL, NULL); break; |
| 715 | default: UNREACHABLE(); break; |
| 716 | } |
| 717 | |
| 718 | return true; |
| 719 | } |
| 720 | |
| 721 | void TOutputGLSLBase::visitCodeBlock(TIntermNode* node) { |
| 722 | TInfoSinkBase &out = objSink(); |
| 723 | if (node != NULL) |
| 724 | { |
| 725 | node->traverse(this); |
| 726 | // Single statements not part of a sequence need to be terminated |
| 727 | // with semi-colon. |
| 728 | if (isSingleStatement(node)) |
| 729 | out << ";\n"; |
| 730 | } |
| 731 | else |
| 732 | { |
| 733 | out << "{\n}\n"; // Empty code block. |
| 734 | } |
| 735 | } |
daniel@transgaming.com | 0aa3b5a | 2012-11-28 19:43:24 +0000 | [diff] [blame] | 736 | |
| 737 | TString TOutputGLSLBase::getTypeName(const TType& type) |
| 738 | { |
| 739 | TInfoSinkBase out; |
| 740 | if (type.isMatrix()) |
| 741 | { |
| 742 | out << "mat"; |
| 743 | out << type.getNominalSize(); |
| 744 | } |
| 745 | else if (type.isVector()) |
| 746 | { |
| 747 | switch (type.getBasicType()) |
| 748 | { |
| 749 | case EbtFloat: out << "vec"; break; |
| 750 | case EbtInt: out << "ivec"; break; |
| 751 | case EbtBool: out << "bvec"; break; |
| 752 | default: UNREACHABLE(); break; |
| 753 | } |
| 754 | out << type.getNominalSize(); |
| 755 | } |
| 756 | else |
| 757 | { |
| 758 | if (type.getBasicType() == EbtStruct) |
Jamie Madill | 98493dd | 2013-07-08 14:39:03 -0400 | [diff] [blame] | 759 | out << hashName(type.getStruct()->name()); |
daniel@transgaming.com | 0aa3b5a | 2012-11-28 19:43:24 +0000 | [diff] [blame] | 760 | else |
| 761 | out << type.getBasicString(); |
| 762 | } |
| 763 | return TString(out.c_str()); |
| 764 | } |
| 765 | |
| 766 | TString TOutputGLSLBase::hashName(const TString& name) |
| 767 | { |
| 768 | if (mHashFunction == NULL || name.empty()) |
| 769 | return name; |
| 770 | NameMap::const_iterator it = mNameMap.find(name.c_str()); |
| 771 | if (it != mNameMap.end()) |
| 772 | return it->second.c_str(); |
| 773 | TString hashedName = TIntermTraverser::hash(name, mHashFunction); |
| 774 | mNameMap[name.c_str()] = hashedName.c_str(); |
| 775 | return hashedName; |
| 776 | } |
| 777 | |
| 778 | TString TOutputGLSLBase::hashVariableName(const TString& name) |
| 779 | { |
| 780 | if (mSymbolTable.findBuiltIn(name) != NULL) |
| 781 | return name; |
| 782 | return hashName(name); |
| 783 | } |
| 784 | |
| 785 | TString TOutputGLSLBase::hashFunctionName(const TString& mangled_name) |
| 786 | { |
| 787 | TString name = TFunction::unmangleName(mangled_name); |
| 788 | if (mSymbolTable.findBuiltIn(mangled_name) != NULL || name == "main") |
| 789 | return name; |
| 790 | return hashName(name); |
| 791 | } |
Jamie Madill | 98493dd | 2013-07-08 14:39:03 -0400 | [diff] [blame] | 792 | |
| 793 | bool TOutputGLSLBase::structDeclared(const TStructure* structure) const |
| 794 | { |
| 795 | return mDeclaredStructs.find(structure->name()) != mDeclaredStructs.end(); |
| 796 | } |
| 797 | |
| 798 | void TOutputGLSLBase::declareStruct(const TStructure* structure) |
| 799 | { |
| 800 | TInfoSinkBase& out = objSink(); |
| 801 | |
| 802 | out << "struct " << hashName(structure->name()) << "{\n"; |
| 803 | const TFieldList& fields = structure->fields(); |
| 804 | for (size_t i = 0; i < fields.size(); ++i) |
| 805 | { |
| 806 | const TField* field = fields[i]; |
| 807 | if (writeVariablePrecision(field->type()->getPrecision())) |
| 808 | out << " "; |
| 809 | out << getTypeName(*field->type()) << " " << hashName(field->name()); |
| 810 | if (field->type()->isArray()) |
| 811 | out << arrayBrackets(*field->type()); |
| 812 | out << ";\n"; |
| 813 | } |
| 814 | out << "}"; |
| 815 | |
| 816 | mDeclaredStructs.insert(structure->name()); |
| 817 | } |