1 // SwiftShader Software Renderer
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3 // Copyright(c) 2005-2013 TransGaming Inc.
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5 // All rights reserved. No part of this software may be copied, distributed, transmitted,
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6 // transcribed, stored in a retrieval system, translated into any human or computer
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7 // language by any means, or disclosed to third parties without the explicit written
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8 // agreement of TransGaming Inc. Without such an agreement, no rights or licenses, express
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9 // or implied, including but not limited to any patent rights, are granted to you.
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12 #include "OutputASM.h"
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14 #include "common/debug.h"
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15 #include "InfoSink.h"
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17 #include "libGLESv2/Shader.h"
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19 #include <GLES2/gl2.h>
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20 #include <GLES2/gl2ext.h>
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21 #include <GLES3/gl3.h>
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25 // Integer to TString conversion
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29 sprintf(buffer, "%d", i);
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33 class Temporary : public TIntermSymbol
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36 Temporary(OutputASM *assembler) : TIntermSymbol(0, "tmp", TType(EbtFloat, EbpHigh, EvqTemporary, 4, 1, false)), assembler(assembler)
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42 assembler->freeTemporary(this);
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46 OutputASM *const assembler;
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49 class Constant : public TIntermConstantUnion
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52 Constant(float x, float y, float z, float w) : TIntermConstantUnion(constants, TType(EbtFloat, EbpHigh, EvqConstExpr, 4, 1, false))
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54 constants[0].setFConst(x);
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55 constants[1].setFConst(y);
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56 constants[2].setFConst(z);
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57 constants[3].setFConst(w);
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60 Constant(bool b) : TIntermConstantUnion(constants, TType(EbtBool, EbpHigh, EvqConstExpr, 1, 1, false))
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62 constants[0].setBConst(b);
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65 Constant(int i) : TIntermConstantUnion(constants, TType(EbtInt, EbpHigh, EvqConstExpr, 1, 1, false))
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67 constants[0].setIConst(i);
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75 ConstantUnion constants[4];
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78 Uniform::Uniform(GLenum type, GLenum precision, const std::string &name, int arraySize, int registerIndex, int offset, int blockId) :
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79 type(type), precision(precision), name(name), arraySize(arraySize), registerIndex(registerIndex), offset(offset), blockId(blockId)
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83 UniformBlock::UniformBlock(const std::string& name, const std::string& instanceName, unsigned int dataSize, unsigned int arraySize,
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84 TLayoutBlockStorage layout, bool isRowMajorLayout, int registerIndex, int blockId) :
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85 name(name), instanceName(instanceName), dataSize(dataSize), arraySize(arraySize), layout(layout),
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86 isRowMajorLayout(isRowMajorLayout), registerIndex(registerIndex), blockId(blockId)
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90 Attribute::Attribute()
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97 Attribute::Attribute(GLenum type, const std::string &name, int arraySize, int location, int registerIndex)
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101 this->arraySize = arraySize;
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102 this->location = location;
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103 this->registerIndex = registerIndex;
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106 sw::PixelShader *Shader::getPixelShader() const
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111 sw::VertexShader *Shader::getVertexShader() const
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116 OutputASM::OutputASM(TParseContext &context, Shader *shaderObject) : TIntermTraverser(true, true, true), mContext(context), shaderObject(shaderObject)
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124 shader = shaderObject->getShader();
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125 pixelShader = shaderObject->getPixelShader();
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126 vertexShader = shaderObject->getVertexShader();
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129 functionArray.push_back(Function(0, "main(", 0, 0));
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130 currentFunction = 0;
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131 outputQualifier = EvqOutput; // Set outputQualifier to any value other than EvqFragColor or EvqFragData
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134 OutputASM::~OutputASM()
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138 void OutputASM::output()
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142 emitShader(GLOBAL);
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144 if(functionArray.size() > 1) // Only call main() when there are other functions
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146 Instruction *callMain = emit(sw::Shader::OPCODE_CALL);
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147 callMain->dst.type = sw::Shader::PARAMETER_LABEL;
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148 callMain->dst.index = 0; // main()
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150 emit(sw::Shader::OPCODE_RET);
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153 emitShader(FUNCTION);
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157 void OutputASM::emitShader(Scope scope)
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160 currentScope = GLOBAL;
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161 mContext.getTreeRoot()->traverse(this);
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164 void OutputASM::freeTemporary(Temporary *temporary)
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166 free(temporaries, temporary);
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169 sw::Shader::Opcode OutputASM::getOpcode(sw::Shader::Opcode op, TIntermTyped *in) const
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171 TBasicType baseType = in->getType().getBasicType();
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175 case sw::Shader::OPCODE_NEG:
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180 return sw::Shader::OPCODE_INEG;
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185 case sw::Shader::OPCODE_ADD:
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190 return sw::Shader::OPCODE_IADD;
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195 case sw::Shader::OPCODE_SUB:
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200 return sw::Shader::OPCODE_ISUB;
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205 case sw::Shader::OPCODE_MUL:
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210 return sw::Shader::OPCODE_IMUL;
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215 case sw::Shader::OPCODE_DIV:
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219 return sw::Shader::OPCODE_IDIV;
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221 return sw::Shader::OPCODE_UDIV;
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226 case sw::Shader::OPCODE_IMOD:
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227 return baseType == EbtUInt ? sw::Shader::OPCODE_UMOD : op;
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228 case sw::Shader::OPCODE_ISHR:
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229 return baseType == EbtUInt ? sw::Shader::OPCODE_USHR : op;
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230 case sw::Shader::OPCODE_MIN:
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234 return sw::Shader::OPCODE_IMIN;
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236 return sw::Shader::OPCODE_UMIN;
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241 case sw::Shader::OPCODE_MAX:
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245 return sw::Shader::OPCODE_IMAX;
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247 return sw::Shader::OPCODE_UMAX;
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257 void OutputASM::visitSymbol(TIntermSymbol *symbol)
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259 // Vertex varyings don't have to be actively used to successfully link
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260 // against pixel shaders that use them. So make sure they're declared.
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261 if(symbol->getQualifier() == EvqVaryingOut || symbol->getQualifier() == EvqInvariantVaryingOut || symbol->getQualifier() == EvqVertexOut)
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263 if(symbol->getBasicType() != EbtInvariant) // Typeless declarations are not new varyings
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265 declareVarying(symbol, -1);
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270 bool OutputASM::visitBinary(Visit visit, TIntermBinary *node)
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272 if(currentScope != emitScope)
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277 TIntermTyped *result = node;
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278 TIntermTyped *left = node->getLeft();
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279 TIntermTyped *right = node->getRight();
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280 const TType &leftType = left->getType();
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281 const TType &rightType = right->getType();
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282 const TType &resultType = node->getType();
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284 switch(node->getOp())
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287 if(visit == PostVisit)
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289 assignLvalue(left, right);
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290 copy(result, right);
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293 case EOpInitialize:
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294 if(visit == PostVisit)
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299 case EOpMatrixTimesScalarAssign:
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300 if(visit == PostVisit)
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302 for(int i = 0; i < leftType.getNominalSize(); i++)
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304 Instruction *mul = emit(sw::Shader::OPCODE_MUL, result, left, right);
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305 mul->dst.index += i;
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306 argument(mul->src[0], left, i);
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309 assignLvalue(left, result);
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312 case EOpVectorTimesMatrixAssign:
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313 if(visit == PostVisit)
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315 int size = leftType.getNominalSize();
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317 for(int i = 0; i < size; i++)
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319 Instruction *dot = emit(sw::Shader::OPCODE_DP(size), result, left, right);
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320 dot->dst.mask = 1 << i;
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321 argument(dot->src[1], right, i);
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324 assignLvalue(left, result);
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327 case EOpMatrixTimesMatrixAssign:
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328 if(visit == PostVisit)
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330 int dim = leftType.getNominalSize();
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332 for(int i = 0; i < dim; i++)
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334 Instruction *mul = emit(sw::Shader::OPCODE_MUL, result, left, right);
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335 mul->dst.index += i;
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336 argument(mul->src[1], right, i);
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337 mul->src[1].swizzle = 0x00;
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339 for(int j = 1; j < dim; j++)
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341 Instruction *mad = emit(sw::Shader::OPCODE_MAD, result, left, right, result);
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342 mad->dst.index += i;
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343 argument(mad->src[0], left, j);
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344 argument(mad->src[1], right, i);
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345 mad->src[1].swizzle = j * 0x55;
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346 argument(mad->src[2], result, i);
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350 assignLvalue(left, result);
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353 case EOpIndexDirect:
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354 if(visit == PostVisit)
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356 int index = right->getAsConstantUnion()->getIConst(0);
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358 if(result->isMatrix() || result->isStruct())
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360 ASSERT(left->isArray());
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361 copy(result, left, index * left->elementRegisterCount());
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363 else if(result->isRegister())
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365 Instruction *mov = emit(sw::Shader::OPCODE_MOV, result, left);
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367 if(left->isRegister())
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369 mov->src[0].swizzle = index;
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371 else if(left->isArray())
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373 argument(mov->src[0], left, index * left->elementRegisterCount());
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375 else if(left->isMatrix())
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377 ASSERT(index < left->getNominalSize()); // FIXME: Report semantic error
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378 argument(mov->src[0], left, index);
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380 else UNREACHABLE(0);
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382 else UNREACHABLE(0);
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385 case EOpIndexIndirect:
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386 if(visit == PostVisit)
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388 if(left->isArray() || left->isMatrix())
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390 for(int index = 0; index < result->totalRegisterCount(); index++)
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392 Instruction *mov = emit(sw::Shader::OPCODE_MOV, result, left);
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393 mov->dst.index += index;
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394 mov->dst.mask = writeMask(result, index);
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395 argument(mov->src[0], left, index);
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397 if(left->totalRegisterCount() > 1)
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399 sw::Shader::SourceParameter relativeRegister;
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400 argument(relativeRegister, right);
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402 mov->src[0].rel.type = relativeRegister.type;
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403 mov->src[0].rel.index = relativeRegister.index;
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404 mov->src[0].rel.scale = result->totalRegisterCount();
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405 mov->src[0].rel.deterministic = !(vertexShader && left->getQualifier() == EvqUniform);
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409 else if(left->isRegister())
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411 emit(sw::Shader::OPCODE_EXTRACT, result, left, right);
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413 else UNREACHABLE(0);
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416 case EOpIndexDirectStruct:
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417 case EOpIndexDirectInterfaceBlock:
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418 if(visit == PostVisit)
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420 ASSERT(leftType.isStruct() || (leftType.isInterfaceBlock()));
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422 const TFieldList& fields = (node->getOp() == EOpIndexDirectStruct) ?
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423 leftType.getStruct()->fields() :
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424 leftType.getInterfaceBlock()->fields();
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425 int index = right->getAsConstantUnion()->getIConst(0);
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426 int fieldOffset = 0;
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428 for(int i = 0; i < index; i++)
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430 fieldOffset += fields[i]->type()->totalRegisterCount();
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433 copy(result, left, fieldOffset);
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436 case EOpVectorSwizzle:
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437 if(visit == PostVisit)
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440 TIntermAggregate *components = right->getAsAggregate();
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444 TIntermSequence &sequence = components->getSequence();
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447 for(TIntermSequence::iterator sit = sequence.begin(); sit != sequence.end(); sit++)
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449 TIntermConstantUnion *element = (*sit)->getAsConstantUnion();
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453 int i = element->getUnionArrayPointer()[0].getIConst();
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454 swizzle |= i << (component * 2);
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457 else UNREACHABLE(0);
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460 else UNREACHABLE(0);
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462 Instruction *mov = emit(sw::Shader::OPCODE_MOV, result, left);
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463 mov->src[0].swizzle = swizzle;
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466 case EOpAddAssign: if(visit == PostVisit) emitAssign(getOpcode(sw::Shader::OPCODE_ADD, result), result, left, left, right); break;
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467 case EOpAdd: if(visit == PostVisit) emitBinary(getOpcode(sw::Shader::OPCODE_ADD, result), result, left, right); break;
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468 case EOpSubAssign: if(visit == PostVisit) emitAssign(getOpcode(sw::Shader::OPCODE_SUB, result), result, left, left, right); break;
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469 case EOpSub: if(visit == PostVisit) emitBinary(getOpcode(sw::Shader::OPCODE_SUB, result), result, left, right); break;
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470 case EOpMulAssign: if(visit == PostVisit) emitAssign(getOpcode(sw::Shader::OPCODE_MUL, result), result, left, left, right); break;
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471 case EOpMul: if(visit == PostVisit) emitBinary(getOpcode(sw::Shader::OPCODE_MUL, result), result, left, right); break;
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472 case EOpDivAssign: if(visit == PostVisit) emitAssign(getOpcode(sw::Shader::OPCODE_DIV, result), result, left, left, right); break;
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473 case EOpDiv: if(visit == PostVisit) emitBinary(getOpcode(sw::Shader::OPCODE_DIV, result), result, left, right); break;
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474 case EOpIModAssign: if(visit == PostVisit) emitAssign(getOpcode(sw::Shader::OPCODE_IMOD, result), result, left, left, right); break;
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475 case EOpIMod: if(visit == PostVisit) emitBinary(getOpcode(sw::Shader::OPCODE_IMOD, result), result, left, right); break;
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476 case EOpBitShiftLeftAssign: if(visit == PostVisit) emitAssign(sw::Shader::OPCODE_SHL, result, left, left, right); break;
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477 case EOpBitShiftLeft: if(visit == PostVisit) emitBinary(sw::Shader::OPCODE_SHL, result, left, right); break;
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478 case EOpBitShiftRightAssign: if(visit == PostVisit) emitAssign(getOpcode(sw::Shader::OPCODE_ISHR, result), result, left, left, right); break;
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479 case EOpBitShiftRight: if(visit == PostVisit) emitBinary(getOpcode(sw::Shader::OPCODE_ISHR, result), result, left, right); break;
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480 case EOpBitwiseAndAssign: if(visit == PostVisit) emitAssign(sw::Shader::OPCODE_AND, result, left, left, right); break;
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481 case EOpBitwiseAnd: if(visit == PostVisit) emitBinary(sw::Shader::OPCODE_AND, result, left, right); break;
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482 case EOpBitwiseXorAssign: if(visit == PostVisit) emitAssign(sw::Shader::OPCODE_XOR, result, left, left, right); break;
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483 case EOpBitwiseXor: if(visit == PostVisit) emitBinary(sw::Shader::OPCODE_XOR, result, left, right); break;
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484 case EOpBitwiseOrAssign: if(visit == PostVisit) emitAssign(sw::Shader::OPCODE_OR, result, left, left, right); break;
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485 case EOpBitwiseOr: if(visit == PostVisit) emitBinary(sw::Shader::OPCODE_OR, result, left, right); break;
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487 if(visit == PostVisit)
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489 emitBinary(sw::Shader::OPCODE_EQ, result, left, right);
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491 for(int index = 1; index < left->totalRegisterCount(); index++)
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493 Temporary equal(this);
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494 Instruction *eq = emit(sw::Shader::OPCODE_EQ, &equal, left, right);
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495 argument(eq->src[0], left, index);
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496 argument(eq->src[1], right, index);
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497 emit(sw::Shader::OPCODE_AND, result, result, &equal);
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502 if(visit == PostVisit)
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504 emitBinary(sw::Shader::OPCODE_NE, result, left, right);
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506 for(int index = 1; index < left->totalRegisterCount(); index++)
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508 Temporary notEqual(this);
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509 Instruction *eq = emit(sw::Shader::OPCODE_NE, ¬Equal, left, right);
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510 argument(eq->src[0], left, index);
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511 argument(eq->src[1], right, index);
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512 emit(sw::Shader::OPCODE_OR, result, result, ¬Equal);
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516 case EOpLessThan: if(visit == PostVisit) emitCmp(sw::Shader::CONTROL_LT, result, left, right); break;
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517 case EOpGreaterThan: if(visit == PostVisit) emitCmp(sw::Shader::CONTROL_GT, result, left, right); break;
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518 case EOpLessThanEqual: if(visit == PostVisit) emitCmp(sw::Shader::CONTROL_LE, result, left, right); break;
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519 case EOpGreaterThanEqual: if(visit == PostVisit) emitCmp(sw::Shader::CONTROL_GE, result, left, right); break;
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520 case EOpVectorTimesScalarAssign: if(visit == PostVisit) emitAssign(getOpcode(sw::Shader::OPCODE_MUL, left), result, left, left, right); break;
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521 case EOpVectorTimesScalar: if(visit == PostVisit) emit(getOpcode(sw::Shader::OPCODE_MUL, left), result, left, right); break;
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522 case EOpMatrixTimesScalar:
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523 if(visit == PostVisit)
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525 for(int i = 0; i < leftType.getNominalSize(); i++)
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527 Instruction *mul = emit(sw::Shader::OPCODE_MUL, result, left, right);
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528 mul->dst.index += i;
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529 argument(mul->src[0], left, i);
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533 case EOpVectorTimesMatrix:
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534 if(visit == PostVisit)
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536 int size = leftType.getNominalSize();
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538 for(int i = 0; i < size; i++)
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540 Instruction *dot = emit(sw::Shader::OPCODE_DP(size), result, left, right);
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541 dot->dst.mask = 1 << i;
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542 argument(dot->src[1], right, i);
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546 case EOpMatrixTimesVector:
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547 if(visit == PostVisit)
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549 Instruction *mul = emit(sw::Shader::OPCODE_MUL, result, left, right);
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550 mul->src[1].swizzle = 0x00;
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552 for(int i = 1; i < leftType.getNominalSize(); i++)
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554 Instruction *mad = emit(sw::Shader::OPCODE_MAD, result, left, right, result);
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555 argument(mad->src[0], left, i);
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556 mad->src[1].swizzle = i * 0x55;
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560 case EOpMatrixTimesMatrix:
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561 if(visit == PostVisit)
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563 int dim = leftType.getNominalSize();
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565 for(int i = 0; i < dim; i++)
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567 Instruction *mul = emit(sw::Shader::OPCODE_MUL, result, left, right);
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568 mul->dst.index += i;
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569 argument(mul->src[1], right, i);
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570 mul->src[1].swizzle = 0x00;
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572 for(int j = 1; j < dim; j++)
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574 Instruction *mad = emit(sw::Shader::OPCODE_MAD, result, left, right, result);
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575 mad->dst.index += i;
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576 argument(mad->src[0], left, j);
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577 argument(mad->src[1], right, i);
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578 mad->src[1].swizzle = j * 0x55;
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579 argument(mad->src[2], result, i);
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585 if(trivial(right, 6))
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587 if(visit == PostVisit)
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589 emit(sw::Shader::OPCODE_OR, result, left, right);
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592 else // Short-circuit evaluation
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594 if(visit == InVisit)
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596 emit(sw::Shader::OPCODE_MOV, result, left);
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597 Instruction *ifnot = emit(sw::Shader::OPCODE_IF, 0, result);
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598 ifnot->src[0].modifier = sw::Shader::MODIFIER_NOT;
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600 else if(visit == PostVisit)
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602 emit(sw::Shader::OPCODE_MOV, result, right);
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603 emit(sw::Shader::OPCODE_ENDIF);
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607 case EOpLogicalXor: if(visit == PostVisit) emit(sw::Shader::OPCODE_XOR, result, left, right); break;
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608 case EOpLogicalAnd:
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609 if(trivial(right, 6))
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611 if(visit == PostVisit)
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613 emit(sw::Shader::OPCODE_AND, result, left, right);
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616 else // Short-circuit evaluation
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618 if(visit == InVisit)
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620 emit(sw::Shader::OPCODE_MOV, result, left);
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621 emit(sw::Shader::OPCODE_IF, 0, result);
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623 else if(visit == PostVisit)
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625 emit(sw::Shader::OPCODE_MOV, result, right);
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626 emit(sw::Shader::OPCODE_ENDIF);
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630 default: UNREACHABLE(node->getOp());
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636 bool OutputASM::visitUnary(Visit visit, TIntermUnary *node)
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638 if(currentScope != emitScope)
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643 TIntermTyped *result = node;
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644 TIntermTyped *arg = node->getOperand();
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645 TBasicType basicType = arg->getType().getBasicType();
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653 if(basicType == EbtInt || basicType == EbtUInt)
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659 one_value.f = 1.0f;
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662 Constant one(one_value.f, one_value.f, one_value.f, one_value.f);
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663 Constant rad(1.74532925e-2f, 1.74532925e-2f, 1.74532925e-2f, 1.74532925e-2f);
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664 Constant deg(5.72957795e+1f, 5.72957795e+1f, 5.72957795e+1f, 5.72957795e+1f);
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666 switch(node->getOp())
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669 if(visit == PostVisit)
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671 sw::Shader::Opcode negOpcode = getOpcode(sw::Shader::OPCODE_NEG, arg);
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672 for(int index = 0; index < arg->totalRegisterCount(); index++)
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674 Instruction *neg = emit(negOpcode, result, arg);
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675 neg->dst.index += index;
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676 argument(neg->src[0], arg, index);
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680 case EOpVectorLogicalNot: if(visit == PostVisit) emit(sw::Shader::OPCODE_NOT, result, arg); break;
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681 case EOpLogicalNot: if(visit == PostVisit) emit(sw::Shader::OPCODE_NOT, result, arg); break;
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682 case EOpPostIncrement:
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683 if(visit == PostVisit)
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687 sw::Shader::Opcode addOpcode = getOpcode(sw::Shader::OPCODE_ADD, arg);
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688 for(int index = 0; index < arg->totalRegisterCount(); index++)
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690 Instruction *add = emit(addOpcode, arg, arg, &one);
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691 add->dst.index += index;
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692 argument(add->src[0], arg, index);
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695 assignLvalue(arg, arg);
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698 case EOpPostDecrement:
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699 if(visit == PostVisit)
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703 sw::Shader::Opcode subOpcode = getOpcode(sw::Shader::OPCODE_SUB, arg);
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704 for(int index = 0; index < arg->totalRegisterCount(); index++)
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706 Instruction *sub = emit(subOpcode, arg, arg, &one);
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707 sub->dst.index += index;
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708 argument(sub->src[0], arg, index);
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711 assignLvalue(arg, arg);
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714 case EOpPreIncrement:
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715 if(visit == PostVisit)
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717 sw::Shader::Opcode addOpcode = getOpcode(sw::Shader::OPCODE_ADD, arg);
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718 for(int index = 0; index < arg->totalRegisterCount(); index++)
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720 Instruction *add = emit(addOpcode, result, arg, &one);
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721 add->dst.index += index;
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722 argument(add->src[0], arg, index);
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725 assignLvalue(arg, result);
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728 case EOpPreDecrement:
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729 if(visit == PostVisit)
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731 sw::Shader::Opcode subOpcode = getOpcode(sw::Shader::OPCODE_SUB, arg);
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732 for(int index = 0; index < arg->totalRegisterCount(); index++)
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734 Instruction *sub = emit(subOpcode, result, arg, &one);
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735 sub->dst.index += index;
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736 argument(sub->src[0], arg, index);
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739 assignLvalue(arg, result);
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742 case EOpRadians: if(visit == PostVisit) emit(sw::Shader::OPCODE_MUL, result, arg, &rad); break;
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743 case EOpDegrees: if(visit == PostVisit) emit(sw::Shader::OPCODE_MUL, result, arg, °); break;
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744 case EOpSin: if(visit == PostVisit) emit(sw::Shader::OPCODE_SIN, result, arg); break;
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745 case EOpCos: if(visit == PostVisit) emit(sw::Shader::OPCODE_COS, result, arg); break;
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746 case EOpTan: if(visit == PostVisit) emit(sw::Shader::OPCODE_TAN, result, arg); break;
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747 case EOpAsin: if(visit == PostVisit) emit(sw::Shader::OPCODE_ASIN, result, arg); break;
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748 case EOpAcos: if(visit == PostVisit) emit(sw::Shader::OPCODE_ACOS, result, arg); break;
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749 case EOpAtan: if(visit == PostVisit) emit(sw::Shader::OPCODE_ATAN, result, arg); break;
\r
750 case EOpSinh: if(visit == PostVisit) emit(sw::Shader::OPCODE_SINH, result, arg); break;
\r
751 case EOpCosh: if(visit == PostVisit) emit(sw::Shader::OPCODE_COSH, result, arg); break;
\r
752 case EOpTanh: if(visit == PostVisit) emit(sw::Shader::OPCODE_TANH, result, arg); break;
\r
753 case EOpAsinh: if(visit == PostVisit) emit(sw::Shader::OPCODE_ASINH, result, arg); break;
\r
754 case EOpAcosh: if(visit == PostVisit) emit(sw::Shader::OPCODE_ACOSH, result, arg); break;
\r
755 case EOpAtanh: if(visit == PostVisit) emit(sw::Shader::OPCODE_ATANH, result, arg); break;
\r
756 case EOpExp: if(visit == PostVisit) emit(sw::Shader::OPCODE_EXP, result, arg); break;
\r
757 case EOpLog: if(visit == PostVisit) emit(sw::Shader::OPCODE_LOG, result, arg); break;
\r
758 case EOpExp2: if(visit == PostVisit) emit(sw::Shader::OPCODE_EXP2, result, arg); break;
\r
759 case EOpLog2: if(visit == PostVisit) emit(sw::Shader::OPCODE_LOG2, result, arg); break;
\r
760 case EOpSqrt: if(visit == PostVisit) emit(sw::Shader::OPCODE_SQRT, result, arg); break;
\r
761 case EOpInverseSqrt: if(visit == PostVisit) emit(sw::Shader::OPCODE_RSQ, result, arg); break;
\r
762 case EOpAbs: if(visit == PostVisit) emit(sw::Shader::OPCODE_ABS, result, arg); break;
\r
763 case EOpSign: if(visit == PostVisit) emit(sw::Shader::OPCODE_SGN, result, arg); break;
\r
764 case EOpFloor: if(visit == PostVisit) emit(sw::Shader::OPCODE_FLOOR, result, arg); break;
\r
765 case EOpTrunc: if(visit == PostVisit) emit(sw::Shader::OPCODE_TRUNC, result, arg); break;
\r
766 case EOpRound: if(visit == PostVisit) emit(sw::Shader::OPCODE_ROUND, result, arg); break;
\r
767 case EOpRoundEven: if(visit == PostVisit) emit(sw::Shader::OPCODE_ROUNDEVEN, result, arg); break;
\r
768 case EOpCeil: if(visit == PostVisit) emit(sw::Shader::OPCODE_CEIL, result, arg, result); break;
\r
769 case EOpFract: if(visit == PostVisit) emit(sw::Shader::OPCODE_FRC, result, arg); break;
\r
770 case EOpIsNan: if(visit == PostVisit) emit(sw::Shader::OPCODE_ISNAN, result, arg); break;
\r
771 case EOpIsInf: if(visit == PostVisit) emit(sw::Shader::OPCODE_ISINF, result, arg); break;
\r
772 case EOpLength: if(visit == PostVisit) emit(sw::Shader::OPCODE_LEN(dim(arg)), result, arg); break;
\r
773 case EOpNormalize: if(visit == PostVisit) emit(sw::Shader::OPCODE_NRM(dim(arg)), result, arg); break;
\r
774 case EOpDFdx: if(visit == PostVisit) emit(sw::Shader::OPCODE_DFDX, result, arg); break;
\r
775 case EOpDFdy: if(visit == PostVisit) emit(sw::Shader::OPCODE_DFDY, result, arg); break;
\r
776 case EOpFwidth: if(visit == PostVisit) emit(sw::Shader::OPCODE_FWIDTH, result, arg); break;
\r
777 case EOpAny: if(visit == PostVisit) emit(sw::Shader::OPCODE_ANY, result, arg); break;
\r
778 case EOpAll: if(visit == PostVisit) emit(sw::Shader::OPCODE_ALL, result, arg); break;
\r
779 case EOpFloatBitsToInt: if(visit == PostVisit) emit(sw::Shader::OPCODE_FLOATBITSTOINT, result, arg); break;
\r
780 case EOpFloatBitsToUint: if(visit == PostVisit) emit(sw::Shader::OPCODE_FLOATBITSTOUINT, result, arg); break;
\r
781 case EOpIntBitsToFloat: if(visit == PostVisit) emit(sw::Shader::OPCODE_INTBITSTOFLOAT, result, arg); break;
\r
782 case EOpUintBitsToFloat: if(visit == PostVisit) emit(sw::Shader::OPCODE_UINTBITSTOFLOAT, result, arg); break;
\r
783 case EOpPackSnorm2x16: if(visit == PostVisit) emit(sw::Shader::OPCODE_PACKSNORM2x16, result, arg); break;
\r
784 case EOpPackUnorm2x16: if(visit == PostVisit) emit(sw::Shader::OPCODE_PACKUNORM2x16, result, arg); break;
\r
785 case EOpPackHalf2x16: if(visit == PostVisit) emit(sw::Shader::OPCODE_PACKHALF2x16, result, arg); break;
\r
786 case EOpUnpackSnorm2x16: if(visit == PostVisit) emit(sw::Shader::OPCODE_UNPACKSNORM2x16, result, arg); break;
\r
787 case EOpUnpackUnorm2x16: if(visit == PostVisit) emit(sw::Shader::OPCODE_UNPACKUNORM2x16, result, arg); break;
\r
788 case EOpUnpackHalf2x16: if(visit == PostVisit) emit(sw::Shader::OPCODE_UNPACKHALF2x16, result, arg); break;
\r
790 if(visit == PostVisit)
\r
792 int numCols = arg->getNominalSize();
\r
793 int numRows = arg->getSecondarySize();
\r
794 for(int i = 0; i < numCols; ++i)
\r
796 for(int j = 0; j < numRows; ++j)
\r
798 Instruction *mov = emit(sw::Shader::OPCODE_MOV, result, arg);
\r
799 mov->src[0].index += i;
\r
800 mov->src[0].swizzle = 0x55 * j;
\r
801 mov->dst.index += j;
\r
802 mov->dst.mask = 1 << i;
\r
807 default: UNREACHABLE(node->getOp());
\r
813 bool OutputASM::visitAggregate(Visit visit, TIntermAggregate *node)
\r
815 if(currentScope != emitScope && node->getOp() != EOpFunction && node->getOp() != EOpSequence)
\r
820 Constant zero(0.0f, 0.0f, 0.0f, 0.0f);
\r
822 TIntermTyped *result = node;
\r
823 const TType &resultType = node->getType();
\r
824 TIntermSequence &arg = node->getSequence();
\r
825 int argumentCount = arg.size();
\r
827 switch(node->getOp())
\r
829 case EOpSequence: break;
\r
830 case EOpDeclaration: break;
\r
831 case EOpPrototype: break;
\r
833 if(visit == PostVisit)
\r
835 copy(result, arg[1]);
\r
839 if(visit == PreVisit)
\r
841 const TString &name = node->getName();
\r
843 if(emitScope == FUNCTION)
\r
845 if(functionArray.size() > 1) // No need for a label when there's only main()
\r
847 Instruction *label = emit(sw::Shader::OPCODE_LABEL);
\r
848 label->dst.type = sw::Shader::PARAMETER_LABEL;
\r
850 const Function *function = findFunction(name);
\r
851 ASSERT(function); // Should have been added during global pass
\r
852 label->dst.index = function->label;
\r
853 currentFunction = function->label;
\r
856 else if(emitScope == GLOBAL)
\r
858 if(name != "main(")
\r
860 TIntermSequence &arguments = node->getSequence()[0]->getAsAggregate()->getSequence();
\r
861 functionArray.push_back(Function(functionArray.size(), name, &arguments, node));
\r
864 else UNREACHABLE(emitScope);
\r
866 currentScope = FUNCTION;
\r
868 else if(visit == PostVisit)
\r
870 if(emitScope == FUNCTION)
\r
872 if(functionArray.size() > 1) // No need to return when there's only main()
\r
874 emit(sw::Shader::OPCODE_RET);
\r
878 currentScope = GLOBAL;
\r
881 case EOpFunctionCall:
\r
882 if(visit == PostVisit)
\r
884 if(node->isUserDefined())
\r
886 const TString &name = node->getName();
\r
887 const Function *function = findFunction(name);
\r
891 mContext.error(node->getLine(), "function definition not found", name.c_str());
\r
895 TIntermSequence &arguments = *function->arg;
\r
897 for(int i = 0; i < argumentCount; i++)
\r
899 TIntermTyped *in = arguments[i]->getAsTyped();
\r
901 if(in->getQualifier() == EvqIn ||
\r
902 in->getQualifier() == EvqInOut ||
\r
903 in->getQualifier() == EvqConstReadOnly)
\r
909 Instruction *call = emit(sw::Shader::OPCODE_CALL);
\r
910 call->dst.type = sw::Shader::PARAMETER_LABEL;
\r
911 call->dst.index = function->label;
\r
913 if(function->ret && function->ret->getType().getBasicType() != EbtVoid)
\r
915 copy(result, function->ret);
\r
918 for(int i = 0; i < argumentCount; i++)
\r
920 TIntermTyped *argument = arguments[i]->getAsTyped();
\r
921 TIntermTyped *out = arg[i]->getAsTyped();
\r
923 if(argument->getQualifier() == EvqOut ||
\r
924 argument->getQualifier() == EvqInOut)
\r
926 copy(out, argument);
\r
932 TString name = TFunction::unmangleName(node->getName());
\r
934 if(name == "texture" || name == "texture2D" || name == "textureCube" || name == "texture3D")
\r
936 if(argumentCount == 2)
\r
938 emit(sw::Shader::OPCODE_TEX, result, arg[1], arg[0]);
\r
940 else if(argumentCount == 3) // bias
\r
942 Temporary uvwb(this);
\r
943 emit(sw::Shader::OPCODE_MOV, &uvwb, arg[1]);
\r
944 Instruction *bias = emit(sw::Shader::OPCODE_MOV, &uvwb, arg[2]);
\r
945 bias->dst.mask = 0x8;
\r
947 Instruction *tex = emit(sw::Shader::OPCODE_TEX, result, &uvwb, arg[0]); // FIXME: Implement an efficient TEXLDB instruction
\r
950 else UNREACHABLE(argumentCount);
\r
952 else if(name == "texture2DProj" || name == "textureProj")
\r
954 TIntermTyped *t = arg[1]->getAsTyped();
\r
956 if(argumentCount == 2)
\r
958 Instruction *tex = emit(sw::Shader::OPCODE_TEX, result, arg[1], arg[0]);
\r
959 tex->project = true;
\r
961 if(t->getNominalSize() == 3)
\r
963 tex->src[0].swizzle = 0xA4;
\r
965 else ASSERT(t->getNominalSize() == 4);
\r
967 else if(argumentCount == 3) // bias
\r
969 Temporary proj(this);
\r
971 if(t->getNominalSize() == 3)
\r
973 Instruction *div = emit(sw::Shader::OPCODE_DIV, &proj, arg[1], arg[1]);
\r
974 div->src[1].swizzle = 0xAA;
\r
975 div->dst.mask = 0x3;
\r
977 else if(t->getNominalSize() == 4)
\r
979 Instruction *div = emit(sw::Shader::OPCODE_DIV, &proj, arg[1], arg[1]);
\r
980 div->src[1].swizzle = 0xFF;
\r
981 div->dst.mask = 0x3;
\r
983 else UNREACHABLE(t->getNominalSize());
\r
985 Instruction *bias = emit(sw::Shader::OPCODE_MOV, &proj, arg[2]);
\r
986 bias->dst.mask = 0x8;
\r
988 Instruction *tex = emit(sw::Shader::OPCODE_TEX, result, &proj, arg[0]);
\r
991 else UNREACHABLE(argumentCount);
\r
993 else if(name == "texture2DLod" || name == "textureCubeLod" || name == "textureLod")
\r
995 Temporary uvwb(this);
\r
996 emit(sw::Shader::OPCODE_MOV, &uvwb, arg[1]);
\r
997 Instruction *lod = emit(sw::Shader::OPCODE_MOV, &uvwb, arg[2]);
\r
998 lod->dst.mask = 0x8;
\r
1000 emit(sw::Shader::OPCODE_TEXLDL, result, &uvwb, arg[0]);
\r
1002 else if(name == "texture2DProjLod" || name == "textureProjLod")
\r
1004 TIntermTyped *t = arg[1]->getAsTyped();
\r
1005 Temporary proj(this);
\r
1007 if(t->getNominalSize() == 3)
\r
1009 Instruction *div = emit(sw::Shader::OPCODE_DIV, &proj, arg[1], arg[1]);
\r
1010 div->src[1].swizzle = 0xAA;
\r
1011 div->dst.mask = 0x3;
\r
1013 else if(t->getNominalSize() == 4)
\r
1015 Instruction *div = emit(sw::Shader::OPCODE_DIV, &proj, arg[1], arg[1]);
\r
1016 div->src[1].swizzle = 0xFF;
\r
1017 div->dst.mask = 0x3;
\r
1019 else UNREACHABLE(t->getNominalSize());
\r
1021 Instruction *lod = emit(sw::Shader::OPCODE_MOV, &proj, arg[2]);
\r
1022 lod->dst.mask = 0x8;
\r
1024 emit(sw::Shader::OPCODE_TEXLDL, result, &proj, arg[0]);
\r
1026 else UNREACHABLE(0);
\r
1030 case EOpParameters:
\r
1032 case EOpConstructFloat:
\r
1033 case EOpConstructVec2:
\r
1034 case EOpConstructVec3:
\r
1035 case EOpConstructVec4:
\r
1036 case EOpConstructBool:
\r
1037 case EOpConstructBVec2:
\r
1038 case EOpConstructBVec3:
\r
1039 case EOpConstructBVec4:
\r
1040 case EOpConstructInt:
\r
1041 case EOpConstructIVec2:
\r
1042 case EOpConstructIVec3:
\r
1043 case EOpConstructIVec4:
\r
1044 case EOpConstructUInt:
\r
1045 case EOpConstructUVec2:
\r
1046 case EOpConstructUVec3:
\r
1047 case EOpConstructUVec4:
\r
1048 if(visit == PostVisit)
\r
1050 int component = 0;
\r
1052 for(int i = 0; i < argumentCount; i++)
\r
1054 TIntermTyped *argi = arg[i]->getAsTyped();
\r
1055 int size = argi->getNominalSize();
\r
1057 if(!argi->isMatrix())
\r
1059 Instruction *mov = emitCast(result, argi);
\r
1060 mov->dst.mask = (0xF << component) & 0xF;
\r
1061 mov->src[0].swizzle = readSwizzle(argi, size) << (component * 2);
\r
1063 component += size;
\r
1069 while(component < resultType.getNominalSize())
\r
1071 Instruction *mov = emitCast(result, argi);
\r
1072 mov->dst.mask = (0xF << component) & 0xF;
\r
1073 mov->src[0].index += column;
\r
1074 mov->src[0].swizzle = readSwizzle(argi, size) << (component * 2);
\r
1077 component += size;
\r
1083 case EOpConstructMat2:
\r
1084 case EOpConstructMat2x3:
\r
1085 case EOpConstructMat2x4:
\r
1086 case EOpConstructMat3x2:
\r
1087 case EOpConstructMat3:
\r
1088 case EOpConstructMat3x4:
\r
1089 case EOpConstructMat4x2:
\r
1090 case EOpConstructMat4x3:
\r
1091 case EOpConstructMat4:
\r
1092 if(visit == PostVisit)
\r
1094 TIntermTyped *arg0 = arg[0]->getAsTyped();
\r
1095 const int outCols = result->getNominalSize();
\r
1096 const int outRows = result->getSecondarySize();
\r
1098 if(arg0->isScalar() && arg.size() == 1) // Construct scale matrix
\r
1100 for(int i = 0; i < outCols; i++)
\r
1102 Instruction *init = emit(sw::Shader::OPCODE_MOV, result, &zero);
\r
1103 init->dst.index += i;
\r
1104 Instruction *mov = emitCast(result, arg0);
\r
1105 mov->dst.index += i;
\r
1106 mov->dst.mask = 1 << i;
\r
1107 ASSERT(mov->src[0].swizzle == 0x00);
\r
1110 else if(arg0->isMatrix())
\r
1112 const int inCols = arg0->getNominalSize();
\r
1113 const int inRows = arg0->getSecondarySize();
\r
1115 for(int i = 0; i < outCols; i++)
\r
1117 if(i >= inCols || outRows > inRows)
\r
1119 // Initialize to identity matrix
\r
1120 Constant col((i == 0 ? 1.0f : 0.0f), (i == 1 ? 1.0f : 0.0f), (i == 2 ? 1.0f : 0.0f), (i == 3 ? 1.0f : 0.0f));
\r
1121 Instruction *mov = emitCast(result, &col);
\r
1122 mov->dst.index += i;
\r
1127 Instruction *mov = emitCast(result, arg0);
\r
1128 mov->dst.index += i;
\r
1129 mov->dst.mask = 0xF >> (4 - inRows);
\r
1130 argument(mov->src[0], arg0, i);
\r
1139 for(int i = 0; i < argumentCount; i++)
\r
1141 TIntermTyped *argi = arg[i]->getAsTyped();
\r
1142 int size = argi->getNominalSize();
\r
1145 while(element < size)
\r
1147 Instruction *mov = emitCast(result, argi);
\r
1148 mov->dst.index += column;
\r
1149 mov->dst.mask = (0xF << row) & 0xF;
\r
1150 mov->src[0].swizzle = (readSwizzle(argi, size) << (row * 2)) + 0x55 * element;
\r
1152 int end = row + size - element;
\r
1153 column = end >= outRows ? column + 1 : column;
\r
1154 element = element + outRows - row;
\r
1155 row = end >= outRows ? 0 : end;
\r
1161 case EOpConstructStruct:
\r
1162 if(visit == PostVisit)
\r
1165 for(int i = 0; i < argumentCount; i++)
\r
1167 TIntermTyped *argi = arg[i]->getAsTyped();
\r
1168 int size = argi->totalRegisterCount();
\r
1170 for(int index = 0; index < size; index++)
\r
1172 Instruction *mov = emit(sw::Shader::OPCODE_MOV, result, argi);
\r
1173 mov->dst.index += index + offset;
\r
1174 mov->dst.mask = writeMask(result, offset + index);
\r
1175 argument(mov->src[0], argi, index);
\r
1182 case EOpLessThan: if(visit == PostVisit) emitCmp(sw::Shader::CONTROL_LT, result, arg[0], arg[1]); break;
\r
1183 case EOpGreaterThan: if(visit == PostVisit) emitCmp(sw::Shader::CONTROL_GT, result, arg[0], arg[1]); break;
\r
1184 case EOpLessThanEqual: if(visit == PostVisit) emitCmp(sw::Shader::CONTROL_LE, result, arg[0], arg[1]); break;
\r
1185 case EOpGreaterThanEqual: if(visit == PostVisit) emitCmp(sw::Shader::CONTROL_GE, result, arg[0], arg[1]); break;
\r
1186 case EOpVectorEqual: if(visit == PostVisit) emitCmp(sw::Shader::CONTROL_EQ, result, arg[0], arg[1]); break;
\r
1187 case EOpVectorNotEqual: if(visit == PostVisit) emitCmp(sw::Shader::CONTROL_NE, result, arg[0], arg[1]); break;
\r
1188 case EOpMod: if(visit == PostVisit) emit(sw::Shader::OPCODE_MOD, result, arg[0], arg[1]); break;
\r
1189 case EOpPow: if(visit == PostVisit) emit(sw::Shader::OPCODE_POW, result, arg[0], arg[1]); break;
\r
1190 case EOpAtan: if(visit == PostVisit) emit(sw::Shader::OPCODE_ATAN2, result, arg[0], arg[1]); break;
\r
1191 case EOpMin: if(visit == PostVisit) emit(getOpcode(sw::Shader::OPCODE_MIN, result), result, arg[0], arg[1]); break;
\r
1192 case EOpMax: if(visit == PostVisit) emit(getOpcode(sw::Shader::OPCODE_MAX, result), result, arg[0], arg[1]); break;
\r
1194 if(visit == PostVisit)
\r
1196 emit(getOpcode(sw::Shader::OPCODE_MAX, result), result, arg[0], arg[1]);
\r
1197 emit(getOpcode(sw::Shader::OPCODE_MIN, result), result, result, arg[2]);
\r
1200 case EOpMix: if(visit == PostVisit) emit(sw::Shader::OPCODE_LRP, result, arg[2], arg[1], arg[0]); break;
\r
1201 case EOpStep: if(visit == PostVisit) emit(sw::Shader::OPCODE_STEP, result, arg[0], arg[1]); break;
\r
1202 case EOpSmoothStep: if(visit == PostVisit) emit(sw::Shader::OPCODE_SMOOTH, result, arg[0], arg[1], arg[2]); break;
\r
1203 case EOpDistance: if(visit == PostVisit) emit(sw::Shader::OPCODE_DIST(dim(arg[0])), result, arg[0], arg[1]); break;
\r
1204 case EOpDot: if(visit == PostVisit) emit(sw::Shader::OPCODE_DP(dim(arg[0])), result, arg[0], arg[1]); break;
\r
1205 case EOpCross: if(visit == PostVisit) emit(sw::Shader::OPCODE_CRS, result, arg[0], arg[1]); break;
\r
1206 case EOpFaceForward: if(visit == PostVisit) emit(sw::Shader::OPCODE_FORWARD(dim(arg[0])), result, arg[0], arg[1], arg[2]); break;
\r
1207 case EOpReflect: if(visit == PostVisit) emit(sw::Shader::OPCODE_REFLECT(dim(arg[0])), result, arg[0], arg[1]); break;
\r
1208 case EOpRefract: if(visit == PostVisit) emit(sw::Shader::OPCODE_REFRACT(dim(arg[0])), result, arg[0], arg[1], arg[2]); break;
\r
1210 if(visit == PostVisit)
\r
1212 ASSERT(dim2(arg[0]) == dim2(arg[1]));
\r
1214 for(int i = 0; i < dim2(arg[0]); i++)
\r
1216 Instruction *mul = emit(sw::Shader::OPCODE_MUL, result, arg[0], arg[1]);
\r
1217 mul->dst.index += i;
\r
1218 argument(mul->src[0], arg[0], i);
\r
1219 argument(mul->src[1], arg[1], i);
\r
1223 case EOpOuterProduct:
\r
1224 if(visit == PostVisit)
\r
1226 for(int i = 0; i < dim(arg[1]); i++)
\r
1228 Instruction *mul = emit(sw::Shader::OPCODE_MUL, result, arg[0], arg[1]);
\r
1229 mul->dst.index += i;
\r
1230 mul->src[1].swizzle = 0x55 * i;
\r
1234 default: UNREACHABLE(node->getOp());
\r
1240 bool OutputASM::visitSelection(Visit visit, TIntermSelection *node)
\r
1242 if(currentScope != emitScope)
\r
1247 TIntermTyped *condition = node->getCondition();
\r
1248 TIntermNode *trueBlock = node->getTrueBlock();
\r
1249 TIntermNode *falseBlock = node->getFalseBlock();
\r
1250 TIntermConstantUnion *constantCondition = condition->getAsConstantUnion();
\r
1252 condition->traverse(this);
\r
1254 if(node->usesTernaryOperator())
\r
1256 if(constantCondition)
\r
1258 bool trueCondition = constantCondition->getUnionArrayPointer()->getBConst();
\r
1262 trueBlock->traverse(this);
\r
1263 copy(node, trueBlock);
\r
1267 falseBlock->traverse(this);
\r
1268 copy(node, falseBlock);
\r
1271 else if(trivial(node, 6)) // Fast to compute both potential results and no side effects
\r
1273 trueBlock->traverse(this);
\r
1274 falseBlock->traverse(this);
\r
1275 emit(sw::Shader::OPCODE_SELECT, node, condition, trueBlock, falseBlock);
\r
1279 emit(sw::Shader::OPCODE_IF, 0, condition);
\r
1283 trueBlock->traverse(this);
\r
1284 copy(node, trueBlock);
\r
1289 emit(sw::Shader::OPCODE_ELSE);
\r
1290 falseBlock->traverse(this);
\r
1291 copy(node, falseBlock);
\r
1294 emit(sw::Shader::OPCODE_ENDIF);
\r
1297 else // if/else statement
\r
1299 if(constantCondition)
\r
1301 bool trueCondition = constantCondition->getUnionArrayPointer()->getBConst();
\r
1307 trueBlock->traverse(this);
\r
1314 falseBlock->traverse(this);
\r
1320 emit(sw::Shader::OPCODE_IF, 0, condition);
\r
1324 trueBlock->traverse(this);
\r
1329 emit(sw::Shader::OPCODE_ELSE);
\r
1330 falseBlock->traverse(this);
\r
1333 emit(sw::Shader::OPCODE_ENDIF);
\r
1340 bool OutputASM::visitLoop(Visit visit, TIntermLoop *node)
\r
1342 if(currentScope != emitScope)
\r
1347 unsigned int iterations = loopCount(node);
\r
1349 if(iterations == 0)
\r
1354 bool unroll = (iterations <= 4);
\r
1358 DetectLoopDiscontinuity detectLoopDiscontinuity;
\r
1359 unroll = !detectLoopDiscontinuity.traverse(node);
\r
1362 TIntermNode *init = node->getInit();
\r
1363 TIntermTyped *condition = node->getCondition();
\r
1364 TIntermTyped *expression = node->getExpression();
\r
1365 TIntermNode *body = node->getBody();
\r
1367 if(node->getType() == ELoopDoWhile)
\r
1369 Temporary iterate(this);
\r
1370 Constant True(true);
\r
1371 emit(sw::Shader::OPCODE_MOV, &iterate, &True);
\r
1373 emit(sw::Shader::OPCODE_WHILE, 0, &iterate); // FIXME: Implement real do-while
\r
1377 body->traverse(this);
\r
1380 emit(sw::Shader::OPCODE_TEST);
\r
1382 condition->traverse(this);
\r
1383 emit(sw::Shader::OPCODE_MOV, &iterate, condition);
\r
1385 emit(sw::Shader::OPCODE_ENDWHILE);
\r
1391 init->traverse(this);
\r
1396 for(unsigned int i = 0; i < iterations; i++)
\r
1398 // condition->traverse(this); // Condition could contain statements, but not in an unrollable loop
\r
1402 body->traverse(this);
\r
1407 expression->traverse(this);
\r
1415 condition->traverse(this);
\r
1418 emit(sw::Shader::OPCODE_WHILE, 0, condition);
\r
1422 body->traverse(this);
\r
1425 emit(sw::Shader::OPCODE_TEST);
\r
1429 expression->traverse(this);
\r
1434 condition->traverse(this);
\r
1437 emit(sw::Shader::OPCODE_ENDWHILE);
\r
1444 bool OutputASM::visitBranch(Visit visit, TIntermBranch *node)
\r
1446 if(currentScope != emitScope)
\r
1451 switch(node->getFlowOp())
\r
1453 case EOpKill: if(visit == PostVisit) emit(sw::Shader::OPCODE_DISCARD); break;
\r
1454 case EOpBreak: if(visit == PostVisit) emit(sw::Shader::OPCODE_BREAK); break;
\r
1455 case EOpContinue: if(visit == PostVisit) emit(sw::Shader::OPCODE_CONTINUE); break;
\r
1457 if(visit == PostVisit)
\r
1459 TIntermTyped *value = node->getExpression();
\r
1463 copy(functionArray[currentFunction].ret, value);
\r
1466 emit(sw::Shader::OPCODE_LEAVE);
\r
1469 default: UNREACHABLE(node->getFlowOp());
\r
1475 bool OutputASM::isSamplerRegister(TIntermTyped *operand)
\r
1477 return operand && isSamplerRegister(operand->getType());
\r
1480 bool OutputASM::isSamplerRegister(const TType &type)
\r
1482 // A sampler register's qualifiers can be:
\r
1483 // - EvqUniform: The sampler uniform is used as is in the code (default case).
\r
1484 // - EvqTemporary: The sampler is indexed. It's still a sampler register.
\r
1485 // - EvqIn (and other similar types): The sampler has been passed as a function argument. At this point,
\r
1486 // the sampler has been copied and is no longer a sampler register.
\r
1487 return IsSampler(type.getBasicType()) && (type.getQualifier() == EvqUniform || type.getQualifier() == EvqTemporary);
\r
1490 Instruction *OutputASM::emit(sw::Shader::Opcode op, TIntermTyped *dst, TIntermNode *src0, TIntermNode *src1, TIntermNode *src2, int index)
\r
1492 if(isSamplerRegister(dst))
\r
1494 op = sw::Shader::OPCODE_NULL; // Can't assign to a sampler, but this is hit when indexing sampler arrays
\r
1497 Instruction *instruction = new Instruction(op);
\r
1501 instruction->dst.type = registerType(dst);
\r
1502 instruction->dst.index = registerIndex(dst) + index;
\r
1503 instruction->dst.mask = writeMask(dst);
\r
1504 instruction->dst.integer = (dst->getBasicType() == EbtInt);
\r
1507 argument(instruction->src[0], src0, index);
\r
1508 argument(instruction->src[1], src1, index);
\r
1509 argument(instruction->src[2], src2, index);
\r
1511 shader->append(instruction);
\r
1513 return instruction;
\r
1516 Instruction *OutputASM::emitCast(TIntermTyped *dst, TIntermTyped *src)
\r
1518 switch(src->getBasicType())
\r
1521 switch(dst->getBasicType())
\r
1523 case EbtInt: return emit(sw::Shader::OPCODE_B2I, dst, src);
\r
1524 case EbtUInt: return emit(sw::Shader::OPCODE_B2U, dst, src);
\r
1525 case EbtFloat: return emit(sw::Shader::OPCODE_B2F, dst, src);
\r
1530 switch(dst->getBasicType())
\r
1532 case EbtBool: return emit(sw::Shader::OPCODE_I2B, dst, src);
\r
1533 case EbtFloat: return emit(sw::Shader::OPCODE_I2F, dst, src);
\r
1538 switch(dst->getBasicType())
\r
1540 case EbtBool: return emit(sw::Shader::OPCODE_U2B, dst, src);
\r
1541 case EbtFloat: return emit(sw::Shader::OPCODE_U2F, dst, src);
\r
1546 switch(dst->getBasicType())
\r
1548 case EbtBool: return emit(sw::Shader::OPCODE_F2B, dst, src);
\r
1549 case EbtInt: return emit(sw::Shader::OPCODE_F2I, dst, src);
\r
1550 case EbtUInt: return emit(sw::Shader::OPCODE_F2U, dst, src);
\r
1558 return emit(sw::Shader::OPCODE_MOV, dst, src);
\r
1561 void OutputASM::emitBinary(sw::Shader::Opcode op, TIntermTyped *dst, TIntermNode *src0, TIntermNode *src1, TIntermNode *src2)
\r
1563 for(int index = 0; index < dst->elementRegisterCount(); index++)
\r
1565 emit(op, dst, src0, src1, src2, index);
\r
1569 void OutputASM::emitAssign(sw::Shader::Opcode op, TIntermTyped *result, TIntermTyped *lhs, TIntermTyped *src0, TIntermTyped *src1)
\r
1571 emitBinary(op, result, src0, src1);
\r
1572 assignLvalue(lhs, result);
\r
1575 void OutputASM::emitCmp(sw::Shader::Control cmpOp, TIntermTyped *dst, TIntermNode *left, TIntermNode *right, int index)
\r
1577 sw::Shader::Opcode opcode;
\r
1578 switch(left->getAsTyped()->getBasicType())
\r
1582 opcode = sw::Shader::OPCODE_ICMP;
\r
1585 opcode = sw::Shader::OPCODE_UCMP;
\r
1588 opcode = sw::Shader::OPCODE_CMP;
\r
1592 Instruction *cmp = emit(opcode, dst, left, right);
\r
1593 cmp->control = cmpOp;
\r
1594 argument(cmp->src[0], left, index);
\r
1595 argument(cmp->src[1], right, index);
\r
1598 int componentCount(const TType &type, int registers)
\r
1600 if(registers == 0)
\r
1605 if(type.isArray() && registers >= type.elementRegisterCount())
\r
1607 int index = registers / type.elementRegisterCount();
\r
1608 registers -= index * type.elementRegisterCount();
\r
1609 return index * type.getElementSize() + componentCount(type, registers);
\r
1612 if(type.isStruct() || type.isInterfaceBlock())
\r
1614 const TFieldList& fields = type.getStruct() ? type.getStruct()->fields() : type.getInterfaceBlock()->fields();
\r
1617 for(TFieldList::const_iterator field = fields.begin(); field != fields.end(); field++)
\r
1619 const TType &fieldType = *((*field)->type());
\r
1621 if(fieldType.totalRegisterCount() <= registers)
\r
1623 registers -= fieldType.totalRegisterCount();
\r
1624 elements += fieldType.getObjectSize();
\r
1626 else // Register within this field
\r
1628 return elements + componentCount(fieldType, registers);
\r
1632 else if(type.isMatrix())
\r
1634 return registers * type.registerSize();
\r
1641 int registerSize(const TType &type, int registers)
\r
1643 if(registers == 0)
\r
1645 if(type.isStruct())
\r
1647 return registerSize(*((*(type.getStruct()->fields().begin()))->type()), 0);
\r
1650 return type.registerSize();
\r
1653 if(type.isArray() && registers >= type.elementRegisterCount())
\r
1655 int index = registers / type.elementRegisterCount();
\r
1656 registers -= index * type.elementRegisterCount();
\r
1657 return registerSize(type, registers);
\r
1660 if(type.isStruct() || type.isInterfaceBlock())
\r
1662 const TFieldList& fields = type.getStruct() ? type.getStruct()->fields() : type.getInterfaceBlock()->fields();
\r
1665 for(TFieldList::const_iterator field = fields.begin(); field != fields.end(); field++)
\r
1667 const TType &fieldType = *((*field)->type());
\r
1669 if(fieldType.totalRegisterCount() <= registers)
\r
1671 registers -= fieldType.totalRegisterCount();
\r
1672 elements += fieldType.getObjectSize();
\r
1674 else // Register within this field
\r
1676 return registerSize(fieldType, registers);
\r
1680 else if(type.isMatrix())
\r
1682 return registerSize(type, 0);
\r
1689 void OutputASM::argument(sw::Shader::SourceParameter ¶meter, TIntermNode *argument, int index)
\r
1693 TIntermTyped *arg = argument->getAsTyped();
\r
1694 const TType &type = arg->getType();
\r
1695 index = (index >= arg->totalRegisterCount()) ? arg->totalRegisterCount() - 1 : index;
\r
1697 int size = registerSize(type, index);
\r
1699 parameter.type = registerType(arg);
\r
1701 if(arg->getQualifier() == EvqConstExpr)
\r
1703 int component = componentCount(type, index);
\r
1704 ConstantUnion *constants = arg->getAsConstantUnion()->getUnionArrayPointer();
\r
1706 for(int i = 0; i < 4; i++)
\r
1708 if(size == 1) // Replicate
\r
1710 parameter.value[i] = constants[component + 0].getAsFloat();
\r
1714 parameter.value[i] = constants[component + i].getAsFloat();
\r
1718 parameter.value[i] = 0.0f;
\r
1724 parameter.index = registerIndex(arg) + index;
\r
1726 if(isSamplerRegister(arg))
\r
1728 TIntermBinary *binary = argument->getAsBinaryNode();
\r
1732 TIntermTyped *left = binary->getLeft();
\r
1733 TIntermTyped *right = binary->getRight();
\r
1735 switch(binary->getOp())
\r
1737 case EOpIndexDirect:
\r
1738 parameter.index += right->getAsConstantUnion()->getIConst(0);
\r
1740 case EOpIndexIndirect:
\r
1741 if(left->getArraySize() > 1)
\r
1743 parameter.rel.type = registerType(binary->getRight());
\r
1744 parameter.rel.index = registerIndex(binary->getRight());
\r
1745 parameter.rel.scale = 1;
\r
1746 parameter.rel.deterministic = true;
\r
1749 case EOpIndexDirectStruct:
\r
1750 case EOpIndexDirectInterfaceBlock:
\r
1751 parameter.index += right->getAsConstantUnion()->getIConst(0);
\r
1754 UNREACHABLE(binary->getOp());
\r
1760 if(!IsSampler(arg->getBasicType()))
\r
1762 parameter.swizzle = readSwizzle(arg, size);
\r
1767 void OutputASM::copy(TIntermTyped *dst, TIntermNode *src, int offset)
\r
1769 for(int index = 0; index < dst->totalRegisterCount(); index++)
\r
1771 Instruction *mov = emit(sw::Shader::OPCODE_MOV, dst, src);
\r
1772 mov->dst.index += index;
\r
1773 mov->dst.mask = writeMask(dst, index);
\r
1774 argument(mov->src[0], src, offset + index);
\r
1778 int swizzleElement(int swizzle, int index)
\r
1780 return (swizzle >> (index * 2)) & 0x03;
\r
1783 int swizzleSwizzle(int leftSwizzle, int rightSwizzle)
\r
1785 return (swizzleElement(leftSwizzle, swizzleElement(rightSwizzle, 0)) << 0) |
\r
1786 (swizzleElement(leftSwizzle, swizzleElement(rightSwizzle, 1)) << 2) |
\r
1787 (swizzleElement(leftSwizzle, swizzleElement(rightSwizzle, 2)) << 4) |
\r
1788 (swizzleElement(leftSwizzle, swizzleElement(rightSwizzle, 3)) << 6);
\r
1791 void OutputASM::assignLvalue(TIntermTyped *dst, TIntermTyped *src)
\r
1794 ((src->isVector() && (!dst->isVector() || (dst->getNominalSize() != dst->getNominalSize()))) ||
\r
1795 (src->isMatrix() && (!dst->isMatrix() || (src->getNominalSize() != dst->getNominalSize()) || (src->getSecondarySize() != dst->getSecondarySize())))))
\r
1797 return mContext.error(src->getLine(), "Result type should match the l-value type in compound assignment", src->isVector() ? "vector" : "matrix");
\r
1800 TIntermBinary *binary = dst->getAsBinaryNode();
\r
1802 if(binary && binary->getOp() == EOpIndexIndirect && dst->isScalar())
\r
1804 Instruction *insert = new Instruction(sw::Shader::OPCODE_INSERT);
\r
1806 Temporary address(this);
\r
1807 lvalue(insert->dst, address, dst);
\r
1809 insert->src[0].type = insert->dst.type;
\r
1810 insert->src[0].index = insert->dst.index;
\r
1811 insert->src[0].rel = insert->dst.rel;
\r
1812 argument(insert->src[1], src);
\r
1813 argument(insert->src[2], binary->getRight());
\r
1815 shader->append(insert);
\r
1819 for(int offset = 0; offset < dst->totalRegisterCount(); offset++)
\r
1821 Instruction *mov = new Instruction(sw::Shader::OPCODE_MOV);
\r
1823 Temporary address(this);
\r
1824 int swizzle = lvalue(mov->dst, address, dst);
\r
1825 mov->dst.index += offset;
\r
1829 mov->dst.mask = writeMask(dst, offset);
\r
1832 argument(mov->src[0], src, offset);
\r
1833 mov->src[0].swizzle = swizzleSwizzle(mov->src[0].swizzle, swizzle);
\r
1835 shader->append(mov);
\r
1840 int OutputASM::lvalue(sw::Shader::DestinationParameter &dst, Temporary &address, TIntermTyped *node)
\r
1842 TIntermTyped *result = node;
\r
1843 TIntermBinary *binary = node->getAsBinaryNode();
\r
1844 TIntermSymbol *symbol = node->getAsSymbolNode();
\r
1848 TIntermTyped *left = binary->getLeft();
\r
1849 TIntermTyped *right = binary->getRight();
\r
1851 int leftSwizzle = lvalue(dst, address, left); // Resolve the l-value of the left side
\r
1853 switch(binary->getOp())
\r
1855 case EOpIndexDirect:
\r
1857 int rightIndex = right->getAsConstantUnion()->getIConst(0);
\r
1859 if(left->isRegister())
\r
1861 int leftMask = dst.mask;
\r
1864 while((leftMask & dst.mask) == 0)
\r
1866 dst.mask = dst.mask << 1;
\r
1869 int element = swizzleElement(leftSwizzle, rightIndex);
\r
1870 dst.mask = 1 << element;
\r
1874 else if(left->isArray() || left->isMatrix())
\r
1876 dst.index += rightIndex * result->totalRegisterCount();
\r
1879 else UNREACHABLE(0);
\r
1882 case EOpIndexIndirect:
\r
1884 if(left->isRegister())
\r
1886 // Requires INSERT instruction (handled by calling function)
\r
1888 else if(left->isArray() || left->isMatrix())
\r
1890 int scale = result->totalRegisterCount();
\r
1892 if(dst.rel.type == sw::Shader::PARAMETER_VOID) // Use the index register as the relative address directly
\r
1894 if(left->totalRegisterCount() > 1)
\r
1896 sw::Shader::SourceParameter relativeRegister;
\r
1897 argument(relativeRegister, right);
\r
1899 dst.rel.index = relativeRegister.index;
\r
1900 dst.rel.type = relativeRegister.type;
\r
1901 dst.rel.scale = scale;
\r
1902 dst.rel.deterministic = !(vertexShader && left->getQualifier() == EvqUniform);
\r
1905 else if(dst.rel.index != registerIndex(&address)) // Move the previous index register to the address register
\r
1909 Constant oldScale((int)dst.rel.scale);
\r
1910 Instruction *mad = emit(sw::Shader::OPCODE_IMAD, &address, &address, &oldScale, right);
\r
1911 mad->src[0].index = dst.rel.index;
\r
1912 mad->src[0].type = dst.rel.type;
\r
1916 Constant oldScale((int)dst.rel.scale);
\r
1917 Instruction *mul = emit(sw::Shader::OPCODE_IMUL, &address, &address, &oldScale);
\r
1918 mul->src[0].index = dst.rel.index;
\r
1919 mul->src[0].type = dst.rel.type;
\r
1921 Constant newScale(scale);
\r
1922 emit(sw::Shader::OPCODE_IMAD, &address, right, &newScale, &address);
\r
1925 dst.rel.type = sw::Shader::PARAMETER_TEMP;
\r
1926 dst.rel.index = registerIndex(&address);
\r
1927 dst.rel.scale = 1;
\r
1929 else // Just add the new index to the address register
\r
1933 emit(sw::Shader::OPCODE_IADD, &address, &address, right);
\r
1937 Constant newScale(scale);
\r
1938 emit(sw::Shader::OPCODE_IMAD, &address, right, &newScale, &address);
\r
1942 else UNREACHABLE(0);
\r
1945 case EOpIndexDirectStruct:
\r
1946 case EOpIndexDirectInterfaceBlock:
\r
1948 const TFieldList& fields = (binary->getOp() == EOpIndexDirectStruct) ?
\r
1949 left->getType().getStruct()->fields() :
\r
1950 left->getType().getInterfaceBlock()->fields();
\r
1951 int index = right->getAsConstantUnion()->getIConst(0);
\r
1952 int fieldOffset = 0;
\r
1954 for(int i = 0; i < index; i++)
\r
1956 fieldOffset += fields[i]->type()->totalRegisterCount();
\r
1959 dst.type = registerType(left);
\r
1960 dst.index += fieldOffset;
\r
1961 dst.mask = writeMask(right);
\r
1966 case EOpVectorSwizzle:
\r
1968 ASSERT(left->isRegister());
\r
1970 int leftMask = dst.mask;
\r
1973 int rightMask = 0;
\r
1975 TIntermSequence &sequence = right->getAsAggregate()->getSequence();
\r
1977 for(unsigned int i = 0; i < sequence.size(); i++)
\r
1979 int index = sequence[i]->getAsConstantUnion()->getIConst(0);
\r
1981 int element = swizzleElement(leftSwizzle, index);
\r
1982 rightMask = rightMask | (1 << element);
\r
1983 swizzle = swizzle | swizzleElement(leftSwizzle, i) << (element * 2);
\r
1986 dst.mask = leftMask & rightMask;
\r
1992 UNREACHABLE(binary->getOp()); // Not an l-value operator
\r
1998 dst.type = registerType(symbol);
\r
1999 dst.index = registerIndex(symbol);
\r
2000 dst.mask = writeMask(symbol);
\r
2007 sw::Shader::ParameterType OutputASM::registerType(TIntermTyped *operand)
\r
2009 if(isSamplerRegister(operand))
\r
2011 return sw::Shader::PARAMETER_SAMPLER;
\r
2014 const TQualifier qualifier = operand->getQualifier();
\r
2015 if((EvqFragColor == qualifier) || (EvqFragData == qualifier))
\r
2017 if(((EvqFragData == qualifier) && (EvqFragColor == outputQualifier)) ||
\r
2018 ((EvqFragColor == qualifier) && (EvqFragData == outputQualifier)))
\r
2020 mContext.error(operand->getLine(), "static assignment to both gl_FragData and gl_FragColor", "");
\r
2022 outputQualifier = qualifier;
\r
2027 case EvqTemporary: return sw::Shader::PARAMETER_TEMP;
\r
2028 case EvqGlobal: return sw::Shader::PARAMETER_TEMP;
\r
2029 case EvqConstExpr: return sw::Shader::PARAMETER_FLOAT4LITERAL; // All converted to float
\r
2030 case EvqAttribute: return sw::Shader::PARAMETER_INPUT;
\r
2031 case EvqVaryingIn: return sw::Shader::PARAMETER_INPUT;
\r
2032 case EvqVaryingOut: return sw::Shader::PARAMETER_OUTPUT;
\r
2033 case EvqVertexIn: return sw::Shader::PARAMETER_INPUT;
\r
2034 case EvqFragmentOut: return sw::Shader::PARAMETER_COLOROUT;
\r
2035 case EvqVertexOut: return sw::Shader::PARAMETER_OUTPUT;
\r
2036 case EvqFragmentIn: return sw::Shader::PARAMETER_INPUT;
\r
2037 case EvqInvariantVaryingIn: return sw::Shader::PARAMETER_INPUT; // FIXME: Guarantee invariance at the backend
\r
2038 case EvqInvariantVaryingOut: return sw::Shader::PARAMETER_OUTPUT; // FIXME: Guarantee invariance at the backend
\r
2039 case EvqSmooth: return sw::Shader::PARAMETER_OUTPUT;
\r
2040 case EvqFlat: return sw::Shader::PARAMETER_OUTPUT;
\r
2041 case EvqCentroidOut: return sw::Shader::PARAMETER_OUTPUT;
\r
2042 case EvqSmoothIn: return sw::Shader::PARAMETER_INPUT;
\r
2043 case EvqFlatIn: return sw::Shader::PARAMETER_INPUT;
\r
2044 case EvqCentroidIn: return sw::Shader::PARAMETER_INPUT;
\r
2045 case EvqUniform: return sw::Shader::PARAMETER_CONST;
\r
2046 case EvqIn: return sw::Shader::PARAMETER_TEMP;
\r
2047 case EvqOut: return sw::Shader::PARAMETER_TEMP;
\r
2048 case EvqInOut: return sw::Shader::PARAMETER_TEMP;
\r
2049 case EvqConstReadOnly: return sw::Shader::PARAMETER_TEMP;
\r
2050 case EvqPosition: return sw::Shader::PARAMETER_OUTPUT;
\r
2051 case EvqPointSize: return sw::Shader::PARAMETER_OUTPUT;
\r
2052 case EvqInstanceID: return sw::Shader::PARAMETER_MISCTYPE;
\r
2053 case EvqFragCoord: return sw::Shader::PARAMETER_MISCTYPE;
\r
2054 case EvqFrontFacing: return sw::Shader::PARAMETER_MISCTYPE;
\r
2055 case EvqPointCoord: return sw::Shader::PARAMETER_INPUT;
\r
2056 case EvqFragColor: return sw::Shader::PARAMETER_COLOROUT;
\r
2057 case EvqFragData: return sw::Shader::PARAMETER_COLOROUT;
\r
2058 default: UNREACHABLE(qualifier);
\r
2061 return sw::Shader::PARAMETER_VOID;
\r
2064 int OutputASM::registerIndex(TIntermTyped *operand)
\r
2066 if(isSamplerRegister(operand))
\r
2068 return samplerRegister(operand);
\r
2071 switch(operand->getQualifier())
\r
2073 case EvqTemporary: return temporaryRegister(operand);
\r
2074 case EvqGlobal: return temporaryRegister(operand);
\r
2075 case EvqConstExpr: UNREACHABLE(EvqConstExpr);
\r
2076 case EvqAttribute: return attributeRegister(operand);
\r
2077 case EvqVaryingIn: return varyingRegister(operand);
\r
2078 case EvqVaryingOut: return varyingRegister(operand);
\r
2079 case EvqVertexIn: return attributeRegister(operand);
\r
2080 case EvqFragmentOut: return 0;
\r
2081 case EvqVertexOut: return varyingRegister(operand);
\r
2082 case EvqFragmentIn: return varyingRegister(operand);
\r
2083 case EvqInvariantVaryingIn: return varyingRegister(operand);
\r
2084 case EvqInvariantVaryingOut: return varyingRegister(operand);
\r
2085 case EvqSmooth: return varyingRegister(operand);
\r
2086 case EvqFlat: return varyingRegister(operand);
\r
2087 case EvqCentroidOut: return varyingRegister(operand);
\r
2088 case EvqSmoothIn: return varyingRegister(operand);
\r
2089 case EvqFlatIn: return varyingRegister(operand);
\r
2090 case EvqCentroidIn: return varyingRegister(operand);
\r
2091 case EvqUniform: return uniformRegister(operand);
\r
2092 case EvqIn: return temporaryRegister(operand);
\r
2093 case EvqOut: return temporaryRegister(operand);
\r
2094 case EvqInOut: return temporaryRegister(operand);
\r
2095 case EvqConstReadOnly: return temporaryRegister(operand);
\r
2096 case EvqPosition: return varyingRegister(operand);
\r
2097 case EvqPointSize: return varyingRegister(operand);
\r
2098 case EvqInstanceID: vertexShader->instanceIdDeclared = true; return 0;
\r
2099 case EvqFragCoord: pixelShader->vPosDeclared = true; return 0;
\r
2100 case EvqFrontFacing: pixelShader->vFaceDeclared = true; return 1;
\r
2101 case EvqPointCoord: return varyingRegister(operand);
\r
2102 case EvqFragColor: return 0;
\r
2103 case EvqFragData: return 0;
\r
2104 default: UNREACHABLE(operand->getQualifier());
\r
2110 int OutputASM::writeMask(TIntermTyped *destination, int index)
\r
2112 if(destination->getQualifier() == EvqPointSize)
\r
2114 return 0x2; // Point size stored in the y component
\r
2117 return 0xF >> (4 - registerSize(destination->getType(), index));
\r
2120 int OutputASM::readSwizzle(TIntermTyped *argument, int size)
\r
2122 if(argument->getQualifier() == EvqPointSize)
\r
2124 return 0x55; // Point size stored in the y component
\r
2127 static const unsigned char swizzleSize[5] = {0x00, 0x00, 0x54, 0xA4, 0xE4}; // (void), xxxx, xyyy, xyzz, xyzw
\r
2129 return swizzleSize[size];
\r
2132 // Conservatively checks whether an expression is fast to compute and has no side effects
\r
2133 bool OutputASM::trivial(TIntermTyped *expression, int budget)
\r
2135 if(!expression->isRegister())
\r
2140 return cost(expression, budget) >= 0;
\r
2143 // Returns the remaining computing budget (if < 0 the expression is too expensive or has side effects)
\r
2144 int OutputASM::cost(TIntermNode *expression, int budget)
\r
2151 if(expression->getAsSymbolNode())
\r
2155 else if(expression->getAsConstantUnion())
\r
2159 else if(expression->getAsBinaryNode())
\r
2161 TIntermBinary *binary = expression->getAsBinaryNode();
\r
2163 switch(binary->getOp())
\r
2165 case EOpVectorSwizzle:
\r
2166 case EOpIndexDirect:
\r
2167 case EOpIndexDirectStruct:
\r
2168 case EOpIndexDirectInterfaceBlock:
\r
2169 return cost(binary->getLeft(), budget - 0);
\r
2173 return cost(binary->getLeft(), cost(binary->getRight(), budget - 1));
\r
2178 else if(expression->getAsUnaryNode())
\r
2180 TIntermUnary *unary = expression->getAsUnaryNode();
\r
2182 switch(unary->getOp())
\r
2186 return cost(unary->getOperand(), budget - 1);
\r
2191 else if(expression->getAsSelectionNode())
\r
2193 TIntermSelection *selection = expression->getAsSelectionNode();
\r
2195 if(selection->usesTernaryOperator())
\r
2197 TIntermTyped *condition = selection->getCondition();
\r
2198 TIntermNode *trueBlock = selection->getTrueBlock();
\r
2199 TIntermNode *falseBlock = selection->getFalseBlock();
\r
2200 TIntermConstantUnion *constantCondition = condition->getAsConstantUnion();
\r
2202 if(constantCondition)
\r
2204 bool trueCondition = constantCondition->getUnionArrayPointer()->getBConst();
\r
2208 return cost(trueBlock, budget - 0);
\r
2212 return cost(falseBlock, budget - 0);
\r
2217 return cost(trueBlock, cost(falseBlock, budget - 2));
\r
2225 const Function *OutputASM::findFunction(const TString &name)
\r
2227 for(unsigned int f = 0; f < functionArray.size(); f++)
\r
2229 if(functionArray[f].name == name)
\r
2231 return &functionArray[f];
\r
2238 int OutputASM::temporaryRegister(TIntermTyped *temporary)
\r
2240 return allocate(temporaries, temporary);
\r
2243 int OutputASM::varyingRegister(TIntermTyped *varying)
\r
2245 int var = lookup(varyings, varying);
\r
2249 var = allocate(varyings, varying);
\r
2250 int componentCount = varying->registerSize();
\r
2251 int registerCount = varying->totalRegisterCount();
\r
2255 if((var + registerCount) > sw::PixelShader::MAX_INPUT_VARYINGS)
\r
2257 mContext.error(varying->getLine(), "Varyings packing failed: Too many varyings", "fragment shader");
\r
2261 if(varying->getQualifier() == EvqPointCoord)
\r
2263 ASSERT(varying->isRegister());
\r
2264 if(componentCount >= 1) pixelShader->semantic[var][0] = sw::Shader::Semantic(sw::Shader::USAGE_TEXCOORD, var);
\r
2265 if(componentCount >= 2) pixelShader->semantic[var][1] = sw::Shader::Semantic(sw::Shader::USAGE_TEXCOORD, var);
\r
2266 if(componentCount >= 3) pixelShader->semantic[var][2] = sw::Shader::Semantic(sw::Shader::USAGE_TEXCOORD, var);
\r
2267 if(componentCount >= 4) pixelShader->semantic[var][3] = sw::Shader::Semantic(sw::Shader::USAGE_TEXCOORD, var);
\r
2271 for(int i = 0; i < varying->totalRegisterCount(); i++)
\r
2273 if(componentCount >= 1) pixelShader->semantic[var + i][0] = sw::Shader::Semantic(sw::Shader::USAGE_COLOR, var + i);
\r
2274 if(componentCount >= 2) pixelShader->semantic[var + i][1] = sw::Shader::Semantic(sw::Shader::USAGE_COLOR, var + i);
\r
2275 if(componentCount >= 3) pixelShader->semantic[var + i][2] = sw::Shader::Semantic(sw::Shader::USAGE_COLOR, var + i);
\r
2276 if(componentCount >= 4) pixelShader->semantic[var + i][3] = sw::Shader::Semantic(sw::Shader::USAGE_COLOR, var + i);
\r
2280 else if(vertexShader)
\r
2282 if((var + registerCount) > sw::VertexShader::MAX_OUTPUT_VARYINGS)
\r
2284 mContext.error(varying->getLine(), "Varyings packing failed: Too many varyings", "vertex shader");
\r
2288 if(varying->getQualifier() == EvqPosition)
\r
2290 ASSERT(varying->isRegister());
\r
2291 vertexShader->output[var][0] = sw::Shader::Semantic(sw::Shader::USAGE_POSITION, 0);
\r
2292 vertexShader->output[var][1] = sw::Shader::Semantic(sw::Shader::USAGE_POSITION, 0);
\r
2293 vertexShader->output[var][2] = sw::Shader::Semantic(sw::Shader::USAGE_POSITION, 0);
\r
2294 vertexShader->output[var][3] = sw::Shader::Semantic(sw::Shader::USAGE_POSITION, 0);
\r
2295 vertexShader->positionRegister = var;
\r
2297 else if(varying->getQualifier() == EvqPointSize)
\r
2299 ASSERT(varying->isRegister());
\r
2300 vertexShader->output[var][0] = sw::Shader::Semantic(sw::Shader::USAGE_PSIZE, 0);
\r
2301 vertexShader->output[var][1] = sw::Shader::Semantic(sw::Shader::USAGE_PSIZE, 0);
\r
2302 vertexShader->output[var][2] = sw::Shader::Semantic(sw::Shader::USAGE_PSIZE, 0);
\r
2303 vertexShader->output[var][3] = sw::Shader::Semantic(sw::Shader::USAGE_PSIZE, 0);
\r
2304 vertexShader->pointSizeRegister = var;
\r
2308 // Semantic indexes for user varyings will be assigned during program link to match the pixel shader
\r
2311 else UNREACHABLE(0);
\r
2313 declareVarying(varying, var);
\r
2319 void OutputASM::declareVarying(TIntermTyped *varying, int reg)
\r
2321 if(varying->getQualifier() != EvqPointCoord) // gl_PointCoord does not need linking
\r
2323 const TType &type = varying->getType();
\r
2324 const char *name = varying->getAsSymbolNode()->getSymbol().c_str();
\r
2325 VaryingList &activeVaryings = shaderObject->varyings;
\r
2327 // Check if this varying has been declared before without having a register assigned
\r
2328 for(VaryingList::iterator v = activeVaryings.begin(); v != activeVaryings.end(); v++)
\r
2330 if(v->name == name)
\r
2334 ASSERT(v->reg < 0 || v->reg == reg);
\r
2342 activeVaryings.push_back(glsl::Varying(glVariableType(type), name, varying->getArraySize(), reg, 0));
\r
2346 int OutputASM::uniformRegister(TIntermTyped *uniform)
\r
2348 const TType &type = uniform->getType();
\r
2349 ASSERT(!IsSampler(type.getBasicType()));
\r
2350 TInterfaceBlock *block = type.getAsInterfaceBlock();
\r
2351 TIntermSymbol *symbol = uniform->getAsSymbolNode();
\r
2352 ASSERT(symbol || block);
\r
2354 if(symbol || block)
\r
2356 int index = lookup(uniforms, uniform);
\r
2360 index = allocate(uniforms, uniform);
\r
2361 const TString &name = symbol ? symbol->getSymbol() : block->name();
\r
2363 declareUniform(type, name, index);
\r
2372 int OutputASM::attributeRegister(TIntermTyped *attribute)
\r
2374 ASSERT(!attribute->isArray());
\r
2376 int index = lookup(attributes, attribute);
\r
2380 TIntermSymbol *symbol = attribute->getAsSymbolNode();
\r
2385 index = allocate(attributes, attribute);
\r
2386 const TType &type = attribute->getType();
\r
2387 int registerCount = attribute->totalRegisterCount();
\r
2389 if(vertexShader && (index + registerCount) <= sw::VertexShader::MAX_INPUT_ATTRIBUTES)
\r
2391 for(int i = 0; i < registerCount; i++)
\r
2393 vertexShader->input[index + i] = sw::Shader::Semantic(sw::Shader::USAGE_TEXCOORD, index + i);
\r
2397 ActiveAttributes &activeAttributes = shaderObject->activeAttributes;
\r
2399 const char *name = symbol->getSymbol().c_str();
\r
2400 activeAttributes.push_back(Attribute(glVariableType(type), name, type.getArraySize(), type.getLayoutQualifier().location, index));
\r
2407 int OutputASM::samplerRegister(TIntermTyped *sampler)
\r
2409 ASSERT(IsSampler(sampler->getType().getBasicType()));
\r
2410 TIntermSymbol *symbol = sampler->getAsSymbolNode();
\r
2411 TIntermBinary *binary = sampler->getAsBinaryNode();
\r
2415 return samplerRegister(symbol);
\r
2419 ASSERT(binary->getOp() == EOpIndexDirect || binary->getOp() == EOpIndexIndirect ||
\r
2420 binary->getOp() == EOpIndexDirectStruct || binary->getOp() == EOpIndexDirectInterfaceBlock);
\r
2422 return samplerRegister(binary->getLeft()); // Index added later
\r
2424 else UNREACHABLE(0);
\r
2429 int OutputASM::samplerRegister(TIntermSymbol *sampler)
\r
2431 const TType &type = sampler->getType();
\r
2432 ASSERT(IsSampler(type.getBasicType()) || type.getStruct()); // Structures can contain samplers
\r
2434 int index = lookup(samplers, sampler);
\r
2438 index = allocate(samplers, sampler);
\r
2440 if(sampler->getQualifier() == EvqUniform)
\r
2442 const char *name = sampler->getSymbol().c_str();
\r
2443 declareUniform(type, name, index);
\r
2450 int OutputASM::lookup(VariableArray &list, TIntermTyped *variable)
\r
2452 for(unsigned int i = 0; i < list.size(); i++)
\r
2454 if(list[i] == variable)
\r
2456 return i; // Pointer match
\r
2460 TIntermSymbol *varSymbol = variable->getAsSymbolNode();
\r
2461 TInterfaceBlock *varBlock = variable->getType().getAsInterfaceBlock();
\r
2465 for(unsigned int i = 0; i < list.size(); i++)
\r
2469 TIntermSymbol *listSymbol = list[i]->getAsSymbolNode();
\r
2473 if(listSymbol->getId() == varSymbol->getId())
\r
2475 ASSERT(listSymbol->getSymbol() == varSymbol->getSymbol());
\r
2476 ASSERT(listSymbol->getType() == varSymbol->getType());
\r
2477 ASSERT(listSymbol->getQualifier() == varSymbol->getQualifier());
\r
2487 for(unsigned int i = 0; i < list.size(); i++)
\r
2491 TInterfaceBlock *listBlock = list[i]->getType().getAsInterfaceBlock();
\r
2495 if(listBlock->name() == varBlock->name())
\r
2497 ASSERT(listBlock->arraySize() == varBlock->arraySize());
\r
2498 ASSERT(listBlock->fields() == varBlock->fields());
\r
2499 ASSERT(listBlock->blockStorage() == varBlock->blockStorage());
\r
2500 ASSERT(listBlock->matrixPacking() == varBlock->matrixPacking());
\r
2512 int OutputASM::allocate(VariableArray &list, TIntermTyped *variable)
\r
2514 int index = lookup(list, variable);
\r
2518 unsigned int registerCount = variable->totalRegisterCount();
\r
2520 for(unsigned int i = 0; i < list.size(); i++)
\r
2524 unsigned int j = 1;
\r
2525 for( ; j < registerCount && (i + j) < list.size(); j++)
\r
2527 if(list[i + j] != 0)
\r
2533 if(j == registerCount) // Found free slots
\r
2535 for(unsigned int j = 0; j < registerCount; j++)
\r
2537 list[i + j] = variable;
\r
2545 index = list.size();
\r
2547 for(unsigned int i = 0; i < registerCount; i++)
\r
2549 list.push_back(variable);
\r
2556 void OutputASM::free(VariableArray &list, TIntermTyped *variable)
\r
2558 int index = lookup(list, variable);
\r
2566 void OutputASM::declareUniform(const TType &type, const TString &name, int registerIndex, int offset, int blockId)
\r
2568 const TStructure *structure = type.getStruct();
\r
2569 const TInterfaceBlock *block = (type.isInterfaceBlock() || (blockId == -1)) ? type.getInterfaceBlock() : nullptr;
\r
2570 ActiveUniforms &activeUniforms = shaderObject->activeUniforms;
\r
2574 ActiveUniformBlocks &activeUniformBlocks = shaderObject->activeUniformBlocks;
\r
2575 blockId = activeUniformBlocks.size();
\r
2576 unsigned int dataSize = block->objectSize() * 4; // FIXME: assuming 4 bytes per element
\r
2577 activeUniformBlocks.push_back(UniformBlock(block->name().c_str(), block->hasInstanceName() ? block->instanceName().c_str() : std::string(), dataSize,
\r
2578 block->arraySize(), block->blockStorage(), block->matrixPacking() == EmpRowMajor, registerIndex, blockId));
\r
2581 if(!structure && !block)
\r
2585 shaderObject->activeUniformBlocks[blockId].fields.push_back(activeUniforms.size());
\r
2587 activeUniforms.push_back(Uniform(glVariableType(type), glVariablePrecision(type), name.c_str(), type.getArraySize(), registerIndex, offset, blockId));
\r
2589 if(isSamplerRegister(type))
\r
2591 for(int i = 0; i < type.totalRegisterCount(); i++)
\r
2593 shader->declareSampler(registerIndex + i);
\r
2599 const TFieldList& fields = structure ? structure->fields() : block->fields();
\r
2600 const bool containerHasName = structure || block->hasInstanceName();
\r
2601 const TString &containerName = structure ? name : (containerHasName ? block->instanceName() : TString());
\r
2602 if(type.isArray() && (structure || type.isInterfaceBlock()))
\r
2604 int fieldRegisterIndex = (blockId == -1) ? registerIndex : 0;
\r
2605 int fieldOffset = 0;
\r
2607 for(int i = 0; i < type.getArraySize(); i++)
\r
2609 for(size_t j = 0; j < fields.size(); j++)
\r
2611 const TType &fieldType = *(fields[j]->type());
\r
2612 const TString &fieldName = fields[j]->name();
\r
2614 const TString uniformName = containerHasName ? containerName + "[" + str(i) + "]." + fieldName : fieldName;
\r
2615 declareUniform(fieldType, uniformName, fieldRegisterIndex, fieldOffset, blockId);
\r
2616 int registerCount = fieldType.totalRegisterCount();
\r
2617 fieldRegisterIndex += registerCount;
\r
2618 fieldOffset += registerCount * fieldType.registerSize();
\r
2624 int fieldRegisterIndex = (blockId == -1) ? registerIndex : 0;
\r
2625 int fieldOffset = 0;
\r
2627 for(size_t i = 0; i < fields.size(); i++)
\r
2629 const TType &fieldType = *(fields[i]->type());
\r
2630 const TString &fieldName = fields[i]->name();
\r
2632 const TString uniformName = containerHasName ? containerName + "." + fieldName : fieldName;
\r
2633 declareUniform(fieldType, uniformName, fieldRegisterIndex, fieldOffset, blockId);
\r
2634 int registerCount = fieldType.totalRegisterCount();
\r
2635 fieldRegisterIndex += registerCount;
\r
2636 fieldOffset += registerCount * fieldType.registerSize();
\r
2642 GLenum OutputASM::glVariableType(const TType &type)
\r
2644 switch(type.getBasicType())
\r
2647 if(type.isScalar())
\r
2651 else if(type.isVector())
\r
2653 switch(type.getNominalSize())
\r
2655 case 2: return GL_FLOAT_VEC2;
\r
2656 case 3: return GL_FLOAT_VEC3;
\r
2657 case 4: return GL_FLOAT_VEC4;
\r
2658 default: UNREACHABLE(type.getNominalSize());
\r
2661 else if(type.isMatrix())
\r
2663 switch(type.getNominalSize())
\r
2666 switch(type.getSecondarySize())
\r
2668 case 2: return GL_FLOAT_MAT2;
\r
2669 case 3: return GL_FLOAT_MAT2x3;
\r
2670 case 4: return GL_FLOAT_MAT2x4;
\r
2671 default: UNREACHABLE(type.getSecondarySize());
\r
2674 switch(type.getSecondarySize())
\r
2676 case 2: return GL_FLOAT_MAT3x2;
\r
2677 case 3: return GL_FLOAT_MAT3;
\r
2678 case 4: return GL_FLOAT_MAT3x4;
\r
2679 default: UNREACHABLE(type.getSecondarySize());
\r
2682 switch(type.getSecondarySize())
\r
2684 case 2: return GL_FLOAT_MAT4x2;
\r
2685 case 3: return GL_FLOAT_MAT4x3;
\r
2686 case 4: return GL_FLOAT_MAT4;
\r
2687 default: UNREACHABLE(type.getSecondarySize());
\r
2689 default: UNREACHABLE(type.getNominalSize());
\r
2692 else UNREACHABLE(0);
\r
2695 if(type.isScalar())
\r
2699 else if(type.isVector())
\r
2701 switch(type.getNominalSize())
\r
2703 case 2: return GL_INT_VEC2;
\r
2704 case 3: return GL_INT_VEC3;
\r
2705 case 4: return GL_INT_VEC4;
\r
2706 default: UNREACHABLE(type.getNominalSize());
\r
2709 else UNREACHABLE(0);
\r
2712 if(type.isScalar())
\r
2714 return GL_UNSIGNED_INT;
\r
2716 else if(type.isVector())
\r
2718 switch(type.getNominalSize())
\r
2720 case 2: return GL_UNSIGNED_INT_VEC2;
\r
2721 case 3: return GL_UNSIGNED_INT_VEC3;
\r
2722 case 4: return GL_UNSIGNED_INT_VEC4;
\r
2723 default: UNREACHABLE(type.getNominalSize());
\r
2726 else UNREACHABLE(0);
\r
2729 if(type.isScalar())
\r
2733 else if(type.isVector())
\r
2735 switch(type.getNominalSize())
\r
2737 case 2: return GL_BOOL_VEC2;
\r
2738 case 3: return GL_BOOL_VEC3;
\r
2739 case 4: return GL_BOOL_VEC4;
\r
2740 default: UNREACHABLE(type.getNominalSize());
\r
2743 else UNREACHABLE(0);
\r
2745 case EbtSampler2D:
\r
2746 return GL_SAMPLER_2D;
\r
2747 case EbtISampler2D:
\r
2748 return GL_INT_SAMPLER_2D;
\r
2749 case EbtUSampler2D:
\r
2750 return GL_UNSIGNED_INT_SAMPLER_2D;
\r
2751 case EbtSamplerCube:
\r
2752 return GL_SAMPLER_CUBE;
\r
2753 case EbtISamplerCube:
\r
2754 return GL_INT_SAMPLER_CUBE;
\r
2755 case EbtUSamplerCube:
\r
2756 return GL_UNSIGNED_INT_SAMPLER_CUBE;
\r
2757 case EbtSamplerExternalOES:
\r
2758 return GL_SAMPLER_EXTERNAL_OES;
\r
2759 case EbtSampler3D:
\r
2760 return GL_SAMPLER_3D_OES;
\r
2761 case EbtISampler3D:
\r
2762 return GL_INT_SAMPLER_3D;
\r
2763 case EbtUSampler3D:
\r
2764 return GL_UNSIGNED_INT_SAMPLER_3D;
\r
2765 case EbtSampler2DArray:
\r
2766 return GL_SAMPLER_2D_ARRAY;
\r
2767 case EbtISampler2DArray:
\r
2768 return GL_INT_SAMPLER_2D_ARRAY;
\r
2769 case EbtUSampler2DArray:
\r
2770 return GL_UNSIGNED_INT_SAMPLER_2D_ARRAY;
\r
2771 case EbtSampler2DShadow:
\r
2772 return GL_SAMPLER_2D_SHADOW;
\r
2773 case EbtSamplerCubeShadow:
\r
2774 return GL_SAMPLER_CUBE_SHADOW;
\r
2775 case EbtSampler2DArrayShadow:
\r
2776 return GL_SAMPLER_2D_ARRAY_SHADOW;
\r
2778 UNREACHABLE(type.getBasicType());
\r
2785 GLenum OutputASM::glVariablePrecision(const TType &type)
\r
2787 if(type.getBasicType() == EbtFloat)
\r
2789 switch(type.getPrecision())
\r
2791 case EbpHigh: return GL_HIGH_FLOAT;
\r
2792 case EbpMedium: return GL_MEDIUM_FLOAT;
\r
2793 case EbpLow: return GL_LOW_FLOAT;
\r
2794 case EbpUndefined:
\r
2795 // Should be defined as the default precision by the parser
\r
2796 default: UNREACHABLE(type.getPrecision());
\r
2799 else if(type.getBasicType() == EbtInt)
\r
2801 switch(type.getPrecision())
\r
2803 case EbpHigh: return GL_HIGH_INT;
\r
2804 case EbpMedium: return GL_MEDIUM_INT;
\r
2805 case EbpLow: return GL_LOW_INT;
\r
2806 case EbpUndefined:
\r
2807 // Should be defined as the default precision by the parser
\r
2808 default: UNREACHABLE(type.getPrecision());
\r
2812 // Other types (boolean, sampler) don't have a precision
\r
2816 int OutputASM::dim(TIntermNode *v)
\r
2818 TIntermTyped *vector = v->getAsTyped();
\r
2819 ASSERT(vector && vector->isRegister());
\r
2820 return vector->getNominalSize();
\r
2823 int OutputASM::dim2(TIntermNode *m)
\r
2825 TIntermTyped *matrix = m->getAsTyped();
\r
2826 ASSERT(matrix && matrix->isMatrix() && !matrix->isArray());
\r
2827 return matrix->getSecondarySize();
\r
2830 // Returns ~0 if no loop count could be determined
\r
2831 unsigned int OutputASM::loopCount(TIntermLoop *node)
\r
2833 // Parse loops of the form:
\r
2834 // for(int index = initial; index [comparator] limit; index += increment)
\r
2835 TIntermSymbol *index = 0;
\r
2836 TOperator comparator = EOpNull;
\r
2839 int increment = 0;
\r
2841 // Parse index name and intial value
\r
2842 if(node->getInit())
\r
2844 TIntermAggregate *init = node->getInit()->getAsAggregate();
\r
2848 TIntermSequence &sequence = init->getSequence();
\r
2849 TIntermTyped *variable = sequence[0]->getAsTyped();
\r
2851 if(variable && variable->getQualifier() == EvqTemporary)
\r
2853 TIntermBinary *assign = variable->getAsBinaryNode();
\r
2855 if(assign->getOp() == EOpInitialize)
\r
2857 TIntermSymbol *symbol = assign->getLeft()->getAsSymbolNode();
\r
2858 TIntermConstantUnion *constant = assign->getRight()->getAsConstantUnion();
\r
2860 if(symbol && constant)
\r
2862 if(constant->getBasicType() == EbtInt && constant->getNominalSize() == 1)
\r
2865 initial = constant->getUnionArrayPointer()[0].getIConst();
\r
2873 // Parse comparator and limit value
\r
2874 if(index && node->getCondition())
\r
2876 TIntermBinary *test = node->getCondition()->getAsBinaryNode();
\r
2878 if(test && test->getLeft()->getAsSymbolNode()->getId() == index->getId())
\r
2880 TIntermConstantUnion *constant = test->getRight()->getAsConstantUnion();
\r
2884 if(constant->getBasicType() == EbtInt && constant->getNominalSize() == 1)
\r
2886 comparator = test->getOp();
\r
2887 limit = constant->getUnionArrayPointer()[0].getIConst();
\r
2893 // Parse increment
\r
2894 if(index && comparator != EOpNull && node->getExpression())
\r
2896 TIntermBinary *binaryTerminal = node->getExpression()->getAsBinaryNode();
\r
2897 TIntermUnary *unaryTerminal = node->getExpression()->getAsUnaryNode();
\r
2899 if(binaryTerminal)
\r
2901 TOperator op = binaryTerminal->getOp();
\r
2902 TIntermConstantUnion *constant = binaryTerminal->getRight()->getAsConstantUnion();
\r
2906 if(constant->getBasicType() == EbtInt && constant->getNominalSize() == 1)
\r
2908 int value = constant->getUnionArrayPointer()[0].getIConst();
\r
2912 case EOpAddAssign: increment = value; break;
\r
2913 case EOpSubAssign: increment = -value; break;
\r
2914 default: UNIMPLEMENTED();
\r
2919 else if(unaryTerminal)
\r
2921 TOperator op = unaryTerminal->getOp();
\r
2925 case EOpPostIncrement: increment = 1; break;
\r
2926 case EOpPostDecrement: increment = -1; break;
\r
2927 case EOpPreIncrement: increment = 1; break;
\r
2928 case EOpPreDecrement: increment = -1; break;
\r
2929 default: UNIMPLEMENTED();
\r
2934 if(index && comparator != EOpNull && increment != 0)
\r
2936 if(comparator == EOpLessThanEqual)
\r
2938 comparator = EOpLessThan;
\r
2942 if(comparator == EOpLessThan)
\r
2944 int iterations = (limit - initial) / increment;
\r
2946 if(iterations <= 0)
\r
2951 return iterations;
\r
2953 else UNIMPLEMENTED(); // Falls through
\r
2959 bool DetectLoopDiscontinuity::traverse(TIntermNode *node)
\r
2962 loopDiscontinuity = false;
\r
2964 node->traverse(this);
\r
2966 return loopDiscontinuity;
\r
2969 bool DetectLoopDiscontinuity::visitLoop(Visit visit, TIntermLoop *loop)
\r
2971 if(visit == PreVisit)
\r
2975 else if(visit == PostVisit)
\r
2983 bool DetectLoopDiscontinuity::visitBranch(Visit visit, TIntermBranch *node)
\r
2985 if(loopDiscontinuity)
\r
2995 switch(node->getFlowOp())
\r
3002 loopDiscontinuity = true;
\r
3004 default: UNREACHABLE(node->getFlowOp());
\r
3007 return !loopDiscontinuity;
\r
3010 bool DetectLoopDiscontinuity::visitAggregate(Visit visit, TIntermAggregate *node)
\r
3012 return !loopDiscontinuity;
\r
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