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Merge pull request #2028 from ShchchowAMD/constant_expressions_array_mod

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GLSL: Support constant folding for mod
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John Kessenich 2020-02-06 02:56:37 -07:00 • committed by GitHub
commit 2d70e98dea
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3 changed files with 23 additions and 12 deletions
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10
glslang/MachineIndependent/Constant.cpp
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@ -1012,6 +1012,7 @@ TIntermTyped* TIntermediate::fold(TIntermAggregate* aggrNode)
case EOpMin:
case EOpMax:
case EOpMix:
case EOpMod:
case EOpClamp:
case EOpLessThan:
case EOpGreaterThan:
@ -1074,6 +1075,15 @@ TIntermTyped* TIntermediate::fold(TIntermAggregate* aggrNode)
case EOpPow:
newConstArray[comp].setDConst(pow(childConstUnions[0][arg0comp].getDConst(), childConstUnions[1][arg1comp].getDConst()));
break;
case EOpMod:
{
double arg0 = childConstUnions[0][arg0comp].getDConst();
double arg1 = childConstUnions[1][arg1comp].getDConst();
assert(arg1 != 0.0);
double result = arg0 - arg1 * floor(arg0 / arg1);
newConstArray[comp].setDConst(result);
break;
}
case EOpMin:
switch(children[0]->getAsTyped()->getBasicType()) {
case EbtFloat16: