mewin/glslang
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Merge pull request #2544 from ZhiqianXia/master

Browse Source 
Replace log2 and exp2 math func.
This commit is contained in:
greg-lunarg
2021-02-25 10:38:39 -07:00
committed by GitHub
parent 00c6d2d4a7 47a21828bd
commit 51d672b8a8
1 changed files with 4 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
glslang/MachineIndependent/Constant.cpp
View File

@@ -599,17 +599,11 @@ TIntermTyped* TIntermConstantUnion::fold(TOperator op, const TType& returnType)
newConstArray[i].setDConst(log(unionArray[i].getDConst()));
break;
case EOpExp2:
{
const double inv_log2_e = 0.69314718055994530941723212145818;
newConstArray[i].setDConst(exp(unionArray[i].getDConst() * inv_log2_e));
break;
}
newConstArray[i].setDConst(exp2(unionArray[i].getDConst()));
break;
case EOpLog2:
{
const double log2_e = 1.4426950408889634073599246810019;
newConstArray[i].setDConst(log2_e * log(unionArray[i].getDConst()));
break;
}
newConstArray[i].setDConst(log2(unionArray[i].getDConst()));
break;
case EOpSqrt:
newConstArray[i].setDConst(sqrt(unionArray[i].getDConst()));
break;