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rsx/common/d3d12/gl: Fix lit and rsq behavior near 0 in vertex shaders.

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This commit is contained in:
Vincent Lejeune 2016-01-31 20:01:00 +01:00
parent 2ead9b1f21
commit 1f7a1e4078
10 changed files with 85 additions and 37 deletions
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17
rpcs3/Emu/RSX/GL/GLFragmentProgram.cpp
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@ -101,22 +101,7 @@ void GLFragmentDecompilerThread::insertConstants(std::stringstream & OS)
void GLFragmentDecompilerThread::insertMainStart(std::stringstream & OS)
{
// "lib" function
// 0.00001 is used as "some non zero very little number"
OS << "vec4 divsq_legacy(vec4 num, vec4 denum)\n";
OS << "{\n";
OS << " return num / sqrt(max(denum.xxxx, 0.00001));\n";
OS << "}\n";
OS << "vec4 rcp_legacy(vec4 denum)\n";
OS << "{\n";
OS << " return 1. / denum;\n";
OS << "}\n";
OS << "vec4 rsq_legacy(vec4 denum)\n";
OS << "{\n";
OS << " return 1. / sqrt(max(denum, 0.00001));\n";
OS << "}\n";
insert_glsl_legacy_function(OS);
OS << "void main ()" << std::endl;
OS << "{" << std::endl;