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-rw-r--r--Source/Core/VideoCommon/VertexShaderGen.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/Source/Core/VideoCommon/VertexShaderGen.cpp b/Source/Core/VideoCommon/VertexShaderGen.cpp
index ad99b445c0..9518aa9dbf 100644
--- a/Source/Core/VideoCommon/VertexShaderGen.cpp
+++ b/Source/Core/VideoCommon/VertexShaderGen.cpp
@@ -333,7 +333,7 @@ static T GenerateVertexShader(API_TYPE api_type)
else // OGL
{
// this results in a scale from -1..0 to -1..1 after perspective
- // divide
+ // divide, but introduces a floating point round-trip error.
out.Write("o.pos.z = o.pos.z * -2.0 - o.pos.w;\n");
// the next steps of the OGL pipeline are: