Use SV_IsFrontFace to implement gl_FrontFacing on DX11.
TRAC #22426
Signed-off-by: Jamie Madill
Signed-off-by: Daniel Koch
Author: Nicolas Capens
git-svn-id: https://angleproject.googlecode.com/svn/branches/dx11proto@1752 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/libGLESv2/ProgramBinary.cpp b/src/libGLESv2/ProgramBinary.cpp
index 6e5cd9e..10b57f3 100644
--- a/src/libGLESv2/ProgramBinary.cpp
+++ b/src/libGLESv2/ProgramBinary.cpp
@@ -1416,20 +1416,24 @@
pixelHLSL += " float2 gl_PointCoord : TEXCOORD0;\n";
}
+ pixelHLSL += "};\n"
+ "\n"
+ "struct PS_OUTPUT\n"
+ "{\n"
+ " float4 gl_Color[1] : " + targetSemantic + ";\n"
+ "};\n"
+ "\n";
+
if (fragmentShader->mUsesFrontFacing)
{
- pixelHLSL += " float vFace : VFACE;\n";
+ pixelHLSL += "PS_OUTPUT main(PS_INPUT input, bool isFrontFace : SV_IsFrontFace)\n"
+ "{\n";
}
-
- pixelHLSL += "};\n"
- "\n"
- "struct PS_OUTPUT\n"
- "{\n"
- " float4 gl_Color[1] : " + targetSemantic + ";\n"
- "};\n"
- "\n"
- "PS_OUTPUT main(PS_INPUT input)\n"
- "{\n";
+ else
+ {
+ pixelHLSL += "PS_OUTPUT main(PS_INPUT input)\n"
+ "{\n";
+ }
if (fragmentShader->mUsesFragCoord)
{
@@ -1464,7 +1468,14 @@
if (fragmentShader->mUsesFrontFacing)
{
- pixelHLSL += " gl_FrontFacing = (input.vFace * dx_DepthFront.z >= 0.0);\n";
+ if (shaderModel <= 3)
+ {
+ pixelHLSL += " gl_FrontFacing = (vFace * dx_DepthFront.z >= 0.0);\n";
+ }
+ else
+ {
+ pixelHLSL += " gl_FrontFacing = isFrontFace;\n";
+ }
}
for (VaryingList::iterator varying = fragmentShader->mVaryings.begin(); varying != fragmentShader->mVaryings.end(); varying++)
