commit dd4c8631343f8df63375a3b6d09998c0ff65bd62
author Nicolas Capens <capn@google.com> Tue Jul 31 15:33:28 2018 -0400
committer Nicolas Capens <nicolascapens@google.com> Thu Aug 02 14:36:02 2018 +0000
tree 5455542ff0a23d9087619f36e302a3e7f07f3097
parent 9e22c542d6be9bdc4066a224264b9d3a1fb73018

Fix gl_FrontFacing to take GL_FRONT_FACE into account.

Bug swiftshader:113

Change-Id: Ia1cbcdbb396eaabaa79e4c8651d7c025f73d028a
Reviewed-on: https://swiftshader-review.googlesource.com/20068
Reviewed-by: Alexis Hétu <sugoi@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>

src/OpenGL/libGLES_CM/Context.cpp

diff --git a/src/OpenGL/libGLES_CM/Context.cpp b/src/OpenGL/libGLES_CM/Context.cpp
index 28b0592..811234e 100644
--- a/src/OpenGL/libGLES_CM/Context.cpp
+++ b/src/OpenGL/libGLES_CM/Context.cpp
@@ -1781,14 +1781,15 @@
 void Context::applyState(GLenum drawMode)
 {
 	Framebuffer *framebuffer = getFramebuffer();
+	bool frontFaceCCW = (mState.frontFace == GL_CCW);
 
 	if(mState.cullFaceEnabled)
 	{
-		device->setCullMode(es2sw::ConvertCullMode(mState.cullMode, mState.frontFace));
+		device->setCullMode(es2sw::ConvertCullMode(mState.cullMode, mState.frontFace), frontFaceCCW);
 	}
 	else
 	{
-		device->setCullMode(sw::CULL_NONE);
+		device->setCullMode(sw::CULL_NONE, frontFaceCCW);
 	}
 
 	if(mDepthStateDirty)