workaround for division by zero on fog calculation

2013-02-07 02:21:30 +01:00 · 2013-02-07 02:21:30 +01:00 · dae1226e1b
parent e7a8d3f854
commit dae1226e1b
1 changed files with 2 additions and 0 deletions
--- a/Source/Core/VideoCommon/Src/PixelShaderGen.cpp
+++ b/Source/Core/VideoCommon/Src/PixelShaderGen.cpp
@ -1322,6 +1322,8 @@ static void WriteFog(char *&p)
 		// perspective
 		// ze = A/(B - (Zs >> B_SHF)
 		WRITE (p, "\tfloat ze = " I_FOG"[1].x / (" I_FOG"[1].y - (zCoord / " I_FOG"[1].w));\n");
+		WRITE (p, "\tif(isnan(ze))\n"); // TODO: on intel/mesa, here will be a division by zero
+		WRITE (p, "\t\tze = 0.0f;\n");
 	}
 	else
 	{