Talk:GLSL Programming/GLUT/Two-Sided Surfaces

= Bug in Mesa 7.10.3 =

There was a bug in my Mesa/Radeon 7.10.3 environment, where backColor replaced frontColor when 2 varyings and gl_FrontFacing were used in a fragment shader. It was fixed in Mesa 7.11. Beuc (discuss • contribs) 07:31, 8 September 2011 (UTC)

= Bug in windows? =

When testing on windows XP + Radeon 9600 + latest drivers, I got the following link error: glLinkProgram:Fragment shader(s) failed to link, vertex shader(s) linked. Fragment Shader not supported by HW

Apparently this appears as soon as I use. Radeon supports OpenGL 2.1 though... Beuc (discuss • contribs) 20:44, 12 September 2011 (UTC)