KhronosGroup/WebGL — pull request #54 by kenrussell (2012-10-11 19:37:54+00:00)
Title: glsl-function-smoothstep-float should use high precision for OpenGL ES

http://www.khronos.org/bugzilla/show_bug.cgi?id=728

Converted test to use JavaScript-based reference image generation in
order to avoid needing to add highp to the reference shaders.