fixing grid example
fixing grid example

patriciogonzalezvivo/glslViewer,maxrelax/glslViewer,kevindeland/glslViewer,jjhoughton/glslViewer,dorald/glslViewer,jjhoughton/glslViewer,kevindeland/glslViewer,dorald/glslViewer,jjhoughton/glslViewer,maxrelax/glslViewer,patriciogonzalezvivo/glslViewer