offset triangle in GLSL
with fixed offset, set in GLSL
pass offset to GLSL as uniform
Merge branch 'glTriangleGLSLTranslatedWithUniform' into glTriangleGLSLTranslatedWithUniformChangingOverTime
chnage the local variables over time, and update the GLSL variables from them
Merge branch 'glTriangleGLSLTranslatedWithUniformChangingOverTime'