You're right. The browser should just expose this capability and get it right. Recently I've learned that even the parts of OpenGL which are fully specified gi

You're right. The browser should just expose this capability and get it right. Recently I've learned that even the parts of OpenGL which are fully specified give wrong results on ubiquitous hardware+driver combos at the pixel level. The commonly proposed solution is "instead of using the transforms and blending exposed by OpenGL, do it correctly yourself in a shader." Gosh.