Since 310.14 some WebGL demos are badly rendered.
Look at these :
http://glsl.heroku.com/e#4156.1
http://glsl.heroku.com/e#4169.1
http://glsl.heroku.com/e#4685.0
It looks like a bug in the shader. In http://glsl.heroku.com/e#4169.1 insert gl_FragColor=vec4(0.0); at line 33 and it renders fine.
see page 65 in http://www.khronos.org/files/opengles_shading_language.pdf
Thanx for your response, but I’m not asking for a sahder fix.
I’m only reporting that this worked with previous drivers and works with fglrx on the netbook i’m writing this reply from (and probably with other configurations), and doesn’t work any more with 310.14 (at least on my computer).
It’s perfectly plausible that these shaders aren’t spec compliant, but since it used to work and still works on other GL implemantations, i’m afraid this could now be a de facto standard practice.