On 29 June 2012 03:08, Jonathan Hartley <[email protected]> wrote:
> I was envisioning naively grabbing the screen buffer, and testing for
> approximate colored pixels. I can see that anti-aliasing will result in many
> unexpected colors being present, which I could believe aren't tightly
> controlled by the specification, but I am surprised to hear that it's not
> easy to reproducibly control the color of unaliased drawing.
Most of the image-based tests would involve texturing or blending in
some way. On a given device running a specific driver version it's
more likely to be consistent. Comparing between devices or driver
versions is definitely out.
Richard
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