The real issue is that dithering is enabled on all framebuffer formats,
including 32 bpp ones. This way I "think" the R300 hardware can make the
resulting image be perceived as having more bpp than 32. Maybe I should have
consulted this feature with other Radeon developers to see whether this is
true or not. However I am pretty sure that at least 4 tests fail because of
this. glDisable(GL_DITHER) would help too.
On Mon, Feb 8, 2010 at 4:38 PM, Keith Whitwell <kei...@vmware.com> wrote:
> On Mon, 2010-02-08 at 07:20 -0800, Brian Paul wrote:
> > be propagated through the pipeline when doing flat
> > shading, no lighting, etc.
>
> Is this is the perennial problem that GL's float->unorm and unorm->float
> conversion rules are not strict inverses of one another? IE, if you
> take 255, convert to float, convert back to int, do you get 255?
>
> Keith
>
>
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