[Bug 89224] Incorrect rendering of Unigine Valley running in VM on VMware Workstation

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89224

--- Comment #7 from Matt Turner <mattst88 at gmail.com> ---
(In reply to Andrey Sudnik from comment #5)
> Created attachment 113683 [details] [review]
> Valley patch for mesa-10.4
> 
> This patch looks more accurately.

I wrote a small vertex shader to reproduce this:

in vec4 vertex;
out vec4 color;

uniform vec4 a, b;

void main() {
    gl_Position = vertex;
    color.xyz = clamp(a.xyz, 0.0, 1.0);
    color.w = a.w;
}

Without your patch, we simply drop the saturate in copy propagation. I need to
come up with a way of testing this other than inspecting the disassembly.

I've sent your patch to the mailing list for review. Thanks!

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