[Bug 99919] Wrong and unstable image rendering from GLSL fragment shaders

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99919

--- Comment #9 from Matt Turner <mattst88 at gmail.com> ---
(In reply to Roland Scheidegger from comment #8)

Thanks a lot for the analysis. I agree with your assessment.

Changing

-HitData opU(out HitData hd, in vec4 s1, in vec4 s2, in vec2 ca)
+HitData opU(inout HitData hd, in vec4 s1, in vec4 s2, in vec2 ca)

indeed changes the shader program generated for original.frag (but not its
output), and the same change to variant.frag "fixes" its output to match
original.frag.

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