[Webkit-unassigned] [Bug 201784] Layout Test webgl/2.0.0/conformance/glsl/misc/shaders-with-invariance.html is failing since ANGLE roll

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=201784

--- Comment #4 from Dean Jackson <dino at apple.com> ---
The difference is in the translated fragment shader source.

Before:
invariant varying mediump vec4 webgl_a78e73e400000001;
void main(){
(gl_FragColor = vec4(0.0, 0.0, 0.0, 0.0));
(gl_FragColor = webgl_a78e73e400000001);
}

After:
varying mediump vec4 webgl_a78e73e400000001;
void main(){
(gl_FragColor = vec4(0.0, 0.0, 0.0, 0.0));
(gl_FragColor = webgl_a78e73e400000001);
}

However, my reading of the GLSL specifications says this is ok.

"Only variables output from a shader can be candidates for invariance. This includes user-defined output variables and the built-in output variables. As only outputs can be declared as invariant, an output from one shader stage will still match an input of a subsequent stage without the input being declared as invariant."

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