Bug 107839 - [GLSL] WebGL Conformance fragcolor-fragdata-invariant test fails
Summary: [GLSL] WebGL Conformance fragcolor-fragdata-invariant test fails
Status: RESOLVED NOTOURBUG
Alias: None
Product: Mesa
Classification: Unclassified
Component: glsl-compiler (show other bugs)
Version: unspecified
Hardware: Other All
: medium normal
Assignee: mesa-dev
QA Contact: Intel 3D Bugs Mailing List
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Reported: 2018-09-05 12:28 UTC by vadym
Modified: 2019-09-04 11:28 UTC (History)
1 user (show)

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Description vadym 2018-09-05 12:28:06 UTC
Test fails with the latest Mesa in Firefox:

https://www.khronos.org/registry/webgl/sdk/tests/conformance/glsl/misc/fragcolor-fragdata-invariant.html?webglVersion=2&quiet=0

with the following error:
conformance/glsl/misc/fragcolor-fragdata-invariant.html (Passed: 1/2 Failed: 1/2 in 98.0 ms)

    failed: [unexpected fragment shader compile status] (expected: true) Declaring both gl_FragColor and gl_FragData invariant should succeed.
Comment 1 Tapani Pälli 2018-09-05 13:51:00 UTC
But passes fine on Chrome, better check if Firefox is giving sensible input to the driver.
Comment 2 Danylo 2018-09-05 14:08:06 UTC
Indeed, it seems it is not a Mesa's bug since in dev console in Firefox there is next error:

 *** Error compiling FRAGMENT_SHADER '[object WebGLShader]':ERROR: 0:6: 'gl_FragData' : cannot use both gl_FragData and gl_FragColor
ERROR: 0:10: 'gl_FragColor' : cannot use both gl_FragData and gl_FragColor

Which isn't a Mesa's error.

The WebGL test in question should have failed with current Mesa - see https://bugs.freedesktop.org/show_bug.cgi?id=107842
However it passes on Chrome and it looks like Chrome completely ignores invariant qualifiers...
Comment 3 Denis 2019-09-04 11:28:58 UTC
Hi. Looks like there was a fix in FF. Test became passed

Declaring both gl_FragColor and gl_FragData invariant should succeed.

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".

test: Declaring both gl_FragColor and gl_FragData invariant should succeed.
default vertex shader
default vertex shader translated for driver
test fragment shader
test fragment shader translated for driver
PASS Declaring both gl_FragColor and gl_FragData invariant should succeed.
PASS successfullyParsed is true

TEST COMPLETE


closing


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