1233626 - Regression in WebGL 1.0.2 conformance: conformance/glsl/variables/glsl-built-ins.html

Status: RESOLVED FIXED

(Core :: Graphics: CanvasWebGL, defect)

Description

[Luke]

Steps to reproduce:
On Windows with Nvidia hardware navigate to:

https://www.khronos.org/registry/webgl/conformance-suites/1.0.2/conformance/glsl/variables/glsl-built-ins.html

Results:

Testing gl_MaxDrawBuffers
vertex shader
fragment shader
FAIL should be green
at (0, 0) expected: 0,255,0,255 was 255,0,0,255
vertex shader
fragment shader
FAIL should be green
at (0, 0) expected: 0,255,0,255 was 255,0,0,255


Chrome passes all the tests. Firefox used to pass, but now fails with nightly.

Comment 1

[Luke]

Jeff or Kyle,
Are there automated tests to prevent these regressions? I take it this will be fixed upstream too?

Comment 2

[Luke]

On my laptop with Intel(R) HD Graphics 4000
43.0.1: Pass
46.0a1 (2015-12-18): Fail

Comment 3

[Luke]

On my Linux laptop, nightly is also failing this test. Updated platform.

Comment 4

[Kelsey Gilbert [:jgilbert]]

This is the only outstanding failure for my test machines.

Comment 5

[Kelsey Gilbert [:jgilbert]]

Attachment: 0001-Default-MaxDrawingBuffers-to-1-unless-ext-webgl2.patch

Comment 6

[Pulsebot]

https://hg.mozilla.org/integration/mozilla-inbound/rev/301dc9552513

Comment 7

[Phil Ringnalda (:philor)]

https://hg.mozilla.org/mozilla-central/rev/301dc9552513