[Webkit-unassigned] [Bug 200901] New: Pass conformance/attribs WebGL conformance tests

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=200901

            Bug ID: 200901
           Summary: Pass conformance/attribs WebGL conformance tests
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebGL
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: kbr at google.com
                CC: dino at apple.com, enga at chromium.org
            Blocks: 198948

Currently WebKit's WebGL implementation fails a few of the conformance/attribs WebGL conformance tests, specifically:

https://www.khronos.org/registry/webgl/sdk/tests/conformance/attribs/gl-disabled-vertex-attrib-update.html?webglVersion=1&quiet=0&quick=1
https://www.khronos.org/registry/webgl/sdk/tests/conformance/attribs/gl-vertexattribpointer.html?webglVersion=1&quiet=0&quick=1
https://www.khronos.org/registry/webgl/sdk/tests/conformance/attribs/gl-vertex-attrib-unconsumed-out-of-bounds.html?webglVersion=1&quiet=0&quick=1

The reason appears to be that the spec was changed recently to allow vertexAttribPointer to be called with a null WebGLBuffer bound, but only if the associated offset is 0, in order to reset the vertex attribute's state. This one fix will likely fix all of these tests.


Referenced Bugs:

https://bugs.webkit.org/show_bug.cgi?id=198948
[Bug 198948] Meta: use ANGLE as the backend for WebKit's WebGL implementation
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