Bug 89754

Summary:	vertexAttrib fails WebGL Conformance test with mesa drivers
Product:	Mesa	Reporter:	Luke <lukebenes>
Component:	Mesa core	Assignee:	mesa-dev
Status:	RESOLVED FIXED	QA Contact:	mesa-dev
Severity:	normal
Priority:	medium	CC:	matthew
Version:	unspecified
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Luke 2015-03-25 03:57:13 UTC

Steps to reproduce:
1. Using an Mesa driver (nouveau or radeon) visit 
https://www.khronos.org/registry/webgl/conformance-suites/1.0.2/conformance/attribs/gl-vertex-attrib-render.html
2. Using a proprietary driver visit
https://www.khronos.org/registry/webgl/conformance-suites/1.0.2/conformance/attribs/gl-vertex-attrib-render.html

Expected results:
Both sets of drivers pass

Actual results:
With both Firefox and Chrome, only the proprietary drivers pass.

Comment 1 Tapani Pälli 2015-03-25 05:21:31 UTC

test passes on i965 driver

Comment 2 Ilia Mirkin 2015-03-26 17:19:10 UTC

I sent a piglit test which should make this easier to debug:

http://patchwork.freedesktop.org/patch/45692/

I believe the problem is that gallium never notices the updated vertex size. I haven't debugged it in detail though. As with the WebGL test, this passes on i965 (HSW), and fails with llvmpipe and softpipe (with DRAW_USE_LLVM=false for good measure).

Comment 3 Ilia Mirkin 2015-03-27 02:39:17 UTC

Fix pushed in 9d1b5febb6. Thanks for reporting!

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.