[Bug 79662] New: [all Bisected]Many webglc cases fail

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=79662

          Priority: high
            Bug ID: 79662
          Assignee: chris at chris-wilson.co.uk
           Summary: [all Bisected]Many webglc cases fail
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: huax.lu at intel.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: Driver/intel
           Product: xorg

System Environment:
--------------------------
Platform: Ivybridge
Libdrm:    (master)libdrm-2.4.54-9-g8fc62ca8ac010659023bb63c4759eb683de4f9af
Mesa:    (master)7913b4b97bab750ffad54e53dec9bbeb56307066
Xserver:(master)xorg-server-1.15.99.902-117-g7ca458493aa2f0aa091c989ea0768611e0730bf5
Xf86_video_intel:(master)2.99.911-256-g08148896196443a8582c30b47ff546acca78d69c
Libva:    (staging)35e70cb9b9c77dfb99fb370e319ed501f0c31b17
Libva_intel_driver:(staging)fbbe401aa28a0b3859d587ef08f0df15a2f7c8f2
Kernel:    (drm-intel-nightly)0a37b5d366831590ebc976018d1bd812ef526a98

Bug detailed description:
-----------------------------
Many webglc cases fail on all platforms. It's Xserver regression.
conformance/canvas/buffer-offscreen-test.html
conformance/canvas/buffer-preserve-test.html
conformance/canvas/canvas-test.html
conformance/canvas/framebuffer-bindings-unaffected-on-resize.html
conformance/canvas/texture-bindings-unaffected-on-resize.html
conformance/canvas/to-data-url-test.html
conformance/context/context-attribute-preserve-drawing-buffer.html
conformance/context/context-release-upon-reload.html
conformance/context/context-release-with-workers.html
conformance/extensions/oes-texture-float-with-canvas.html
conformance/extensions/oes-texture-float-with-image.html
conformance/extensions/oes-texture-float-with-video.html
conformance/misc/delayed-drawing.html
conformance/ogles/mustpass.run.txt
conformance/renderbuffers/framebuffer-state-restoration.html
conformance/rendering/multisample-corruption.html
conformance/textures/tex-image-and-sub-image-2d-with-canvas-rgb565.html
conformance/textures/tex-image-and-sub-image-2d-with-canvas-rgba4444.html
conformance/textures/tex-image-and-sub-image-2d-with-canvas-rgba5551.html
conformance/textures/tex-image-and-sub-image-2d-with-canvas.html
conformance/textures/tex-image-and-sub-image-2d-with-image-rgb565.html
conformance/textures/tex-image-and-sub-image-2d-with-image-rgba4444.html
conformance/textures/tex-image-and-sub-image-2d-with-image-rgba5551.html
conformance/textures/tex-image-and-sub-image-2d-with-image.html
conformance/textures/tex-image-and-sub-image-2d-with-video-rgb565.html
conformance/textures/tex-image-and-sub-image-2d-with-video-rgba4444.html
conformance/textures/tex-image-and-sub-image-2d-with-video-rgba5551.html
conformance/textures/tex-image-and-sub-image-2d-with-video.html
conformance/textures/texture-npot-video.html
conformance/textures/texture-size-cube-maps.html
conformance/textures/texture-size.html

Bisect shows 746be5a03ebbda4ab411ca3efb2ed95f99e9ea46 is the first bad commit.
commit 746be5a03ebbda4ab411ca3efb2ed95f99e9ea46
Author:     Chris Wilson <chris at chris-wilson.co.uk>
AuthorDate: Wed May 28 08:13:59 2014 +0100
Commit:     Keith Packard <keithp at keithp.com>
CommitDate: Mon Jun 2 13:11:15 2014 -0700

    xfree86: Report DRI3 as a built-in module

    This is so that drivers can do a runtime check that DRI3 is available,
    similar to existing runtime checks performed by the drivers for DRI and
    DRI2.

    v2: Only add DRI3 to the list if the module was actually built into the
    server (Mark Kettenis).

    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Cc: Mark Kettenis <mark.kettenis at xs4all.nl>
    Signed-off-by: Keith Packard <keithp at keithp.com>


Reproduce steps:
---------------------------- 
1. xinit
2. go to
https://www.khronos.org/registry/webgl/conformance-suites/1.0.2/webgl-conformance-tests.html
run above cases.

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