Reviewed by Kenneth Russell.

        Update validation of stencil mask and ref values
        https://bugs.webkit.org/show_bug.cgi?id=50716

        * html/canvas/WebGLRenderingContext.cpp:
        (WebCore::WebGLRenderingContext::initializeNewContext): Initialize cached stencil settings.
        (WebCore::WebGLRenderingContext::drawArrays): Validate stencil settings.
        (WebCore::WebGLRenderingContext::drawElements): Ditto.
        (WebCore::WebGLRenderingContext::stencilFunc): Cache stencil settings, but generate no error.
        (WebCore::WebGLRenderingContext::stencilFuncSeparate): Ditto.
        (WebCore::WebGLRenderingContext::stencilMask): Ditto.
        (WebCore::WebGLRenderingContext::stencilMaskSeparate): Ditto.
        (WebCore::WebGLRenderingContext::validateStencilSettings): Helper function to validate stencil settings.
        * html/canvas/WebGLRenderingContext.h: Declare stencil setting members.
2010-12-29  Zhenyao Mo  <zmo@google.com>

        Reviewed by Kenneth Russell.

        Update validation of stencil mask and ref values
        https://bugs.webkit.org/show_bug.cgi?id=50716

        * fast/canvas/webgl/webgl-specific-expected.txt: Sync with khronos: refactor the test, also update the stencil setting test due to spec change.
        * fast/canvas/webgl/webgl-specific.html: Ditto.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@74818 268f45cc-cd09-0410-ab3c-d52691b4dbfc