[Webkit-unassigned] [Bug 46493] [chromium] Add mipmap support for ImageLayerChromium

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=46493





--- Comment #17 from W. James MacLean <wjmaclean at chromium.org>  2010-09-29 13:29:31 PST ---
(In reply to comment #16)
> (From update of attachment 69182 [details])
> Code looks good.  Can you please also add a layout test that demonstrates that this works? What I'm after is making sure that we don't get hardware which fails to create mipmaps or reports that it supports mipmapping but doesn't. The test could for example create an image layer with a colored checkerboard texture, apply a perspective 3D transform on it and read back the pixels to make sure they are not black. Thanks.

Sure, not a problem.

I have a question: if hardware claims to support mip-mapping, and doesn't, are we guaranteed to get black pixels? Might it possibly fall-back to linear/nearest interpolation of the raw texture, in which case the pixels won't be black?

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