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Re: [Public WebGL] Tolerances in video upload tests



Thanks.

Since there were no objections to making this bug fix, it's been
committed in https://github.com/KhronosGroup/WebGL/pull/231 .

-Ken


On Fri, Mar 15, 2013 at 4:24 PM, Gregg Tavares <gman@google.com> wrote:
> Looks good to me.
>
>
> On Fri, Mar 15, 2013 at 4:03 PM, Kenneth Russell <kbr@google.com> wrote:
>>
>> Recently hardware-accelerated video decoding was enabled in Chrome. The
>> difference in behavior between the hardware and software video decoding path
>> caused the video-related WebGL conformance tests to start failing, because,
>> as it turns out, those tests have to date always required an exact pixel
>> match, which is a bug in the test. Video encoding is lossy, and exact pixel
>> matches can not be guaranteed.
>>
>> I've uploaded a pull request to increase the tolerances in these tests.
>> The new tolerance is low enough to ensure correct colors, but above what was
>> required to make these tests pass with the particular vendor's hardware
>> decoding implementation.
>>
>> https://github.com/KhronosGroup/WebGL/pull/227
>>
>> This pull request affects the 1.0.1, 1.0.2, and top of tree conformance
>> suites.
>>
>> Please post any comments about this change to the list.
>>
>> Thanks,
>>
>> -Ken
>>
>

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