Re: Compressed textures

Martins D Innus wrote:
>>>>> Hi,
>>>>>      I get a segfault when viewing an OpenSceneGraph model with
>>>>> compressed textures through tilesort.  It works fine with uncompressed
>>>>> textures.  Stack trace attached.
>>>>
>>>>
>>>>
>>>> I don't see the attachment.
>>>>
>>>> I just tried a Mesa texture compression test and it seemed to work,
>>>> with a little hack.  I had to disable the check for the extension
>>>> GL_EXT_texture_compression_s3tc since it's not fully supported in
>>>> Chromium.  It works to the extent that you can call
>>>> glCompressedTexImage2DARB() with a pre-compressed image.  But Chromium
>>>> doesn't have the S3TC compression/decompression code needed for some
>>>> of other paths.
>>>>
>>>> -Brian
>>>
>>>
>>>
>>> Sorry, here's the trace.  The textures are precompressed so looks 
>>> like it
>>> should work based on what you say above.
>>>
>>> Doesn't seem like it failing on the extension check, as its actually
>>> making the glCompressedTexImage2D call.
>>>
>>> I don't fully understand the code path, but seems like server_index 
>>> is not
>>> being set.
>>
>>
>> Which version of Chromium are you using?  The line numbers in the
>> stack trace don't match current CVS.  You might try the 1.9 release
>> candidate at http://chromium.sourceforge.net/beta/
> 
> 
> I was using 1.9-rc1.  Tried cvs from today with the same result.  Trace 
> attached.

OK, I reproduced the problem here.  There's two things to try:

1. Disable the assertion.  I think it may be bogus.
2. Increase your MTU in your .conf file so it can hold any compressed 
tex image.

-Brian

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