[Mesa3d-dev] [Bug 3165] New: texImage.IsCompressed and texImage.CompressedSize issues

[<bug...@fr...>]

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https://bugs.freedesktop.org/show_bug.cgi?id=3165          
     
           Summary: texImage.IsCompressed and texImage.CompressedSize issues
           Product: Mesa
           Version: CVS
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Mesa core
        AssignedTo: mes...@li...
        ReportedBy: fx...@gm...


texImage.IsCompressed and texImage.CompressedSize are set in
_mesa_init_teximage_fields based on the texture's internalFormat specified by
the application. However, the driver may want to choose an uncompressed format
instead of a compressed one or it may want to compress textures with e.g.
internalFormat=GL_COMPRESSED_RGBA, which is not recognized as compressed right
now. In such cases IsCompressed ends up being clearly wrong and leads to weird
crashes later on. I suspect that wrong texture image sizes and/or row strides in
_mesa_store_teximage_... are responsible.

I believe texImage.IsCompressed and texImage.CompressedSize should be
initialized after the driver has chosen a hardware texture format and based on
that hardware format instead of the internalFormat specified by the application.
Does that make sense or am I trying to do something stupid?          
     
     
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