[Mesa-dev] [PATCH 2/6] Add the format enums for BPTC-compressed images

[Alex Deucher]

On Wed, Jul 23, 2014 at 5:57 PM, Ian Romanick <idr at freedesktop.org> wrote:
> On 07/22/2014 12:09 PM, Neil Roberts wrote:
>> diff --git a/src/mesa/main/texcompress.c b/src/mesa/main/texcompress.c
>> index 9dbfe9f..b708b49 100644
>> --- a/src/mesa/main/texcompress.c
>> +++ b/src/mesa/main/texcompress.c
>> @@ -235,6 +235,12 @@ _mesa_gl_compressed_format_base_format(GLenum format)
>>   * GL_EXT_texture_compression_latc.  At the very least, Catalyst 11.6 does not
>>   * expose the 3dc formats through this mechanism.
>>   *
>> + * The spec for GL_ARB_texture_compression_bptc doesn't mention whether it
>> + * should be included in GL_COMPRESSED_TEXTURE_FORMATS. However as it takes a
>> + * very long time to compress the textures in this format it's probably not
>> + * very useful as a general format where the GL will have to compress it on
>> + * the fly.
>> + *
>
> What do NVIDIA and AMD do?  We should mimic that.

I asked our closed source GL team and they said they do include it in
GL_COMPRESSED_TEXTURE_FORMATS.

Alex

>
>>   * \param ctx  the GL context
>>   * \param formats  the resulting format list (may be NULL).
>>   *
>
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