mesa3d-users

[Mesa3d-users] Texture compression support in software rasterizer

[Philipp K. K. <pk...@sp...>]

Why are S3TC and FXT1 not supported in the software rasterizer? They do
not appear in the extension list. Is there an easy way to activate them
(the code is there and used for software fallbacks in drivers that
support S3TC or FXT1)?

Philipp

Re: [Mesa3d-users] Texture compression support in software rasterizer

[Brian P. <bri...@tu...>]

Philipp Klaus Krause wrote:
> Why are S3TC and FXT1 not supported in the software rasterizer? They do
> not appear in the extension list. Is there an easy way to activate them
> (the code is there and used for software fallbacks in drivers that
> support S3TC or FXT1)?

I think you just need the external dxt compression library. Google for 
"mesa s3tc compression"

-Brian

Re: [Mesa3d-users] Texture compression support in software rasterizer

[Philipp K. K. <pk...@sp...>]

Brian Paul schrieb:
> Philipp Klaus Krause wrote:
>> Why are S3TC and FXT1 not supported in the software rasterizer? They do
>> not appear in the extension list. Is there an easy way to activate them
>> (the code is there and used for software fallbacks in drivers that
>> support S3TC or FXT1)?
> 
> I think you just need the external dxt compression library. Google for
> "mesa s3tc compression"
> 
> -Brian
> 

It's installed (otherwise texture compression wouldn't work with the DRI
driver). Furthermore it's needed for S3TC only, and I don't even get FXT1.

Philipp

Re: [Mesa3d-users] Texture compression support in software rasterizer

[Marcos B. <mar...@gm...>]

What is the name of game/application?

2008/11/22 Philipp Klaus Krause <pk...@sp...>:
> Brian Paul schrieb:
>> Philipp Klaus Krause wrote:
>>> Why are S3TC and FXT1 not supported in the software rasterizer? They do
>>> not appear in the extension list. Is there an easy way to activate them
>>> (the code is there and used for software fallbacks in drivers that
>>> support S3TC or FXT1)?
>>
>> I think you just need the external dxt compression library. Google for
>> "mesa s3tc compression"
>>
>> -Brian
>>
>
> It's installed (otherwise texture compression wouldn't work with the DRI
> driver). Furthermore it's needed for S3TC only, and I don't even get FXT1.
>
> Philipp
>
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-- 
Marcos Henrique Esteves Barbosa
mar...@gm...

Re: [Mesa3d-users] Texture compression support in software rasterizer

[Philipp K. K. <pk...@sp...>]

Marcos Barbosa schrieb:
> What is the name of game/application?
> 

Just glxinfo: With LIBGL_ALWAYS_INDIRECT=1 I don't get the texture
compression extensions in the output, without it I do get them.

Philipp

Re: [Mesa3d-users] Texture compression support in software rasterizer

[Philipp K. K. <pk...@sp...>]

Would it be sufficient to add

ctx->Extensions.EXT_texture_compression_s3tc = GL_TRUE;
ctx->Extensions.GL_S3_s3tc = GL_TRUE;
ctx->Extensions.GL_3DFX_texture_compression_FXT1 = GL_TRUE;

to _mesa_enable_sw_extensions() in extensions.c to enable texture
compression in the software rasterizer?

Philipp

Re: [Mesa3d-users] Texture compression support in software rasterizer

[Brian P. <bri...@tu...>]

Philipp Klaus Krause wrote:
> Would it be sufficient to add
> 
> ctx->Extensions.EXT_texture_compression_s3tc = GL_TRUE;
> ctx->Extensions.GL_S3_s3tc = GL_TRUE;
> ctx->Extensions.GL_3DFX_texture_compression_FXT1 = GL_TRUE;
> 
> to _mesa_enable_sw_extensions() in extensions.c to enable texture
> compression in the software rasterizer?

That's basically it.  I've checked in a change that does this when the 
external dxt compression library is found.

-Brian