[Mesa-dev] GL_ARB_shader_texture_lod anyone looked?

[Brian Paul]

Dave Airlie wrote:
> I was just diffing fglrx and r300g output for my rv530 and this was on the list.
> 
> I'm wondering what we would need for this? does TGSI have the
> necessary bits? I assume there would be a bit of work in the GLSL
> compiler also.

It would mostly be GLSL work.

We already have the underlying TXD instruction which takes the partial 
derivative operands.

It shouldn't be too hard for someone to do - just follow the example 
of the existing GLSL texture() functions.

-Brian