[cairo] glitz and shader programs

[Jon Smirl]

The Mesa implementation is experimental and slow as molasses. Keithw is trying
to make it compile x86 programs but that isn't working that well yet. 

As of today there are no mesa implementation that use hardware shaders.

--- Vladimir Vukicevic <vladimir at pobox.com> wrote:
> Jon Smirl wrote:
> 
> > There are zero open source shader implementations and no hardware
> manufacturer
> > has released the docs needed to build one. Since we need Mesa to build a
> > standalone OpenGL there is no solution for Mesa and glitz.
> 
> I was under the impression that Mesa already had ARB_vertex_program and 
> ARB_fragment_program implemented; are you referring to the docs needed 
> to implement shaders in Mesa using the native hardware shader architecture?
> 
> Going forward, I don't really see any of the major players (read: nvidia 
> and ATI) becoming any more "open source" friendly, as far as hardware 
> documentation goes -- we'll probably be stuck with proprietary drivers 
> for some time now, fairly good ones in nvidia's case, and horrid ones in 
> ATI's case.
> 
> The question then becomes whether purely software Mesa can be fast 
> enough to deliver a desktop based on the features that glitz wants to 
> use, so that it can be considered "baseline functionality", no?
> 
> 	- Vlad
> 

=====
Jon Smirl
jonsmirl at yahoo.com


	
		
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