Re: xfree will be the best....

Keith Packard wrote:
> Around 12 o'clock on Apr 6, Marco Bubke wrote:
> 
> 
>>How difficult would it be to layer Render over OpenGL? I really don't 
>>know render but it looks to me a little bit like the classic OpenGL 
>>raster stage.
> 
> 
> That shouldn't be surprising; the intent was to make hardware that 
> supports OpenGL able to accelerate most of the Render extension.
> 
> However, there are a few operations which OpenGL doesn't efficiently 
> accelerate in some implementations, most notably the text operations which 
> dominate most 2D interfaces and rendering to off-screen images (pbuffers).
> 
> In addition, Render includes per-component (RGBA) compositing to improve
> image quality on LCD screens and a few new compositing modes needed for
> interactive applications.  The compositing modes should be largely
> compatible with OpenGL, but the component-level compositing has no 
> equivalent in the OpenGL world that I'm aware of.  Hence, any Render 
> implementation is likely to include at least some software component that 
> touches the raw pixels for the forseeable future which is difficult to do 
> through OpenGL.

As soon as any vendor makes hardware with a 3d engine capable of this stuff, 
the first thing they'll do is export it as an OpenGL extension.

Keith