Re: d3d9: Add DF16 support

[Chris Robinson]

On Sunday 07 June 2009 2:05:41 pm Frank Richter wrote:
> On what graphics cards is that extension supported?
> DF16 is supported since the R300. It appears that float depth formats
> are much younger, so it seems unlikely DF16 is actually a float format
> internally.

Just to note, there is a much earlier depth-float format in GL, before the ARB 
or NV versions came out:
http://www.opengl.org/registry/specs/EXT/wgl_depth_float.txt

It seems its main purpose is increased precision over the non-linear range of 
the buffer values. Unfortunately, Wine doesn't implement this extension, as 
there is no GLX equivalent.