Re: [Openexr-devel] working with "half float" textures in OpenGL

[Drew Hess]

Hi Paul,

These should be helpful:

http://oss.sgi.com/projects/ogl-sample/registry/NV/half_float.txt
http://oss.sgi.com/projects/ogl-sample/registry/NV/float_buffer.txt
http://www.ati.com/developer/SIGGRAPH03/Percy_OpenGL_Extensions_SIG03.pdf

d


Paul Miller <address@hidden> writes:

> For those of you who have worked with these, I have a couple of questions:
>
> 1. what extension(s) should you check for to detect if the hardware
> supports the GL_HALF_FLOAT_NV texture format? This assumes you want
> the broadest range of hardware.  Currently I am checking for
> "GL_NV_half_float" but I haven't tried this on ATI hardware yet.
>
> 2. is it possible to have an RGBA half-float texture organized with
> the channels in a different order (such as BGRA or ARGB)? Or must the
> components be in RGBA order?
>
> Many thanks!
>
> -- 
> Paul Miller | address@hidden | www.fxtech.com | Got Tivo?
>
>
>
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