RE: [Openexr-devel] half textures

[Simon Green]

Ken,

This could be a driver bug, if you can send me a small code sample that 
illustrates the problem I can get it fixed.

As a workaround, couldn't you just create a smaller image in memory and then do 
a normal texture download?

Glad to hear other people are playing around with hardware accelerated OpenEXR 
stuff, anyway!

Simon Green address@hidden
NVIDIA Developer Relations

> -----Original Message-----
> From: address@hidden
> [mailto:address@hidden
> Sent: Tuesday, June 01, 2004 1:23 PM
> To: address@hidden
> Subject: [Openexr-devel] half textures
> 
> 
> I have an app which displays exr's similar to the way
> exrdisplay does by using half textures and fragment shaders.
> But I'm having some trouble and I was hoping someone here might
> be able to help me with it.
> 
> In my app the texture object used to display the image data
> is smaller than the image in memory, so I'm using
> 
>      glPixelStorei( GL_UNPACK_ROW_LENGTH, myDataLen )
> 
> as you'd expect.  This technique works just fine on 8 bit textures,
> but causes an immediate seg fault when used with 16 bit half
> textures (GL_HALF_FLOAT_NV).  Is this a known problem?  Are
> there any workarounds?
> 
> Note that I've tried uploading the texture one scanline at a
> time to get around this, but it is *extremely* slow.
> 
> Thanks.
> --Ken
> 
> 
> 
> 
> 
> _______________________________________________
> Openexr-devel mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/openexr-devel
>