3D texturing basics

Graphics and GPU Programming Programming

Started by RenderCache October 18, 2004 07:08 AM

2 comments, last by RenderCache 19 years, 6 months ago

RenderCache

133

Author

October 18, 2004 07:08 AM

hihi! does anyone know if "24bit per color channel floating GL 3d textures" can be created on ATI cards?? thx! RC

Lutz

462

October 18, 2004 10:17 AM

There is an extension for floating point textures. It seems like ATI cards support 16 Bit and 32 Bit floating point textures. The extension states no limitation to 2D or 1D textures, so 3D textures should also be possible. However, it seems like there is no support for 24 Bit textures. Look at this page to see which ATI cards support this extension (the 9800 pro, for example, does).

mrrolf810p

122

October 18, 2004 04:30 PM

I don't know if it helps but...

Nvidia cards don't support >8 bit floating point 3d textures. To get 16 or 32 bit floating point textures you must use GL_TEXTURE_RECTANGLE_NV, which is only 2D.

Maybe ATI has some similar restrictions.