 | | | Fragment Shaders & GL_TEXTURE_RECTANGLE_EXT | Fragment Shaders & GL_TEXTURE_RECTANGLE_EXT 2004-01-15 - By Jeff Rehbein
Back
On Wednesday, January 14, 2004, at 11:49 PM, Brad Anderson wrote:
> This should be a quick question:
> Do fragment shaders that work on textures work when the texture is
> defined as a GL_TEXTURE_RECTANGLE_EXT?
>
> Basically, There are these textures that are not powers of two and the
> fragment shader only loads black when these textures are
> GL_TEXTURE_RECTANGLE_EXT.
>
> shouldn't GL_TEXTURE_RECTANGLE_EXT work like GL_TEXTURE_2D? Granted,
> the texture coordinates are the texture size instead of unitized, but
> that aside...
>
> it will just be a pain in the butt to break the texture into
> individual textures of size 256/512.
>
> Anyway, thanks! Please reply to this account and the list.
> brad anderson
>
It works, but you are required to change the last parameter of your TEX
instruction from 2D to RECT. In other words, you need a separate
version of the shader for each texture target. Wonderful, no?
-Jeff
__ ____ ____ ____ ____ ____ ____ ____ ____ ____
mac-games-dev mailing list | mac-games-dev@(protected)
Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/mac
-games-dev
Do not post admin requests to the list. They will be ignored.
Earn $52 per hosting referral at Lunarpages.
|
|
|