Using RECT textures in GLSL? (nVidia specific)

[EG]

Is it possible to access RECT texture with nVidia GLSL implementation (and Cg extensions)?

The driver accepts the declaration of a samplerRECT but doesn't seem to know about textureRECT (did it got another name? is it just not in yet? any other doc besides the GDC slides?)

[azazello]

NVidia already support(in det 60) ARB_NPOT extension.

[EG]

I'm on 61.11 on a 5900 and NPOT isn't in the extension list... wouldn't NPOT be only supported by the 6800?

[jra101]

You need to use the sampler2DRect type and the textureRect function to use rectangular textures.

[Sunray]

What's samplerRECT?

[EG]

Thanks! Works like a charm with texture2DRect and texture2DRectProj

Btw great work on the compiler nVidia, if the GLSL-Cg mix is annoying for validation purposes (as raised in another topic), it makes working with the shader language a real pleasure. Having access to the standard uniforms and varying variables directly without having to declare/bind them is the little plus of GLSL that could be a worthy addition to a future version of "pure" Cg if there is one planned.

> What's samplerRECT?

The name for the rectangle texture sampler in Cg (for textures with non-power of two dimensions on hardware that doesn't support the full monty).

[azazello]

>>I'm on 61.11 on a 5900 and NPOT isn't in the extension list... wouldn't NPOT be only supported by the 6800?
sorry, I forget about NV40 emulation settings on my system :-(.