Projective texturing with HLSL?

Graphics and GPU Programming Programming

Started by acid2 November 08, 2004 04:28 PM

2 comments, last by EvilDecl81 19 years, 5 months ago

451

Author

November 08, 2004 04:28 PM

Hi, I'm quite new to HLSL. But how does this work? I want to be able to project a texture onto a mesh, generally. I see that HLSL has tex2Dproj etc - but don't totally udnerstnad. Someone please enlighten me!

Ollie"It is better to ask some of the questions than to know all the answers." ~ James Thurber[ mdxinfo | An iridescent tentacle | Game design patterns ]

hplus0603

11,916

November 08, 2004 04:46 PM

That's why there is documentation.

Try searching for "HLSL" for example. Or perhaps "HLSL sample code".

enum Bool { True, False, FileNotFound };

acid2

451

Author

November 09, 2004 06:23 AM

No, I understand HLSL - what I don't understand is that actual use of tex2Dproj, however - yea i am searching MSDN for some help on that.

Ollie"It is better to ask some of the questions than to know all the answers." ~ James Thurber[ mdxinfo | An iridescent tentacle | Game design patterns ]

EvilDecl81

360

November 09, 2004 02:55 PM

Quote:Original post by acid2
Hi,

I'm quite new to HLSL. But how does this work? I want to be able to project a texture onto a mesh, generally. I see that HLSL has tex2Dproj etc - but don't totally udnerstnad.

Someone please enlighten me!

tex2Dproj takes a 4 vector and divides the coordinates by the w component. The third component is ignored for 2D textures.

EvilDecl81

Projective texturing with HLSL?

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