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Re: Texture basics
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Re: Texture basics

On Mar 27, 2008, at 11:59 AM, Richard Schreyer wrote:
Are you calling TexImage2D between GenTextures and CopyTexSubImage2D? 

Yep.. I snagged that code from QuartzComposer_WWDC_QCTV

Possibilities solutions are:
Adding glTexImage2D(pixels=NULL) between Gen and Sub
Replacing CopyTexSubImage2D with CopyTexImage2D

Tried both and still nothing. I feel like I'm missing something fundamental here.

One possible area of confusion is with the NSOpenGLPixelBuffer. It gets a texture target but I don't ever create or bind a texture for it. That code I snagged from another sample (which I can't recall now) and it's been working great in a slightly different application so I never questioned it.

You should also investigate using Framebuffer Objects to render into the texture directly, rather than copying data into the texture.

I read about those briefly but I felt that I had a better chance of making it work the other way given all of the sample code laying around. I'll give Framebuffer objects a try too.
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 >Texture basics (From: Steve Green <email@hidden>)
 >Re: Texture basics (From: Richard Schreyer <email@hidden>)



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