[Qt-interest] Copying content between textures

[John Clayton]

Hi All

I have a texture on the graphics card, which is of type  
GL_TEXTURE_RECTANGLE_EXT (lets call it texture A), and I'd like to  
copy that into a GL_TEXTURE_2D texture (lets call that texture B).  Is  
it possible to copy the texture from A into B?  One way I have thought  
of doing this is:

1. render whatever to texture A
2. create an FBO, of type GL_TEXTURE_2D (this is texture B)
3. B.bind()
4. B.drawTexture(someRect, A, GL_TEXTURE_RECTANGLE_EXT)

would that work, or can you see a problem with it?

Thanks
--
John Clayton
Skype: johncclayton




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