question concerning glteximage2d and buffers

by tdom...@googlemail.com » Thu, 10 Dec 2009 02:11:49 GMT


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 for all those gl*Pointer functions you need to create bytebuffers
through ByteBuffer.allocatedirect. when you want to load a texture
through glteximage2d you need to supply a bytebuffer, too. can this be
a "normal" bytebuffer or do I have to create this one too via
allocatedirect?

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question concerning glteximage2d and buffers

by Jeff Boody » Thu, 10 Dec 2009 12:46:48 GMT


 I believe that the only functions which require allocateDirect are the
gl*Pointer functions. A graphics driver will make it's own copy of the
image data passed in by glTexImage2D and therefore Java can safely
manage the image data passed into this function.

Also, if you use the current SDK you will either get a compile error
or a runtime warning (in logcat) if you pass an incorrectly allocated
ByteBuffer to an OpenGL function.

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