Framebuffer object: Difference between revisions

Revision as of 12:34, 19 November 2006

Revision as of 12:58, 19 November 2006

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The '''frame buffer object''' architecture (FBO) is an extension to [[OpenGL]] for doing ''flexible off-screen rendering'', including rendering ''to a texture''. By capturing images that would normally be drawn to the screen, it can be used to implement a large variety of image filters,

and ''post processing effects''. The FBO is analogous to the '''render targets model''' in [[DirectX]]. It is now the main choice in OpenGL because of it'sits ''superior efficiency, and ease of use''. It has largely superseded the [[pbuffer]], and other methods involving OpenGL context switching, often chosen because it does not.

==Uses==

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* It is easier to setup than most other methods.

* Does not require context switching.

* Is more efficient duebecause resources beingare shared within the same context.

* Is more flexible because all of depth buffer, stencil buffer, accumulation buffer, etc. can be acquired.

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attach these to a chosen receiver; either a [[texture]], or a [[render buffer]].

forFor example:

* create an FBO