OpenGL FrameBuffer Object 201
by Rob 'phantom' Jones

Multiple Render Targets

Now we know how to attach multiple textures to an FBO, however we are still only drawing to one texture at a time by switching the draw target and, as helpful as that might be, at the start of the article it was mentioned that we would be covering how to render to multiple textures at the same time.

Well, it turns out that once you understand how to attach multiple textures at once the rest is pretty simple and all you need comes from the Draw Buffers extension and the OpenGL Shading Language (GLSL), both of which are core features of OpenGL 2.0.

The Draw Buffers Extension

Contents

	Introduction
	Selecting The Destination
	The first example
	Multiple Render Targets
	The Draw Buffers Extension
	MRT with FBO and GLSL
	The Second Example
	Final Thoughts

	Source code
	Printable version
	Discuss this article

The Series

OpenGL Frame Buffer Object 101

OpenGL Frame Buffer Object 201