Computational Resources
There are a variety of computational resources available on the GPU:
- Programmable processors – Vertex, primitive, and fragment pipelines allow programmer to perform kernel on streams of data
- Rasterizer – creates fragments and interpolates per-vertex constants such as texture coordinates and color
- Texture Unit – read only memory interface
- Framebuffer – write only memory interface
In fact, the programmer can substitute a write only texture for output instead of the framebuffer. This is accomplished either through Render to Texture (RTT), Render-To-Backbuffer-Copy-To-Texture (RTBCTT), or the more recent stream-out.
Read more about this topic: GPGPU, GPGPU Programming Concepts, GPU Programming Concepts
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