Drawing a textured triangle with CPU instead of GPU

Posted by Jenko on Game Development See other posts from Game Development or by Jenko
Published on 2011-11-13T06:30:06Z Indexed on 2011/11/13 10:11 UTC
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Filed under:

3d

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textures

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Performance

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uvw-mapping

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triangles

I understand the benefits of GPU rendering and such, but for a certain limited application I need to render textured triangles purely using CPU.

I've built a 3D engine capable of object handling, transform, projection, culling and the likes ... now all I need is a little code snippet that draws a single textured triangle onto a bitmap... any language accepted!

Inputs: Texture bitmap, Triangle U/V/W coords, Triangle X/Y screen coords
Output: The textured triangle drawn at the given screen coords

enter image description here

I've currently been using a platform function to draw triangles to screen, but I'm looking to handle it myself to speeden up the process.

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