OpenGL pixel shader: Difference between revisions
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{{draft task|OpenGL}}
Using the triangle geometry from [[OpenGL]]. But instead of using a mechanism such as glColor3d, use a [[wp:Pixel Shader|pixel shader]] for each pixel in the triangle. The pixel shader should pick a random RGB color for each pixel. Most pixels should have colors which are different from that of most other pixels.
Optional: provide an update mechanism, to repeatedly re-render the triangle. (Possibilities include a mouse event handler, a timer event handler or an infinite loop, or even window expose events.) Shader generated color for each pixel should be different in each render.
Optional: after updating the opengl rendering target but before rendering the triangle, query the opengl implementation to determine which versions of shaders are supported by the rendering target, list the tested shaders and the available shaders and then use a supported shader.
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