render pixel colors on the gpu

[ahdinosaur]

keen to learn how to use graphics code (glsl), what better way to render pixels colors on the gpu.

i see that the pocketbeagle uses the SGX530 gpu chip: "PowerVR's Series5 SGX series features pixel, vertex, and geometry shader hardware, supporting OpenGL ES 2.0 and DirectX 10.1 with Shader Model 4.1."

i was originally keen to use vulkano, but this is probably way too low-level for what i need and is definitely not supported by the pocketbeagle. luminance looks really sweet, but only works on OpenGL 3.3. gfx seems the next obvious candidate, but has yet to release a new re-write gfx-hal@0.1.

while i was pretty keen to get started in the topic, after talking with someone good at graphics i've learned that rendering 1200 pixels (20 edges, each 1m long, with 60 pixels/m) is no big deal for a cpu. this way i can focus in other areas, and make some sweet cpu modes that are redux-y.