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makeFrame (projmat :: Mat 4 4 Float)
(prims :: PrimitiveStream Triangle ((Vec 4 Float)))
= imageFrame (emptyDepthImage 1000, emptyColorImage navy)
`overlay`
prims
& mapPrimitives (\((x)) -> (scale 0.5 $ projmat *. x, x))
& rasterizePrimitives (TriangleCtx CullNone PolygonFill NoOffset LastVertex) ((Smooth))
& filterFragments (\_ -> True)
& mapFragments (\((x)) -> ((x)))
& accumulateWith ({-defaultFragOp @(Depth Float) @_ -}DepthOp Less True, ColorOp NoBlending (V4 True True True True))
main = renderFrame $
makeFrame (Uniform "MVP")
(fetch "stream4" ((Attribute "position4")))
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