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makeFrame (time :: Float)
(texture :: Texture)
(prims :: Stream (Primitive Triangle (Vec 2 Float, Vec 2 Float)))
= imageFrame (emptyColorImage (V4 0 0 0.4 1))
`overlay`
prims
& mapPrimitives (\(p,uv) -> (rotMatrixZ time *. (V4 p%x p%y (-1) 1), uv))
& rasterizePrimitives (TriangleCtx CullNone PolygonFill NoOffset LastVertex) Smooth
& mapFragments (\uv -> texture2D (Sampler PointFilter MirroredRepeat texture) uv)
& accumulateWith (ColorOp NoBlending (V4 True True True True))
main = renderFrame $
makeFrame (Uniform "time")
(Texture2DSlot "diffuseTexture")
(fetch_ "objects" (Attribute "position", Attribute "uv"))
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