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deg30 = 0.5235987755982988 -- pi/6
coordmap (time::Float) (p::Vec 4 Float)
= perspective 0.1 -- near plane
100 -- far plane
deg30 -- y fov radians
1 -- aspect ratio w/h
*. lookat (V3 0 0 10) -- camera position
(V3 0 0 0) -- target position
(V3 0 1 0) -- upward direction
*. rotMatrixX time -- time = radians
*. rotMatrixZ time -- time = radians
*. p
blendplane = -- NoBlending -- BlendLogicOp Xor
Blend (FuncAdd,FuncAdd)
((OneBF,SrcAlpha),(DstAlpha,DstAlpha))
(V4 0 0 0 0)
makeFrame (time :: Float)
(color :: Vec 4 Float)
(texture :: Texture)
(prims :: PrimitiveStream Triangle (Vec 4 Float, Vec 3 Float, Vec 3 Float))
(plane :: PrimitiveStream Triangle ((Vec 4 Float)))
= imageFrame (emptyDepthImage 1, emptyColorImage (V4 0 0 0.4 1))
`overlay`
prims
& mapPrimitives (\(p,n,uvw) -> ( coordmap time p, V2 uvw%x (1 - uvw%y) ))
& rasterizePrimitives (TriangleCtx CullBack PolygonFill NoOffset LastVertex) ((Smooth))
& mapFragments (\((uv)) -> ((color * texture2D (Sampler PointFilter MirroredRepeat texture) uv )))
& accumulateWith (DepthOp Less True, ColorOp NoBlending (V4 True True True True))
`overlay`
plane
& mapPrimitives (\((p)) -> (coordmap time p, p%xy ))
& rasterizePrimitives (TriangleCtx CullNone PolygonFill NoOffset LastVertex) ((Smooth))
-- & mapFragments (\((uv)) -> ((texture2D (Sampler PointFilter MirroredRepeat texture) uv )))
-- & mapFragments (\((uv)) -> ((V4 uv%x uv%y 0 1))) -- ((rgb 1 0 0)))
& mapFragments (\((uv)) -> let k=cos(g *! (8 * pi / 4))
g=uv -- *! (1 + sqrt (abs (t%x * t%y)))
t=normalize uv
c=k -- *! ( t%x * t%y) -- /! ((k%x + k%y) / k%x)
r = V4 1 1 1 0 *! smoothstepS 0.99 1.0 (max c%x c%y)
in ((r + V4 0 0 0 (0.8))))
& accumulateWith (DepthOp Less True, ColorOp blendplane (V4 True True True True))
main = renderFrame $
makeFrame (Uniform "time")
(Uniform "diffuseColor")
(Texture2DSlot "diffuseTexture")
(fetch "objects" (Attribute "position", Attribute "normal", Attribute "uvw"))
(fetch "plane" ((Attribute "position")))
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