1 files changed, 48 insertions, 0 deletions

diff --git a/testdata/later.ignore/DemoUtils.lc b/testdata/later.ignore/DemoUtils.lc
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+++ b/testdata/later.ignore/DemoUtils.lc
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+module DemoUtils
+    ( module DemoUtils
+    , module Prelude
+    ) where
+
+time = Uniform "Time" :: Float
+
+--v3v4 = PrimV3FToV4F
+
+-- example combinators
+image color = FrameBuffer (DepthImage @1 1000.0, ColorImage @1 color)
+
+triangleRasterCtx = TriangleCtx CullNone PolygonFill NoOffset LastVertex
+colorFragmentCtx = accumulationContext (DepthOp Less True, ColorOp NoBlending (V4 True True True True))
+
+rasterizeWith = Rasterize
+triangles = triangleRasterCtx
+
+cubeVertexStream = fetch "stream4" Triangle (Attribute "position4" :: Vec 4 Float)
+mapFragments s fs bg = accumulate colorFragmentCtx PassAll (FragmentShaderRastDepth $ \a -> fs a) s bg
+transform s f =  Transform (\v -> VertexOut (f v) 1.0 () (Smooth v)) s
+
+cube v f bg = (cubeVertexStream         -- cube vertices
+    `transform`    v    -- scale them
+     &             rasterizeWith triangles  -- rasterize
+    `mapFragments` f) bg
+
+
+
+withCoords f a = f (a%x) (a%y)
+
+fragmentTest f =   quadVertexStream
+    `transformQ`    id
+     &             rasterizeWith triangles
+    `mapFragmentsQ` withCoords f
+  where
+    clearQ = FrameBuffer $ ColorImage @1 $ V4 1 0 0 0.5
+
+    colorFragmentCtxQ = accumulationContext (ColorOp NoBlending (V4 True True True True))
+    mapFragmentsQ s fs = accumulate colorFragmentCtxQ PassAll (FragmentShader $ \a -> fs a) s clearQ
+
+    quadVertexStream = fetch "quad" Triangle (Attribute "position" :: Vec 2 Float)
+
+    tr :: Vec 2 Float -> Vec 4 Float
+    tr a = V4 a%x a%y 1 1
+
+    transformQ s f =  Transform (\v -> VertexOut (tr $ f v ) 1 () (Smooth v)) s
+