55 lines
1.9 KiB
Haskell
55 lines
1.9 KiB
Haskell
module Shader.Bind
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( bindShaderLayers
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, bindShaderBuffers
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, bindShader
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) where
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import Shader.Data
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import Shader.Parameters
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--import Shader.ExtraPrimitive
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import Graphics.Rendering.OpenGL hiding (Line,translate,scale,imageHeight,Polygon,Color,T)
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import Foreign hiding (rotate)
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import qualified Data.Vector.Unboxed.Mutable as UMV
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import qualified Data.Vector.Mutable as MV
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import qualified Data.Vector.Fusion.Stream.Monadic as VS
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import Control.Monad.Primitive
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import Control.Monad
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bindArrayBuffers :: Int -> VBO -> IO ()
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bindArrayBuffers numVs theVBO = do
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bindBuffer ArrayBuffer $= Just (_vbo theVBO)
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bufferSubData
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ArrayBuffer
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WriteToBuffer
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0
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(fromIntegral $ floatSize * numVs * sum (_vboAttribSizes theVBO))
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(_vboPtr theVBO)
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bindShaderLayers :: MV.MVector (PrimState IO) FullShader -> UMV.MVector (PrimState IO) Int -> IO ()
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bindShaderLayers shads counts = MV.imapM_ f shads
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where
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f i shad = do
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let theVBO = _vaoVBO $ _shadVAO shad
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stride = sum $ _vboAttribSizes theVBO
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bindBuffer ArrayBuffer $= (Just . _vbo $ theVBO)
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VS.mapM_ (g stride theVBO) $ VS.enumFromStepN 0 1 6 -- [0..5]
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where
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g stride theVBO lay = do
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numVs <- UMV.unsafeRead counts $ lay * 6 + i
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bufferSubData
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ArrayBuffer
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WriteToBuffer
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(fromIntegral $ floatSize * stride * numSubElements * lay)
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(fromIntegral $ floatSize * numVs * stride)
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(_vboPtr theVBO `plusPtr` (floatSize * stride * numSubElements * lay))
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bindShader :: MV.MVector (PrimState IO) FullShader -> UMV.MVector (PrimState IO) Int -> IO ()
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bindShader shads counts = MV.imapM_ f shads
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where
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f i shad = UMV.read counts i >>= flip bindArrayBuffers (_vaoVBO . _shadVAO $ shad)
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bindShaderBuffers :: [FullShader] -> [Int] -> IO ()
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bindShaderBuffers = zipWithM_ f
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where
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f fs i = bindArrayBuffers i $ _vaoVBO $ _shadVAO fs
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