145 lines
5.6 KiB
Haskell
145 lines
5.6 KiB
Haskell
{-# LANGUAGE BangPatterns #-}
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module Render.Render where
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import qualified Data.ByteString as B
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import Foreign.Marshal.Array (withArray)
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import Foreign.Storable (sizeOf)
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import Graphics.Rendering.OpenGL.GL.BufferObjects
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import Graphics.Rendering.OpenGL.GL.Framebuffer (clearColor)
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import Graphics.Rendering.OpenGL.GL.ObjectName
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import Graphics.Rendering.OpenGL.GL.PerFragment
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import Graphics.Rendering.OpenGL.GL.Shaders
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import Graphics.Rendering.OpenGL.GL.StateVar
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import Graphics.Rendering.OpenGL.GL.VertexArrays (Capability (..),
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vertexAttribArray)
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import Graphics.Rendering.OpenGL.GL.VertexSpec
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import Graphics.Rendering.OpenGL.Raw.Core31
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import Render.Misc
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mapVertexShaderFile :: String
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mapVertexShaderFile = "shaders/map/vertex.shader"
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mapTessControlShaderFile :: String
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mapTessControlShaderFile = "shaders/map/tessControl.shader"
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mapTessEvalShaderFile :: String
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mapTessEvalShaderFile = "shaders/map/tessEval.shader"
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mapFragmentShaderFile :: String
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mapFragmentShaderFile = "shaders/map/fragment.shader"
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uiVertexShaderFile :: String
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uiVertexShaderFile = "shaders/ui/vertex.shader"
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uiFragmentShaderFile :: String
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uiFragmentShaderFile = "shaders/ui/fragment.shader"
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initBuffer :: [GLfloat] -> IO BufferObject
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initBuffer varray =
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let
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sizeOfVarray = length varray * sizeOfComponent
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sizeOfComponent = sizeOf (head varray)
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in do
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bufferObject <- genObjectName
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bindBuffer ArrayBuffer $= Just bufferObject
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withArray varray $ \buffer ->
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bufferData ArrayBuffer $= (fromIntegral sizeOfVarray, buffer, StaticDraw)
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checkError "initBuffer"
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return bufferObject
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initMapShader :: IO (
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Program -- ^ the GLSL-Program
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, AttribLocation -- ^ color
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, AttribLocation -- ^ normal
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, AttribLocation -- ^ vertex
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, UniformLocation -- ^ ProjectionMat
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, UniformLocation -- ^ ViewMat
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, UniformLocation -- ^ ModelMat
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, UniformLocation -- ^ NormalMat
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, UniformLocation -- ^ TessLevelInner
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, UniformLocation -- ^ TessLevelOuter
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)
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initMapShader = do
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! vertexSource <- B.readFile mapVertexShaderFile
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! tessControlSource <- B.readFile mapTessControlShaderFile
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! tessEvalSource <- B.readFile mapTessEvalShaderFile
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! fragmentSource <- B.readFile mapFragmentShaderFile
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vertexShader <- compileShaderSource VertexShader vertexSource
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checkError "compile Vertex"
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tessControlShader <- compileShaderSource TessControlShader tessControlSource
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checkError "compile TessControl"
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tessEvalShader <- compileShaderSource TessEvaluationShader tessEvalSource
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checkError "compile TessEval"
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fragmentShader <- compileShaderSource FragmentShader fragmentSource
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checkError "compile Frag"
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program <- createProgramUsing [vertexShader, tessControlShader, tessEvalShader, fragmentShader]
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checkError "compile Program"
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currentProgram $= Just program
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projectionMatrixIndex <- get (uniformLocation program "ProjectionMatrix")
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checkError "projMat"
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viewMatrixIndex <- get (uniformLocation program "ViewMatrix")
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checkError "viewMat"
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modelMatrixIndex <- get (uniformLocation program "ModelMatrix")
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checkError "modelMat"
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normalMatrixIndex <- get (uniformLocation program "NormalMatrix")
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checkError "normalMat"
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tessLevelInner <- get (uniformLocation program "TessLevelInner")
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checkError "TessLevelInner"
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tessLevelOuter <- get (uniformLocation program "TessLevelOuter")
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checkError "TessLevelOuter"
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vertexIndex <- get (attribLocation program "Position")
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vertexAttribArray vertexIndex $= Enabled
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checkError "vertexInd"
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normalIndex <- get (attribLocation program "Normal")
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vertexAttribArray normalIndex $= Enabled
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checkError "normalInd"
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colorIndex <- get (attribLocation program "Color")
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vertexAttribArray colorIndex $= Enabled
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checkError "colorInd"
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att <- get (activeAttribs program)
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putStrLn $ unlines $ "Attributes: ":map show att
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putStrLn $ unlines $ ["Indices: ", show (colorIndex, normalIndex, vertexIndex)]
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checkError "initShader"
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return (program, colorIndex, normalIndex, vertexIndex, projectionMatrixIndex, viewMatrixIndex, modelMatrixIndex, normalMatrixIndex, tessLevelInner, tessLevelOuter)
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{-initUIShader :: IO (
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Program -- ^ the GLSL-program
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, AttribLocation -- ^ the UI-Texture
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)
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initUIShader = do
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! vertexSource <- B.readFile uiVertexShaderFile
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! fragmentSource <- B.readFile uiFragmentShaderFile
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vertexShader <- compileShaderSource VertexShader vertexSource
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checkError "compile Vertex"
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fragmentShader <- compileShaderSource FragmentShader fragmentSource
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checkError "compile Frag"
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program <- createProgramUsing [vertexShader, fragmentShader]
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checkError "compile Program"
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att <- get (activeAttribs program)
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putStrLn $ unlines $ "Attributes: ":map show att
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putStrLn $ unlines $ ["Indices: ", show (colorIndex, normalIndex, vertexIndex)]
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checkError "initShader"
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return (program, )-}
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initRendering :: IO ()
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initRendering = do
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clearColor $= Color4 0 0 0 0
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depthFunc $= Just Less
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glCullFace gl_BACK
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checkError "initRendering"
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