{-# LANGUAGE OverloadedStrings, PackageImports, MonadComprehensions #-} module SampleIR where import "GLFW-b" Graphics.UI.GLFW as GLFW import Data.Monoid import Control.Monad import Control.Applicative import Data.Vect import qualified Data.Trie as T import qualified Data.Vector.Storable as SV import qualified Data.Vector as V import Text.Show.Pretty hiding (Float) import Backend.GL as GL import Backend.GL.Mesh import IR as IR import Linear as IR import System.Environment import Driver -- Our vertices. Tree consecutive floats give a 3D vertex; Three consecutive vertices give a triangle. -- A cube has 6 faces with 2 triangles each, so this makes 6*2=12 triangles, and 12*3 vertices g_vertex_buffer_data = [ ( 1.0, 1.0,-1.0) , ( 1.0,-1.0,-1.0) , (-1.0,-1.0,-1.0) , ( 1.0, 1.0,-1.0) , (-1.0,-1.0,-1.0) , (-1.0, 1.0,-1.0) , ( 1.0, 1.0,-1.0) , ( 1.0, 1.0, 1.0) , ( 1.0,-1.0, 1.0) , ( 1.0, 1.0,-1.0) , ( 1.0,-1.0, 1.0) , ( 1.0,-1.0,-1.0) , ( 1.0, 1.0, 1.0) , (-1.0,-1.0, 1.0) , ( 1.0,-1.0, 1.0) , ( 1.0, 1.0, 1.0) , (-1.0, 1.0, 1.0) , (-1.0,-1.0, 1.0) , (-1.0, 1.0, 1.0) , (-1.0,-1.0,-1.0) , (-1.0,-1.0, 1.0) , (-1.0, 1.0, 1.0) , (-1.0, 1.0,-1.0) , (-1.0,-1.0,-1.0) , ( 1.0, 1.0,-1.0) , (-1.0, 1.0,-1.0) , (-1.0, 1.0, 1.0) , ( 1.0, 1.0,-1.0) , (-1.0, 1.0, 1.0) , ( 1.0, 1.0, 1.0) , ( 1.0, 1.0,-1.0) , ( 1.0, 1.0, 1.0) , (-1.0, 1.0, 1.0) , ( 1.0, 1.0,-1.0) , (-1.0, 1.0, 1.0) , (-1.0, 1.0,-1.0) ] -- Two UV coordinatesfor each vertex. They were created with Blender. g_uv_buffer_data = [ (0.0, 0.0) , (0.0, 1.0) , (1.0, 1.0) , (0.0, 0.0) , (1.0, 1.0) , (1.0, 0.0) , (0.0, 0.0) , (1.0, 0.0) , (1.0, 1.0) , (0.0, 0.0) , (1.0, 1.0) , (0.0, 1.0) , (1.0, 0.0) , (0.0, 1.0) , (1.0, 1.0) , (1.0, 0.0) , (0.0, 0.0) , (0.0, 1.0) , (0.0, 0.0) , (1.0, 1.0) , (0.0, 1.0) , (0.0, 0.0) , (1.0, 0.0) , (1.0, 1.0) , (0.0, 0.0) , (1.0, 0.0) , (1.0, 1.0) , (0.0, 0.0) , (1.0, 1.0) , (0.0, 1.0) , (0.0, 0.0) , (0.0, 1.0) , (1.0, 1.0) , (0.0, 0.0) , (1.0, 1.0) , (1.0, 0.0) ] myCube :: Mesh myCube = Mesh { mAttributes = T.fromList [ ("position4", A_V4F $ SV.fromList [V4 x y z 1 | (x,y,z) <- g_vertex_buffer_data]) , ("vertexUV", A_V2F $ SV.fromList [V2 u v | (u,v) <- g_uv_buffer_data]) ] , mPrimitive = P_Triangles , mGPUData = Nothing } main :: IO () main = do win <- initWindow "LambdaCube 3D DSL Sample" 1024 768 let keyIsPressed k = fmap (==KeyState'Pressed) $ getKey win k n <- getArgs let srcName = case n of [fn] -> fn _ -> "gfx03" let inputSchema = PipelineSchema { GL.slots = T.fromList [("stream",SlotSchema Triangles $ T.fromList [("position",TV3F),("normal",TV3F),("UVTex",TV2F)]) ,("stream4",SlotSchema Triangles $ T.fromList [("position4",TV4F),("vertexUV",TV2F)]) ] , uniforms = T.fromList [("MVP",M44F),("MVP2",M44F),("Time",Float)] } pplInput <- mkGLPipelineInput inputSchema gpuCube <- compileMesh myCube gpuMonkey <- loadMesh "Monkey.lcmesh" addMesh pplInput "stream4" gpuCube [] addMesh pplInput "stream" gpuMonkey [] let setup = do let sn = ExpN srcName pplRes <- compileMain (ioFetch ["."]) OpenGL33 undefined sn case pplRes of (Left err,a) -> putStrLn ("error: " ++ show err) >> return Nothing (Right (ppl,a),b) -> do putStrLn $ ppShow ppl --print [a,b] renderer <- allocPipeline ppl setPipelineInput renderer (Just pplInput) sortSlotObjects pplInput putStrLn "reloaded" return $ Just renderer let cm' = fromProjective (lookat (Vec3 4 0.5 (-0.6)) (Vec3 0 0 0) (Vec3 0 1 0)) cm = fromProjective (lookat (Vec3 3 1.3 0.3) (Vec3 0 0 0) (Vec3 0 1 0)) loop renderer = do (w,h) <- getWindowSize win let uniformMap = uniformSetter pplInput texture = uniformFTexture2D "myTextureSampler" uniformMap mvp = uniformM44F "MVP" uniformMap mvp' = uniformM44F "MVP2" uniformMap pm = perspective 0.1 100 (pi/4) (fromIntegral w / fromIntegral h) time = uniformFloat "Time" uniformMap setScreenSize pplInput (fromIntegral w) (fromIntegral h) Just t <- getTime let angle = pi / 24 * realToFrac t mm = fromProjective $ rotationEuler $ Vec3 angle 0 0 mvp $! mat4ToM44F $! mm .*. cm .*. pm mvp' $! mat4ToM44F $! mm .*. cm' .*. pm time $ realToFrac t renderPipeline renderer swapBuffers win >> pollEvents k <- keyIsPressed Key'Escape reload <- keyIsPressed Key'R rend' <- if not reload then return renderer else do r <- setup case r of Nothing -> return renderer Just a -> do disposePipeline renderer return a when k $ disposePipeline rend' unless k $ loop rend' r <- setup case r of Just a -> loop a Nothing -> return () destroyWindow win terminate vec4ToV4F :: Vec4 -> V4F vec4ToV4F (Vec4 x y z w) = V4 x y z w mat4ToM44F :: Mat4 -> M44F mat4ToM44F (Mat4 a b c d) = V4 (vec4ToV4F a) (vec4ToV4F b) (vec4ToV4F c) (vec4ToV4F d) initWindow :: String -> Int -> Int -> IO Window initWindow title width height = do GLFW.init defaultWindowHints mapM_ windowHint [ WindowHint'ContextVersionMajor 3 , WindowHint'ContextVersionMinor 3 , WindowHint'OpenGLProfile OpenGLProfile'Core , WindowHint'OpenGLForwardCompat True ] Just win <- createWindow width height title Nothing Nothing makeContextCurrent $ Just win return win -- | Perspective transformation matrix in row major order. perspective :: Float -- ^ Near plane clipping distance (always positive). -> Float -- ^ Far plane clipping distance (always positive). -> Float -- ^ Field of view of the y axis, in radians. -> Float -- ^ Aspect ratio, i.e. screen's width\/height. -> Mat4 perspective n f fovy aspect = transpose $ Mat4 (Vec4 (2*n/(r-l)) 0 (-(r+l)/(r-l)) 0) (Vec4 0 (2*n/(t-b)) ((t+b)/(t-b)) 0) (Vec4 0 0 (-(f+n)/(f-n)) (-2*f*n/(f-n))) (Vec4 0 0 (-1) 0) where t = n*tan(fovy/2) b = -t r = aspect*t l = -r -- | Pure orientation matrix defined by Euler angles. rotationEuler :: Vec3 -> Proj4 rotationEuler (Vec3 a b c) = orthogonal $ toOrthoUnsafe $ rotMatrixY a .*. rotMatrixX b .*. rotMatrixZ c -- | Camera transformation matrix. lookat :: Vec3 -- ^ Camera position. -> Vec3 -- ^ Target position. -> Vec3 -- ^ Upward direction. -> Proj4 lookat pos target up = translateBefore4 (neg pos) (orthogonal $ toOrthoUnsafe r) where w = normalize $ pos &- target u = normalize $ up &^ w v = w &^ u r = transpose $ Mat3 u v w