1 files changed, 381 insertions, 0 deletions

diff --git a/Backend/GL/Input.hs b/Backend/GL/Input.hs
new file mode 100644
index 0000000..6d4f40f
--- /dev/null
+++ b/Backend/GL/Input.hs
@@ -0,0 +1,381 @@
+module Backend.GL.Input where
+
+import Control.Applicative
+import Control.Exception
+import Control.Monad
+import Data.ByteString.Char8 (ByteString,pack)
+import Data.IORef
+import Data.IntMap (IntMap)
+import Data.Trie (Trie)
+import Data.Trie.Convenience as T
+import Data.Vector (Vector,(//),(!))
+import Data.Word
+import Foreign
+import qualified Data.ByteString.Char8 as SB
+import qualified Data.IntMap as IM
+import qualified Data.Set as S
+import qualified Data.Map as Map
+import qualified Data.Trie as T
+import qualified Data.Vector as V
+import qualified Data.Vector.Algorithms.Intro as I
+
+import Graphics.Rendering.OpenGL.Raw.Core33
+
+import IR as IR
+import Backend.GL.Type as T
+import Backend.GL.Util
+
+import qualified IR as IR
+
+schemaFromPipeline :: IR.Pipeline -> PipelineSchema
+schemaFromPipeline a = PipelineSchema (T.fromList sl) (foldl T.unionL T.empty ul)
+  where
+    (sl,ul) = unzip [((pack n,SlotSchema p (fmap cvt (toTrie s))),toTrie u) | IR.Slot n u s p _ <- V.toList $ IR.slots a]
+    cvt a = case toStreamType a of
+        Just v  -> v
+        Nothing -> error "internal error (schemaFromPipeline)"
+
+mkUniform :: [(ByteString,InputType)] -> IO (Trie InputSetter, Trie GLUniform)
+mkUniform l = do
+    unisAndSetters <- forM l $ \(n,t) -> do
+        (uni, setter) <- mkUniformSetter t
+        return ((n,uni),(n,setter))
+    let (unis,setters) = unzip unisAndSetters
+    return (T.fromList setters, T.fromList unis)
+
+mkGLPipelineInput :: PipelineSchema -> IO GLPipelineInput
+mkGLPipelineInput sch = do
+    let sm  = T.fromList $ zip (T.keys $ T.slots sch) [0..]
+        len = T.size sm
+    (setters,unis) <- mkUniform $ T.toList $ uniforms sch
+    seed <- newIORef 0
+    slotV <- V.replicateM len $ newIORef (GLSlot IM.empty V.empty Ordered)
+    size <- newIORef (0,0)
+    ppls <- newIORef $ V.singleton Nothing
+    return $ GLPipelineInput
+        { schema        = sch
+        , slotMap       = sm
+        , slotVector    = slotV
+        , objSeed       = seed
+        , uniformSetter = setters
+        , uniformSetup  = unis
+        , screenSize    = size
+        , pipelines     = ppls
+        }
+
+-- object
+addObject :: GLPipelineInput -> ByteString -> Primitive -> Maybe (IndexStream Buffer) -> Trie (Stream Buffer) -> [ByteString] -> IO Object
+addObject input slotName prim indices attribs uniformNames = do
+    let sch = schema input
+    forM_ uniformNames $ \n -> case T.lookup n (uniforms sch) of
+        Nothing -> throw $ userError $ "Unknown uniform: " ++ show n
+        _ -> return ()
+    case T.lookup slotName (T.slots sch) of
+        Nothing -> throw $ userError $ "Unknown slot: " ++ show slotName
+        Just (SlotSchema sPrim sAttrs) -> do
+            when (sPrim /= (primitiveToFetchPrimitive prim)) $ throw $ userError $
+                "Primitive mismatch for slot (" ++ show slotName ++ ") expected " ++ show sPrim  ++ " but got " ++ show prim
+            let sType = fmap streamToStreamType attribs
+            when (sType /= sAttrs) $ throw $ userError $ unlines $ 
+                [ "Attribute stream mismatch for slot (" ++ show slotName ++ ") expected "
+                , show sAttrs
+                , " but got "
+                , show sType
+                ]
+                
+    let slotIdx = case slotName `T.lookup` slotMap input of
+            Nothing -> error "internal error (slot index)"
+            Just i  -> i
+        seed = objSeed input
+    order <- newIORef 0
+    enabled <- newIORef True
+    index <- readIORef seed
+    modifyIORef seed (1+)
+    (setters,unis) <- mkUniform [(n,t) | n <- uniformNames, let Just t = T.lookup n (uniforms sch)]
+    cmdsRef <- newIORef (V.singleton V.empty)
+    let obj = Object
+            { objSlot       = slotIdx
+            , objPrimitive  = prim
+            , objIndices    = indices
+            , objAttributes = attribs
+            , objUniSetter  = setters
+            , objUniSetup   = unis
+            , objOrder      = order
+            , objEnabled    = enabled
+            , objId         = index
+            , objCommands   = cmdsRef
+            }
+
+    modifyIORef (slotVector input ! slotIdx) $ \(GLSlot objs _ _) -> GLSlot (IM.insert index obj objs) V.empty Generate
+
+    -- generate GLObjectCommands for the new object
+    {-
+        foreach pipeline:
+            foreach realted program:
+                generate commands
+    -}
+    ppls <- readIORef $ pipelines input
+    let topUnis = uniformSetup input
+    cmds <- V.forM ppls $ \mp -> case mp of
+        Nothing -> return V.empty
+        Just p  -> do
+            Just ic <- readIORef $ glInput p
+            case icSlotMapInputToPipeline ic ! slotIdx of
+                Nothing         -> do
+                    putStrLn $ " ** slot is not used!"
+                    return V.empty   -- this slot is not used in that pipeline
+                Just pSlotIdx   -> do
+                    putStrLn "slot is used!" 
+                    --where
+                    let emptyV = V.replicate (V.length $ glPrograms p) []
+                    return $ emptyV // [(prgIdx,createObjectCommands (glTexUnitMapping p) topUnis obj (glPrograms p ! prgIdx))| prgIdx <- glSlotPrograms p ! pSlotIdx]
+    writeIORef cmdsRef cmds
+    return obj
+
+removeObject :: GLPipelineInput -> Object -> IO ()
+removeObject p obj = modifyIORef (slotVector p ! objSlot obj) $ \(GLSlot objs _ _) -> GLSlot (IM.delete (objId obj) objs) V.empty Generate
+
+enableObject :: Object -> Bool -> IO ()
+enableObject obj b = writeIORef (objEnabled obj) b
+
+setObjectOrder :: GLPipelineInput -> Object -> Int -> IO ()
+setObjectOrder p obj i = do
+    writeIORef (objOrder obj) i
+    modifyIORef (slotVector p ! objSlot obj) $ \(GLSlot objs sorted _) -> GLSlot objs sorted Reorder
+
+objectUniformSetter :: Object -> Trie InputSetter
+objectUniformSetter = objUniSetter
+
+setScreenSize :: GLPipelineInput -> Word -> Word -> IO ()
+setScreenSize p w h = writeIORef (screenSize p) (w,h)
+
+sortSlotObjects :: GLPipelineInput -> IO ()
+sortSlotObjects p = V.forM_ (slotVector p) $ \slotRef -> do
+    GLSlot objMap sortedV ord <- readIORef slotRef
+    let cmpFun (a,_) (b,_) = a `compare` b
+        doSort objs = do
+            ordObjsM <- V.thaw objs
+            I.sortBy cmpFun ordObjsM
+            ordObjs <- V.freeze ordObjsM
+            writeIORef slotRef (GLSlot objMap ordObjs Ordered)
+    case ord of
+        Ordered -> return ()
+        Generate -> do
+            objs <- V.forM (V.fromList $ IM.elems objMap) $ \obj -> do
+                ord <- readIORef $ objOrder obj
+                return (ord,obj)
+            doSort objs
+        Reorder -> do
+            objs <- V.forM sortedV $ \(_,obj) -> do
+                ord <- readIORef $ objOrder obj
+                return (ord,obj)
+            doSort objs
+
+createObjectCommands :: Trie (IORef GLint) -> Trie GLUniform -> Object -> GLProgram -> [GLObjectCommand]
+createObjectCommands texUnitMap topUnis obj prg = objUniCmds ++ objStreamCmds ++ [objDrawCmd]
+  where
+    -- object draw command
+    objDrawCmd = case objIndices obj of
+        Nothing -> GLDrawArrays prim 0 (fromIntegral count)
+        Just (IndexStream (Buffer arrs bo) arrIdx start idxCount) -> GLDrawElements prim (fromIntegral idxCount) idxType bo ptr
+          where
+            ArrayDesc arrType arrLen arrOffs arrSize = arrs ! arrIdx
+            idxType = arrayTypeToGLType arrType
+            ptr    = intPtrToPtr $! fromIntegral (arrOffs + start * sizeOfArrayType arrType)
+      where
+        objAttrs = objAttributes obj
+        prim = primitiveToGLType $ objPrimitive obj
+        count = head [c | Stream _ _ _ _ c <- T.elems objAttrs]
+
+    -- object uniform commands
+    -- texture slot setup commands
+    objUniCmds = uniCmds ++ texCmds
+      where
+        uniCmds = [GLSetUniform i u | (n,i) <- uniMap, let u = T.lookupWithDefault (topUni n) n objUnis]
+        uniMap  = T.toList $ inputUniforms prg
+        topUni n = T.lookupWithDefault (error "internal error (createObjectCommands)!") n topUnis
+        objUnis = objUniSetup obj
+        texUnis = S.toList $ inputTextureUniforms prg
+        texCmds = [ GLBindTexture (inputTypeToTextureTarget $ uniInputType u) texUnit u
+                  | n <- texUnis
+                  , let u = T.lookupWithDefault (topUni n) n objUnis
+                  , let texUnit = T.lookupWithDefault (error "internal error (createObjectCommands - Texture Unit)") n texUnitMap
+                  ]
+        uniInputType (GLUniform ty _) = ty
+
+    -- object attribute stream commands
+    objStreamCmds = [attrCmd i s | (i,name) <- T.elems attrMap, let Just s = T.lookup name objAttrs]
+      where 
+        attrMap = inputStreams prg
+        objAttrs = objAttributes obj
+        attrCmd i s = case s of
+            Stream ty (Buffer arrs bo) arrIdx start len -> case ty of
+                TWord   -> setIntAttrib 1
+                TV2U    -> setIntAttrib 2
+                TV3U    -> setIntAttrib 3
+                TV4U    -> setIntAttrib 4
+                TInt    -> setIntAttrib 1
+                TV2I    -> setIntAttrib 2
+                TV3I    -> setIntAttrib 3
+                TV4I    -> setIntAttrib 4
+                TFloat  -> setFloatAttrib 1
+                TV2F    -> setFloatAttrib 2
+                TV3F    -> setFloatAttrib 3
+                TV4F    -> setFloatAttrib 4
+                TM22F   -> setFloatAttrib 4
+                TM23F   -> setFloatAttrib 6
+                TM24F   -> setFloatAttrib 8
+                TM32F   -> setFloatAttrib 6
+                TM33F   -> setFloatAttrib 9
+                TM34F   -> setFloatAttrib 12
+                TM42F   -> setFloatAttrib 8
+                TM43F   -> setFloatAttrib 12
+                TM44F   -> setFloatAttrib 16
+              where
+                setFloatAttrib n = GLSetVertexAttribArray i bo n glType (ptr n)
+                setIntAttrib n = GLSetVertexAttribIArray i bo n glType (ptr n)
+                ArrayDesc arrType arrLen arrOffs arrSize = arrs ! arrIdx
+                glType = arrayTypeToGLType arrType
+                ptr compCnt   = intPtrToPtr $! fromIntegral (arrOffs + start * fromIntegral compCnt * sizeOfArrayType arrType)
+
+            -- constant generic attribute
+            constAttr -> GLSetVertexAttrib i constAttr
+
+nullSetter :: ByteString -> String -> a -> IO ()
+nullSetter n t _ = return () -- Prelude.putStrLn $ "WARNING: unknown uniform: " ++ SB.unpack n ++ " :: " ++ t
+
+uniformBool  :: ByteString -> Trie InputSetter -> SetterFun Bool
+uniformV2B   :: ByteString -> Trie InputSetter -> SetterFun V2B
+uniformV3B   :: ByteString -> Trie InputSetter -> SetterFun V3B
+uniformV4B   :: ByteString -> Trie InputSetter -> SetterFun V4B
+
+uniformWord  :: ByteString -> Trie InputSetter -> SetterFun Word32
+uniformV2U   :: ByteString -> Trie InputSetter -> SetterFun V2U
+uniformV3U   :: ByteString -> Trie InputSetter -> SetterFun V3U
+uniformV4U   :: ByteString -> Trie InputSetter -> SetterFun V4U
+
+uniformInt   :: ByteString -> Trie InputSetter -> SetterFun Int32
+uniformV2I   :: ByteString -> Trie InputSetter -> SetterFun V2I
+uniformV3I   :: ByteString -> Trie InputSetter -> SetterFun V3I
+uniformV4I   :: ByteString -> Trie InputSetter -> SetterFun V4I
+
+uniformFloat :: ByteString -> Trie InputSetter -> SetterFun Float
+uniformV2F   :: ByteString -> Trie InputSetter -> SetterFun V2F
+uniformV3F   :: ByteString -> Trie InputSetter -> SetterFun V3F
+uniformV4F   :: ByteString -> Trie InputSetter -> SetterFun V4F
+
+uniformM22F   :: ByteString -> Trie InputSetter -> SetterFun M22F
+uniformM23F   :: ByteString -> Trie InputSetter -> SetterFun M23F
+uniformM24F   :: ByteString -> Trie InputSetter -> SetterFun M24F
+uniformM32F   :: ByteString -> Trie InputSetter -> SetterFun M32F
+uniformM33F   :: ByteString -> Trie InputSetter -> SetterFun M33F
+uniformM34F   :: ByteString -> Trie InputSetter -> SetterFun M34F
+uniformM42F   :: ByteString -> Trie InputSetter -> SetterFun M42F
+uniformM43F   :: ByteString -> Trie InputSetter -> SetterFun M43F
+uniformM44F   :: ByteString -> Trie InputSetter -> SetterFun M44F
+
+uniformFTexture2D   :: ByteString -> Trie InputSetter -> SetterFun TextureData
+
+uniformBool n is = case T.lookup n is of
+    Just (SBool fun)    -> fun
+    _   -> nullSetter n "Bool"
+
+uniformV2B n is = case T.lookup n is of
+    Just (SV2B fun)    -> fun
+    _   -> nullSetter n "V2B"
+
+uniformV3B n is = case T.lookup n is of
+    Just (SV3B fun)    -> fun
+    _   -> nullSetter n "V3B"
+
+uniformV4B n is = case T.lookup n is of
+    Just (SV4B fun)    -> fun
+    _   -> nullSetter n "V4B"
+
+uniformWord n is = case T.lookup n is of
+    Just (SWord fun)    -> fun
+    _   -> nullSetter n "Word"
+
+uniformV2U n is = case T.lookup n is of
+    Just (SV2U fun)    -> fun
+    _   -> nullSetter n "V2U"
+
+uniformV3U n is = case T.lookup n is of
+    Just (SV3U fun)    -> fun
+    _   -> nullSetter n "V3U"
+
+uniformV4U n is = case T.lookup n is of
+    Just (SV4U fun)    -> fun
+    _   -> nullSetter n "V4U"
+
+uniformInt n is = case T.lookup n is of
+    Just (SInt fun)    -> fun
+    _   -> nullSetter n "Int"
+
+uniformV2I n is = case T.lookup n is of
+    Just (SV2I fun)    -> fun
+    _   -> nullSetter n "V2I"
+
+uniformV3I n is = case T.lookup n is of
+    Just (SV3I fun)    -> fun
+    _   -> nullSetter n "V3I"
+
+uniformV4I n is = case T.lookup n is of
+    Just (SV4I fun)    -> fun
+    _   -> nullSetter n "V4I"
+
+uniformFloat n is = case T.lookup n is of
+    Just (SFloat fun)    -> fun
+    _   -> nullSetter n "Float"
+
+uniformV2F n is = case T.lookup n is of
+    Just (SV2F fun)    -> fun
+    _   -> nullSetter n "V2F"
+
+uniformV3F n is = case T.lookup n is of
+    Just (SV3F fun)    -> fun
+    _   -> nullSetter n "V3F"
+
+uniformV4F n is = case T.lookup n is of
+    Just (SV4F fun)    -> fun
+    _   -> nullSetter n "V4F"
+
+uniformM22F n is = case T.lookup n is of
+    Just (SM22F fun)    -> fun
+    _   -> nullSetter n "M22F"
+
+uniformM23F n is = case T.lookup n is of
+    Just (SM23F fun)    -> fun
+    _   -> nullSetter n "M23F"
+
+uniformM24F n is = case T.lookup n is of
+    Just (SM24F fun)    -> fun
+    _   -> nullSetter n "M24F"
+
+uniformM32F n is = case T.lookup n is of
+    Just (SM32F fun)    -> fun
+    _   -> nullSetter n "M32F"
+
+uniformM33F n is = case T.lookup n is of
+    Just (SM33F fun)    -> fun
+    _   -> nullSetter n "M33F"
+
+uniformM34F n is = case T.lookup n is of
+    Just (SM34F fun)    -> fun
+    _   -> nullSetter n "M34F"
+
+uniformM42F n is = case T.lookup n is of
+    Just (SM42F fun)    -> fun
+    _   -> nullSetter n "M42F"
+
+uniformM43F n is = case T.lookup n is of
+    Just (SM43F fun)    -> fun
+    _   -> nullSetter n "M43F"
+
+uniformM44F n is = case T.lookup n is of
+    Just (SM44F fun)    -> fun
+    _   -> nullSetter n "M44F"
+
+uniformFTexture2D n is = case T.lookup n is of
+    Just (SFTexture2D fun)    -> fun
+    _   -> nullSetter n "FTexture2D"