works now

.plan.nix/affection.nix

@@ -59,13 +59,6 @@ in { system, compiler, flags, pkgs, hsPkgs, pkgconfPkgs, ... }:
       description = "This package contains Affection, a simple game engine\nwritten in Haskell using SDL.\nThis Engine is still work in progress and even minor\nversion bumps may contain breaking api changes.";
       buildType = "Simple";
       isLocal = true;
-      detailLevel = "FullDetails";
-      licenseFiles = [ "LICENSE" ];
-      dataDir = "";
-      dataFiles = [];
-      extraSrcFiles = [ "ChangeLog.md" ];
-      extraTmpFiles = [];
-      extraDocFiles = [];
       };
     components = {
       "library" = {
@@ -87,28 +80,6 @@ in { system, compiler, flags, pkgs, hsPkgs, pkgconfPkgs, ... }:
           (hsPkgs."vector" or (buildDepError "vector"))
           ];
         buildable = true;
-        modules = [
-          "Affection"
-          "Affection/Logging"
-          "Affection/Types"
-          "Affection/StateMachine"
-          "Affection/Util"
-          "Affection/MessageBus"
-          "Affection/MessageBus/Class"
-          "Affection/MessageBus/Message"
-          "Affection/MessageBus/Message/Class"
-          "Affection/MessageBus/Message/WindowMessage"
-          "Affection/MessageBus/Message/KeyboardMessage"
-          "Affection/MessageBus/Message/MouseMessage"
-          "Affection/MessageBus/Message/JoystickMessage"
-          "Affection/Subsystems"
-          "Affection/Subsystems/Class"
-          "Affection/Subsystems/AffectionWindow"
-          "Affection/Subsystems/AffectionKeyboard"
-          "Affection/Subsystems/AffectionMouse"
-          "Affection/Subsystems/AffectionJoystick"
-          ];
-        hsSourceDirs = [ "src" ];
         };
       exes = {
         "example00" = {
@@ -119,8 +90,6 @@ in { system, compiler, flags, pkgs, hsPkgs, pkgconfPkgs, ... }:
             (hsPkgs."stm" or (buildDepError "stm"))
             ];
           buildable = if flags.examples then true else false;
-          hsSourceDirs = [ "examples/example00" ];
-          mainPath = [ "Main.hs" ] ++ [ "" ];
           };
         "example01" = {
           depends = (pkgs.lib).optionals (flags.examples) [
@@ -137,9 +106,6 @@ in { system, compiler, flags, pkgs, hsPkgs, pkgconfPkgs, ... }:
             (hsPkgs."deepseq" or (buildDepError "deepseq"))
             ];
           buildable = if flags.examples then true else false;
-          modules = [ "Types" ];
-          hsSourceDirs = [ "examples/example01" ];
-          mainPath = [ "Main.hs" ] ++ [ "" ];
           };
         "example02" = {
           depends = (pkgs.lib).optionals (flags.examples) [
@@ -156,9 +122,6 @@ in { system, compiler, flags, pkgs, hsPkgs, pkgconfPkgs, ... }:
             (hsPkgs."deepseq" or (buildDepError "deepseq"))
             ];
           buildable = if flags.examples then true else false;
-          modules = [ "Types" ];
-          hsSourceDirs = [ "examples/example02" ];
-          mainPath = [ "Main.hs" ] ++ [ "" ];
           };
         };
       };

.plan.nix/canvas.nix

@@ -53,13 +53,6 @@ in { system, compiler, flags, pkgs, hsPkgs, pkgconfPkgs, ... }:
       description = "";
       buildType = "Simple";
       isLocal = true;
-      detailLevel = "FullDetails";
-      licenseFiles = [ "LICENSE" ];
-      dataDir = "";
-      dataFiles = [];
-      extraSrcFiles = [ "CHANGELOG.md" ];
-      extraTmpFiles = [];
-      extraDocFiles = [];
       };
     components = {
       exes = {
@@ -69,12 +62,15 @@ in { system, compiler, flags, pkgs, hsPkgs, pkgconfPkgs, ... }:
             (hsPkgs."affection" or (buildDepError "affection"))
             (hsPkgs."sdl2" or (buildDepError "sdl2"))
             (hsPkgs."OpenGL" or (buildDepError "OpenGL"))
+            (hsPkgs."GLUtil" or (buildDepError "GLUtil"))
             (hsPkgs."JuicyPixels" or (buildDepError "JuicyPixels"))
             (hsPkgs."JuicyPixels-extra" or (buildDepError "JuicyPixels-extra"))
+            (hsPkgs."stm" or (buildDepError "stm"))
+            (hsPkgs."containers" or (buildDepError "containers"))
+            (hsPkgs."linear" or (buildDepError "linear"))
+            (hsPkgs."bytestring" or (buildDepError "bytestring"))
             ];
           buildable = true;
-          hsSourceDirs = [ "app" ];
-          mainPath = [ "Main.hs" ];
           };
         };
       };

app/Classes/Renderable.hs

@@ -2,13 +2,28 @@
 {-# LANGUAGE AllowAmbiguousTypes #-}
 module Classes.Renderable where
 
+import qualified Graphics.Rendering.OpenGL as GL
+
+import Linear
+
 class Renderable a where
   type VertexObjects a :: *
 
   type ShaderObjects a :: *
 
-  init :: VertexObjects a -> ShaderObjects a -> a -> IO ()
+  init
+    :: VertexObjects a
+    -> ShaderObjects a
+    -> GL.TextureObject
+    -> a
+    -> IO ()
 
-  draw :: VertexObjects a -> ShaderObjects a -> a -> IO ()
+  draw
+    :: VertexObjects a
+    -> ShaderObjects a
+    -> a
+    -> IO ()
 
-  clean :: a -> IO ()
+  clean
+    :: a
+    -> IO ()

app/Main.hs

@@ -7,6 +7,7 @@ import SDL (($=))
 import qualified SDL
 
 import qualified Graphics.Rendering.OpenGL as GL
+import qualified Graphics.GLUtil as GLU
 
 import Codec.Picture
 
@@ -34,13 +35,13 @@ main =
         , SDL.defaultWindow
           { SDL.windowInitialSize = SDL.V2 1600 900
           , SDL.windowGraphicsContext = SDL.OpenGLContext SDL.defaultOpenGL
-            { SDL.glProfile = SDL.Core SDL.Normal 3 3
+            { SDL.glProfile = SDL.Core SDL.Debug 3 3
             }
           }
         )
       ]
     , initScreenMode = SDL.FullscreenDesktop
-    , preLoop = return ()
+    , preLoop = preLoopImpl
     , eventLoop = mapM_ handle
     , updateLoop = updateLoopImpl
     , drawLoop = drawLoopImpl
@@ -49,10 +50,18 @@ main =
     , canvasSize = Nothing
     }
 
+preLoopImpl :: Affection UserData ()
+preLoopImpl = liftIO $ do
+  void $ SDL.setMouseLocationMode SDL.RelativeLocation
+  -- GL.depthFunc $= Just GL.Less
+  GL.textureFilter GL.Texture2D $= ((GL.Nearest, Nothing), GL.Nearest)
+  GLU.texture2DWrap $= (GL.Repeated, GL.ClampToEdge)
+  GL.texture GL.Texture2D $= GL.Enabled
+  -- GL.frontFace $= GL.CW
+  GL.viewport $= (GL.Position 0 0, GL.Size 1920 1080)
+
 loadStateImpl :: IO UserData
 loadStateImpl = do
-  void $ SDL.setMouseLocationMode SDL.RelativeLocation
-  GL.depthFunc $= Just GL.Less
 
   subs <- Subsystems
     <$> (SubWindow <$> newTVarIO [])
@@ -73,11 +82,22 @@ updateLoopImpl dt = return ()
 
 drawLoopImpl = do
   ud@(UserData subs rassets) <- getAffection
-  let (RenderAssets sDetails@(AssetDetails svo sso sdo)) = rassets
+  let (RenderAssets sDetails@(AssetDetails svo sso sto sdo)) = rassets
   liftIO $ do
+    mapM_
+      (\ident -> do
         CR.init
           (svo :: VertexObjects Sprite)
           (sso :: ShaderObjects Sprite)
-      (head $ M.elems sdo)
+          (sto M.! ident)
-    mapM_ (draw (svo :: VertexObjects Sprite) (sso :: ShaderObjects Sprite)) (M.elems sdo)
+          (head (sdo M.! ident))
-    clean (head $ M.elems sdo)
+        mapM_ 
+          (draw
+            (svo :: VertexObjects Sprite)
+            (sso :: ShaderObjects Sprite)
+            )
+          (sdo M.! ident)
+        clean
+          (head (sdo M.! ident))
+        )
+      (M.keys sdo)

app/Renderer.hs

@@ -1,3 +1,4 @@
+{-# LANGUAGE OverloadedStrings #-}
 module Renderer where
 
 import SDL (($=))
@@ -40,14 +41,14 @@ initSpriteRenderObjects = do
     , GL.VertexArrayDescriptor 4 GL.Float 0 (plusPtr nullPtr 0)
     )
 
-  GL.bindBuffer GL.ArrayBuffer $= Nothing
+  -- GL.bindBuffer GL.ArrayBuffer $= Nothing
   GL.bindVertexArrayObject $= Nothing
 
   return (SpriteRenderObjects quadVAO quadVBO)
-  where
+
-    rawVertices :: [Float]
+rawVertices :: [Float]
-    rawVertices =
+rawVertices =
-      [ 0, 1, 0, 0
+  [ 0, 1, 0, 1
   , 1, 0, 1, 0
   , 0, 0, 0, 0
 
@@ -64,18 +65,59 @@ initSpriteShaderObjects = do
 
   return (SpriteShaderObjects shaderProgram)
 
+initSpriteTextureObjects
+  :: [(String, FilePath)]
+  -> IO (M.Map AssetId (GL.TextureObject, V2 Int))
+initSpriteTextureObjects lookupList = do
+  M.fromList <$> mapM
+    (\(name, fp) -> do
+      -- texture <- Gl.genObjectName
+      -- GL.bindBuffer GL.ArrayBuffer $= Just texture
+      -- withArray rawVertices $ \ptr ->
+      --   GL.bufferData GL.ArrayBuffer $=
+      --     ( fromIntegral $ length rawVertices * sizeof (0 :: Float)
+      --     , ptr
+      --     , GL.StaticDraw
+      --     )
+      -- GL.vertexAttribPointer (GL.AttribLocation 1) $=
+      --   ( GL.ToFloat
+      --   , GL.VertexArrayDescriptor 2 GL.Float 0 (plusPtr nullPtr 0)
+      --   )
+      ts <- loadTex fp
+      return (name, ts)
+      )
+    lookupList
+
+loadTex :: FilePath -> IO (GL.TextureObject, V2 Int)
+loadTex fp = do
+  t <- either error id <$> GLU.readTexture fp
+  img <- convertRGBA8 <$> either error id <$> readImage fp
+  let size = V2 (imageWidth img) (imageHeight img)
+  return (t, size)
+
 loadSprites :: IO (AssetDetails SpriteRenderObjects SpriteShaderObjects Sprite)
 loadSprites = do
-  rawImg <- readImage "assets/img/lynx.jpg"
+  let lookups =
-  let img = case rawImg of
+        [ ("lynx", "assets/img/lynx.png")
-        Left err -> error err
+        ]
-        Right dynImg -> convertRGBA8 dynImg
+      positions =
+        [ (V2 0 0)
+        ]
 
   vertObj <- initSpriteRenderObjects
   shadObj <- initSpriteShaderObjects
+  textObj <- initSpriteTextureObjects lookups
 
   return AssetDetails
     { adVertObj = vertObj
     , adShadObj = shadObj
-    , adDataObj = M.singleton "lynx" (Sprite (V2 0 0) img)
+    , adTextObj = M.fromList $ map (\(k, v) -> (k, fst v)) (M.assocs textObj)
+    , adDataObj = M.fromList $
+      map
+        (\(k, v) ->
+          ( k
+          , map (\pos -> Sprite pos (snd v)) positions
+          )
+          )
+        (M.assocs textObj)
     }

app/Types/Sprite.hs

@@ -25,7 +25,7 @@ data SpriteShaderObjects = SpriteShaderObjects
 
 data Sprite = Sprite
   { spritePosition :: V2 Int
-  , spriteImage    :: Image PixelRGBA8
+  , spriteSize     :: V2 Int
   }
 
 instance Renderable Sprite where
@@ -33,20 +33,34 @@ instance Renderable Sprite where
 
   type ShaderObjects Sprite = SpriteShaderObjects
 
-  init (SpriteRenderObjects vao vbo) (SpriteShaderObjects prog) _ = do
+  init
+    (SpriteRenderObjects vao vbo)
+    (SpriteShaderObjects prog)
+    texture
+    _ = do
       GL.currentProgram $= Just (GLU.program prog)
       GL.bindVertexArrayObject $= Just vao
+      GL.activeTexture $= GL.TextureUnit 0
+      GL.textureBinding GL.Texture2D $= Just texture
+      GL.clearColor $= GL.Color4 1 1 1 1
 
   draw
     (SpriteRenderObjects vao vbo)
     (SpriteShaderObjects prog)
-    (Sprite pos@(V2 px py) img) = do
+    (Sprite pos@(V2 px py) size) = do
-      let model = mkTransformation
+      let (V2 sx sy) = fmap fromIntegral size
-            (Quaternion 1 (V3 0 0 0) :: Quaternion Float)
+          model = fmap (fmap fromIntegral) $ V4
-            (fmap fromIntegral $ V3 px py 0 :: V3 Float)
+            (V4 sx 0 0 px)
-      GLU.setUniform prog "model" model
+            (V4 0 sy 0 py)
+            (V4 0 0 1 0)
+            (V4 0 0 0 1)
+            :: M44 Float
+          projection = ortho (-1920) 1920 (-1080) 1080 (-1) 1
+      putStrLn $ show model
+      GLU.setUniform prog "pm" (projection !*! model)
       GL.drawArrays GL.Triangles 0 6
 
   clean _ = do
     GL.currentProgram $= (Nothing :: Maybe GL.Program)
     GL.bindVertexArrayObject $= (Nothing :: Maybe GL.VertexArrayObject)
+    GL.texture GL.Texture2D $= GL.Disabled

app/Types/UserData.hs

@@ -4,12 +4,16 @@ module Types.UserData where
 
 import Affection
 
+import qualified Graphics.Rendering.OpenGL as GL
+
 import Control.Concurrent.STM
 
 import qualified SDL
 
 import qualified Data.Map.Strict as M
 
+import Linear
+
 import Codec.Picture
 
 -- internal imports
@@ -30,7 +34,8 @@ data RenderAssets = RenderAssets
 data Renderable dat => AssetDetails vo so dat = AssetDetails
   { adVertObj :: vo
   , adShadObj :: so
-  , adDataObj :: M.Map AssetId dat
+  , adTextObj :: M.Map AssetId GL.TextureObject
+  , adDataObj :: M.Map AssetId [dat]
   }
 
 type AssetId = String

canvas.cabal

@@ -25,6 +25,7 @@ executable canvas
                        Classes.Renderable
                        Renderer
   -- other-extensions:
+  ghc-options:         -Wall
   build-depends:       base ^>=4.12.0.0
                      , affection
                      , sdl2 ^>=2.5.0.0

default.nix

@@ -17,13 +17,35 @@ let
 
   pkgs = pkgs1 // pkgs2;
 
+  cabal-doctest = (hackage: {
+    cabal-doctest = hackage.cabal-doctest."1.0.8".revisions.default;
+  });
+  gtk2hs-buildtools = (hackage: {
+    gtk2hs-buildtools = hackage.gtk2hs-buildtools."0.13.8.0".revisions.default;
+  });
+  hashtables = (hackage: {
+    hashtables = hackage.hashtables."1.2.3.4".revisions.default;
+  });
+  alex = (hackage: {
+    alex = hackage.alex."3.2.5".revisions.default;
+  });
+  happy = (hackage: {
+    happy = hackage.happy."1.19.12".revisions.default;
+  });
+
   # Import the file you will create in the stack-to-nix or cabal-to-nix step.
   my-pkgs = import ./pkgs.nix;
 
   # Cabal projects use this:
   pkgSet = pkgs.haskell-nix.mkCabalProjectPkgSet {
     plan-pkgs = my-pkgs;
-    pkg-def-extras = [];
+    pkg-def-extras = [
+      cabal-doctest
+      gtk2hs-buildtools
+      hashtables
+      alex
+      happy
+    ];
     modules = [
       # specific package overrides would go here
       # example:

pkgs.nix

@@ -3,181 +3,79 @@
     {
       packages = {
         "void".revision = (((hackage."void")."0.7.3").revisions).default;
-        "void".flags.safe = false;
         "semigroupoids".revision = (((hackage."semigroupoids")."5.3.4").revisions).default;
-        "semigroupoids".flags.comonad = true;
-        "semigroupoids".flags.doctests = true;
-        "semigroupoids".flags.unordered-containers = true;
-        "semigroupoids".flags.distributive = true;
-        "semigroupoids".flags.tagged = true;
-        "semigroupoids".flags.containers = true;
-        "semigroupoids".flags.contravariant = true;
         "free".revision = (((hackage."free")."5.1.3").revisions).default;
         "cereal".revision = (((hackage."cereal")."0.5.8.1").revisions).default;
-        "cereal".flags.bytestring-builder = false;
         "exceptions".revision = (((hackage."exceptions")."0.10.4").revisions).default;
-        "exceptions".flags.transformers-0-4 = true;
-        "hashtables".revision = (((hackage."hashtables")."1.2.3.4").revisions).default;
-        "hashtables".flags.portable = false;
-        "hashtables".flags.detailed-profiling = false;
-        "hashtables".flags.sse42 = false;
-        "hashtables".flags.debug = false;
-        "hashtables".flags.bounds-checking = false;
-        "hashtables".flags.unsafe-tricks = true;
         "binary".revision = (((hackage."binary")."0.8.6.0").revisions).default;
         "monad-parallel".revision = (((hackage."monad-parallel")."0.7.2.3").revisions).default;
         "ghc-prim".revision = (((hackage."ghc-prim")."0.5.3").revisions).default;
         "utf8-string".revision = (((hackage."utf8-string")."1.0.1.1").revisions).default;
         "bifunctors".revision = (((hackage."bifunctors")."5.5.7").revisions).default;
-        "bifunctors".flags.semigroups = true;
-        "bifunctors".flags.tagged = true;
         "ObjectName".revision = (((hackage."ObjectName")."1.1.0.1").revisions).default;
         "stm".revision = (((hackage."stm")."2.5.0.0").revisions).default;
         "unix".revision = (((hackage."unix")."2.7.2.2").revisions).default;
         "mtl".revision = (((hackage."mtl")."2.2.2").revisions).default;
-        "linear".revision = (((hackage."linear")."1.20.9").revisions).default;
+        "linear".revision = (((hackage."linear")."1.21").revisions).default;
-        "linear".flags.template-haskell = true;
-        "linear".flags.herbie = false;
         "network-info".revision = (((hackage."network-info")."0.2.0.10").revisions).default;
         "zlib".revision = (((hackage."zlib")."0.6.2.1").revisions).default;
-        "zlib".flags.non-blocking-ffi = false;
-        "zlib".flags.pkg-config = false;
         "rts".revision = (((hackage."rts")."1.0").revisions).default;
-        "alex".revision = (((hackage."alex")."3.2.5").revisions).default;
-        "alex".flags.small_base = true;
         "clock".revision = (((hackage."clock")."0.8").revisions).default;
-        "clock".flags.llvm = false;
         "adjunctions".revision = (((hackage."adjunctions")."4.4").revisions).default;
         "cryptohash-md5".revision = (((hackage."cryptohash-md5")."0.11.100.1").revisions).default;
         "invariant".revision = (((hackage."invariant")."0.5.3").revisions).default;
         "glib".revision = (((hackage."glib")."0.13.8.0").revisions).default;
-        "glib".flags.closure_signals = true;
         "distributive".revision = (((hackage."distributive")."0.6.1").revisions).default;
-        "distributive".flags.semigroups = true;
-        "distributive".flags.tagged = true;
         "binary-orphans".revision = (((hackage."binary-orphans")."1.0.1").revisions).default;
         "OpenGLRaw".revision = (((hackage."OpenGLRaw")."3.3.4.0").revisions).default;
-        "OpenGLRaw".flags.osandroid = false;
-        "OpenGLRaw".flags.usenativewindowslibraries = true;
-        "OpenGLRaw".flags.usegles2 = true;
-        "OpenGLRaw".flags.useglxgetprocaddress = true;
         "scientific".revision = (((hackage."scientific")."0.3.6.2").revisions).default;
-        "scientific".flags.integer-simple = false;
-        "scientific".flags.bytestring-builder = false;
         "half".revision = (((hackage."half")."0.3").revisions).default;
         "parallel".revision = (((hackage."parallel")."3.2.2.0").revisions).default;
         "deepseq".revision = (((hackage."deepseq")."1.4.4.0").revisions).default;
         "random".revision = (((hackage."random")."1.1").revisions).default;
         "uuid-types".revision = (((hackage."uuid-types")."1.0.3").revisions).default;
         "semigroups".revision = (((hackage."semigroups")."0.19.1").revisions).default;
-        "semigroups".flags.bytestring = true;
-        "semigroups".flags.unordered-containers = true;
-        "semigroups".flags.text = true;
-        "semigroups".flags.tagged = true;
-        "semigroups".flags.containers = true;
-        "semigroups".flags.binary = true;
-        "semigroups".flags.hashable = true;
-        "semigroups".flags.transformers = true;
-        "semigroups".flags.deepseq = true;
-        "semigroups".flags.bytestring-builder = false;
-        "semigroups".flags.template-haskell = true;
-        "parsec".revision = (((hackage."parsec")."3.1.13.0").revisions).default;
         "directory".revision = (((hackage."directory")."1.3.3.0").revisions).default;
         "transformers-compat".revision = (((hackage."transformers-compat")."0.6.5").revisions).default;
-        "transformers-compat".flags.five = false;
-        "transformers-compat".flags.generic-deriving = true;
-        "transformers-compat".flags.two = false;
-        "transformers-compat".flags.five-three = true;
-        "transformers-compat".flags.mtl = true;
-        "transformers-compat".flags.four = false;
-        "transformers-compat".flags.three = false;
         "template-haskell".revision = (((hackage."template-haskell")."2.14.0.0").revisions).default;
         "bytes".revision = (((hackage."bytes")."0.16").revisions).default;
-        "bytes".flags.test-doctests = true;
+        "vector".revision = (((hackage."vector")."0.12.1.2").revisions).default;
-        "vector".revision = (((hackage."vector")."0.12.1.1").revisions).default;
-        "vector".flags.unsafechecks = false;
-        "vector".flags.internalchecks = false;
-        "vector".flags.wall = false;
-        "vector".flags.boundschecks = true;
         "call-stack".revision = (((hackage."call-stack")."0.2.0").revisions).default;
         "primitive".revision = (((hackage."primitive")."0.7.0.0").revisions).default;
-        "gtk2hs-buildtools".revision = (((hackage."gtk2hs-buildtools")."0.13.8.0").revisions).default;
-        "gtk2hs-buildtools".flags.closuresignals = true;
         "profunctors".revision = (((hackage."profunctors")."5.5.1").revisions).default;
         "tagged".revision = (((hackage."tagged")."0.8.6").revisions).default;
-        "tagged".flags.transformers = true;
+        "lens".revision = (((hackage."lens")."4.19").revisions).default;
-        "tagged".flags.deepseq = true;
-        "lens".revision = (((hackage."lens")."4.18.1").revisions).default;
-        "lens".flags.j = false;
-        "lens".flags.test-properties = true;
-        "lens".flags.old-inline-pragmas = false;
-        "lens".flags.test-templates = true;
-        "lens".flags.trustworthy = true;
-        "lens".flags.test-doctests = true;
-        "lens".flags.benchmark-uniplate = false;
-        "lens".flags.inlining = true;
-        "lens".flags.dump-splices = false;
-        "lens".flags.test-hunit = true;
-        "lens".flags.safe = false;
         "containers".revision = (((hackage."containers")."0.6.0.1").revisions).default;
         "integer-logarithms".revision = (((hackage."integer-logarithms")."1.0.3").revisions).default;
-        "integer-logarithms".flags.check-bounds = false;
-        "integer-logarithms".flags.integer-gmp = true;
         "reflection".revision = (((hackage."reflection")."2.1.5").revisions).default;
-        "reflection".flags.slow = false;
-        "reflection".flags.template-haskell = true;
         "OpenGL".revision = (((hackage."OpenGL")."3.0.3.0").revisions).default;
         "bytestring".revision = (((hackage."bytestring")."0.10.8.2").revisions).default;
+        "GLUtil".revision = (((hackage."GLUtil")."0.10.3").revisions).default;
         "JuicyPixels".revision = (((hackage."JuicyPixels")."3.3.4").revisions).default;
-        "JuicyPixels".flags.mmap = false;
         "cryptohash-sha1".revision = (((hackage."cryptohash-sha1")."0.11.100.1").revisions).default;
         "StateVar".revision = (((hackage."StateVar")."1.2").revisions).default;
         "contravariant".revision = (((hackage."contravariant")."1.5.2").revisions).default;
-        "contravariant".flags.semigroups = true;
-        "contravariant".flags.tagged = true;
-        "contravariant".flags.statevar = true;
         "GLURaw".revision = (((hackage."GLURaw")."2.0.0.4").revisions).default;
-        "GLURaw".flags.usenativewindowslibraries = true;
-        "type-equality".revision = (((hackage."type-equality")."1").revisions).default;
         "uuid".revision = (((hackage."uuid")."1.3.13").revisions).default;
         "text".revision = (((hackage."text")."1.2.3.1").revisions).default;
-        "Cabal".revision = (((hackage."Cabal")."2.4.0.1").revisions).default;
         "unordered-containers".revision = (((hackage."unordered-containers")."0.2.10.0").revisions).default;
-        "unordered-containers".flags.debug = false;
         "base".revision = (((hackage."base")."4.12.0.0").revisions).default;
         "comonad".revision = (((hackage."comonad")."5.0.6").revisions).default;
-        "comonad".flags.distributive = true;
-        "comonad".flags.test-doctests = true;
-        "comonad".flags.containers = true;
         "time".revision = (((hackage."time")."1.8.0.2").revisions).default;
         "transformers".revision = (((hackage."transformers")."0.5.6.2").revisions).default;
         "hashable".revision = (((hackage."hashable")."1.3.0.0").revisions).default;
-        "hashable".flags.sse2 = true;
-        "hashable".flags.integer-gmp = true;
-        "hashable".flags.sse41 = false;
-        "hashable".flags.examples = false;
         "JuicyPixels-extra".revision = (((hackage."JuicyPixels-extra")."0.4.1").revisions).default;
-        "JuicyPixels-extra".flags.dev = false;
         "transformers-base".revision = (((hackage."transformers-base")."0.4.5.2").revisions).default;
-        "transformers-base".flags.orphaninstances = true;
+        "hpp".revision = (((hackage."hpp")."0.6.1").revisions).default;
-        "happy".revision = (((hackage."happy")."1.19.12").revisions).default;
-        "happy".flags.small_base = true;
         "entropy".revision = (((hackage."entropy")."0.4.1.5").revisions).default;
-        "entropy".flags.halvm = false;
         "filepath".revision = (((hackage."filepath")."1.4.2.1").revisions).default;
         "monad-loops".revision = (((hackage."monad-loops")."0.4.3").revisions).default;
-        "monad-loops".flags.base4 = true;
-        "process".revision = (((hackage."process")."1.6.5.0").revisions).default;
         "kan-extensions".revision = (((hackage."kan-extensions")."5.2").revisions).default;
         "fixed".revision = (((hackage."fixed")."0.3").revisions).default;
         "pretty".revision = (((hackage."pretty")."1.1.3.6").revisions).default;
-        "cabal-doctest".revision = (((hackage."cabal-doctest")."1.0.8").revisions).default;
         "ghc-boot-th".revision = (((hackage."ghc-boot-th")."8.6.5").revisions).default;
         "base-orphans".revision = (((hackage."base-orphans")."0.8.2").revisions).default;
-        "sdl2".revision = (((hackage."sdl2")."2.5.0.0").revisions).default;
+        "sdl2".revision = (((hackage."sdl2")."2.5.1.0").revisions).default;
-        "sdl2".flags.no-linear = false;
-        "sdl2".flags.opengl-example = false;
-        "sdl2".flags.examples = false;
         "th-abstraction".revision = (((hackage."th-abstraction")."0.3.1.0").revisions).default;
         "array".revision = (((hackage."array")."0.5.3.0").revisions).default;
         "integer-gmp".revision = (((hackage."integer-gmp")."1.0.2.0").revisions).default;
@@ -186,26 +84,81 @@
         version = "8.6.5";
         nix-name = "ghc865";
         packages = {
+          "void" = "0.7.3";
+          "semigroupoids" = "5.3.4";
+          "free" = "5.1.3";
+          "cereal" = "0.5.8.1";
+          "exceptions" = "0.10.4";
           "binary" = "0.8.6.0";
+          "monad-parallel" = "0.7.2.3";
           "ghc-prim" = "0.5.3";
+          "utf8-string" = "1.0.1.1";
+          "bifunctors" = "5.5.7";
+          "ObjectName" = "1.1.0.1";
+          "stm" = "2.5.0.0";
           "unix" = "2.7.2.2";
           "mtl" = "2.2.2";
+          "linear" = "1.21";
+          "network-info" = "0.2.0.10";
+          "zlib" = "0.6.2.1";
           "rts" = "1.0";
+          "clock" = "0.8";
+          "adjunctions" = "4.4";
+          "cryptohash-md5" = "0.11.100.1";
+          "invariant" = "0.5.3";
+          "glib" = "0.13.8.0";
+          "distributive" = "0.6.1";
+          "binary-orphans" = "1.0.1";
+          "OpenGLRaw" = "3.3.4.0";
+          "scientific" = "0.3.6.2";
+          "half" = "0.3";
+          "parallel" = "3.2.2.0";
           "deepseq" = "1.4.4.0";
-          "parsec" = "3.1.13.0";
+          "random" = "1.1";
+          "uuid-types" = "1.0.3";
+          "semigroups" = "0.19.1";
           "directory" = "1.3.3.0";
+          "transformers-compat" = "0.6.5";
           "template-haskell" = "2.14.0.0";
+          "bytes" = "0.16";
+          "vector" = "0.12.1.2";
+          "call-stack" = "0.2.0";
+          "primitive" = "0.7.0.0";
+          "profunctors" = "5.5.1";
+          "tagged" = "0.8.6";
+          "lens" = "4.19";
           "containers" = "0.6.0.1";
+          "integer-logarithms" = "1.0.3";
+          "reflection" = "2.1.5";
+          "OpenGL" = "3.0.3.0";
           "bytestring" = "0.10.8.2";
+          "GLUtil" = "0.10.3";
+          "JuicyPixels" = "3.3.4";
+          "cryptohash-sha1" = "0.11.100.1";
+          "StateVar" = "1.2";
+          "contravariant" = "1.5.2";
+          "GLURaw" = "2.0.0.4";
+          "uuid" = "1.3.13";
           "text" = "1.2.3.1";
-          "Cabal" = "2.4.0.1";
+          "unordered-containers" = "0.2.10.0";
           "base" = "4.12.0.0";
+          "comonad" = "5.0.6";
           "time" = "1.8.0.2";
           "transformers" = "0.5.6.2";
+          "hashable" = "1.3.0.0";
+          "JuicyPixels-extra" = "0.4.1";
+          "transformers-base" = "0.4.5.2";
+          "hpp" = "0.6.1";
+          "entropy" = "0.4.1.5";
           "filepath" = "1.4.2.1";
-          "process" = "1.6.5.0";
+          "monad-loops" = "0.4.3";
+          "kan-extensions" = "5.2";
+          "fixed" = "0.3";
           "pretty" = "1.1.3.6";
           "ghc-boot-th" = "8.6.5";
+          "base-orphans" = "0.8.2";
+          "sdl2" = "2.5.1.0";
+          "th-abstraction" = "0.3.1.0";
           "array" = "0.5.3.0";
           "integer-gmp" = "1.0.2.0";
           };

shader/fragment.sl

@@ -7,6 +7,6 @@ uniform sampler2D image;
 
 void main()
 {    
-    //color = vec4(spriteColor, 1.0) * texture(image, TexCoords);
+    //color = vec4(0.0, 0.0, 0.0, 1.0) * texture2D(image, TexCoords);
-    color = texture(image, TexCoords);
+    color = texture2D(image, vec2(TexCoords.x, 1.0 - TexCoords.y));
 }

shader/vertex.sl

@@ -3,11 +3,12 @@ layout (location = 0) in vec4 vertex; // <vec2 position, vec2 texCoords>
 
 out vec2 TexCoords;
 
-uniform mat4 model;
+uniform mat4 pm;
-uniform mat4 projection;
+//uniform mat4 projection;
 
 void main()
 {
     TexCoords = vertex.zw;
-    gl_Position = projection * model * vec4(vertex.xy, 0.0, 1.0);
+    //gl_Position = projection * model * vec4(vertex.xy, 0.0, 1.0);
+    gl_Position = pm * vec4(vertex.xy, 0.0, 1.0);
 }