correct example, add TODO in GLSL.hs, add export generateGLSL

src/Language/GLSL.hs

@@ -13,10 +13,16 @@ module Language.GLSL
   , VariableName
   , Variable(..)
   , GLSLType(..)
+  , generateGLSL
   , generateCheckedGLSL
   )
 where
 
+-- TODO
+--
+-- -[ ] Add support for multiple shaders in sequence
+-- -[ ] Add check if the previous shader output the next shader's inputs
+
 -- IMPORTS --
 
 import Relude
@@ -29,7 +35,7 @@ class GLSLExpression a where
 
 instance GLSLExpression Program where
   toGLSLText expressions =
-    foldr ((<>)) "}" $ map (toGLSLText) expressions
+    foldr ((<>)) "}\n" $ map (toGLSLText) expressions
 
 instance GLSLExpression Expression where
   toGLSLText
@@ -87,7 +93,7 @@ instance GLSLExpression ParameterQualifier where
   toGLSLText Out = "out"
 
 instance GLSLExpression Variable where
-  toGLSLText GL_POSITION = "gl_position"
+  toGLSLText GL_POSITION = "gl_Position"
   toGLSLText (Variable name _) = name
 
 instance GLSLExpression GLSLType where

src/Language/GLSL/Examples.hs

@@ -24,10 +24,10 @@ main = do
 fragShader :: Program
 fragShader =
   [ VersionDeclaration 450 Core
-  , VariableDeclaration Nothing In fragColorIn
-  , VariableDeclaration Nothing Out fragColorOut
+  , VariableDeclaration Nothing In fragColorOut
+  , VariableDeclaration Nothing Out fragColor
   , MainStart
-  , VariableAssignment fragColorOut fragColorIn
+  , VariableAssignment fragColor fragColorOut
   ]
 
 vertShader :: Program
@@ -41,7 +41,7 @@ vertShader =
   , VariableAssignment fragColorOut vertexColor
   ]
 
-fragColorIn = Variable "fragColorIn" $ GLSLVec4 GLSLFloat
+fragColor = Variable "fragColor" $ GLSLVec4 GLSLFloat
 fragColorOut = Variable "fragColorOut" $ GLSLVec4 GLSLFloat
 vertexPosition = Variable "vertexPosition" $ GLSLVec4 GLSLFloat
 vertexColor = Variable "vertexColor" $ GLSLVec4 GLSLFloat