diff --git a/src/Language/GLSL.hs b/src/Language/GLSL.hs
index b61dfe0..24338b8 100644
--- a/src/Language/GLSL.hs
+++ b/src/Language/GLSL.hs
@@ -81,6 +81,10 @@ instance GLSLExpression Expression where
         " = " <>
         (toGLSLText variable1) <>
         ";\n"
+  toGLSLText
+    (DangerousExpression text) =
+      text <>
+      "\n"
 
 instance GLSLExpression RequestedGLVersion where
   toGLSLText i = show i
@@ -91,6 +95,7 @@ instance GLSLExpression RequestedGLType where
 instance GLSLExpression ParameterQualifier where
   toGLSLText In = "in"
   toGLSLText Out = "out"
+  toGLSLText Uniform = "uniform"
 
 instance GLSLExpression Variable where
   toGLSLText GL_POSITION = "gl_Position"
@@ -98,6 +103,9 @@ instance GLSLExpression Variable where
 
 instance GLSLExpression GLSLType where
   toGLSLText (GLSLVec4 _) = "vec4"
+  toGLSLText (GLSLVec3 _) = "vec3"
+  toGLSLText (GLSLVec2 _) = "vec2"
+  toGLSLText (GLSLMat4 _) = "mat4"
   toGLSLText GLSLFloat = "float"
 
 -- TYPES --
@@ -116,6 +124,7 @@ data RequestedGLType
 data ParameterQualifier
   = In
   | Out
+  | Uniform
   deriving (Eq, Show)
 
 data LayoutQualifier
@@ -135,6 +144,9 @@ data Variable
 data GLSLType
   = GLSLFloat
   | GLSLVec4 GLSLType
+  | GLSLVec3 GLSLType
+  | GLSLVec2 GLSLType
+  | GLSLMat4 GLSLType
   deriving (Eq, Show)
 
 -- expressions
@@ -153,6 +165,8 @@ data Expression
   | VariableAssignment
       Variable
       Variable
+  | DangerousExpression
+      Text
   deriving Show
 
 -- errors