some final helper method overload additions

PortableGL/GL20ConvenienceHelpers.cs

@@ -60,6 +60,27 @@ namespace PortableGL
 			return texture;
 		}
 
+		public bool glGetBoolean(int pname)
+		{
+			bool parameter = false;
+			glGetBooleanv(pname, ref parameter);
+			return parameter;
+		}
+
+		public float glGetFloat(int pname)
+		{
+			float parameter = 0.0f;
+			glGetFloatv(pname, ref parameter);
+			return parameter;
+		}
+
+		public int glGetInteger(int pname)
+		{
+			int parameter = 0;
+			glGetIntegerv(pname, ref parameter);
+			return parameter;
+		}
+
 		public string glGetActiveAttrib(int program, int index, out int size, out int type)
 		{
 			int length = glGetProgramiv(program, GL_ACTIVE_ATTRIBUTE_MAX_LENGTH);

PortableGL/GL20Helpers.cs

@@ -187,6 +187,14 @@ namespace PortableGL
 			}
 		}
 
+		public unsafe void glGetBooleanv(int pname, ref bool parameters)
+		{
+			fixed (void *ptr = &parameters)
+			{
+				glGetBooleanv(pname, new IntPtr((long)ptr));
+			}
+		}
+
 		public unsafe void glGetFloatv(int pname, float[] parameters)
 		{
 			fixed (void *ptr = parameters)
@@ -211,6 +219,14 @@ namespace PortableGL
 			}
 		}
 
+		public unsafe void glGetIntegerv(int pname, ref int parameters)
+		{
+			fixed (void *ptr = &parameters)
+			{
+				glGetIntegerv(pname, new IntPtr((long)ptr));
+			}
+		}
+
 		public unsafe void glGetActiveAttrib(int program, int index, int bufSize, out int length, out int size, out int type, StringBuilder name)
 		{
 			fixed (int* lengthPtr = &length,