refactoring

resources/shaders/default_env.vertex

@@ -0,0 +1,12 @@
+attribute vec3 vPosition;
+
+uniform mat4 ProjectionModelViewMatrix;
+
+varying vec3 dir;
+
+void main(){
+	vec4 realVertexPos = vec4(vPosition.xyz, 1.0);
+	gl_Position = ProjectionModelViewMatrix * realVertexPos;
+
+	dir = vPosition;
+}