Added shadow maps

resources/shaders/shadow_depth.vertex

@@ -0,0 +1,9 @@
+attribute vec3 vPosition;
+attribute vec2 vTexCoord;
+
+uniform mat4 ProjectionModelViewMatrix;
+
+void main()
+{
+	gl_Position = ProjectionModelViewMatrix * vec4(vPosition, 1.0);
+}