Fix ortho matrix compilation

Caused very large grids and slow down when in ortho mode
dgud · Oct 25, 2015 · 9f35c34 · 9f35c34
1 parent ae50191
commit 9f35c34
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/e3d/e3d_transform.erl b/e3d/e3d_transform.erl
@@ -169,7 +169,12 @@ ortho(Left, Right, Bottom, Top, Near, Far) ->
 	    O,   O, O},
     %% Do this in 3 steps to avoid inverse calculation problems
     Mat1 = scale(init(Mat0), {IDx,IDy,IDz}),
-    translate(Mat1, {-(Right+Left)*IDx, -(Top+Bottom)*IDy, -(Far+Near)*IDz}).
+    Trans = translate(identity(), {-(Right+Left)*IDx, 
+				   -(Top+Bottom)*IDy, 
+				   -(Far+Near)*IDz}),
+    mul(Trans, Mat1).
+
+
 
 %%--------------------------------------------------------------------
 %% @doc  Generates a perspective transformation