# HG changeset patch
# User Rik <rik@octave.org>
# Date 1398276090 25200
# Node ID 652d9ed6f88d75847faf9e3ea022d0c07e121a59
# Parent  900b524d907279103bf81d2edf6eaaeb2d509b84
Fix printing of axis grid lines above/below line objects based on "layer".

* gl2ps-renderer.cc (draw): For 2D plots, use GL2PS_SIMPLE_SORT for Z-depth
sorting rather than GL2PS_NO_SORT which does no calculation whatsoever.

diff -r 900b524d9072 -r 652d9ed6f88d libinterp/corefcn/gl2ps-renderer.cc
--- a/libinterp/corefcn/gl2ps-renderer.cc	Sat Apr 19 09:28:20 2014 -0700
+++ b/libinterp/corefcn/gl2ps-renderer.cc	Wed Apr 23 11:01:30 2014 -0700
@@ -53,8 +53,8 @@
       GLint gl2ps_term;
       if (term.find ("eps") != std::string::npos) gl2ps_term = GL2PS_EPS;
       else if (term.find ("pdf") != std::string::npos) gl2ps_term = GL2PS_PDF;
+      else if (term.find ("ps") != std::string::npos) gl2ps_term = GL2PS_PS;
       else if (term.find ("svg") != std::string::npos) gl2ps_term = GL2PS_SVG;
-      else if (term.find ("ps") != std::string::npos) gl2ps_term = GL2PS_PS;
       else if (term.find ("pgf") != std::string::npos) gl2ps_term = GL2PS_PGF;
       else if (term.find ("tex") != std::string::npos) gl2ps_term = GL2PS_TEX;
       else
@@ -68,7 +68,9 @@
 
       // Default sort order optimizes for 3D plots
       GLint gl2ps_sort = GL2PS_BSP_SORT;
-      if (term.find ("is2D") != std::string::npos) gl2ps_sort = GL2PS_NO_SORT;
+      // For 2D plots we can use a simpler Z-depth sorting algorithm
+      if (term.find ("is2D") != std::string::npos)
+        gl2ps_sort = GL2PS_SIMPLE_SORT;
 
       while (state == GL2PS_OVERFLOW)
         {