[Bf-blender-cvs] [575d3dd] master: Fix T40231: Crash with matcaps

[Campbell Barton]

Commit: 575d3dd5baf5786eacc9a0fc85cb48924ee65af3
Author: Campbell Barton
Date:   Sat May 17 14:48:10 2014 +1000
https://developer.blender.org/rB575d3dd5baf5786eacc9a0fc85cb48924ee65af3

Fix T40231: Crash with matcaps

===================================================================

M       source/blender/blenkernel/intern/cdderivedmesh.c

===================================================================

diff --git a/source/blender/blenkernel/intern/cdderivedmesh.c 
b/source/blender/blenkernel/intern/cdderivedmesh.c
index ba8fe83..9df527e 100644
--- a/source/blender/blenkernel/intern/cdderivedmesh.c
+++ b/source/blender/blenkernel/intern/cdderivedmesh.c
@@ -575,11 +575,16 @@ static void cdDM_drawFacesSolid(DerivedMesh *dm,
                        new_glmode = mface->v4 ? GL_QUADS : GL_TRIANGLES;
                        new_matnr = mface->mat_nr + 1;
                        new_shademodel = (lnors || (mface->flag & ME_SMOOTH)) ? 
GL_SMOOTH : GL_FLAT;
-                       
-                       if (new_glmode != glmode || new_matnr != matnr || 
new_shademodel != shademodel) {
+
+
+                       if ((new_glmode != glmode) || (new_shademodel != 
shademodel) ||
+                           (setMaterial && (new_matnr != matnr)))
+                       {
                                glEnd();
 
-                               drawCurrentMat = setMaterial(matnr = new_matnr, 
NULL);
+                               if (setMaterial) {
+                                       drawCurrentMat = setMaterial(matnr = 
new_matnr, NULL);
+                               }
 
                                glShadeModel(shademodel = new_shademodel);
                                glBegin(glmode = new_glmode);

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