[Bf-blender-cvs] [ad773ec69a2] temp-lanpr-cleanup2: Fix T71379: Even edge slide shows random points on screen

[Campbell Barton]

Commit: ad773ec69a29a671bd3c8a4d36454c1bb7d5f611
Author: Campbell Barton
Date:   Sat Nov 9 09:58:06 2019 +1100
Branches: temp-lanpr-cleanup2
https://developer.blender.org/rBad773ec69a29a671bd3c8a4d36454c1bb7d5f611

Fix T71379: Even edge slide shows random points on screen

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

M	source/blender/editors/transform/transform.c

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

diff --git a/source/blender/editors/transform/transform.c b/source/blender/editors/transform/transform.c
index 9f53c38c403..dd43e487d92 100644
--- a/source/blender/editors/transform/transform.c
+++ b/source/blender/editors/transform/transform.c
@@ -7576,20 +7576,27 @@ static void drawEdgeSlide(TransInfo *t)
         }
         immEnd();
 
-        immUniformThemeColorShadeAlpha(TH_SELECT, -30, alpha_shade);
-        GPU_point_size(ctrl_size);
-        immBegin(GPU_PRIM_POINTS, 1);
-        if (slp->flipped) {
-          if (curr_sv->v_side[1]) {
-            immVertex3fv(pos, curr_sv->v_side[1]->co);
+        {
+          float *co_test = NULL;
+          if (slp->flipped) {
+            if (curr_sv->v_side[1]) {
+              co_test = curr_sv->v_side[1]->co;
+            }
           }
-        }
-        else {
-          if (curr_sv->v_side[0]) {
-            immVertex3fv(pos, curr_sv->v_side[0]->co);
+          else {
+            if (curr_sv->v_side[0]) {
+              co_test = curr_sv->v_side[0]->co;
+            }
+          }
+
+          if (co_test != NULL) {
+            immUniformThemeColorShadeAlpha(TH_SELECT, -30, alpha_shade);
+            GPU_point_size(ctrl_size);
+            immBegin(GPU_PRIM_POINTS, 1);
+            immVertex3fv(pos, co_test);
+            immEnd();
           }
         }
-        immEnd();
 
         immUniformThemeColorShadeAlpha(TH_SELECT, 255, alpha_shade);
         GPU_point_size(guide_size);