[Bf-blender-cvs] [81fb08ad57d] master: Fix T74290 Face Dots in front (X-ray) Visual Glitch

[Clément Foucault]

Commit: 81fb08ad57d6a71f40fa412ba14961a89cca0278
Author: Clément Foucault
Date:   Mon Jun 29 15:02:16 2020 +0200
Branches: master
https://developer.blender.org/rB81fb08ad57d6a71f40fa412ba14961a89cca0278

Fix T74290 Face Dots in front (X-ray) Visual Glitch

This is not likely to be the silver bullet but it fix the common case.

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M	source/blender/draw/engines/overlay/shaders/edit_mesh_vert.glsl

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diff --git a/source/blender/draw/engines/overlay/shaders/edit_mesh_vert.glsl b/source/blender/draw/engines/overlay/shaders/edit_mesh_vert.glsl
index 203f6cb1901..2cefab56722 100644
--- a/source/blender/draw/engines/overlay/shaders/edit_mesh_vert.glsl
+++ b/source/blender/draw/engines/overlay/shaders/edit_mesh_vert.glsl
@@ -83,7 +83,7 @@ void main()
   finalColor = EDIT_MESH_facedot_color(norAndFlag.w);
 
   /* Bias Facedot Z position in clipspace. */
-  gl_Position.z -= 0.00035;
+  gl_Position.z -= (ProjectionMatrix[3][3] == 0.0) ? 0.00035 : 1e-6;
   gl_PointSize = sizeFaceDot;
 
   bool occluded = test_occlusion();