[Bf-blender-cvs] [a6eb1bbf575] greasepencil-object: GP: Add offset over surface

[Antonioya]

Commit: a6eb1bbf5753c8b77bf70bda6239160f74fc5ad1
Author: Antonioya
Date:   Sun Dec 9 09:41:23 2018 +0100
Branches: greasepencil-object
https://developer.blender.org/rBa6eb1bbf5753c8b77bf70bda6239160f74fc5ad1

GP: Add offset over surface

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

M	source/blender/editors/gpencil/gpencil_primitive.c

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

diff --git a/source/blender/editors/gpencil/gpencil_primitive.c b/source/blender/editors/gpencil/gpencil_primitive.c
index 67d7d76d52f..58f744349ae 100644
--- a/source/blender/editors/gpencil/gpencil_primitive.c
+++ b/source/blender/editors/gpencil/gpencil_primitive.c
@@ -660,6 +660,11 @@ static void gp_primitive_update_strokes(bContext *C, tGPDprimitive *tgpi)
 		gpd->runtime.sbuffer_size++;
 
 		/* convert screen-coordinates to 3D coordinates */
+		/* add small offset to keep stroke over the surface */
+		if ((depth_arr) && (gpd->zdepth_offset > 0.0f)) {
+			depth_arr[i] *= (1.0f - gpd->zdepth_offset);
+		}
+
 		gp_stroke_convertcoords_tpoint(
 			tgpi->scene, tgpi->ar, tgpi->ob, tgpi->gpl,
 			p2d, depth_arr ? depth_arr + i : NULL,