GPencil: glow fx, add threshold value color mode

This patch adds a threshold value to the glow effect in color mode.
Currently, the threshold is hardcoded to 5%.
You can select a color and specify a higher threshold to include
similar colors in the effect.

Note: depends on D10670

Reviewed By: #grease_pencil, pepeland

Differential Revision: https://developer.blender.org/D10672

1 files changed, 3 insertions, 4 deletions

diff --git a/source/blender/shader_fx/intern/FX_shader_glow.c b/source/blender/shader_fx/intern/FX_shader_glow.c
index 30eaa35a049..fc75771cd62 100644
--- a/source/blender/shader_fx/intern/FX_shader_glow.c
+++ b/source/blender/shader_fx/intern/FX_shader_glow.c
@@ -71,12 +71,11 @@ static void panel_draw(const bContext *UNUSED(C), Panel *panel)
 
   uiItemR(layout, ptr, "mode", 0, NULL, ICON_NONE);
 
-  if (mode == eShaderFxGlowMode_Luminance) {
-    uiItemR(layout, ptr, "threshold", 0, NULL, ICON_NONE);
-  }
-  else {
+  uiItemR(layout, ptr, "threshold", 0, NULL, ICON_NONE);
+  if (mode == eShaderFxGlowMode_Color) {
     uiItemR(layout, ptr, "select_color", 0, NULL, ICON_NONE);
   }
+
   uiItemR(layout, ptr, "glow_color", 0, NULL, ICON_NONE);
 
   uiItemS(layout);