LineArt: Cached calculation for modifiers in the same stack.

This allows line art to run only once for each modifier stacks,
with an option to toggle a specific line art modifier should
use cache or re-do their own calculations.

Reviewed By: Sebastian Parborg (zeddb), Hans Goudey (HooglyBoogly)

Differential Revision: https://developer.blender.org/D11291

1 files changed, 8 insertions, 0 deletions

diff --git a/source/blender/makesrna/intern/rna_gpencil_modifier.c b/source/blender/makesrna/intern/rna_gpencil_modifier.c
index 92d65961743..e2cee2836b1 100644
--- a/source/blender/makesrna/intern/rna_gpencil_modifier.c
+++ b/source/blender/makesrna/intern/rna_gpencil_modifier.c
@@ -2930,6 +2930,14 @@ static void rna_def_modifier_gpencillineart(BlenderRNA *brna)
   RNA_def_property_ui_text(prop, "Is Baked", "This modifier has baked data");
   RNA_def_property_update(prop, 0, "rna_GpencilModifier_update");
 
+  prop = RNA_def_property(srna, "use_cache", PROP_BOOLEAN, PROP_NONE);
+  RNA_def_property_boolean_sdna(prop, NULL, "flags", LRT_GPENCIL_USE_CACHE);
+  RNA_def_property_ui_text(prop,
+                           "Use Cache",
+                           "Use cached scene data from the first line art modifier in the stack. "
+                           "Certain settings will be unavailable");
+  RNA_def_property_update(prop, 0, "rna_GpencilModifier_update");
+
   prop = RNA_def_property(srna, "thickness", PROP_INT, PROP_NONE);
   RNA_def_property_ui_text(prop, "Thickness", "The thickness for the generated strokes");
   RNA_def_property_ui_range(prop, 1, 100, 1, 1);