Gizmo: add depth bias for 3D selection

This allows some gizmos priority over others even when they're behind.

1 files changed, 7 insertions, 0 deletions

diff --git a/source/blender/makesrna/intern/rna_wm_gizmo.c b/source/blender/makesrna/intern/rna_wm_gizmo.c
index a473f97d554..22162aa017b 100644
--- a/source/blender/makesrna/intern/rna_wm_gizmo.c
+++ b/source/blender/makesrna/intern/rna_wm_gizmo.c
@@ -384,6 +384,7 @@ static void rna_Gizmo_matrix_world_get(PointerRNA *ptr, float value[16])
 
 RNA_GIZMO_GENERIC_FLOAT_RW_DEF(scale_basis, scale_basis);
 RNA_GIZMO_GENERIC_FLOAT_RW_DEF(line_width, line_width);
+RNA_GIZMO_GENERIC_FLOAT_RW_DEF(select_bias, select_bias);
 
 RNA_GIZMO_GENERIC_FLAG_RW_DEF(flag_use_draw_hover, flag, WM_GIZMO_DRAW_HOVER);
 RNA_GIZMO_GENERIC_FLAG_RW_DEF(flag_use_draw_modal, flag, WM_GIZMO_DRAW_MODAL);
@@ -1159,6 +1160,12 @@ static void rna_def_gizmo(BlenderRNA *brna, PropertyRNA *cprop)
   RNA_def_property_range(prop, 0.0f, FLT_MAX);
   RNA_def_property_update(prop, NC_SCREEN | NA_EDITED, NULL);
 
+  prop = RNA_def_property(srna, "select_bias", PROP_FLOAT, PROP_NONE);
+  RNA_def_property_ui_text(prop, "Select Bias", "Depth bias used for selection");
+  RNA_def_property_float_funcs(
+      prop, "rna_Gizmo_select_bias_get", "rna_Gizmo_select_bias_set", NULL);
+  RNA_def_property_range(prop, -FLT_MAX, FLT_MAX);
+
   /* wmGizmo.flag */
   /* WM_GIZMO_HIDDEN */
   prop = RNA_def_property(srna, "hide", PROP_BOOLEAN, PROP_NONE);