Workbench: Add transparency support for materials

This adds the posibility of having certain materials transparent in solid
mode. The option is (for now) per material only and thus only shows in
material color mode.

This uses the same rendering technique as Xray mode.

Note that objects are not considered transparent for selection with this.

1 files changed, 6 insertions, 0 deletions

diff --git a/source/blender/makesrna/intern/rna_material.c b/source/blender/makesrna/intern/rna_material.c
index a5b02db6a28..b32d3aa9d78 100644
--- a/source/blender/makesrna/intern/rna_material.c
+++ b/source/blender/makesrna/intern/rna_material.c
@@ -384,6 +384,12 @@ static void rna_def_material_display(StructRNA *srna)
 	RNA_def_property_ui_text(prop, "Metallic", "Amount of mirror reflection for raytrace");
 	RNA_def_property_update(prop, 0, "rna_Material_update");
 
+	prop = RNA_def_property(srna, "transparency", PROP_FLOAT, PROP_FACTOR);
+	RNA_def_property_float_sdna(prop, NULL, "transparency");
+	RNA_def_property_range(prop, 0.0f, 1.0f);
+	RNA_def_property_ui_text(prop, "Transparency", "Amount of transparency in solid mode");
+	RNA_def_property_update(prop, 0, "rna_Material_draw_update");
+
 	/* Freestyle line color */
 	prop = RNA_def_property(srna, "line_color", PROP_FLOAT, PROP_COLOR);
 	RNA_def_property_float_sdna(prop, NULL, "line_col");