Delete GPU buffers if preference changes.

2 files changed, 13 insertions, 2 deletions

diff --git a/source/blender/editors/render/render_update.c b/source/blender/editors/render/render_update.c
index e4e16dd03fc..8ea958143bc 100644
--- a/source/blender/editors/render/render_update.c
+++ b/source/blender/editors/render/render_update.c
@@ -499,7 +499,7 @@ static void scene_changed(Main *bmain, Scene *scene)
 		if (ob->mode & OB_MODE_TEXTURE_PAINT) {
 			BKE_texpaint_slots_refresh_object(scene, ob);
 			BKE_paint_proj_mesh_data_check(scene, ob, NULL, NULL, NULL, NULL);
-			GPU_drawobject_free(ob->derivedFinal);			
+			GPU_drawobject_free(ob->derivedFinal);
 		}
 	}
 
diff --git a/source/blender/makesrna/intern/rna_userdef.c b/source/blender/makesrna/intern/rna_userdef.c
index 905ca5f3395..eac1ea9f46a 100644
--- a/source/blender/makesrna/intern/rna_userdef.c
+++ b/source/blender/makesrna/intern/rna_userdef.c
@@ -36,6 +36,7 @@
 #include "BLI_utildefines.h"
 
 #include "BKE_appdir.h"
+#include "BKE_DerivedMesh.h"
 #include "BKE_sound.h"
 #include "BKE_addon.h"
 
@@ -49,6 +50,7 @@
 #include "WM_types.h"
 
 #include "BLF_translation.h"
+#include "GPU_buffers.h"
 
 #ifdef WITH_CYCLES
 static EnumPropertyItem compute_device_type_items[] = {
@@ -142,6 +144,15 @@ static void rna_userdef_language_update(Main *UNUSED(bmain), Scene *UNUSED(scene
 	UI_reinit_font();
 }
 
+static void rna_userdef_vbo_update(Main *bmain, Scene *UNUSED(scene), PointerRNA *UNUSED(ptr))
+{
+	Object *ob;
+	
+	for (ob = bmain->object.first; ob; ob = ob->id.next) {
+		GPU_drawobject_free(ob->derivedFinal);
+	}
+}
+
 static void rna_userdef_show_manipulator_update(Main *bmain, Scene *scene, PointerRNA *ptr)
 {
 	UserDef *userdef = (UserDef *)ptr->data;
@@ -3952,7 +3963,7 @@ static void rna_def_userdef_system(BlenderRNA *brna)
 	RNA_def_property_ui_text(prop, "VBOs",
 	                         "Use Vertex Buffer Objects (or Vertex Arrays, if unsupported) for viewport rendering");
 	/* this isn't essential but nice to check if VBO draws any differently */
-	RNA_def_property_update(prop, NC_WINDOW, NULL);
+	RNA_def_property_update(prop, NC_WINDOW, "rna_userdef_vbo_update");
 
 	prop = RNA_def_property(srna, "anisotropic_filter", PROP_ENUM, PROP_NONE);
 	RNA_def_property_enum_sdna(prop, NULL, "anisotropic_filter");