Added UI support to set OpenGL MultiSample.

Code to support it was lying around for long already, but not controlled by UI nicely.
Now you have in user preferences "System" tab an option to set it. 

NOTE:
- it only works saving as User startup.blend, and restart Blender.
- your system should support it, no check for it is visible in UI
- tested only on iMac OSX 10.7

Screenshot:
http://www.blender.org/bf/chinchilla.blend.png

1 files changed, 16 insertions, 1 deletions

diff --git a/source/blender/makesrna/intern/rna_userdef.c b/source/blender/makesrna/intern/rna_userdef.c
index 13219ea133d..3e9f5b44a3d 100644
--- a/source/blender/makesrna/intern/rna_userdef.c
+++ b/source/blender/makesrna/intern/rna_userdef.c
@@ -3018,6 +3018,15 @@ static void rna_def_userdef_system(BlenderRNA *brna)
 		{0, NULL, 0, NULL, NULL}
 	};
 	
+	static EnumPropertyItem multi_sample_levels[] = {
+		{USER_MULTISAMPLE_NONE, "MULTISAMPLE_NONE", 0, "No MultiSample", "Do not use OpenGL MultiSample"},
+		{USER_MULTISAMPLE_2, "MULTISAMPLE_2", 0, "MultiSample: 2", "Use 2x OpenGL MultiSample (requires restart)"},
+		{USER_MULTISAMPLE_4, "MULTISAMPLE_4", 0, "MultiSample: 4", "Use 4x OpenGL MultiSample (requires restart)"},
+		{USER_MULTISAMPLE_8, "MULTISAMPLE_8", 0, "MultiSample: 8", "Use 8x OpenGL MultiSample (requires restart)"},
+		{USER_MULTISAMPLE_16, "MULTISAMPLE_16", 0, "MultiSample: 16", "Use 16x OpenGL MultiSample (requires restart)"},
+		{0, NULL, 0, NULL, NULL}
+	};
+	
 #if 0
 	/* hardcoded here, could become dynamic somehow */
 	/* locale according to http://www.roseindia.net/tutorials/I18N/locales-list.shtml */
@@ -3312,6 +3321,12 @@ static void rna_def_userdef_system(BlenderRNA *brna)
 	RNA_def_property_ui_text(prop, "Text Anti-aliasing", "Draw user interface text anti-aliased");
 	RNA_def_property_update(prop, 0, "rna_userdef_text_update");
 	
+	/* Full scene anti-aliasing */
+	prop = RNA_def_property(srna, "ogl_multisamples", PROP_ENUM, PROP_NONE);
+	RNA_def_property_enum_bitflag_sdna(prop, NULL, "ogl_multisamples");
+	RNA_def_property_enum_items(prop, multi_sample_levels);
+	RNA_def_property_ui_text(prop, "MultiSample", "Enable OpenGL multi-sampling, only for systems that support it, requires restart");
+
 #ifdef WITH_CYCLES
 	prop = RNA_def_property(srna, "compute_device_type", PROP_ENUM, PROP_NONE);
 	RNA_def_property_flag(prop, PROP_ENUM_NO_CONTEXT);
@@ -3441,7 +3456,7 @@ static void rna_def_userdef_input(BlenderRNA *brna)
 	RNA_def_property_boolean_sdna(prop, NULL, "ndof_flag", NDOF_SHOW_GUIDE);
 	RNA_def_property_ui_text(prop, "Show Navigation Guide", "Display the center and axis during rotation");
 	/* TODO: update description when fly-mode visuals are in place  ("projected position in fly mode")*/
-
+	
 	/* 3D view */
 	prop = RNA_def_property(srna, "ndof_view_rotate_method", PROP_ENUM, PROP_NONE);
 	RNA_def_property_enum_bitflag_sdna(prop, NULL, "ndof_flag");