Multi-View and Stereo 3D

Official Documentation:
http://www.blender.org/manual/render/workflows/multiview.html

Implemented Features
====================
Builtin Stereo Camera
* Convergence Mode
* Interocular Distance
* Convergence Distance
* Pivot Mode

Viewport
* Cameras
* Plane
* Volume

Compositor
* View Switch Node
* Image Node Multi-View OpenEXR support

Sequencer
* Image/Movie Strips 'Use Multiview'

UV/Image Editor
* Option to see Multi-View images in Stereo-3D or its individual images
* Save/Open Multi-View (OpenEXR, Stereo3D, individual views) images

I/O
* Save/Open Multi-View (OpenEXR, Stereo3D, individual views) images

Scene Render Views
* Ability to have an arbitrary number of views in the scene

Missing Bits
============
First rule of Multi-View bug report: If something is not working as it should *when Views is off* this is a severe bug, do mention this in the report.

Second rule is, if something works *when Views is off* but doesn't (or crashes) when *Views is on*, this is a important bug. Do mention this in the report.

Everything else is likely small todos, and may wait until we are sure none of the above is happening.

Apart from that there are those known issues:
* Compositor Image Node poorly working for Multi-View OpenEXR
(this was working prefectly before the 'Use Multi-View' functionality)
* Selecting camera from Multi-View when looking from camera is problematic
* Animation Playback (ctrl+F11) doesn't support stereo formats
* Wrong filepath when trying to play back animated scene
* Viewport Rendering doesn't support Multi-View
* Overscan Rendering
* Fullscreen display modes need to warn the user
* Object copy should be aware of views suffix

Acknowledgments
===============
* Francesco Siddi for the help with the original feature specs and design
* Brecht Van Lommel for the original review of the code and design early on
* Blender Foundation for the Development Fund to support the project wrap up

Final patch reviewers:
* Antony Riakiotakis (psy-fi)
* Campbell Barton (ideasman42)
* Julian Eisel (Severin)
* Sergey Sharybin (nazgul)
* Thomas Dinged (dingto)

Code contributors of the original branch in github:
* Alexey Akishin
* Gabriel Caraballo

1 files changed, 97 insertions, 0 deletions

diff --git a/source/blender/makesrna/intern/rna_nodetree.c b/source/blender/makesrna/intern/rna_nodetree.c
index e577f7635f1..075b139c6c4 100644
--- a/source/blender/makesrna/intern/rna_nodetree.c
+++ b/source/blender/makesrna/intern/rna_nodetree.c
@@ -2616,6 +2616,70 @@ static EnumPropertyItem *rna_Node_image_layer_itemf(bContext *UNUSED(C), Pointer
 	return item;
 }
 
+static int rna_Node_image_has_layers_get(PointerRNA *ptr)
+{
+	bNode *node = (bNode *)ptr->data;
+	Image *ima = (Image *)node->id;
+
+	if (!ima || !(ima->rr)) return 0;
+
+	return RE_layers_have_name(ima->rr);
+}
+
+static int rna_Node_image_has_views_get(PointerRNA *ptr)
+{
+	bNode *node = (bNode *)ptr->data;
+	Image *ima = (Image *)node->id;
+
+	if (!ima || !(ima->rr)) return 0;
+
+	return BLI_listbase_count_ex(&ima->rr->views, 2) > 1;
+}
+
+static EnumPropertyItem *renderresult_views_add_enum(RenderView *rv)
+{
+	EnumPropertyItem *item = NULL;
+	EnumPropertyItem tmp = {0, "ALL", 0, "All", ""};
+	int i = 1, totitem = 0;
+
+	/* option to use all views */
+	RNA_enum_item_add(&item, &totitem, &tmp);
+
+	while (rv) {
+		tmp.identifier = rv->name;
+		/* little trick: using space char instead empty string makes the item selectable in the dropdown */
+		if (rv->name[0] == '\0')
+			tmp.name = " ";
+		else
+			tmp.name = rv->name;
+		tmp.value = i++;
+		RNA_enum_item_add(&item, &totitem, &tmp);
+		rv = rv->next;
+	}
+
+	RNA_enum_item_end(&item, &totitem);
+
+	return item;
+}
+
+static EnumPropertyItem *rna_Node_image_view_itemf(bContext *UNUSED(C), PointerRNA *ptr,
+                                                   PropertyRNA *UNUSED(prop), bool *free)
+{
+	bNode *node = (bNode *)ptr->data;
+	Image *ima = (Image *)node->id;
+	EnumPropertyItem *item = NULL;
+	RenderView *rv;
+
+	if (!ima || !(ima->rr)) return NULL;
+
+	rv = ima->rr->views.first;
+	item = renderresult_views_add_enum(rv);
+
+	*free = true;
+
+	return item;
+}
+
 static EnumPropertyItem *rna_Node_scene_layer_itemf(bContext *UNUSED(C), PointerRNA *ptr,
                                                     PropertyRNA *UNUSED(prop), bool *r_free)
 {
@@ -2907,6 +2971,11 @@ static EnumPropertyItem prop_image_layer_items[] = {
 	{0, NULL, 0, NULL, NULL}
 };
 
+static EnumPropertyItem prop_image_view_items[] = {
+	{ 0, "ALL", 0, "All", ""},
+	{0, NULL, 0, NULL, NULL}
+};
+
 static EnumPropertyItem prop_scene_layer_items[] = {
 	{ 0, "PLACEHOLDER",          0, "Placeholder",          ""},
 	{0, NULL, 0, NULL, NULL}
@@ -4263,6 +4332,24 @@ static void def_node_image_user(StructRNA *srna)
 	RNA_def_property_flag(prop, PROP_ENUM_NO_TRANSLATE);
 	RNA_def_property_ui_text(prop, "Layer", "");
 	RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_Node_image_layer_update");
+
+	prop = RNA_def_property(srna, "has_layers", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_funcs(prop, "rna_Node_image_has_layers_get", NULL);
+	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
+	RNA_def_property_ui_text(prop, "Has Layers", "True if this image has any named layer");
+
+	prop = RNA_def_property(srna, "view", PROP_ENUM, PROP_NONE);
+	RNA_def_property_enum_sdna(prop, NULL, "view");
+	RNA_def_property_enum_items(prop, prop_image_view_items);
+	RNA_def_property_enum_funcs(prop, NULL, NULL, "rna_Node_image_view_itemf");
+	RNA_def_property_flag(prop, PROP_ENUM_NO_TRANSLATE);
+	RNA_def_property_ui_text(prop, "View", "");
+	RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_Node_update");
+
+	prop = RNA_def_property(srna, "has_views", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_funcs(prop, "rna_Node_image_has_views_get", NULL);
+	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
+	RNA_def_property_ui_text(prop, "Has View", "True if this image has multiple views");
 }
 
 static void def_cmp_image(StructRNA *srna)
@@ -5811,6 +5898,16 @@ static void def_cmp_switch(StructRNA *srna)
 	RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_Node_update");
 }
 
+static void def_cmp_switch_view(StructRNA *srna)
+{
+	PropertyRNA *prop;
+
+	prop = RNA_def_property(srna, "check", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_sdna(prop, NULL, "custom1", 0);
+	RNA_def_property_ui_text(prop, "Switch", "Off: first socket, On: second socket");
+	RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_Node_update");
+}
+
 static void def_cmp_colorcorrection(StructRNA *srna)
 {
 	PropertyRNA *prop;