Cycles: non-camera viewport render border support

This makes it possible to do a border render inside a viewport even
when not looking through the camera.

Render border could be defined by Ctrl-B shortcut (works for both
camera render border and viewport render border).

Camera render border could still be defined using Shift-B (so no
muscule memory would be broken). Currently used a special flag of
operator to do this, otherwise you'll need to either two operators
with different poll callback or it could go into conflict with a
border zoom,

Border render of a viewport could be enabled/disabled in View
panel using "Render Border" option.

1 files changed, 33 insertions, 1 deletions

diff --git a/source/blender/makesrna/intern/rna_space.c b/source/blender/makesrna/intern/rna_space.c
index bfd0f731626..13aa5557964 100644
--- a/source/blender/makesrna/intern/rna_space.c
+++ b/source/blender/makesrna/intern/rna_space.c
@@ -1494,7 +1494,39 @@ static void rna_def_space_view3d(BlenderRNA *brna)
 	RNA_def_property_ui_text(prop, "Camera",
 	                         "Active camera used in this view (when unlocked from the scene's active camera)");
 	RNA_def_property_update(prop, NC_SPACE | ND_SPACE_VIEW3D, NULL);
-	
+
+	/* render border */
+	prop = RNA_def_property(srna, "use_render_border", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_sdna(prop, NULL, "flag2", V3D_RENDER_BORDER);
+	RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
+	RNA_def_property_ui_text(prop, "Render Border",
+	                         "use a user-defined border region within the frame size for rendered viewport");
+	RNA_def_property_update(prop, NC_SPACE | ND_SPACE_VIEW3D, NULL);
+
+	prop = RNA_def_property(srna, "render_border_min_x", PROP_FLOAT, PROP_NONE);
+	RNA_def_property_float_sdna(prop, NULL, "render_border.xmin");
+	RNA_def_property_range(prop, 0.0f, 1.0f);
+	RNA_def_property_ui_text(prop, "Border Minimum X", "Minimum X value to for the render border");
+	RNA_def_property_update(prop, NC_SPACE | ND_SPACE_VIEW3D, NULL);
+
+	prop = RNA_def_property(srna, "render_border_min_y", PROP_FLOAT, PROP_NONE);
+	RNA_def_property_float_sdna(prop, NULL, "render_border.ymin");
+	RNA_def_property_range(prop, 0.0f, 1.0f);
+	RNA_def_property_ui_text(prop, "Border Minimum Y", "Minimum Y value for the render border");
+	RNA_def_property_update(prop, NC_SPACE | ND_SPACE_VIEW3D, NULL);
+
+	prop = RNA_def_property(srna, "render_border_max_x", PROP_FLOAT, PROP_NONE);
+	RNA_def_property_float_sdna(prop, NULL, "render_border.xmax");
+	RNA_def_property_range(prop, 0.0f, 1.0f);
+	RNA_def_property_ui_text(prop, "Border Maximum X", "Maximum X value for the render border");
+	RNA_def_property_update(prop, NC_SPACE | ND_SPACE_VIEW3D, NULL);
+
+	prop = RNA_def_property(srna, "render_border_max_y", PROP_FLOAT, PROP_NONE);
+	RNA_def_property_float_sdna(prop, NULL, "render_border.ymax");
+	RNA_def_property_range(prop, 0.0f, 1.0f);
+	RNA_def_property_ui_text(prop, "Border Maximum Y", "Maximum Y value for the render border");
+	RNA_def_property_update(prop, NC_SPACE | ND_SPACE_VIEW3D, NULL);
+
 	prop = RNA_def_property(srna, "lock_object", PROP_POINTER, PROP_NONE);
 	RNA_def_property_flag(prop, PROP_EDITABLE);
 	RNA_def_property_pointer_sdna(prop, NULL, "ob_centre");