Realtime Compositor: Add evaluator and engine

This patch adds the core realtime compositor evaluator as well as a
compositor draw engine powered by the evaluator that operates in the
viewport. The realtime compositor is a new GPU accelerated compositor
that will be used to power the viewport compositor imminently as well as
the existing compositor in the future.

This patch only adds the evaluator and engine as an experimental
feature, the implementation of the nodes themselves will be committed
separately.

See T99210.

Differential Revision: https://developer.blender.org/D15206

Reviewed By: Clement Foucault

2 files changed, 12 insertions, 0 deletions

diff --git a/source/blender/makesrna/intern/rna_space.c b/source/blender/makesrna/intern/rna_space.c
index 5cee2ca00a3..502b0404764 100644
--- a/source/blender/makesrna/intern/rna_space.c
+++ b/source/blender/makesrna/intern/rna_space.c
@@ -4199,6 +4199,14 @@ static void rna_def_space_view3d_shading(BlenderRNA *brna)
   RNA_def_property_ui_text(prop, "Shader AOV Name", "Name of the active Shader AOV");
   RNA_def_property_flag(prop, PROP_HIDDEN);
   RNA_def_property_update(prop, NC_SPACE | ND_SPACE_VIEW3D, NULL);
+
+  prop = RNA_def_property(srna, "use_compositor", PROP_BOOLEAN, PROP_NONE);
+  RNA_def_property_boolean_sdna(prop, NULL, "flag", V3D_SHADING_COMPOSITOR);
+  RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
+  RNA_def_property_boolean_default(prop, false);
+  RNA_def_property_ui_text(
+      prop, "Compositor", "Preview the compositor output inside the viewport");
+  RNA_def_property_update(prop, NC_SPACE | ND_SPACE_VIEW3D | NS_VIEW3D_SHADING, NULL);
 }
 
 static void rna_def_space_view3d_overlay(BlenderRNA *brna)
diff --git a/source/blender/makesrna/intern/rna_userdef.c b/source/blender/makesrna/intern/rna_userdef.c
index cfc72791123..438bac9b458 100644
--- a/source/blender/makesrna/intern/rna_userdef.c
+++ b/source/blender/makesrna/intern/rna_userdef.c
@@ -6338,6 +6338,10 @@ static void rna_def_userdef_experimental(BlenderRNA *brna)
   RNA_def_property_ui_text(
       prop, "Sculpt Mode Tilt Support", "Support for pen tablet tilt events in Sculpt Mode");
 
+  prop = RNA_def_property(srna, "use_realtime_compositor", PROP_BOOLEAN, PROP_NONE);
+  RNA_def_property_boolean_sdna(prop, NULL, "use_realtime_compositor", 1);
+  RNA_def_property_ui_text(prop, "Realtime Compositor", "Enable the new realtime compositor");
+
   prop = RNA_def_property(srna, "use_sculpt_texture_paint", PROP_BOOLEAN, PROP_NONE);
   RNA_def_property_boolean_sdna(prop, NULL, "use_sculpt_texture_paint", 1);
   RNA_def_property_ui_text(prop, "Sculpt Texture Paint", "Use texture painting in Sculpt Mode");