1 files changed, 33 insertions, 1 deletions
diff --git a/source/blender/draw/intern/draw_manager.c b/source/blender/draw/intern/draw_manager.c
index 63c7cc667cb..b965045a424 100644
--- a/source/blender/draw/intern/draw_manager.c
+++ b/source/blender/draw/intern/draw_manager.c
@@ -43,6 +43,7 @@
 #include "DNA_camera_types.h"
 #include "DNA_mesh_types.h"
 #include "DNA_meshdata_types.h"
+#include "DNA_userdef_types.h"
 #include "DNA_world_types.h"
 
 #include "ED_gpencil.h"
@@ -84,6 +85,7 @@
 #include "draw_cache_impl.h"
 
 #include "engines/basic/basic_engine.h"
+#include "engines/compositor/compositor_engine.h"
 #include "engines/eevee/eevee_engine.h"
 #include "engines/eevee_next/eevee_engine.h"
 #include "engines/external/external_engine.h"
@@ -1214,6 +1216,31 @@ static void drw_engines_enable_editors(void)
   }
 }
 
+static bool is_compositor_enabled(void)
+{
+  if (!U.experimental.use_realtime_compositor) {
+    return false;
+  }
+
+  if (!(DST.draw_ctx.v3d->shading.flag & V3D_SHADING_COMPOSITOR)) {
+    return false;
+  }
+
+  if (!(DST.draw_ctx.v3d->shading.type > OB_MATERIAL)) {
+    return false;
+  }
+
+  if (!DST.draw_ctx.scene->use_nodes) {
+    return false;
+  }
+
+  if (!DST.draw_ctx.scene->nodetree) {
+    return false;
+  }
+
+  return true;
+}
+
 static void drw_engines_enable(ViewLayer *UNUSED(view_layer),
                                RenderEngineType *engine_type,
                                bool gpencil_engine_needed)
@@ -1226,6 +1253,11 @@ static void drw_engines_enable(ViewLayer *UNUSED(view_layer),
   if (gpencil_engine_needed && ((drawtype >= OB_SOLID) || !use_xray)) {
     use_drw_engine(&draw_engine_gpencil_type);
   }
+
+  if (is_compositor_enabled()) {
+    use_drw_engine(&draw_engine_compositor_type);
+  }
+
   drw_engines_enable_overlays();
 
 #ifdef WITH_DRAW_DEBUG
@@ -1597,7 +1629,6 @@ void DRW_draw_render_loop_ex(struct Depsgraph *depsgraph,
                              GPUViewport *viewport,
                              const bContext *evil_C)
 {
-
   Scene *scene = DEG_get_evaluated_scene(depsgraph);
   ViewLayer *view_layer = DEG_get_evaluated_view_layer(depsgraph);
   RegionView3D *rv3d = region->regiondata;
@@ -2948,6 +2979,7 @@ void DRW_engines_register(void)
   DRW_engine_register(&draw_engine_overlay_type);
   DRW_engine_register(&draw_engine_select_type);
   DRW_engine_register(&draw_engine_basic_type);
+  DRW_engine_register(&draw_engine_compositor_type);
 #ifdef WITH_DRAW_DEBUG
   DRW_engine_register(&draw_engine_debug_select_type);
 #endif