Node Editor: Skip socket drawing on low zoom

Socket drawing can be heavy with many nodes.
This patch skips drawing them on scale < 0.2
when they are barely visible anyway.

Differential Revision: https://developer.blender.org/D13255

1 files changed, 7 insertions, 1 deletions

diff --git a/source/blender/editors/space_node/node_draw.cc b/source/blender/editors/space_node/node_draw.cc
index b2c16280c58..bf3a9ba0c52 100644
--- a/source/blender/editors/space_node/node_draw.cc
+++ b/source/blender/editors/space_node/node_draw.cc
@@ -1842,7 +1842,13 @@ static void node_draw_basis(const bContext *C,
     UI_draw_roundbox_4fv(&rect, false, BASIS_RAD, color_outline);
   }
 
-  node_draw_sockets(v2d, C, ntree, node, true, false);
+  float scale;
+  UI_view2d_scale_get(v2d, &scale, nullptr);
+
+  /* Skip slow socket drawing if zoom is small. */
+  if (scale > 0.2f) {
+    node_draw_sockets(v2d, C, ntree, node, true, false);
+  }
 
   /* Preview. */
   bNodeInstanceHash *previews = (bNodeInstanceHash *)CTX_data_pointer_get(C, "node_previews").data;