blender: Restore foreach_set() workaround for <4.1

It was removed in 8a4ce9b, but Triton, my web server, runs Ubuntu, and
that ships old versions of things, it currently has Blender 4.0.2. Add
version checking and apply the fix for versions < 4.1.

Author: vkoskiv

integrations/blender/__init__.py

@@ -54,6 +54,9 @@
 	StringProperty,
 )
 
+# Breaking changes are quite common in Blender's Python API, unfortunately.
+major, minor, patch = bpy.app.version
+
 class CrayRenderSettings(bpy.types.PropertyGroup):
 	samples: IntProperty(
 		name="Samples",
@@ -477,6 +480,10 @@ def view_update(self, context, depsgraph):
 
 	def display_bitmap(self, bm):
 		floats = np.frombuffer(bm.data, np.float32)
+		if (major, minor) < (4, 1):
+			# convert [r,g,b,a,r,g,b,a,...] to [(r,g,b,a),(r,g,b,a),...]
+			# For context, see f1516d46a570, 8a4ce9b3fd07c66, and https://developer.blender.org/docs/release_notes/4.1/python_api/#foreach
+			floats = floats.reshape(-1, 4)
 		result = self.begin_result(0, 0, bm.width, bm.height)
 		r_pass = result.layers[0].passes["Combined"]
 		r_pass.rect.foreach_set(floats)