X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=blender%2Fio_mspgl%2Fexport_scene.py;h=162a1882b5e8d135168600da6e0bd2550fd00f21;hp=1a1bbab062859d794e23361a16cb03d927b40829;hb=9b371e56adc1d6be89f2d30881c3759a0d5f8eca;hpb=5b19e93f2eb5db3c97a17d63250716c26a01b53f

diff --git a/blender/io_mspgl/export_scene.py b/blender/io_mspgl/export_scene.py
index 1a1bbab0..162a1882 100644
--- a/blender/io_mspgl/export_scene.py
+++ b/blender/io_mspgl/export_scene.py
@@ -37,19 +37,28 @@ class SceneExporter:
 		from .datafile import Resource, Statement, Token
 		scene_res = Resource(scene.name+".scene", "scene")
 
-		if scene.background_set:
+		if scene.background_set or (scene.instances and scene.blended_instances):
 			scene_res.statements.append(Statement("type", Token("ordered")))
 			if scene.background_set:
 				scene_res.statements.append(scene_res.create_reference_statement("scene", resources[scene.background_set.name+".scene"]))
 
-			st = Statement("scene")
-			st.sub.append(Statement("type", Token("simple")))
-			self.add_instances(scene_res, st.sub, scene.instances, resources)
-			scene_res.statements.append(st)
+			if scene.instances:
+				st = Statement("scene")
+				st.sub.append(Statement("type", Token("simple")))
+				self.add_instances(scene_res, st.sub, scene.instances, resources)
+				scene_res.statements.append(st)
+
+			if scene.blended_instances:
+				st = Statement("scene")
+				st.sub.append(Statement("type", Token("zsorted")))
+				self.add_instances(scene_res, st.sub, scene.blended_instances, resources)
+				scene_res.statements.append(st)
 		else:
-			scene_res.statements.append(Statement("type", Token("simple")))
+			scene_type = "zsorted" if scene.blended_instances else "simple"
+			scene_res.statements.append(Statement("type", Token(scene_type)))
 
 			self.add_instances(scene_res, scene_res.statements, scene.instances, resources)
+			self.add_instances(scene_res, scene_res.statements, scene.blended_instances, resources)
 
 		return scene_res
 
@@ -118,11 +127,32 @@ class SceneExporter:
 		ss.sub.append(Statement("depth", 1.0))
 		seq_res.statements.append(ss)
 
-		ss = Statement("step", "", "content")
-		ss.sub.append(Statement("depth_test", Token("LEQUAL")))
-		ss.sub.append(seq_res.create_reference_statement("lighting", resources[scene.name+".lightn"]))
-		ss.sub.append(seq_res.create_reference_statement("scene", resources[scene.name+".scene"]))
-		seq_res.statements.append(ss)
+		scene_res = resources[scene.name+".scene"]
+		lighting_res = resources[scene.name+".lightn"]
+
+		any_opaque = False
+		any_blended = False
+		s = scene
+		while s:
+			if s.instances:
+				any_opaque = True
+			if s.blended_instances:
+				any_blended = True
+			s = s.background_set
+
+		if any_opaque:
+			ss = Statement("step", "", "content")
+			ss.sub.append(Statement("depth_test", Token("LEQUAL")))
+			ss.sub.append(seq_res.create_reference_statement("lighting", lighting_res))
+			ss.sub.append(seq_res.create_reference_statement("scene", scene_res))
+			seq_res.statements.append(ss)
+
+		if any_blended:
+			ss = Statement("step", "blended", "content")
+			ss.sub.append(Statement("depth_test", Token("LEQUAL")))
+			ss.sub.append(seq_res.create_reference_statement("lighting", lighting_res))
+			ss.sub.append(seq_res.create_reference_statement("scene", scene_res))
+			seq_res.statements.append(ss)
 
 		if scene.use_ao:
 			ss = Statement("ambient_occlusion")