From: Mikko Rasa <tdb@tdb.fi>
Date: Wed, 15 Sep 2021 14:58:23 +0000 (+0300)
Subject: Use more compact data types when exporting meshes
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=03d6f389ff05d1ea573d4c0c5e1216cb756a6c20

Use more compact data types when exporting meshes
---

diff --git a/blender/io_mspgl/export_mesh.py b/blender/io_mspgl/export_mesh.py
index 2a8dbe00..7bb4e224 100644
--- a/blender/io_mspgl/export_mesh.py
+++ b/blender/io_mspgl/export_mesh.py
@@ -18,22 +18,28 @@ class MeshExporter:
 		resource = Resource(mesh.name+".mesh", "mesh")
 		statements = resource.statements
 
-		st = Statement("vertices", Token("NORMAL3"))
+		st = Statement("vertices", Token("NORMAL3_BYTE"))
+		if mesh.uv_layers and mesh.tangent_vecs:
+			st.append(Token("TANGENT3_BYTE"))
 		if mesh.vertices[0].color:
 			st.append(Token("COLOR4_UBYTE"))
 		if mesh.uv_layers:
 			for u in mesh.uv_layers:
 				size = str(len(u.uvs[0]))
+				min_val = min(*u.uvs[0])
+				max_val = max(*u.uvs[1])
+				for c in u.uvs:
+					min_val = min(min_val, *c)
+					max_val = max(max_val, *c)
+				uv_type = "USHORT" if min_val>=0.0 and max_val<=1.0 else "FLOAT"
 				if u.unit==0:
-					st.append(Token("TEXCOORD"+size))
+					st.append(Token("TEXCOORD{}_{}".format(size, uv_type)))
 				else:
-					st.append(Token("TEXCOORD{}_{}".format(size, u.unit)))
-			if mesh.tangent_vecs:
-				st.append(Token("TANGENT3"))
+					st.append(Token("TEXCOORD{}_{}_{}".format(size, u.unit, uv_type)))
 		if mesh.vertex_groups:
-			st.append(Token("GROUP{}".format(mesh.max_groups_per_vertex)))
-			st.append(Token("WEIGHT{}".format(mesh.max_groups_per_vertex)))
-		st.append(Token("VERTEX3"))
+			st.append(Token("GROUP{}_UBYTE".format(mesh.max_groups_per_vertex)))
+			st.append(Token("WEIGHT{}_USHORT".format(mesh.max_groups_per_vertex)))
+		st.append(Token("VERTEX3_FLOAT"))
 
 		normal = None
 		color = None