Make texture channel handling in the Blender exporter more flexible

[libs/gl.git] / blender / io_mspgl / material.py

diff --git a/blender/io_mspgl/material.py b/blender/io_mspgl/material.py
index 87e9479bbc676c309495d39b527a1c1848bef6f4..b30a2ef5d90fef6e7ec1aa1337d6fa5002661136 100644 (file)
--- a/blender/io_mspgl/material.py
+++ b/blender/io_mspgl/material.py
@@ -89,8 +89,7 @@ class MaterialProperty:
                self.tex_keyword = tex_keyword
                self.value = value
                self.texture = None
-               self.tex_usage = None
-               self.invert_green = False
+               self.tex_channels = None
 
        def set_from_input(self, node_tree, input_socket, alpha_socket=None):
                if self.keyword:
@@ -108,16 +107,17 @@ class MaterialProperty:
                        from_node, _ = get_linked_node_and_socket(node_tree, input_socket)
                        alpha_from = None
                        if from_node:
-                               usage = None
+                               channels = None
                                if from_node.type=='NORMAL_MAP':
                                        from_node, _ = get_linked_node_and_socket(node_tree, from_node.inputs["Color"])
                                        invert, _ = check_invert_green(node_tree, from_node)
+                                       channels = ['R', 'G', 'B']
                                        if invert:
                                                from_node = invert
-                                               self.invert_green = True
-                                       usage = 'RGB'
+                                               channels[1] = '~G';
                                elif from_node.type=='RGBTOBW':
                                        from_node, _ = get_linked_node_and_socket(node_tree, from_node.inputs["Color"])
+                                       channels = ['Y']
 
                                if alpha_socket:
                                        alpha_from, _ = get_linked_node_and_socket(node_tree, alpha_socket)
@@ -126,14 +126,14 @@ class MaterialProperty:
 
                                if from_node.type=='TEX_IMAGE':
                                        self.texture = from_node
-                                       if usage:
-                                               self.tex_usage = usage
+                                       if channels:
+                                               self.tex_channels = channels
                                        elif alpha_from:
-                                               self.tex_usage = 'RGBA'
+                                               self.tex_channels = ['R', 'G', 'B', 'A']
                                        elif type(self.value)==tuple:
-                                               self.tex_usage = 'RGB'
+                                               self.tex_channels = ['R', 'G', 'B']
                                        else:
-                                               self.tex_usage = 'GRAY'
+                                               self.tex_channels = ['Y']
                                else:
                                        raise Exception("Unsupported property input node type "+from_node.type)