X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=blender%2Fio_mspgl%2Fexport_texture.py;h=8e107a718a3644dba03ffc13393c587470c95f97;hb=a741acd5c501c03de5181656498d2bcbe0df9157;hp=e03b1b0c9185f09d44fc1a96f0d9ce42678965de;hpb=1ced0f1993471e4cf8789186edc57f8f900d9b6c;p=libs%2Fgl.git

diff --git a/blender/io_mspgl/export_texture.py b/blender/io_mspgl/export_texture.py
index e03b1b0c..8e107a71 100644
--- a/blender/io_mspgl/export_texture.py
+++ b/blender/io_mspgl/export_texture.py
@@ -1,6 +1,4 @@
 import os
-import base64
-import codecs
 import bpy
 
 def pixels_to_rgba(pixels):
@@ -25,11 +23,15 @@ def pixels_to_gray(pixels):
 	for i in range(0, len(pixels), 4):
 		yield int((pixels[i]+pixels[i+1]+pixels[i+2])*255/3)
 
+def pixels_to_single_channel(pixels, channel):
+	for i in range(0, len(pixels), 4):
+		yield int(pixels[i+channel]*255)
+
 class TextureExporter:
 	def export_texture(self, tex_node, channels=['R', 'G', 'B']):
 		image = tex_node.image
 		from .datafile import RawData, Resource, Statement, Token
-		tex_res = Resource(image.name+".tex", "texture")
+		tex_res = Resource(self.get_texture_name(tex_node, channels), "texture")
 
 		tex_res.statements.append(Statement("type", Token("\\2d")))
 
@@ -43,7 +45,20 @@ class TextureExporter:
 		invert_mask = sum(1<<i for i, c in enumerate(channels) if c[0]=='~')
 
 		fn = bpy.path.basename(image.filepath)
-		if not invert_mask and fn:
+		native_channels = None
+		if fn:
+			abs_path = bpy.path.abspath(image.filepath) 
+			if os.path.exists(abs_path):
+				import imbuf
+				native_bpp = imbuf.load(bpy.path.abspath(image.filepath)).planes
+				if native_bpp==32:
+					native_channels = ['R', 'G', 'B', 'A']
+				elif native_bpp==24:
+					native_channels = ['R', 'G', 'B']
+				elif native_bpp==8:
+					native_channels = ['Y']
+
+		if not invert_mask and channels==native_channels:
 			if not tex_node.use_mipmap:
 				tex_res.statements.append(Statement("mipmap_levels", 1))
 			srgb = "_srgb" if colorspace=='sRGB' else ""
@@ -52,7 +67,7 @@ class TextureExporter:
 			if len(channels)==4:
 				fmt = 'SRGB8_ALPHA8' if colorspace=='sRGB' else 'RGBA8'
 			elif len(channels)==1:
-				fmt = 'LUMINANCE8'
+				fmt = 'LUMINANCE8' if channels[0]=='Y' else 'R8'
 			else:
 				fmt = 'SRGB8' if colorspace=='sRGB' else 'RGB8'
 
@@ -63,17 +78,26 @@ class TextureExporter:
 			if len(channels)==4:
 				texdata = pixels_to_rgba(pixels)
 			elif len(channels)==1:
-				texdata = pixels_to_gray(pixels)
+				if channels[0]=='Y':
+					texdata = pixels_to_gray(pixels)
+				else:
+					texdata = pixels_to_single_channel(pixels, "RGBA".index(channels[0]))
 			elif invert_mask:
 				texdata = pixels_to_rgb_invert(pixels, invert_mask)
 			else:
 				texdata = pixels_to_rgb(pixels)
 
-			data = RawData(image.name+".mdr", bytes(texdata))
+			data = RawData(os.path.splitext(tex_res.name)[0]+".mdr", bytes(texdata))
 			tex_res.statements.append(tex_res.create_reference_statement("external_data", data))
 
 		return tex_res
 
+	def get_texture_name(self, tex_node, channels):
+		image_name = tex_node.image.name
+		if len(channels)==1 and channels[0]!='Y':
+			image_name += "_"+channels[0]
+		return image_name+".tex"
+
 class SamplerExporter:
 	def export_sampler(self, tex_node):
 		from .datafile import Resource, Statement, Token