X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=blender%2Fio_mspgl%2Fexport_texture.py;h=8e107a718a3644dba03ffc13393c587470c95f97;hb=4fd458200d3bc4543a6d8acff23b02dae5306d56;hp=dc291c9cf64cd0c93a96df939bc0b1fd685bdc36;hpb=16ff00bce699d09cc89e4280a97b097c59e7e475;p=libs%2Fgl.git

diff --git a/blender/io_mspgl/export_texture.py b/blender/io_mspgl/export_texture.py
index dc291c9c..8e107a71 100644
--- a/blender/io_mspgl/export_texture.py
+++ b/blender/io_mspgl/export_texture.py
@@ -1,6 +1,5 @@
 import os
-import base64
-import codecs
+import bpy
 
 def pixels_to_rgba(pixels):
 	return (int(p*255) for p in pixels)
@@ -11,21 +10,28 @@ def pixels_to_rgb(pixels):
 		yield int(pixels[i+1]*255)
 		yield int(pixels[i+2]*255)
 
-def pixels_to_rgb_invert_green(pixels):
+def pixels_to_rgb_invert(pixels, mask):
 	for i in range(0, len(pixels), 4):
-		yield int(pixels[i]*255)
-		yield 255-int(pixels[i+1]*255)
-		yield int(pixels[i+2]*255)
+		r = int(pixels[i]*255)
+		yield 255-r if mask&1 else r
+		g = int(pixels[i+1]*255)
+		yield 255-g if mask&2 else g
+		b = int(pixels[i+2]*255)
+		yield 255-b if mask&4 else b
 
 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, usage='RGB', *, invert_green=False):
+	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")))
 
@@ -33,19 +39,35 @@ class TextureExporter:
 			tex_res.statements.append(Statement("generate_mipmap", True))
 
 		colorspace = image.colorspace_settings.name
-		if usage=='GRAY' and colorspace=='sRGB':
+		if len(channels)==1 and colorspace=='sRGB':
 			raise Exception("Unsupported configuration on texture {}: Grayscale with sRGB".format(image.name))
 
-		from .util import basename
-		fn = basename(image.filepath)
-		if not invert_green and fn:
+		invert_mask = sum(1<<i for i, c in enumerate(channels) if c[0]=='~')
+
+		fn = bpy.path.basename(image.filepath)
+		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 ""
 			tex_res.statements.append(Statement("external_image"+srgb, fn))
 		else:
-			if usage=='RGBA':
+			if len(channels)==4:
 				fmt = 'SRGB8_ALPHA8' if colorspace=='sRGB' else 'RGBA8'
-			elif usage=='GRAY':
-				fmt = 'LUMINANCE8'
+			elif len(channels)==1:
+				fmt = 'LUMINANCE8' if channels[0]=='Y' else 'R8'
 			else:
 				fmt = 'SRGB8' if colorspace=='sRGB' else 'RGB8'
 
@@ -53,20 +75,29 @@ class TextureExporter:
 
 			pixels = tuple(image.pixels)
 			texdata = ""
-			if usage=='RGBA':
+			if len(channels)==4:
 				texdata = pixels_to_rgba(pixels)
-			elif usage=='GRAY':
-				texdata = pixels_to_gray(pixels)
-			elif invert_green:
-				texdata = pixels_to_rgb_invert_green(pixels)
+			elif len(channels)==1:
+				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