+ from .datafile import RawData, Resource, Statement, Token
+ tex_res = Resource(self.get_texture_name(tex_node, channels), "texture")
+
+ tex_res.statements.append(Statement("type", Token("\\2d")))
+
+ if tex_node.use_mipmap:
+ tex_res.statements.append(Statement("generate_mipmap", True))
+
+ colorspace = image.colorspace_settings.name
+ if len(channels)==1 and colorspace=='sRGB':
+ raise Exception("Unsupported configuration on texture {}: Grayscale with sRGB".format(image.name))
+
+ 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 len(channels)==4:
+ fmt = 'SRGB8_ALPHA8' if colorspace=='sRGB' else 'RGBA8'
+ elif len(channels)==1:
+ fmt = 'LUMINANCE8' if channels[0]=='Y' else 'R8'
+ else:
+ fmt = 'SRGB8' if colorspace=='sRGB' else 'RGB8'
+
+ tex_res.statements.append(Statement("storage", Token(fmt), image.size[0], image.size[1]))
+
+ pixels = tuple(image.pixels)
+ texdata = ""
+ if len(channels)==4:
+ texdata = pixels_to_rgba(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(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):