X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=blender%2Fio_mspgl%2Fexport_texture.py;h=e03b1b0c9185f09d44fc1a96f0d9ce42678965de;hb=1ced0f1993471e4cf8789186edc57f8f900d9b6c;hp=bb3eb28d243ae79a86503dc2bc1e9258adb3d184;hpb=ea3e95735fcd9d6a80d23dbd90667eb2f1c95ef4;p=libs%2Fgl.git

diff --git a/blender/io_mspgl/export_texture.py b/blender/io_mspgl/export_texture.py
index bb3eb28d..e03b1b0c 100644
--- a/blender/io_mspgl/export_texture.py
+++ b/blender/io_mspgl/export_texture.py
@@ -1,13 +1,117 @@
+import os
+import base64
+import codecs
+import bpy
+
+def pixels_to_rgba(pixels):
+	return (int(p*255) for p in pixels)
+
+def pixels_to_rgb(pixels):
+	for i in range(0, len(pixels), 4):
+		yield int(pixels[i]*255)
+		yield int(pixels[i+1]*255)
+		yield int(pixels[i+2]*255)
+
+def pixels_to_rgb_invert(pixels, mask):
+	for i in range(0, len(pixels), 4):
+		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)
+
 class TextureExporter:
-	def export_texture(self, texture):
-		from .datafile import Resource, Statement, Token
-		tex_res = Resource(texture.name+".tex2d")
+	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.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)
+		if not invert_mask and fn:
+			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'
+			else:
+				fmt = 'SRGB8' if colorspace=='sRGB' else 'RGB8'
 
-		tex_res.statements.append(Statement("min_filter", Token("LINEAR")))
-		tex_res.statements.append(Statement("storage", Token("RGBA"), texture.image.size[0], texture.image.size[1]))
-		texdata = ""
-		for p in texture.image.pixels:
-			texdata += "\\x%02X"%int(p*255)
-		tex_res.statements.append(Statement("raw_data", texdata))
+			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:
+				texdata = pixels_to_gray(pixels)
+			elif invert_mask:
+				texdata = pixels_to_rgb_invert(pixels, invert_mask)
+			else:
+				texdata = pixels_to_rgb(pixels)
+
+			data = RawData(image.name+".mdr", bytes(texdata))
+			tex_res.statements.append(tex_res.create_reference_statement("external_data", data))
 
 		return tex_res
+
+class SamplerExporter:
+	def export_sampler(self, tex_node):
+		from .datafile import Resource, Statement, Token
+		samp_res = Resource(self.get_sampler_name(tex_node), "sampler")
+
+		use_interpolation = tex_node.interpolation!='Closest'
+		if use_interpolation:
+			if tex_node.use_mipmap:
+				samp_res.statements.append(Statement("filter", Token('LINEAR_MIPMAP_LINEAR')))
+			else:
+				samp_res.statements.append(Statement("filter", Token('LINEAR')))
+			samp_res.statements.append(Statement("max_anisotropy", tex_node.max_anisotropy))
+		else:
+			if tex_node.use_mipmap:
+				samp_res.statements.append(Statement("filter", Token('NEAREST_MIPMAP_NEAREST')))
+			else:
+				samp_res.statements.append(Statement("filter", Token('NEAREST')))
+
+		if tex_node.extension=="REPEAT":
+			samp_res.statements.append(Statement("wrap", Token('REPEAT')))
+		elif tex_node.extension=="EXTEND":
+			samp_res.statements.append(Statement("wrap", Token('CLAMP_TO_EDGE')))
+		elif tex_node.extension=="CLIP":
+			samp_res.statements.append(Statement("wrap", Token('CLAMP_TO_BORDER')))
+			samp_res.statements.append(Statement("border_color", 0.0, 0.0, 0.0, 0.0))
+
+		return samp_res
+
+	def get_sampler_name(self, tex_node):
+		name_parts = []
+
+		use_interpolation = tex_node.interpolation!='Closest'
+		name_parts.append("linear" if use_interpolation else "nearest")
+		if tex_node.use_mipmap:
+			name_parts.append("mip")
+		if use_interpolation and tex_node.max_anisotropy>1:
+			name_parts.append("aniso{:g}x".format(tex_node.max_anisotropy))
+		if tex_node.extension!="REPEAT":
+			name_parts.append("clip" if tex_node.extension=="CLIP" else "clamp")
+
+		return "_".join(name_parts)+".samp"