X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=blender%2Fio_mspgl%2Fexport_texture.py;h=7661b90b2fa5e1d91c5ba0410689904d29681bdb;hb=03d2f0d7f4673b5262f396fda430e766eec4549b;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..7661b90b 100644
--- a/blender/io_mspgl/export_texture.py
+++ b/blender/io_mspgl/export_texture.py
@@ -1,13 +1,110 @@
+import os
+import base64
+import codecs
+
+def encode_pixels(pixels):
+	from .datafile import Token
+	return Token(codecs.decode(b"="+base64.b64encode(bytes(pixels))+b"=", "ascii"))
+
+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_green(pixels):
+	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)
+
+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):
+	def export_texture(self, tex_node, usage='RGB', *, invert_green=False):
+		image = tex_node.image
 		from .datafile import Resource, Statement, Token
-		tex_res = Resource(texture.name+".tex2d")
+		tex_res = Resource(image.name+".tex2d", "texture2d")
+
+		if tex_node.use_mipmap:
+			tex_res.statements.append(Statement("generate_mipmap", True))
+
+		colorspace = image.colorspace_settings.name
+		if usage=='GRAY' and colorspace=='sRGB':
+				raise Exception("Grayscale textures with sRGB colorspace are not supported")
+
+		from .util import basename
+		fn = basename(image.filepath)
+		if not invert_green and fn:
+			srgb = "_srgb" if colorspace=='sRGB' else ""
+			tex_res.statements.append(Statement("external_image"+srgb, fn))
+		else:
+			if usage=='RGBA':
+				fmt = 'SRGB8_ALPHA8' if colorspace=='sRGB' else 'RGBA8'
+			elif usage=='GRAY':
+				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 usage=='RGBA':
+				texdata = encode_pixels(pixels_to_rgba(pixels))
+			elif usage=='GRAY':
+				texdata = encode_pixels(pixels_to_gray(pixels))
+			elif invert_green:
+				texdata = encode_pixels(pixels_to_rgb_invert_green(pixels))
+			else:
+				texdata = encode_pixels(pixels_to_rgb(pixels))
+			tex_res.statements.append(Statement("raw_data", texdata))
 
 		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"