X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=blender%2Fio_mspgl%2Fexport_texture.py;h=dd8191ce9f108652b2924ee1a77fbd0197d0f94c;hb=HEAD;hp=3b2201302ee1aaa0854e2a77468f496b171e260d;hpb=180b20bee11425a776c5ead05afcf6a63945d3b2;p=libs%2Fgl.git

diff --git a/blender/io_mspgl/export_texture.py b/blender/io_mspgl/export_texture.py
index 3b220130..2269e27a 100644
--- a/blender/io_mspgl/export_texture.py
+++ b/blender/io_mspgl/export_texture.py
@@ -1,56 +1,133 @@
 import os
+import bpy
 
-class TextureExporter:
-	def __init__(self):
-		self.inline_data = True
+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)
 
-	def export_texture(self, tex_node, usage='RGB'):
+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(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))
+
+		from .texture import Texture
+		texture = Texture(tex_node, channels)
+
+		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 texture.srgb else ""
+			tex_res.statements.append(Statement("external_image"+srgb, fn))
+		else:
+			tex_res.statements.append(Statement("storage", Token(texture.pixelformat), texture.width, texture.height))
+
+			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):
 		from .datafile import Resource, Statement, Token
-		tex_res = Resource(image.name+".tex2d")
+		samp_res = Resource(self.get_sampler_name(tex_node), "sampler")
 
 		use_interpolation = tex_node.interpolation!='Closest'
 		if use_interpolation:
 			if tex_node.use_mipmap:
-				tex_res.statements.append(Statement("filter", Token('LINEAR_MIPMAP_LINEAR')))
-				tex_res.statements.append(Statement("generate_mipmap", True))
+				samp_res.statements.append(Statement("filter", Token('LINEAR_MIPMAP_LINEAR')))
 			else:
-				tex_res.statements.append(Statement("filter", Token('LINEAR')))
-			tex_res.statements.append(Statement("max_anisotropy", tex_node.max_anisotropy))
+				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:
-				tex_res.statements.append(Statement("filter", Token('NEAREST_MIPMAP_NEAREST')))
-				tex_res.statements.append(Statement("generate_mipmap", True))
+				samp_res.statements.append(Statement("filter", Token('NEAREST_MIPMAP_NEAREST')))
 			else:
-				tex_res.statements.append(Statement("filter", Token('NEAREST')))
-
-		colorspace = image.colorspace_settings.name
-		if usage=='RGBA':
-			fmt = 'SRGB_ALPHA' if colorspace=='sRGB' else 'RGBA'
-		elif usage=='GRAY':
-			if colorspace=='sRGB':
-				raise Exception("Grayscale textures with sRGB colorspace are not supported")
-			fmt = 'LUMINANCE'
-		else:
-			fmt = 'SRGB' if colorspace=='sRGB' else 'RGB'
+				samp_res.statements.append(Statement("filter", Token('NEAREST')))
 
-		tex_res.statements.append(Statement("storage", Token(fmt), image.size[0], image.size[1]))
+		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))
 
-		fn = os.path.basename(image.filepath)
-		if not self.inline_data and fn:
-			tex_res.statements.append(Statement("external_image", fn))
-		else:
-			texdata = ""
-			if usage=='RGBA':
-				for p in image.pixels:
-					texdata += "\\x{:02X}".format(int(p*255))
-			elif usage=='GRAY':
-				for i in range(0, len(image.pixels), 4):
-					texdata += "\\x{:02X}".format(image.pixels[i])
-			else:
-				for i in range(0, len(image.pixels), 4):
-					for j in range(3):
-						texdata += "\\x{:02X}".format(int(image.pixels[i+j]*255))
-			tex_res.statements.append(Statement("raw_data", texdata))
+		return samp_res
 
-		return tex_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"