+import os
+
class TextureExporter:
- def export_texture(self, texture):
+ def __init__(self):
+ self.inline_data = True
+
+ def export_texture(self, tex_node, usage='RGB'):
+ 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")
- 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))
+ from .util import basename
+ fn = basename(image.filepath)
+ if not self.inline_data 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("storage", Token(fmt), image.size[0], image.size[1]))
+
+ 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 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"