+import os
+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)
+
+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, 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(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']
- 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))
+ 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
+ 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"
projects / libs / gl.git / blobdiff