import os
+import base64
+import codecs
-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'):
+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(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]=='~')
+
+ from .util import basename
+ fn = 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("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
- tex_res = Resource(image.name+".tex2d", "texture2d")
+ 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')))
+ samp_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'
+ 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))
- tex_res.statements.append(Statement("storage", Token(fmt), image.size[0], image.size[1]))
+ return samp_res
- 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))
+ def get_sampler_name(self, tex_node):
+ name_parts = []
- return tex_res
+ 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