glTF: remove no more needed file
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# Copyright 2018-2019 The glTF-Blender-IO authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import bpy
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from .gltf2_blender_image import BlenderImage
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from ..com.gltf2_blender_conversion import texture_transform_gltf_to_blender
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from io_scene_gltf2.io.com.gltf2_io import Sampler
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from io_scene_gltf2.io.com.gltf2_io_debug import print_console
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from io_scene_gltf2.io.com.gltf2_io_constants import TextureFilter, TextureWrap
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def make_texture_block(gltf, node_tree, tex_info, location, label, name=None, colorspace=None):
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"""Creates a block of Shader Nodes for the given TextureInfo.
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Will look like this:
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[UV Map] -> [Mapping] -> [Image Texture]
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The [Image Texture] node is placed at the given location.
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The [Image Texture] node is given the given label.
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The [Image Texture] node is returned.
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"""
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# Image Texture (samples image)
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tex_img = node_tree.nodes.new('ShaderNodeTexImage')
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if name:
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tex_img.name = name + '.tex_img'
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tex_img.location = location
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tex_img.label = label
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pytexture = gltf.data.textures[tex_info.index]
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if pytexture.source is not None:
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BlenderImage.create(gltf, pytexture.source)
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pyimg = gltf.data.images[pytexture.source]
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blender_image_name = pyimg.blender_image_name
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if blender_image_name:
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tex_img.image = bpy.data.images[blender_image_name]
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if colorspace == 'NONE':
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if tex_img.image:
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tex_img.image.colorspace_settings.is_data = True
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if pytexture.sampler is not None:
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pysampler = gltf.data.samplers[pytexture.sampler]
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else:
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pysampler = Sampler.from_dict({})
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set_filtering(tex_img, pysampler)
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set_wrap_mode(tex_img, pysampler)
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# Mapping (transforms UVs for KHR_texture_transform)
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mapping = node_tree.nodes.new('ShaderNodeMapping')
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if name:
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mapping.name = name + '.mapping'
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mapping.location = location[0] - 500, location[1]
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mapping.vector_type = 'POINT'
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if tex_info.extensions and 'KHR_texture_transform' in tex_info.extensions:
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transform = tex_info.extensions['KHR_texture_transform']
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transform = texture_transform_gltf_to_blender(transform)
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mapping.inputs['Location'].default_value[0] = transform['offset'][0]
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mapping.inputs['Location'].default_value[1] = transform['offset'][1]
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mapping.inputs['Rotation'].default_value[2] = transform['rotation']
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mapping.inputs['Scale'].default_value[0] = transform['scale'][0]
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mapping.inputs['Scale'].default_value[1] = transform['scale'][1]
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# UV Map (retrieves UV)
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uv_map = node_tree.nodes.new('ShaderNodeUVMap')
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if name:
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uv_map.name = name + '.uv_map'
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uv_map.location = location[0] - 1000, location[1]
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texcoord_idx = tex_info.tex_coord or 0
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if tex_info.extensions and 'KHR_texture_transform' in tex_info.extensions:
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if 'texCoord' in tex_info.extensions['KHR_texture_transform']:
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texcoord_idx = tex_info.extensions['KHR_texture_transform']['texCoord']
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uv_map.uv_map = 'UVMap' if texcoord_idx == 0 else 'UVMap.%03d' % texcoord_idx
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# Links
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node_tree.links.new(mapping.inputs[0], uv_map.outputs[0])
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node_tree.links.new(tex_img.inputs[0], mapping.outputs[0])
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return tex_img
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def set_filtering(tex_img, pysampler):
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"""Set the filtering/interpolation on an Image Texture from the glTf sampler."""
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minf = pysampler.min_filter
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magf = pysampler.mag_filter
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# Ignore mipmapping
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if minf in [TextureFilter.NearestMipmapNearest, TextureFilter.NearestMipmapLinear]:
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minf = TextureFilter.Nearest
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elif minf in [TextureFilter.LinearMipmapNearest, TextureFilter.LinearMipmapLinear]:
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minf = TextureFilter.Linear
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# If both are nearest or the only specified one was nearest, use nearest.
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if (minf, magf) in [
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(TextureFilter.Nearest, TextureFilter.Nearest),
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(TextureFilter.Nearest, None),
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(None, TextureFilter.Nearest),
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]:
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tex_img.interpolation = 'Closest'
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else:
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tex_img.interpolation = 'Linear'
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def set_wrap_mode(tex_img, pysampler):
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"""Set the extension on an Image Texture node from the pysampler."""
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wrap_s = pysampler.wrap_s
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wrap_t = pysampler.wrap_t
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if wrap_s is None:
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wrap_s = TextureWrap.Repeat
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if wrap_t is None:
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wrap_t = TextureWrap.Repeat
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# The extension property on the Image Texture node can only handle the case
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# where both directions are the same and are either REPEAT or CLAMP_TO_EDGE.
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if (wrap_s, wrap_t) == (TextureWrap.Repeat, TextureWrap.Repeat):
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extension = TextureWrap.Repeat
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elif (wrap_s, wrap_t) == (TextureWrap.ClampToEdge, TextureWrap.ClampToEdge):
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extension = TextureWrap.ClampToEdge
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else:
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print_console('WARNING',
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'texture wrap mode unsupported: (%s, %s)' % (wrap_name(wrap_s), wrap_name(wrap_t)),
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)
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# Default to repeat
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extension = TextureWrap.Repeat
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if extension == TextureWrap.Repeat:
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tex_img.extension = 'REPEAT'
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elif extension == TextureWrap.ClampToEdge:
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tex_img.extension = 'EXTEND'
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def wrap_name(wrap):
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if wrap == TextureWrap.ClampToEdge: return 'CLAMP_TO_EDGE'
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if wrap == TextureWrap.MirroredRepeat: return 'MIRRORED_REPEAT'
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if wrap == TextureWrap.Repeat: return 'REPEAT'
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return 'UNKNOWN (%s)' % wrap
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