glTF exporter: Option to not export texture images
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@ -15,7 +15,7 @@
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bl_info = {
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'name': 'glTF 2.0 format',
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'author': 'Julien Duroure, Scurest, Norbert Nopper, Urs Hanselmann, Moritz Becher, Benjamin Schmithüsen, Jim Eckerlein, and many external contributors',
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"version": (1, 8, 16),
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"version": (1, 8, 17),
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'blender': (3, 1, 0),
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'location': 'File > Import-Export',
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'description': 'Import-Export as glTF 2.0',
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@ -160,10 +160,12 @@ class ExportGLTF2_Base:
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('JPEG', 'JPEG Format (.jpg)',
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'Save images as JPEGs. (Images that need alpha are saved as PNGs though.) '
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'Be aware of a possible loss in quality'),
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('NONE', 'None',
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'Don\'t export images.'),
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),
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description=(
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'Output format for images. PNG is lossless and generally preferred, but JPEG might be preferable for web '
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'applications due to the smaller file size'
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'applications due to the smaller file size. Alternatively they can be omitted if they are not needed'
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),
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default='AUTO'
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)
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@ -114,7 +114,10 @@ def __gather_emissive_factor(blender_material, export_settings):
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if emissive_socket is None:
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emissive_socket = gltf2_blender_get.get_socket_old(blender_material, "EmissiveFactor")
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if isinstance(emissive_socket, bpy.types.NodeSocket):
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factor = gltf2_blender_get.get_factor_from_socket(emissive_socket, kind='RGB')
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if export_settings['gltf_image_format'] != "NONE":
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factor = gltf2_blender_get.get_factor_from_socket(emissive_socket, kind='RGB')
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else:
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factor = gltf2_blender_get.get_const_from_default_value_socket(emissive_socket, kind='RGB')
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if factor is None and emissive_socket.is_linked:
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# In glTF, the default emissiveFactor is all zeros, so if an emission texture is connected,
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@ -53,7 +53,10 @@ def __gather_base_color_factor(blender_material, export_settings):
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alpha_socket = gltf2_blender_get.get_socket(blender_material, "Alpha")
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if isinstance(alpha_socket, bpy.types.NodeSocket):
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alpha = gltf2_blender_get.get_factor_from_socket(alpha_socket, kind='VALUE')
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if export_settings['gltf_image_format'] != "NONE":
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alpha = gltf2_blender_get.get_factor_from_socket(alpha_socket, kind='VALUE')
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else:
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alpha = gltf2_blender_get.get_const_from_default_value_socket(alpha_socket, kind='VALUE')
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base_color_socket = gltf2_blender_get.get_socket(blender_material, "Base Color")
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if base_color_socket is None:
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@ -61,7 +64,10 @@ def __gather_base_color_factor(blender_material, export_settings):
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if base_color_socket is None:
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base_color_socket = gltf2_blender_get.get_socket_old(blender_material, "BaseColorFactor")
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if isinstance(base_color_socket, bpy.types.NodeSocket):
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rgb = gltf2_blender_get.get_factor_from_socket(base_color_socket, kind='RGB')
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if export_settings['gltf_image_format'] != "NONE":
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rgb = gltf2_blender_get.get_factor_from_socket(base_color_socket, kind='RGB')
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else:
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rgb = gltf2_blender_get.get_const_from_default_value_socket(base_color_socket, kind='RGB')
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if rgb is None: rgb = [1.0, 1.0, 1.0]
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if alpha is None: alpha = 1.0
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@ -35,6 +35,7 @@ def gather_texture(
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:param export_settings: configuration of the export
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:return: a glTF 2.0 texture with sampler and source embedded (will be converted to references by the exporter)
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"""
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if not __filter_texture(blender_shader_sockets, export_settings):
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return None
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@ -56,6 +57,9 @@ def gather_texture(
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def __filter_texture(blender_shader_sockets, export_settings):
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# User doesn't want to export textures
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if export_settings['gltf_image_format'] == "NONE":
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return None
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return True
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@ -250,6 +250,15 @@ def get_factor_from_socket(socket, kind):
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return None
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def get_const_from_default_value_socket(socket, kind):
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if kind == 'RGB':
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if socket.type != 'RGBA': return None
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return list(socket.default_value)[:3]
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if kind == 'VALUE':
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if socket.type != 'VALUE': return None
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return socket.default_value
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return None
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def get_const_from_socket(socket, kind):
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if not socket.is_linked:
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