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| author | Julien Duroure <julien.duroure@gmail.com> | 2022-10-06 07:16:22 +0300 |
|---|---|---|
| committer | Julien Duroure <julien.duroure@gmail.com> | 2022-10-06 07:16:22 +0300 |
| commit | c71c092b75ef801bc94fd84be2bc14847dcc8857 (patch) | |
| tree | 3bffdef5b55bdff5eb56f95f72cd4c15a4b81e32 | |
| parent | 4814761082fe9d8aaa6402e436448eb57660a570 (diff) | |
glTF exporter: Fix division by zero when IOR is 1.0
| -rwxr-xr-x | io_scene_gltf2/__init__.py | 2 | ||||
| -rw-r--r-- | io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_specular.py | 10 |
2 files changed, 8 insertions, 4 deletions
diff --git a/io_scene_gltf2/__init__.py b/io_scene_gltf2/__init__.py index 8775084b..b70934fb 100755 --- a/io_scene_gltf2/__init__.py +++ b/io_scene_gltf2/__init__.py @@ -4,7 +4,7 @@ bl_info = { 'name': 'glTF 2.0 format', 'author': 'Julien Duroure, Scurest, Norbert Nopper, Urs Hanselmann, Moritz Becher, Benjamin Schmithüsen, Jim Eckerlein, and many external contributors', - "version": (3, 4, 32), + "version": (3, 4, 33), 'blender': (3, 3, 0), 'location': 'File > Import-Export', 'description': 'Import-Export as glTF 2.0', diff --git a/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_specular.py b/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_specular.py index 22414b13..9e0318ce 100644 --- a/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_specular.py +++ b/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_specular.py @@ -120,9 +120,13 @@ def export_specular(blender_material, export_settings): return np.array([c[0] / l, c[1] / l, c[2] / l]) f0_from_ior = ((ior - 1)/(ior + 1))**2 - tint_strength = (1 - specular_tint) + normalize(base_color) * specular_tint - specular_color = (1 - transmission) * (1 / f0_from_ior) * 0.08 * specular * tint_strength + transmission * tint_strength - specular_extension['specularColorFactor'] = list(specular_color) + if f0_from_ior == 0: + specular_color = [1.0, 1.0, 1.0] + else: + tint_strength = (1 - specular_tint) + normalize(base_color) * specular_tint + specular_color = (1 - transmission) * (1 / f0_from_ior) * 0.08 * specular * tint_strength + transmission * tint_strength + specular_color = list(specular_color) + specular_extension['specularColorFactor'] = specular_color else: if specular_not_linked and specular == BLENDER_SPECULAR and specular_tint_not_linked and specular_tint == BLENDER_SPECULAR_TINT: return None, None |