From e890169e0a62d0d74f14c19e6074bff44dc22c45 Mon Sep 17 00:00:00 2001
From: Julien Duroure <julien.duroure@gmail.com>
Date: Wed, 28 Sep 2022 18:43:59 +0200
Subject: [PATCH] glTF exporter: clamp base color factor to [0,1], as hard rgb
values can be outside
---
io_scene_gltf2/__init__.py | 2 +-
.../gltf2_blender_gather_materials_pbr_metallic_roughness.py | 3 +++
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/io_scene_gltf2/__init__.py b/io_scene_gltf2/__init__.py
index b55692df2..a0e2b58ee 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 SchmithĂĽsen, Jim Eckerlein, and many external contributors',
- "version": (3, 4, 25),
+ "version": (3, 4, 26),
'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_pbr_metallic_roughness.py b/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_pbr_metallic_roughness.py
index a5929c05b..61e84b164 100755
--- a/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_pbr_metallic_roughness.py
+++ b/io_scene_gltf2/blender/exp/gltf2_blender_gather_materials_pbr_metallic_roughness.py
@@ -71,6 +71,9 @@ def __gather_base_color_factor(blender_material, export_settings):
if rgb is None: rgb = [1.0, 1.0, 1.0]
if alpha is None: alpha = 1.0
+ # Need to clamp between 0.0 and 1.0: Blender color can be outside this range
+ rgb = [max(min(c, 1.0), 0.0) for c in rgb]
+
rgba = [*rgb, alpha]
if rgba == [1, 1, 1, 1]: return None
--
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