From 93e3353f4bfe8bf857453e772d9ea8bff5acfbf4 Mon Sep 17 00:00:00 2001
From: suerey <313498985@qq.com>
Date: Tue, 24 Dec 2024 18:01:33 +0800
Subject: [PATCH 1/2] store factors of emissive and roughness

---
 readerwriter/LoadSceneGLTF.cpp | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/readerwriter/LoadSceneGLTF.cpp b/readerwriter/LoadSceneGLTF.cpp
index 6af8f96..744182b 100644
--- a/readerwriter/LoadSceneGLTF.cpp
+++ b/readerwriter/LoadSceneGLTF.cpp
@@ -793,9 +793,25 @@ namespace osgVerse
         }
 
         if (normalID >= 0) createTexture(ss, 1, uniformNames[1], _modelDef.textures[normalID]);
-        if (roughnessID >= 0) createTexture(ss, 3, uniformNames[3], _modelDef.textures[roughnessID]);
+        if (roughnessID >= 0)
+            createTexture(ss, 3, uniformNames[3], _modelDef.textures[roughnessID]);
+        else
+        {
+            osg::Texture2D* tex2D = createDefaultTextureForColor(osg::Vec4(
+                1.0, material.pbrMetallicRoughness.roughnessFactor,
+                material.pbrMetallicRoughness.metallicFactor, 1.0));
+            if (tex2D) ss->setTextureAttributeAndModes(3, tex2D);
+        }
         if (occlusionID >= 0) createTexture(ss, 4, uniformNames[4], _modelDef.textures[occlusionID]);
-        if (emissiveID >= 0) createTexture(ss, 5, uniformNames[5], _modelDef.textures[emissiveID]);
+        if (emissiveID >= 0)
+            createTexture(ss, 5, uniformNames[5], _modelDef.textures[emissiveID]);
+        else
+        {
+            osg::Texture2D* tex2D = createDefaultTextureForColor(osg::Vec4(
+                material.emissiveFactor[0], material.emissiveFactor[1],
+                material.emissiveFactor[2], 1.0));
+            if (tex2D) ss->setTextureAttributeAndModes(5, tex2D);
+        }
 
         if (material.alphaMode.compare("BLEND") == 0)
             ss->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
-- 
Gitee


From 6b4fd451ecda49f9634a7b685b380ce73cf909d6 Mon Sep 17 00:00:00 2001
From: suerey <313498985@qq.com>
Date: Thu, 26 Dec 2024 17:31:25 +0800
Subject: [PATCH 2/2] save glb material.doubleSided

---
 readerwriter/LoadSceneGLTF.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/readerwriter/LoadSceneGLTF.cpp b/readerwriter/LoadSceneGLTF.cpp
index 744182b..ea76006 100644
--- a/readerwriter/LoadSceneGLTF.cpp
+++ b/readerwriter/LoadSceneGLTF.cpp
@@ -812,7 +812,10 @@ namespace osgVerse
                 material.emissiveFactor[2], 1.0));
             if (tex2D) ss->setTextureAttributeAndModes(5, tex2D);
         }
-
+        if (material.doubleSided)
+            ss->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
+        else
+            ss->setMode(GL_CULL_FACE, osg::StateAttribute::ON);
         if (material.alphaMode.compare("BLEND") == 0)
             ss->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
         else
-- 
Gitee