Fix sphere winding and viewport middle-pan input

2026-04-06 04:11:00 +08:00
parent 31d14abece
commit 3540dbc94d
4 changed files with 72 additions and 7 deletions
--- a/engine/src/Resources/BuiltinResources.cpp
+++ b/engine/src/Resources/BuiltinResources.cpp
@@ -865,7 +865,10 @@ LoadResult CreateBuiltinMeshResource(const Containers::String& path) {
            return LoadResult(Containers::String("Unsupported builtin mesh: ") + path);
    }

-    FlipTriangleWinding(buffers);
+    // The UV sphere generator already emits triangles in the runtime's front-face convention.
+    if (primitiveType != BuiltinPrimitiveType::Sphere) {
+        FlipTriangleWinding(buffers);
+    }

    Mesh* mesh = BuildMeshResource(path, GetBuiltinPrimitiveDisplayName(primitiveType), std::move(buffers));
    if (mesh == nullptr) {