Add support for up to 4 texture channels when importing meshes

#2667
2025-01-11 22:40:20 +01:00
parent 756ba0a533
commit a1c46d2e6e
31 changed files with 427 additions and 475 deletions
--- a/Source/Engine/ContentImporters/ImportModel.cpp
+++ b/Source/Engine/ContentImporters/ImportModel.cpp
@@ -132,7 +132,10 @@ void RepackMeshLightmapUVs(ModelData& data)
                {
                    Float2 uvOffset(entry.Slot->X * atlasSizeInv, entry.Slot->Y * atlasSizeInv);
                    Float2 uvScale(entry.Slot->Width * atlasSizeInv, entry.Slot->Height * atlasSizeInv);
-                    for (auto& uv : entry.Mesh->LightmapUVs)
+                    if (entry.Mesh->LightmapUVsIndex == -1)
+                        continue;
+                    auto& lightmapUVs = entry.Mesh->UVs[entry.Mesh->LightmapUVsIndex];
+                    for (auto& uv : lightmapUVs)
                    {
                        uv = uv * uvScale + uvOffset;
                    }