diff --git a/src/rmodels.c b/src/rmodels.c index 0dc7572f1..246c2b0a3 100644 --- a/src/rmodels.c +++ b/src/rmodels.c @@ -4473,9 +4473,17 @@ static Model LoadOBJ(const char *fileName) for (int i = 0; i < 3; i++) model.meshes[meshIndex].vertices[localMeshVertexCount*3 + i] = objAttributes.vertices[vertIndex*3 + i]; - for (int i = 0; i < 3; i++) model.meshes[meshIndex].normals[localMeshVertexCount*3 + i] = objAttributes.normals[normalIndex*3 + i]; - for (int i = 0; i < 2; i++) model.meshes[meshIndex].texcoords[localMeshVertexCount*2 + i] = objAttributes.texcoords[texcordIndex*2 + i]; + if (objAttributes.normals != NULL && normalIndex != TINYOBJ_INVALID_INDEX && normalIndex >= 0) + { + for (int i = 0; i < 3; i++) model.meshes[meshIndex].normals[localMeshVertexCount*3 + i] = objAttributes.normals[normalIndex*3 + i]; + } + else + { + model.meshes[meshIndex].normals[localMeshVertexCount*3 + 0] = 0.0f; + model.meshes[meshIndex].normals[localMeshVertexCount*3 + 1] = 1.0f; + model.meshes[meshIndex].normals[localMeshVertexCount*3 + 2] = 0.0f; + } model.meshes[meshIndex].texcoords[localMeshVertexCount*2 + 1] = 1.0f - model.meshes[meshIndex].texcoords[localMeshVertexCount*2 + 1];