nvpro_core notices for adapted path-tracer code

Source: https://github.com/nvpro-samples/nvpro_core
Comparison reference: bc19d6ac3ef62938d0ea0e099735878457ce1b6e
Full Apache-2.0 terms: LICENSE.md

nvvkhl/hdr_env.cpp
nvvkhl/shaders/dh_sky.h
nvvkhl/shaders/pbr_mat_eval.h
nvvkhl/shaders/pbr_mat_struct.h
nvvkhl/shaders/dh_scn_desc.h

/*
 * Copyright (c) 2022-2025, NVIDIA CORPORATION.  All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * SPDX-FileCopyrightText: Copyright (c) 2022-2025, NVIDIA CORPORATION.
 * SPDX-License-Identifier: Apache-2.0
 */

nvvkhl/shaders/func.h
nvvkhl/shaders/ggx.h
nvvkhl/shaders/random.h
nvvkhl/shaders/ray_util.h
nvvkhl/shaders/hdr_env_sampling.h

/*
 * Copyright (c) 2022-2024, NVIDIA CORPORATION.  All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * SPDX-FileCopyrightText: Copyright (c) 2022-2024, NVIDIA CORPORATION.
 * SPDX-License-Identifier: Apache-2.0
 */

nvvkhl/shaders/bsdf_functions.h

/*
 * Copyright (c) 2019-2025, NVIDIA CORPORATION.  All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * SPDX-FileCopyrightText: Copyright (c) 2019-2025, NVIDIA CORPORATION.
 * SPDX-License-Identifier: Apache-2.0
 */

nvvkhl/shaders/bsdf_structs.h
nvvkhl/shaders/vertex_accessor.h

/*
 * Copyright (c) 2023-2024, NVIDIA CORPORATION.  All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * SPDX-FileCopyrightText: Copyright (c) 2023-2024, NVIDIA CORPORATION.
 * SPDX-License-Identifier: Apache-2.0
 */

nvvkhl/shaders/dh_tonemap.h

/*
 * Copyright (c) 2022-2024, NVIDIA CORPORATION.  All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * SPDX-FileCopyrightText: Copyright (c) 2022-2024 NVIDIA CORPORATION
 * SPDX-License-Identifier: Apache-2.0
 */

Upstream acknowledgments retained for the adapted sky and BSDF code:
The physical sky is based on Mental Ray and the NVIDIA MDL SDK model.
The BSDFs are based on glTF 2.0 and NVIDIA MDL SDK implementations.
https://github.com/NVIDIA/MDL-SDK/blob/203d5140b1dee89de17b26e828c4333571878629/src/shaders/mdl/base/base.mdl
https://github.com/NVIDIA/MDL-SDK/blob/203d5140b1dee89de17b26e828c4333571878629/src/mdl/jit/libbsdf/libbsdf.cpp
