Optical flow: AMD's notice on the Rust side too, and the SDK commit

optical_flow.rs follows ffx_opticalflow.cpp (passes, order, dispatch
sizes), so it keeps the SDK's copyright line and MIT notice like the WGSL
port; THIRD_PARTY_NOTICES names that file and links the SDK at the v1.1.4
commit, as CONTRIBUTING's rule on other projects' code asks.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

THIRD_PARTY_NOTICES.md

@@ -24,6 +24,9 @@ the same grid.
 
 `crates/horizon-client-render/src/gfx/frame_gen/optical_flow.wgsl` is a port to WGSL of the
 optical flow shaders of the [AMD FidelityFX SDK](https://github.com/GPUOpen-LibrariesAndSDKs/FidelityFX-SDK)
-1.1.4 (`sdk/include/FidelityFX/gpu/opticalflow`), Copyright (C) 2024 Advanced Micro Devices,
-Inc., under the MIT license, whose text heads the file. AMD and FidelityFX are AMD's
+1.1.4 (`sdk/include/FidelityFX/gpu/opticalflow`, at commit
+[c6efa6bf7f20](https://github.com/GPUOpen-LibrariesAndSDKs/FidelityFX-SDK/tree/c6efa6bf7f2027b3ec94f28578bb5965eabb9e55)),
+and `optical_flow.rs` follows the SDK's `sdk/src/components/opticalflow/ffx_opticalflow.cpp`
+(its passes, their order and their dispatch sizes). Copyright (C) 2024 Advanced Micro Devices,
+Inc., under the MIT license, whose text heads both files. AMD and FidelityFX are AMD's
 trademarks; Horizon is not affiliated with AMD.

crates/horizon-client-render/src/gfx/frame_gen/optical_flow.rs

@@ -1,3 +1,25 @@
+// This file is part of the FidelityFX SDK.
+//
+// Copyright (C) 2024 Advanced Micro Devices, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files(the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and /or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions :
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
 //! FSR 3.1's optical flow (AMD FidelityFX SDK 1.1.4, `ffx_opticalflow*`, MIT), ported to
 //! WGSL (`optical_flow.wgsl`): block motion between the previous frame's colour and this
 //! one's, and scene change detection, for frame interpolation (`interpolation.rs`).