d4r: official NVIDIA DLSS on AMD GPUs under Linux and Proton

scripts/build_bench_dlss_kernel.sh

@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+CXX="${CXX:-g++}"
+
+mkdir -p "$ROOT/build"
+"$CXX" -std=c++20 -O2 -Wall -Wextra \
+  "$ROOT/tools/bench_dlss_kernel.cpp" -ldl \
+  -o "$ROOT/build/bench_dlss_kernel"
+printf 'Built %s\n' "$ROOT/build/bench_dlss_kernel"