Engine: native presets K and M in the D3D12 shim, wider game coverage

A standalone Vulkan inference engine (engine/) for DLSS presets K and M that
runs from weights extracted from the user's own nvngx_dlss.dll, with d4r's
own input, network and reconstruction shaders or the native HIP network
layers, recorded into the game's command list by the shim. Opt-in
([Engine] Enabled / D4R_ENGINE=1); anything uncovered falls back to the
CUDA/ZLUDA path with the reason logged.

Byte-identical to NGX's CUDA backend under the phase-capable reference
(1706x960 -> 2560x1440, native HIP network, eleven frames, RX 9070 XT):
- K render- and display-resolution motion vectors, HDR and LDR
- K game-supplied exposure and automatic exposure with any pre-exposure
  and exposure scale (one residual: effective exposure exactly 2 or 4)
- K and M with the DLSS indicator's inverted-axis parameters
- M with any exposure settings (NGX ignores them for M)
K packages need the current compile_k.py (marker D4RO0003).

Also: HIP shared buffers are pooled across feature recreation (ROCm leaks
destroyed imports), hipnet.bin must match the preset, M-only games do not
load the K model, install_d4r_runtime.sh stages k, k-ldr, m, m-ldr with
hip/, the activation table has a generator (gen_activation_m.py), and
package_release.sh can bundle the engine's shaders (never its weights).

Signed-off-by: woutermans <[email protected]>

scripts/d4r_config.py

@@ -156,6 +156,16 @@ def main(argv):
             fail(f"[Interop] MarkerPollUs must be a number of microseconds, not {value!r}")
         env["D4R_SHIM_MARKER_POLL_US"] = value
 
+    value = flag("Engine", "Enabled")
+    env["D4R_ENGINE"] = "1" if value else "0"
+    if path_value("Engine", "ModelDir"):
+        env["D4R_ENGINE_MODEL_DIR"] = path_value("Engine", "ModelDir")
+    network = get("Engine", "Network")
+    if network is not None and network not in ("auto", "hip", "vulkan"):
+        fail("[Engine] Network must be auto, hip or vulkan")
+    if network in ("hip", "vulkan"):
+        env["D4R_ENGINE_NETWORK"] = network
+
     engine = path_value("Game", "EngineIni")
     cvars = get("Game", "Cvars")
     if engine and cvars: