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]>

tests/test_frame_completion.py

@@ -12,6 +12,9 @@ class FrameCompletionTests(unittest.TestCase):
         shim = (ROOT / 'tools/d4r_nvngx_shim.cpp').read_text()
         start = shim.index('static void release_split_frame(Feature* feature, uint32_t frame)\n{')
         end = shim.index('\nstatic void split_watchdog()', start)
+        # release_split_frame signals through this helper, defined after the engine network's exports
+        helper = shim.index('\nstatic VkResult signal_split_semaphore(Feature& feature, uint64_t value)\n{')
+        helper = shim[helper:shim.index('\n}\n', helper) + 3]
         source = r'''
 #include "d4r_frame_completion.h"
 #include <cassert>
@@ -25,7 +28,10 @@ struct Feature {
     D4rFrameCompletion splitCompletion;
     uint64_t splitSignalled = 0;
     int splitSemaphore = 1;
+    bool engineNetTimeline = false; // the Vulkan timeline of this test, not the native network's
+    int engineNet = 0;
 };
+static struct { int (*signalTimeline)(int, uint64_t) = nullptr; } g_engineNet;
 static uint64_t gpuTimeline = 0;
 static bool failSignal = false;
 static int signal(int, const VkSemaphoreSignalInfo* info) {
@@ -36,7 +42,7 @@ static int signal(int, const VkSemaphoreSignalInfo* info) {
 }
 static struct { int device = 1; decltype(&signal) signalSemaphore = signal; } g_vk;
 static void logf(const char*, ...) {}
-''' + shim[start:end] + r'''
+''' + helper + shim[start:end] + r'''
 int main() {
     Feature feature;
     feature.splitCompletion.admit(1); // still running on the CUDA worker