Advance native Windows RR integration, kernel tooling and local packaging

Implement native NGX feature-13 RR through a LUID-matched D3D12/Vulkan
shared-memory and timeline-fence bridge. Add owned parameter snapshots,
GPU resource lifetime handling, inherited/enhanced barriers, optional
guides, sampled input formats and depth-plane support with stencil
preservation. Separate RR initialization from the SR CUDA runtime and
expose explicit backend/model selection through player configuration.

Add synthetic bridge, snapshot and NGX lifecycle harnesses covering
camera/history/reset, parameter mutation, delayed submission, early
release, capability gating and unsupported-input rejection.

Add exact gfx11 D/E model generation, verified caches, versioned local
deployment with configuration backups, and isolated portable model
tools with pinned Python, NumPy and glslang dependencies.

Extend Windows K benchmarking and private native-cache selection.
Fix LLVM 22 emitter/helper compatibility and preserve exact-output
validation for local output-kernel optimization.

Add native FSR RR provider diagnostics, local development package
refresh tooling, installer/checker updates, FidelityFX headers and
Windows parity documentation.

Keep NVIDIA binaries, derived models and private optimized kernels out
of distributable packages. Native RR evidence remains synthetic;
game validation, FSR RR dispatch, installer integration and Linux
performance parity remain incomplete.

tests/windows/test_llvm22_ir.py

@@ -0,0 +1,53 @@
+import math
+from pathlib import Path
+import random
+import re
+import struct
+import sys
+import unittest
+
+sys.path.insert(0, str(Path(__file__).resolve().parents[2] / 'tools/windows'))
+from llvm22_ir import compatible_ir, float_hex
+
+
+class CompatibilityTests(unittest.TestCase):
+    def test_float_widening_preserves_finite_values(self):
+        rng = random.Random(22)
+        patterns = [rng.getrandbits(32) for _ in range(20000)]
+        patterns += [(sign << 31) | (exponent << 23) | mantissa
+                     for sign in (0, 1) for exponent in range(255)
+                     for mantissa in (0, 1, 0x3fffff, 0x400000, 0x7fffff)]
+        for bits in patterns:
+            value = struct.unpack('>f', bits.to_bytes(4, 'big'))[0]
+            if not math.isfinite(value):
+                continue
+            rendered = float_hex(re.match(r'(.*)', f'{bits:08X}'))
+            self.assertEqual(bytes.fromhex(rendered[2:]), struct.pack('>d', value))
+
+    def test_nan_payload_and_signaling_bit_preserved(self):
+        for source, expected in [('7F800001', '0x7FF0000020000000'),
+                                 ('FFC00001', '0xFFF8000020000000')]:
+            self.assertEqual(float_hex(re.match(r'(.*)', source)), expected)
+
+    def test_decimal_half_and_float(self):
+        result = compatible_ir('%a = fcmp ult float %x, 8.507060e+37\n'
+                               '%b = fmul half %h, 1.953130e-03\n')
+        self.assertIn('0x47D0000020000000', result)
+        self.assertIn('0xH1800', result)
+
+    def test_double_and_strings_not_rounded_to_float(self):
+        text = '%a = fmul double %x, 1.23456789012345e+00\n!0 = !{!"float 1.234567e+00"}\n'
+        self.assertEqual(compatible_ir(text), text)
+
+    def test_denormal_mode_and_conservative_promises(self):
+        result = compatible_ir('attributes #0 = { denormal_fpenv(dynamic) '
+                               'nocreateundeforpoison memory(read, target_mem: none) }\n'
+                               '%x = uitofp contract nneg i32 %v to double\n')
+        self.assertIn('"denormal-fp-math"="dynamic,dynamic"', result)
+        self.assertNotIn('nocreateundeforpoison', result)
+        self.assertNotIn('target_mem', result)
+        self.assertIn('uitofp nneg i32', result)
+
+
+if __name__ == '__main__':
+    unittest.main()

tests/windows/test_rr_deploy.py

@@ -0,0 +1,34 @@
+import sys
+from pathlib import Path
+import unittest
+
+sys.path.insert(0, str(Path(__file__).resolve().parents[2] / 'tools/windows'))
+from deploy_rr_model import select_native
+
+
+class ConfigSelectionTests(unittest.TestCase):
+    def test_comments_bom_and_crlf_survive(self):
+        source = b'\xef\xbb\xbf[DLSS]\r\nModel = K ; keep SR\r\n[RayReconstruction]\r\nBackend = off ; keep comment\r\nModelDir = auto # keep path note\r\n'
+        result = select_native(source, 'engine/rr-d-test')
+        self.assertEqual(result, source.replace(b'Backend = off', b'Backend = native').replace(b'ModelDir = auto', b'ModelDir = engine/rr-d-test'))
+        self.assertEqual(select_native(result, 'engine/rr-d-test'), result)
+
+    def test_missing_section_preserves_other_settings(self):
+        source = b'[DLSS]\nModel=M\n; custom note'
+        result = select_native(source, 'engine/rr-e-test')
+        self.assertTrue(result.startswith(source))
+        self.assertIn(b'[RayReconstruction]\nBackend = native\nModelDir = engine/rr-e-test\n', result)
+        self.assertEqual(select_native(result, 'engine/rr-e-test'), result)
+
+    def test_duplicate_sections_cannot_restore_old_selection(self):
+        source = b'[RayReconstruction]\nBackend=off\n[Other]\nKeep=yes\n[rayreconstruction]\nModelDir=old-model\n'
+        result = select_native(source, 'engine/rr-d-test')
+        self.assertNotIn(b'old-model', result)
+        self.assertNotIn(b'Backend=off', result)
+        self.assertEqual(result.count(b'engine/rr-d-test'), 2)
+        self.assertIn(b'[Other]\nKeep=yes\n', result)
+        self.assertEqual(select_native(result, 'engine/rr-d-test'), result)
+
+
+if __name__ == '__main__':
+    unittest.main()