feat: add d4r inference engines and Windows parity tooling

Add native K/M/RR inference engines, HIP kernels, replay and validation
harnesses, and Windows DLSS setup and runtime support. Include GPU
profiling tools, build and packaging scripts, platform integration
patches, and implementation documentation.

scripts/windows/test-async-k.ps1

@@ -0,0 +1,84 @@
+[CmdletBinding()]
+param(
+    [string]$NgxCore, [string]$DlssDll, [string]$NativeRoot,
+    [string]$ZludaRoot, [string]$PackageRoot,
+    [string]$Resolution = '3840x2160',
+    [string]$InputResolution,
+    [switch]$ProfileGpuBoundary,
+    [switch]$ProfileKernelsDeferred,
+    [switch]$BatchInputCopies,
+    [ValidateSet('baseline','packed','unorm','depth-stencil')][string]$PixelProfile = 'depth-stencil',
+    [string]$OutputDirectory
+)
+$ErrorActionPreference = 'Stop'
+. (Join-Path $PSScriptRoot 'gpu-target.ps1')
+$repo = [IO.Path]::GetFullPath((Join-Path $PSScriptRoot '../..'))
+if (!$NgxCore) { $NgxCore = Join-Path $repo '_nvngx.dll' }
+if (!$DlssDll) { $DlssDll = Join-Path $repo 'nvngx_dlss.dll' }
+if (!$ZludaRoot) { $ZludaRoot = Join-Path $repo 'dist/zluda-windows-api-profile' }
+if (!$PackageRoot) { $PackageRoot = Join-Path $repo 'dist/windows-rdna4-command-list' }
+$GpuArch=Get-D4RGpuTarget $PackageRoot $null
+if (!$NativeRoot) { $NativeRoot = Join-Path $repo "build/native-k-$GpuArch" }
+if (!$OutputDirectory) { $OutputDirectory = Join-Path $repo ('test-results/async-k-' + (Get-Date -Format 'yyyyMMdd-HHmmss-fff')) }
+if ($Resolution -notmatch '^([0-9]+)x([0-9]+)$') { throw 'Resolution must be WIDTHxHEIGHT' }
+$width=$Matches[1]; $height=$Matches[2]
+New-Item -ItemType Directory -Force $OutputDirectory | Out-Null
+$settings = @{D4R_DIAG_BURST='1'; D4R_DIAG_RECREATE=$null; D4R_ASYNC_INTEROP=$null;
+    D4R_BATCH_INPUT_COPIES=$null;
+    D4R_ZLUDA_NATIVE_DIR=$NativeRoot; D4R_QUIET_API='1'; D4R_VALIDATE_OUTPUT='1';
+    D4R_PROFILE_STAGES='1'; D4R_ZLUDA_PROFILE=$null; D4R_ZLUDA_PROFILE_API=$null;
+    D4R_ZLUDA_PROFILE_DEFERRED=$(if ($ProfileKernelsDeferred) { '1' } else { $null });
+    D4R_ZLUDA_PROFILE_ALLOW_LEGACY=$(if ($ProfileKernelsDeferred) { '1' } else { $null });
+    D4R_ZLUDA_PROFILE_EVERY=$(if ($ProfileKernelsDeferred) { '1' } else { $null });
+    D4R_PROFILE_GPU_BOUNDARY=$(if ($ProfileGpuBoundary) { '1' } else { $null });
+    ZLUDA_CACHE_DIR=(Join-Path $repo 'build/zluda-cache-windows');
+    PYTHONPATH=(Join-Path $repo '.tools/python/vendor')}
+$old=@{}
+try {
+    foreach ($key in $settings.Keys) {
+        $old[$key]=[Environment]::GetEnvironmentVariable($key,'Process')
+        [Environment]::SetEnvironmentVariable($key,$settings[$key],'Process')
+    }
+    foreach ($mode in @('burst','recreate')) {
+        [Environment]::SetEnvironmentVariable('D4R_DIAG_RECREATE', $(if ($mode -eq 'recreate') { '1' } else { $null }), 'Process')
+        foreach ($variant in @('sync','async')) {
+            [Environment]::SetEnvironmentVariable('D4R_ASYNC_INTEROP', $(if ($variant -eq 'async') { '1' } else { $null }), 'Process')
+            [Environment]::SetEnvironmentVariable('D4R_BATCH_INPUT_COPIES', $(if ($BatchInputCopies -and $variant -eq 'async') { '1' } else { $null }), 'Process')
+            $output=Join-Path $OutputDirectory "$variant-$mode"
+            $arguments=@{RuntimeProfile='therock'; ZludaRoot=$ZludaRoot; PackageRoot=$PackageRoot;
+                NgxCore=$NgxCore; DlssDll=$DlssDll; NgxOnly=$true; NgxMode='d3d12'; NgxAbi='project-legacy';
+                Preset=11; NgxCreateFlags=11; NgxOutputResolution=$Resolution; RequireNativeNetwork=$true;
+                NgxInputResolution=$InputResolution;
+                CommandListBackend=$true; EarlyIndirectProbe=$true; PixelProfile=$PixelProfile;
+                BarrierMode='inherited-legacy'; Iterations=3; CaptureExceptions=$true; TimeoutSeconds=600;
+                OptiScalerDll=(Join-Path $repo 'dist/optiscaler-windows-d4r/OptiScaler.dll'); OutputDirectory=$output}
+            & (Join-Path $PSScriptRoot 'test-windows-rdna4.ps1') @arguments
+            if ($LASTEXITCODE) { throw "Failed $variant-$mode; logs: $output" }
+            if ($ProfileKernelsDeferred) {
+                $stderr=Get-Content -LiteralPath (Join-Path $output 'd3d12-evaluate-preset-11.stderr.log') -Raw
+                if ($stderr -match '(?m)^D4R_KERNEL_PROFILE .*serializing=1') { throw 'Unexpected serializing kernel profiler.' }
+                foreach ($layer in @('enc0','enc1','enc2','enc3','enc4','dec5','dec4','dec3','dec2','dec1','dec0')) {
+                    $pattern='(?m)^D4R_KERNEL_PROFILE(?:_INVALID)? kernel="dltss_pwin_' + $layer + '_layer" backend=native phase=main '
+                    $events=[regex]::Matches($stderr,$pattern)
+                    if ($events.Count -ne 3) { throw "Expected three collected $layer events for $variant-$mode, found $($events.Count)." }
+                }
+            }
+            if ($ProfileGpuBoundary -and $variant -eq 'async') {
+                $stdout=Get-Content -LiteralPath (Join-Path $output 'd3d12-evaluate-preset-11.stdout.log') -Raw
+                $timings=[regex]::Matches($stdout, '(?m)^D4R_GPU_BOUNDARY [^\r\n]*diagnostics_cpu_bytes=32 serializing=0\r?$')
+                if ($timings.Count -ne 3) { throw "Expected three completed GPU timing records for $variant-$mode, found $($timings.Count)." }
+            }
+        }
+        & python.exe (Join-Path $repo 'tools/windows/frame_compare.py') --reference (Join-Path $OutputDirectory "sync-$mode") --actual (Join-Path $OutputDirectory "async-$mode") --width $width --height $height --exact |
+            Tee-Object -FilePath (Join-Path $OutputDirectory "$mode-comparison.log")
+        if ($LASTEXITCODE) { throw "Async $mode output mismatch" }
+    }
+    @{passed=$true; architecture=$GpuArch; preset=11; resolution=$Resolution;
+        inputResolution=$InputResolution;
+        modes=@('burst','recreate'); framesPerMode=3; exactRgb=$true; gpuBoundaryTiming=[bool]$ProfileGpuBoundary;
+        deferredKernelTiming=[bool]$ProfileKernelsDeferred; batchInputs=[bool]$BatchInputCopies; pixelProfile=$PixelProfile} |
+        ConvertTo-Json | Set-Content -LiteralPath (Join-Path $OutputDirectory 'validation.json') -Encoding UTF8
+    Write-Host "PASS asynchronous K burst/recreate: $OutputDirectory"
+} finally {
+    foreach ($key in $old.Keys) { [Environment]::SetEnvironmentVariable($key,$old[$key],'Process') }
+}