Allow readback buffers to be used as resolve destination targets

NVIDIAGameWorks · Dec 12, 2024 · 14cd30e · 14cd30e
1 parent edfa604
commit 14cd30e
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/src/d3d12/d3d12-buffer.cpp b/src/d3d12/d3d12-buffer.cpp
@@ -122,6 +122,15 @@ namespace nvrhi::d3d12
                 break;
         }
 
+        // Allow readback buffers to be used as resolve destination targets
+        if ((buffer->desc.cpuAccess == CpuAccessMode::Read) && (d.initialState == ResourceStates::ResolveDest))
+        {
+            heapProps.Type = D3D12_HEAP_TYPE_CUSTOM;
+            heapProps.CPUPageProperty = D3D12_CPU_PAGE_PROPERTY_WRITE_BACK;
+            heapProps.MemoryPoolPreference = D3D12_MEMORY_POOL_L0;
+            initialState = D3D12_RESOURCE_STATE_RESOLVE_DEST;
+        }
+
         HRESULT res = m_Context.device->CreateCommittedResource(
             &heapProps,
             heapFlags,