Resource Management 8: placed resource sub-allocation.
- Adds d3d allocators (placed resource + heap).
- Support for heap tier 1 but only buffers.
- Suballocation optimization is enabled for allocations under 4MB.
BUG=dawn:27
Change-Id: I79177830670d1f322bbadf45f797415a3e9208d9
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/5680
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Bryan Bernhart <bryan.bernhart@intel.com>
diff --git a/src/dawn_native/d3d12/HeapAllocatorD3D12.h b/src/dawn_native/d3d12/HeapAllocatorD3D12.h
new file mode 100644
index 0000000..2c91333
--- /dev/null
+++ b/src/dawn_native/d3d12/HeapAllocatorD3D12.h
@@ -0,0 +1,42 @@
+// Copyright 2019 The Dawn Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef DAWNNATIVE_D3D12_HEAPALLOCATORD3D12_H_
+#define DAWNNATIVE_D3D12_HEAPALLOCATORD3D12_H_
+
+#include "dawn_native/MemoryAllocator.h"
+#include "dawn_native/d3d12/d3d12_platform.h"
+
+namespace dawn_native { namespace d3d12 {
+
+ class Device;
+
+ // Wrapper to allocate a D3D12 heap.
+ class HeapAllocator : public MemoryAllocator {
+ public:
+ HeapAllocator(Device* device, D3D12_HEAP_TYPE heapType, D3D12_HEAP_FLAGS heapFlags);
+ ~HeapAllocator() override = default;
+
+ ResultOrError<std::unique_ptr<ResourceHeapBase>> Allocate(uint64_t size) override;
+ void Deallocate(std::unique_ptr<ResourceHeapBase> allocation) override;
+
+ private:
+ Device* mDevice;
+ D3D12_HEAP_TYPE mHeapType;
+ D3D12_HEAP_FLAGS mHeapFlags;
+ };
+
+}} // namespace dawn_native::d3d12
+
+#endif // DAWNNATIVE_D3D12_HEAPALLOCATORD3D12_H_
\ No newline at end of file
