[GPU] Primitive processor with Vulkan 1.0 base cases, 24-bit indices and clamping

src/xenia/gpu/d3d12/d3d12_primitive_processor.h

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+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2021 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_GPU_D3D12_D3D12_PRIMITIVE_PROCESSOR_H_
+#define XENIA_GPU_D3D12_D3D12_PRIMITIVE_PROCESSOR_H_
+
+#include <cstdint>
+#include <deque>
+#include <memory>
+
+#include "xenia/base/assert.h"
+#include "xenia/gpu/primitive_processor.h"
+#include "xenia/ui/d3d12/d3d12_api.h"
+#include "xenia/ui/d3d12/d3d12_upload_buffer_pool.h"
+
+namespace xe {
+namespace gpu {
+namespace d3d12 {
+
+class D3D12CommandProcessor;
+
+class D3D12PrimitiveProcessor final : public PrimitiveProcessor {
+ public:
+  D3D12PrimitiveProcessor(const RegisterFile& register_file, Memory& memory,
+                          TraceWriter& trace_writer,
+                          SharedMemory& shared_memory,
+                          D3D12CommandProcessor& command_processor)
+      : PrimitiveProcessor(register_file, memory, trace_writer, shared_memory),
+        command_processor_(command_processor) {}
+  ~D3D12PrimitiveProcessor();
+
+  bool Initialize();
+  void Shutdown(bool from_destructor = false);
+  void ClearCache() { frame_index_buffer_pool_->ClearCache(); }
+
+  void CompletedSubmissionUpdated();
+  void BeginSubmission();
+  void BeginFrame();
+  void EndFrame();
+
+  D3D12_GPU_VIRTUAL_ADDRESS GetBuiltinIndexBufferGpuAddress(
+      size_t handle) const {
+    assert_not_null(builtin_index_buffer_);
+    return D3D12_GPU_VIRTUAL_ADDRESS(builtin_index_buffer_gpu_address_ +
+                                     GetBuiltinIndexBufferOffsetBytes(handle));
+  }
+  D3D12_GPU_VIRTUAL_ADDRESS GetConvertedIndexBufferGpuAddress(
+      size_t handle) const {
+    return frame_index_buffers_[handle];
+  }
+
+ protected:
+  bool InitializeBuiltin16BitIndexBuffer(
+      uint32_t index_count,
+      std::function<void(uint16_t*)> fill_callback) override;
+
+  void* RequestHostConvertedIndexBufferForCurrentFrame(
+      xenos::IndexFormat format, uint32_t index_count, bool coalign_for_simd,
+      uint32_t coalignment_original_address,
+      size_t& backend_handle_out) override;
+
+ private:
+  D3D12CommandProcessor& command_processor_;
+
+  Microsoft::WRL::ComPtr<ID3D12Resource> builtin_index_buffer_;
+  D3D12_GPU_VIRTUAL_ADDRESS builtin_index_buffer_gpu_address_ = 0;
+  // Temporary buffer copied in the beginning of the first submission for
+  // uploading to builtin_index_buffer_, destroyed when the submission when it
+  // was uploaded is completed.
+  Microsoft::WRL::ComPtr<ID3D12Resource> builtin_index_buffer_upload_;
+  // UINT64_MAX means not uploaded yet and needs uploading in the first
+  // submission (if the upload buffer exists at all).
+  uint64_t builtin_index_buffer_upload_submission_ = UINT64_MAX;
+
+  std::unique_ptr<ui::d3d12::D3D12UploadBufferPool> frame_index_buffer_pool_;
+  // Indexed by the backend handles.
+  std::deque<D3D12_GPU_VIRTUAL_ADDRESS> frame_index_buffers_;
+};
+
+}  // namespace d3d12
+}  // namespace gpu
+}  // namespace xe
+
+#endif  // XENIA_GPU_D3D12_D3D12_PRIMITIVE_PROCESSOR_H_