[D3D12] Make something buildable

src/xenia/ui/d3d12/d3d12_immediate_drawer.h

@@ -0,0 +1,72 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2018 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_UI_D3D12_D3D12_IMMEDIATE_DRAWER_H_
+#define XENIA_UI_D3D12_D3D12_IMMEDIATE_DRAWER_H_
+
+#include <deque>
+#include <memory>
+
+#include "xenia/ui/d3d12/command_list.h"
+#include "xenia/ui/d3d12/d3d12_api.h"
+#include "xenia/ui/d3d12/d3d12_context.h"
+#include "xenia/ui/immediate_drawer.h"
+
+namespace xe {
+namespace ui {
+namespace d3d12 {
+
+class D3D12ImmediateDrawer : public ImmediateDrawer {
+ public:
+  D3D12ImmediateDrawer(D3D12Context* graphics_context);
+  ~D3D12ImmediateDrawer() override;
+
+  bool Initialize();
+  void Shutdown();
+
+  std::unique_ptr<ImmediateTexture> CreateTexture(
+      uint32_t width, uint32_t height, ImmediateTextureFilter filter,
+      bool repeat, const uint8_t* data) override;
+  void UpdateTexture(ImmediateTexture* texture, const uint8_t* data) override;
+
+  void Begin(int render_target_width, int render_target_height) override;
+  void BeginDrawBatch(const ImmediateDrawBatch& batch) override;
+  void Draw(const ImmediateDraw& draw) override;
+  void EndDrawBatch() override;
+  void End();
+
+ private:
+  D3D12Context* context_ = nullptr;
+
+  enum class SamplerIndex {
+    kNearestClamp,
+    kLinearClamp,
+    kNearestRepeat,
+    kLinearRepeat,
+
+    kSamplerCount
+  };
+  ID3D12DescriptorHeap* sampler_heap_ = nullptr;
+  D3D12_CPU_DESCRIPTOR_HANDLE sampler_heap_cpu_start_;
+  D3D12_GPU_DESCRIPTOR_HANDLE sampler_heap_gpu_start_;
+
+  std::unique_ptr<CommandList> command_lists_[D3D12Context::kQueuedFrames] = {};
+
+  struct SubmittedTextureUpload {
+    ID3D12Resource* data_resource;
+    uint64_t frame;
+  };
+  std::deque<SubmittedTextureUpload> texture_uploads_submitted_;
+};
+
+}  // namespace d3d12
+}  // namespace ui
+}  // namespace xe
+
+#endif  // XENIA_UI_D3D12_D3D12_IMMEDIATE_DRAWER_H_