nullvideo: initial release of null video backend

Source/Core/VideoBackends/Null/Render.h

@@ -0,0 +1,39 @@
+// Copyright 2015 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "VideoCommon/RenderBase.h"
+
+namespace Null
+{
+class Renderer : public ::Renderer
+{
+public:
+  Renderer();
+  ~Renderer();
+
+  void RenderText(const std::string& pstr, int left, int top, u32 color) override;
+  u32 AccessEFB(EFBAccessType type, u32 x, u32 y, u32 poke_data) override { return 0; }
+  void PokeEFB(EFBAccessType type, const EfbPokeData* points, size_t num_points) override {}
+  u16 BBoxRead(int index) override { return 0; }
+  void BBoxWrite(int index, u16 value) override {}
+  int GetMaxTextureSize() override { return 16 * 1024; }
+  TargetRectangle ConvertEFBRectangle(const EFBRectangle& rc) override;
+
+  void SwapImpl(u32 xfb_addr, u32 fb_width, u32 fb_stride, u32 fb_height, const EFBRectangle& rc,
+                float gamma) override;
+
+  void ClearScreen(const EFBRectangle& rc, bool colorEnable, bool alphaEnable, bool zEnable,
+                   u32 color, u32 z) override
+  {
+  }
+
+  void ReinterpretPixelData(unsigned int convtype) override {}
+  bool SaveScreenshot(const std::string& filename, const TargetRectangle& rc) override
+  {
+    return false;
+  }
+};
+}