dolphin/Source/Plugins/Plugin_VideoMerge/Src/DX11/DX11_FramebufferManager.h

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// Copyright (C) 2003 Dolphin Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
#ifndef _DX11_FBMANAGER_D3D_H_
#define _DX11_FBMANAGER_D3D_H_
#include <list>
#include "DX11_D3DBase.h"
#include "../FramebufferManager.h"
namespace DX11
{
// On the GameCube, the game sends a request for the graphics processor to
// transfer its internal EFB (Embedded Framebuffer) to an area in GameCube RAM
// called the XFB (External Framebuffer). The size and location of the XFB is
// decided at the time of the copy, and the format is always YUYV. The video
// interface is given a pointer to the XFB, which will be decoded and
// displayed on the TV.
//
// There are two ways for Dolphin to emulate this:
//
// Real XFB mode:
//
// Dolphin will behave like the GameCube and encode the EFB to
// a portion of GameCube RAM. The emulated video interface will decode the data
// for output to the screen.
//
// Advantages: Behaves exactly like the GameCube.
// Disadvantages: Resolution will be limited.
//
// Virtual XFB mode:
//
// When a request is made to copy the EFB to an XFB, Dolphin
// will remember the RAM location and size of the XFB in a Virtual XFB list.
// The video interface will look up the XFB in the list and use the enhanced
// data stored there, if available.
//
// Advantages: Enables high resolution graphics, better than real hardware.
// Disadvantages: If the GameCube CPU writes directly to the XFB (which is
// possible but uncommon), the Virtual XFB will not capture this information.
// There may be multiple XFBs in GameCube RAM. This is the maximum number to
// virtualize.
struct XFBSource : public XFBSourceBase
{
XFBSource() : tex(NULL) {}
~XFBSource();
void CopyEFB(const TargetRectangle& efbSource);
D3DTexture2D* tex;
};
class FramebufferManager : public ::FramebufferManagerBase
{
friend struct XFBSource;
public:
FramebufferManager();
~FramebufferManager();
static D3DTexture2D* &GetEFBColorTexture();
static ID3D11Texture2D* &GetEFBColorStagingBuffer();
static D3DTexture2D* &GetEFBDepthTexture();
static D3DTexture2D* &GetEFBDepthReadTexture();
static ID3D11Texture2D* &GetEFBDepthStagingBuffer();
XFBSourceBase* CreateXFBSource(unsigned int target_width, unsigned int target_height);
private:
static void copyToRealXFB(u32 xfbAddr, u32 fbWidth, u32 fbHeight, const EFBRectangle& sourceRc);
static const XFBSource** getRealXFBSource(u32 xfbAddr, u32 fbWidth, u32 fbHeight, u32 &xfbCount);
static XFBSource m_realXFBSource; // used in real XFB mode
static struct EFB
{
D3DTexture2D* color_tex;
ID3D11Texture2D* color_staging_buf;
D3DTexture2D* depth_tex;
ID3D11Texture2D* depth_staging_buf;
D3DTexture2D* depth_read_texture;
} m_efb;
};
}
#endif