// 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/


// IMPORTANT: UI etc should modify g_Config. Graphics code should read g_ActiveConfig.
// The reason for this is to get rid of race conditions etc when the configuration
// changes in the middle of a frame. This is done by copying g_Config to g_ActiveConfig
// at the start of every frame. Noone should ever change members of g_ActiveConfig 
// directly.

#ifndef _PLUGIN_VIDEO_CONFIG_H_
#define _PLUGIN_VIDEO_CONFIG_H_

#include "Common.h"
#include "VideoCommon.h"

#include <string>

// Log in two categories, and save three other options in the same byte
#define CONF_LOG			1
#define CONF_PRIMLOG		2
#define CONF_SAVETEXTURES	4
#define CONF_SAVETARGETS	8
#define CONF_SAVESHADERS	16

enum MultisampleMode {
	MULTISAMPLE_OFF,
	MULTISAMPLE_2X,
	MULTISAMPLE_4X,
	MULTISAMPLE_8X,
	MULTISAMPLE_CSAA_8X,
	MULTISAMPLE_CSAA_8XQ,
	MULTISAMPLE_CSAA_16X,
	MULTISAMPLE_CSAA_16XQ,
};

enum AspectMode {
	ASPECT_AUTO = 0,
	ASPECT_FORCE_16_9 = 1,
	ASPECT_FORCE_4_3 = 2,
	ASPECT_STRETCH = 3,
};

class IniFile;

// NEVER inherit from this class.
struct VideoConfig
{
	VideoConfig();
	void Load(const char *ini_file);
	void GameIniLoad(const char *ini_file);
	void Save(const char *ini_file);
	void UpdateProjectionHack();

	// General
	bool bVSync;

	bool bNativeResolution, b2xResolution, bRunning;  // Should possibly be augmented with 2x, 4x native.
	bool bWidescreenHack;
	int iAspectRatio;
	bool bCrop;   // Aspect ratio controls.
	bool bUseXFB;
	bool bUseRealXFB;
	bool bAutoScale;  // Removes annoying borders without using XFB. Doesn't always work perfectly.
	bool bUseNativeMips;

	// OpenCL
	bool bEnableOpenCL;
	
	// Enhancements
	int iMultisampleMode;
	int iEFBScale;
	bool bForceFiltering;
	int iMaxAnisotropy;
	std::string sPostProcessingShader;

	// Information
	bool bShowFPS;
	bool bOverlayStats;
	bool bOverlayProjStats;
	bool bTexFmtOverlayEnable;
	bool bTexFmtOverlayCenter;
	bool bShowEFBCopyRegions;
	
	// Render
	bool bWireFrame;
	bool bDisableLighting;
	bool bDisableTexturing;
	bool bDstAlphaPass;
	bool bDisableFog;
	
	// Utility
	bool bDumpTextures;
	bool bHiresTextures;
	bool bDumpEFBTarget;
	bool bDumpFrames;
	bool bFreeLook;
	
	// Hacks
	bool bEFBAccessEnable;
	bool bEFBCopyDisable;  // should reverse polarity of this one :) true=disabled can be confusing
	bool bOSDHotKey;
	bool bHack;
	bool bCopyEFBToTexture;	
	bool bCopyEFBScaled;
	bool bSafeTextureCache;
	int iSafeTextureCache_ColorSamples;	
	bool bFIFOBPhack;
	int iFIFOWatermarkTightness;
	int iPhackvalue;
	bool bPhackvalue1, bPhackvalue2;
	float fhackvalue1, fhackvalue2;
	bool bProjHack1;
	float fAspectRatioHackW, fAspectRatioHackH;

	int iLog; // CONF_ bits
	int iSaveTargetId;
	
	//currently unused:
	int iCompileDLsLevel;
	bool bShowShaderErrors;

	// D3D only config, mostly to be merged into the above
	int iAdapter;

	// With this enabled, the plugin renders directly to the backbuffer. Many features are
	// disabled but it might be faster on really old GPUs.
	bool bSimpleFB;

	// Static config per API
	bool bAllowSignedBytes;
};

extern VideoConfig g_Config;
extern VideoConfig g_ActiveConfig;

// Called every frame.
void UpdateActiveConfig();

void ComputeDrawRectangle(int backbuffer_width, int backbuffer_height, bool flip, TargetRectangle *rc);

#endif  // _PLUGIN_VIDEO_CONFIG_H_