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ScreenSpaceEffects.h
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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
// $NoKeywords: $
//
//=====================================================================================//
#ifndef SCREENSPACEEFFECTS_H
#define SCREENSPACEEFFECTS_H
#ifdef _WIN32
#pragma once
#endif
class KeyValues;
//------------------------------------------------------------------------------
// Simple base class for screen space post-processing effects
//------------------------------------------------------------------------------
abstract_class IScreenSpaceEffect
{
public:
virtual void Init( ) = 0;
virtual void Shutdown( ) = 0;
virtual void SetParameters( KeyValues *params ) = 0;
virtual void Render( int x, int y, int w, int h ) = 0;
virtual void Enable( bool bEnable ) = 0;
virtual bool IsEnabled( ) = 0;
};
//------------------------------------------------------------------------------
// Interface class for managing screen space post-processing effects
//------------------------------------------------------------------------------
abstract_class IScreenSpaceEffectManager
{
public:
virtual void InitScreenSpaceEffects( ) = 0;
virtual void ShutdownScreenSpaceEffects( ) = 0;
virtual IScreenSpaceEffect *GetScreenSpaceEffect( const char *pEffectName ) = 0;
virtual void SetScreenSpaceEffectParams( const char *pEffectName, KeyValues *params ) = 0;
virtual void SetScreenSpaceEffectParams( IScreenSpaceEffect *pEffect, KeyValues *params ) = 0;
virtual void EnableScreenSpaceEffect( const char *pEffectName ) = 0;
virtual void EnableScreenSpaceEffect( IScreenSpaceEffect *pEffect ) = 0;
virtual void DisableScreenSpaceEffect( const char *pEffectName ) = 0;
virtual void DisableScreenSpaceEffect( IScreenSpaceEffect *pEffect ) = 0;
virtual void DisableAllScreenSpaceEffects( ) = 0;
virtual void RenderEffects( int x, int y, int w, int h ) = 0;
};
extern IScreenSpaceEffectManager *g_pScreenSpaceEffects;
//-------------------------------------------------------------------------------------
// Registration class for adding screen space effects to the IScreenSpaceEffectManager
//-------------------------------------------------------------------------------------
class CScreenSpaceEffectRegistration
{
public:
CScreenSpaceEffectRegistration( const char *pName, IScreenSpaceEffect *pEffect );
const char *m_pEffectName;
IScreenSpaceEffect *m_pEffect;
CScreenSpaceEffectRegistration *m_pNext;
static CScreenSpaceEffectRegistration *s_pHead;
};
#define ADD_SCREENSPACE_EFFECT( CEffect, pEffectName ) CEffect pEffectName##_effect; \
CScreenSpaceEffectRegistration pEffectName##_reg( #pEffectName, &pEffectName##_effect );
#endif