Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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//========= Copyright Valve Corporation, All rights reserved. ============//
#include "cbase.h"
#include "KeyValues.h"
#include "cdll_client_int.h"
#include "view_scene.h"
#include "viewrender.h"
#include "tier0/icommandline.h"
#include "materialsystem/imesh.h"
#include "materialsystem/imaterial.h"
#include "materialsystem/imaterialsystemhardwareconfig.h"
#include "materialsystem/imaterialvar.h"
#include "ScreenSpaceEffects.h"
// memdbgon must be the last include file in a .cpp file!!!
#include "tier0/memdbgon.h"
//------------------------------------------------------------------------------
// CScreenSpaceEffectRegistration code
// Used to register and effect with the IScreenSpaceEffectManager
//------------------------------------------------------------------------------
CScreenSpaceEffectRegistration *CScreenSpaceEffectRegistration::s_pHead = NULL;
CScreenSpaceEffectRegistration::CScreenSpaceEffectRegistration( const char *pName, IScreenSpaceEffect *pEffect )
{
m_pEffectName = pName;
m_pEffect = pEffect;
m_pNext = s_pHead;
s_pHead = this;
}
//------------------------------------------------------------------------------
// CScreenSpaceEffectManager - Implementation of IScreenSpaceEffectManager
//------------------------------------------------------------------------------
class CScreenSpaceEffectManager : public IScreenSpaceEffectManager
{
public:
virtual void InitScreenSpaceEffects( );
virtual void ShutdownScreenSpaceEffects( );
virtual IScreenSpaceEffect *GetScreenSpaceEffect( const char *pEffectName );
virtual void SetScreenSpaceEffectParams( const char *pEffectName, KeyValues *params );
virtual void SetScreenSpaceEffectParams( IScreenSpaceEffect *pEffect, KeyValues *params );
virtual void EnableScreenSpaceEffect( const char *pEffectName );
virtual void EnableScreenSpaceEffect( IScreenSpaceEffect *pEffect );
virtual void DisableScreenSpaceEffect( const char *pEffectName );
virtual void DisableScreenSpaceEffect( IScreenSpaceEffect *pEffect );
virtual void DisableAllScreenSpaceEffects( );
virtual void RenderEffects( int x, int y, int w, int h );
};
CScreenSpaceEffectManager g_ScreenSpaceEffectManager;
IScreenSpaceEffectManager *g_pScreenSpaceEffects = &g_ScreenSpaceEffectManager;
//---------------------------------------------------------------------------------------
// CScreenSpaceEffectManager::InitScreenSpaceEffects - Initialise all registered effects
//---------------------------------------------------------------------------------------
void CScreenSpaceEffectManager::InitScreenSpaceEffects( )
{
if ( CommandLine()->FindParm( "-filmgrain" ) )
{
GetScreenSpaceEffect( "filmgrain" )->Enable( true );
}
for( CScreenSpaceEffectRegistration *pReg=CScreenSpaceEffectRegistration::s_pHead; pReg!=NULL; pReg=pReg->m_pNext )
{
IScreenSpaceEffect *pEffect = pReg->m_pEffect;
if( pEffect )
{
bool bIsEnabled = pEffect->IsEnabled( );
pEffect->Init( );
pEffect->Enable( bIsEnabled );
}
}
}
//----------------------------------------------------------------------------------------
// CScreenSpaceEffectManager::ShutdownScreenSpaceEffects - Shutdown all registered effects
//----------------------------------------------------------------------------------------
void CScreenSpaceEffectManager::ShutdownScreenSpaceEffects( )
{
for( CScreenSpaceEffectRegistration *pReg=CScreenSpaceEffectRegistration::s_pHead; pReg!=NULL; pReg=pReg->m_pNext )
{
IScreenSpaceEffect *pEffect = pReg->m_pEffect;
if( pEffect )
{
pEffect->Shutdown( );
}
}
}
//---------------------------------------------------------------------------------------
// CScreenSpaceEffectManager::GetScreenSpaceEffect - Returns a point to the named effect
//---------------------------------------------------------------------------------------
IScreenSpaceEffect *CScreenSpaceEffectManager::GetScreenSpaceEffect( const char *pEffectName )
{
for( CScreenSpaceEffectRegistration *pReg=CScreenSpaceEffectRegistration::s_pHead; pReg!=NULL; pReg=pReg->m_pNext )
{
if( !Q_stricmp( pReg->m_pEffectName, pEffectName ) )
{
IScreenSpaceEffect *pEffect = pReg->m_pEffect;
return pEffect;
}
}
Warning( "Could not find screen space effect %s\n", pEffectName );
return NULL;
}
//---------------------------------------------------------------------------------------
// CScreenSpaceEffectManager::SetScreenSpaceEffectParams
// - Assign parameters to the specified effect
//---------------------------------------------------------------------------------------
void CScreenSpaceEffectManager::SetScreenSpaceEffectParams( const char *pEffectName, KeyValues *params )
{
IScreenSpaceEffect *pEffect = GetScreenSpaceEffect( pEffectName );
if( pEffect )
SetScreenSpaceEffectParams( pEffect, params );
}
void CScreenSpaceEffectManager::SetScreenSpaceEffectParams( IScreenSpaceEffect *pEffect, KeyValues *params )
{
if( pEffect )
pEffect->SetParameters( params );
}
//---------------------------------------------------------------------------------------
// CScreenSpaceEffectManager::EnableScreenSpaceEffect
// - Enables the specified effect
//---------------------------------------------------------------------------------------
void CScreenSpaceEffectManager::EnableScreenSpaceEffect( const char *pEffectName )
{
IScreenSpaceEffect *pEffect = GetScreenSpaceEffect( pEffectName );
if( pEffect )
EnableScreenSpaceEffect( pEffect );
}
void CScreenSpaceEffectManager::EnableScreenSpaceEffect( IScreenSpaceEffect *pEffect )
{
if( pEffect )
pEffect->Enable( true );
}
//---------------------------------------------------------------------------------------
// CScreenSpaceEffectManager::DisableScreenSpaceEffect
// - Disables the specified effect
//---------------------------------------------------------------------------------------
void CScreenSpaceEffectManager::DisableScreenSpaceEffect( const char *pEffectName )
{
IScreenSpaceEffect *pEffect = GetScreenSpaceEffect( pEffectName );
if( pEffect )
DisableScreenSpaceEffect( pEffect );
}
void CScreenSpaceEffectManager::DisableScreenSpaceEffect( IScreenSpaceEffect *pEffect )
{
if( pEffect )
pEffect->Enable( false );
}
//---------------------------------------------------------------------------------------
// CScreenSpaceEffectManager::DisableAllScreenSpaceEffects
// - Disables all registered screen space effects
//---------------------------------------------------------------------------------------
void CScreenSpaceEffectManager::DisableAllScreenSpaceEffects( )
{
for( CScreenSpaceEffectRegistration *pReg=CScreenSpaceEffectRegistration::s_pHead; pReg!=NULL; pReg=pReg->m_pNext )
{
IScreenSpaceEffect *pEffect = pReg->m_pEffect;
if( pEffect )
{
pEffect->Enable( false );
}
}
}
//---------------------------------------------------------------------------------------
// CScreenSpaceEffectManager::RenderEffects
// - Renders all registered screen space effects
//---------------------------------------------------------------------------------------
void CScreenSpaceEffectManager::RenderEffects( int x, int y, int w, int h )
{
for( CScreenSpaceEffectRegistration *pReg=CScreenSpaceEffectRegistration::s_pHead; pReg!=NULL; pReg=pReg->m_pNext )
{
IScreenSpaceEffect *pEffect = pReg->m_pEffect;
if( pEffect )
{
pEffect->Render( x, y, w, h );
}
}
}
//------------------------------------------------------------------------------
// Example post-processing effect
//------------------------------------------------------------------------------
class CExampleEffect : public IScreenSpaceEffect
{
public:
CExampleEffect( );
~CExampleEffect( );
void Init( );
void Shutdown( );
void SetParameters( KeyValues *params );
void Render( int x, int y, int w, int h );
void Enable( bool bEnable );
bool IsEnabled( );
private:
bool m_bEnable;
CMaterialReference m_Material;
};
ADD_SCREENSPACE_EFFECT( CExampleEffect, exampleeffect );
//------------------------------------------------------------------------------
// CExampleEffect constructor
//------------------------------------------------------------------------------
CExampleEffect::CExampleEffect( )
{
m_bEnable = false;
}
//------------------------------------------------------------------------------
// CExampleEffect destructor
//------------------------------------------------------------------------------
CExampleEffect::~CExampleEffect( )
{
}
//------------------------------------------------------------------------------
// CExampleEffect init
//------------------------------------------------------------------------------
void CExampleEffect::Init( )
{
// This is just example code, init your effect material here
//m_Material.Init( "engine/exampleeffect", TEXTURE_GROUP_OTHER );
m_bEnable = false;
}
//------------------------------------------------------------------------------
// CExampleEffect shutdown
//------------------------------------------------------------------------------
void CExampleEffect::Shutdown( )
{
m_Material.Shutdown();
}
//------------------------------------------------------------------------------
// CExampleEffect enable
//------------------------------------------------------------------------------
void CExampleEffect::Enable( bool bEnable )
{
// This is just example code, don't enable it
// m_bEnable = bEnable;
}
bool CExampleEffect::IsEnabled( )
{
return m_bEnable;
}
//------------------------------------------------------------------------------
// CExampleEffect SetParameters
//------------------------------------------------------------------------------
void CExampleEffect::SetParameters( KeyValues *params )
{
if( params->GetDataType( "example_param" ) == KeyValues::TYPE_STRING )
{
// ...
}
}
//------------------------------------------------------------------------------
// CExampleEffect render
//------------------------------------------------------------------------------
void CExampleEffect::Render( int x, int y, int w, int h )
{
if ( !IsEnabled() )
return;
// Render Effect
Rect_t actualRect;
UpdateScreenEffectTexture( 0, x, y, w, h, false, &actualRect );
ITexture *pTexture = GetFullFrameFrameBufferTexture( 0 );
CMatRenderContextPtr pRenderContext( materials );
pRenderContext->DrawScreenSpaceRectangle( m_Material, x, y, w, h,
actualRect.x, actualRect.y, actualRect.x+actualRect.width-1, actualRect.y+actualRect.height-1,
pTexture->GetActualWidth(), pTexture->GetActualHeight() );
}