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Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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source-engine/game/client/portal/PortalRender.cpp

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add hl1,portal,dod source code
3 years ago
//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
// $NoKeywords: $
//===========================================================================//
#include "cbase.h"
#include "PortalRender.h"
#include "clienteffectprecachesystem.h"
#include "view.h"
#include "c_pixel_visibility.h"
#include "glow_overlay.h"
#include "portal_render_targets.h" //depth doubler
#include "materialsystem/itexture.h"
#include "toolframework/itoolframework.h"
#include "tier1/KeyValues.h"
#include "view_scene.h"
#include "viewrender.h"
#include "vprof.h"
CLIENTEFFECT_REGISTER_BEGIN( PrecachePortalDrawingMaterials )
CLIENTEFFECT_MATERIAL( "shadertest/wireframe" )
CLIENTEFFECT_MATERIAL( "engine/writez_model" )
CLIENTEFFECT_MATERIAL( "engine/TranslucentVertexColor" )
CLIENTEFFECT_REGISTER_END()
#define TEMP_DISABLE_PORTAL_VIS_QUERY
static ConVar r_forcecheapwater( "r_forcecheapwater", "0", FCVAR_CLIENTDLL | FCVAR_CHEAT, "Force all water to be cheap water, will show old renders if enabled after water has been seen" );
ConVar r_portal_use_stencils( "r_portal_use_stencils", "1", FCVAR_CLIENTDLL, "Render portal views using stencils (if available)" ); //draw portal views using stencil rendering
ConVar r_portal_stencil_depth( "r_portal_stencil_depth", "2", FCVAR_CLIENTDLL | FCVAR_ARCHIVE, "When using stencil views, this changes how many views within views we see" );
//-----------------------------------------------------------------------------
//
// Portal rendering management class
//
//-----------------------------------------------------------------------------
static CPortalRender s_PortalRender;
CPortalRender* g_pPortalRender = &s_PortalRender;
//-------------------------------------------
//Portal View ID Node helpers
//-------------------------------------------
CUtlVector<int> s_iFreedViewIDs; //when a view id node gets freed, it's primary view id gets added here
PortalViewIDNode_t *AllocPortalViewIDNode( int iChildLinkCount )
{
PortalViewIDNode_t *pNode = new PortalViewIDNode_t; //for now we just new/delete
int iFreedIDsCount = s_iFreedViewIDs.Count();
if( iFreedIDsCount != 0 )
{
pNode->iPrimaryViewID = s_iFreedViewIDs.Tail();
s_iFreedViewIDs.FastRemove( iFreedIDsCount - 1 );
}
else
{
static int iNewAllocationCounter = VIEW_ID_COUNT;
pNode->iPrimaryViewID = iNewAllocationCounter;
iNewAllocationCounter += 2; //2 to make room for skybox view ids
}
CMatRenderContextPtr pRenderContext( materials );
#ifndef TEMP_DISABLE_PORTAL_VIS_QUERY
pNode->occlusionQueryHandle = pRenderContext->CreateOcclusionQueryObject();
#endif
pNode->iOcclusionQueryPixelsRendered = -5;
pNode->iWindowPixelsAtQueryTime = 0;
pNode->fScreenFilledByPortalSurfaceLastFrame_Normalized = -1.0f;
if( iChildLinkCount != 0 )
{
pNode->ChildNodes.SetCount( iChildLinkCount );
memset( pNode->ChildNodes.Base(), NULL, sizeof( PortalViewIDNode_t * ) * iChildLinkCount );
}
return pNode;
}
void FreePortalViewIDNode( PortalViewIDNode_t *pNode )
{
for( int i = pNode->ChildNodes.Count(); --i >= 0; )
{
if( pNode->ChildNodes[i] != NULL )
FreePortalViewIDNode( pNode->ChildNodes[i] );
}
s_iFreedViewIDs.AddToTail( pNode->iPrimaryViewID );
CMatRenderContextPtr pRenderContext( materials );
#ifndef TEMP_DISABLE_PORTAL_VIS_QUERY
pRenderContext->DestroyOcclusionQueryObject( pNode->occlusionQueryHandle );
#endif
delete pNode; //for now we just new/delete
}
void IncreasePortalViewIDChildLinkCount( PortalViewIDNode_t *pNode )
{
for( int i = pNode->ChildNodes.Count(); --i >= 0; )
{
if( pNode->ChildNodes[i] != NULL )
IncreasePortalViewIDChildLinkCount( pNode->ChildNodes[i] );
}
pNode->ChildNodes.AddToTail( NULL );
}
void RemovePortalViewIDChildLinkIndex( PortalViewIDNode_t *pNode, int iRemoveIndex )
{
Assert( pNode->ChildNodes.Count() > iRemoveIndex );
if( pNode->ChildNodes[iRemoveIndex] != NULL )
{
FreePortalViewIDNode( pNode->ChildNodes[iRemoveIndex] );
pNode->ChildNodes[iRemoveIndex] = NULL;
}
//I know the current behavior for CUtlVector::FastRemove() is to move the tail into the removed index. But I need that behavior to be true in the future as well so I'm doing it explicitly
pNode->ChildNodes[iRemoveIndex] = pNode->ChildNodes.Tail();
pNode->ChildNodes.Remove( pNode->ChildNodes.Count() - 1 );
for( int i = pNode->ChildNodes.Count(); --i >= 0; )
{
if( pNode->ChildNodes[i] )
RemovePortalViewIDChildLinkIndex( pNode->ChildNodes[i], iRemoveIndex );
}
}
//-----------------------------------------------------------------------------
//
// Active Portal class
//
//-----------------------------------------------------------------------------
CPortalRenderable::CPortalRenderable( void ) :
m_bIsPlaybackPortal( false )
{
m_matrixThisToLinked.Identity();
//Portal view ID indexing setup
IncreasePortalViewIDChildLinkCount( &s_PortalRender.m_HeadPortalViewIDNode );
m_iPortalViewIDNodeIndex = s_PortalRender.m_AllPortals.AddToTail( this );
}
CPortalRenderable::~CPortalRenderable( void )
{
int iLast = s_PortalRender.m_AllPortals.Count() - 1;
//update the soon-to-be-transplanted portal's index
s_PortalRender.m_AllPortals[iLast]->m_iPortalViewIDNodeIndex = m_iPortalViewIDNodeIndex;
//I know the current behavior for CUtlVector::FastRemove() is to move the tail into the removed index. But I need that behavior to be true in the future as well so I'm doing it explicitly
s_PortalRender.m_AllPortals[m_iPortalViewIDNodeIndex] = s_PortalRender.m_AllPortals.Tail();
s_PortalRender.m_AllPortals.Remove( iLast );
RemovePortalViewIDChildLinkIndex( &s_PortalRender.m_HeadPortalViewIDNode, m_iPortalViewIDNodeIndex ); //does the same transplant operation as above to all portal view id nodes
}
void CPortalRenderable::BeginPortalPixelVisibilityQuery( void )
{
#ifndef TEMP_DISABLE_PORTAL_VIS_QUERY
return;
#endif
if( g_pPortalRender->ShouldUseStencilsToRenderPortals() ) //this function exists because we require help in texture mode, we need no assistance in stencil mode. Moreover, doing the query twice will probably fubar the results
return;
PortalViewIDNode_t *pCurrentPortalViewNode = g_pPortalRender->m_PortalViewIDNodeChain[g_pPortalRender->m_iViewRecursionLevel]->ChildNodes[m_iPortalViewIDNodeIndex];
if( pCurrentPortalViewNode )
{
CMatRenderContextPtr pRenderContext( materials );
pRenderContext->BeginOcclusionQueryDrawing( pCurrentPortalViewNode->occlusionQueryHandle );
int iX, iY, iWidth, iHeight;
pRenderContext->GetViewport( iX, iY, iWidth, iHeight );
pCurrentPortalViewNode->iWindowPixelsAtQueryTime = iWidth * iHeight;
}
}
void CPortalRenderable::EndPortalPixelVisibilityQuery( void )
{
#ifndef TEMP_DISABLE_PORTAL_VIS_QUERY
return;
#endif
if( g_pPortalRender->ShouldUseStencilsToRenderPortals() ) //this function exists because we require help in texture mode, we need no assistance in stencil mode. Moreover, doing the query twice will probably fubar the results
return;
PortalViewIDNode_t *pCurrentPortalViewNode = g_pPortalRender->m_PortalViewIDNodeChain[g_pPortalRender->m_iViewRecursionLevel]->ChildNodes[m_iPortalViewIDNodeIndex];
if( pCurrentPortalViewNode )
{
CMatRenderContextPtr pRenderContext( materials );
pRenderContext->EndOcclusionQueryDrawing( pCurrentPortalViewNode->occlusionQueryHandle );
}
}
//-----------------------------------------------------------------------------
// Constructor
//-----------------------------------------------------------------------------
CPortalRender::CPortalRender()
: m_MaterialsAccess( m_Materials )
{
m_iRemainingPortalViewDepth = 1; //let's portals know that they should do "end of the line" kludges to cover up that portals don't go infinitely recursive
m_iViewRecursionLevel = 0;
m_pRenderingViewForPortal = NULL;
m_pRenderingViewExitPortal = NULL;
m_PortalViewIDNodeChain[0] = &m_HeadPortalViewIDNode;
}
void CPortalRender::LevelInitPreEntity()
{
// refresh materials - not sure if this needs to be done every level
m_Materials.m_Wireframe.Init( "shadertest/wireframe", TEXTURE_GROUP_CLIENT_EFFECTS );
m_Materials.m_WriteZ_Model.Init( "engine/writez_model", TEXTURE_GROUP_CLIENT_EFFECTS );
m_Materials.m_TranslucentVertexColor.Init( "engine/TranslucentVertexColor", TEXTURE_GROUP_CLIENT_EFFECTS );
}
void CPortalRender::LevelShutdownPreEntity()
{
int nCount = m_RecordedPortals.Count();
for ( int i = 0; i < nCount; ++i )
{
delete m_RecordedPortals[i].m_pActivePortal;
}
m_RecordedPortals.RemoveAll();
}
//-----------------------------------------------------------------------------
// only use stencils when it's requested, and expensive water won't cause it to freak out
//-----------------------------------------------------------------------------
bool CPortalRender::ShouldUseStencilsToRenderPortals( ) const
{
// only use stencils when it's requested, and available
return r_portal_use_stencils.GetBool() && ( materials->StencilBufferBits() != 0 );
}
int CPortalRender::ShouldForceCheaperWaterLevel() const
{
if( r_forcecheapwater.GetBool() )
return 0;
if( m_iViewRecursionLevel > 0 )
{
if( portalrendertargets->GetWaterReflectionTextureForStencilDepth( m_iViewRecursionLevel ) == NULL )
return 0;
PortalViewIDNode_t *pPixelVisNode = m_PortalViewIDNodeChain[m_iViewRecursionLevel - 1]->ChildNodes[m_pRenderingViewForPortal->m_iPortalViewIDNodeIndex];
if( pPixelVisNode->fScreenFilledByPortalSurfaceLastFrame_Normalized >= 0.0f )
{
if( pPixelVisNode->fScreenFilledByPortalSurfaceLastFrame_Normalized < 0.005f )
return 0;
if( pPixelVisNode->fScreenFilledByPortalSurfaceLastFrame_Normalized < 0.02f )
return 1;
if( pPixelVisNode->fScreenFilledByPortalSurfaceLastFrame_Normalized < 0.05f )
return 2;
}
}
return 3;
}
bool CPortalRender::ShouldObeyStencilForClears() const
{
return (m_iViewRecursionLevel > 0) && ShouldUseStencilsToRenderPortals();
}
void CPortalRender::WaterRenderingHandler_PreReflection() const
{
if( (m_iViewRecursionLevel > 0) && ShouldUseStencilsToRenderPortals() )
{
CMatRenderContextPtr pRenderContext( materials );
pRenderContext->SetStencilEnable( false );
}
}
void CPortalRender::WaterRenderingHandler_PostReflection() const
{
if( (m_iViewRecursionLevel > 0) && ShouldUseStencilsToRenderPortals() )
{
CMatRenderContextPtr pRenderContext( materials );
pRenderContext->SetStencilEnable( true );
}
}
void CPortalRender::WaterRenderingHandler_PreRefraction() const
{
if( (m_iViewRecursionLevel > 0) && ShouldUseStencilsToRenderPortals() )
{
CMatRenderContextPtr pRenderContext( materials );
pRenderContext->SetStencilEnable( false );
}
}
void CPortalRender::WaterRenderingHandler_PostRefraction() const
{
if( (m_iViewRecursionLevel > 0) && ShouldUseStencilsToRenderPortals() )
{
CMatRenderContextPtr pRenderContext( materials );
pRenderContext->SetStencilEnable( true );
}
}
void Recursive_UpdatePortalPixelVisibility( PortalViewIDNode_t *pNode, IMatRenderContext *pRenderContext )
{
if( pNode->iWindowPixelsAtQueryTime > 0 )
{
if( pNode->iOcclusionQueryPixelsRendered < -1 )
{
//First couple queries. We seem to be getting bogus 0's on the first queries sometimes. ignore the results.
++pNode->iOcclusionQueryPixelsRendered;
pNode->fScreenFilledByPortalSurfaceLastFrame_Normalized = -1.0f;
}
else
{
pNode->iOcclusionQueryPixelsRendered = pRenderContext->OcclusionQuery_GetNumPixelsRendered( pNode->occlusionQueryHandle );
pNode->fScreenFilledByPortalSurfaceLastFrame_Normalized = ((float)pNode->iOcclusionQueryPixelsRendered) / ((float)pNode->iWindowPixelsAtQueryTime);
}
}
else
{
pNode->fScreenFilledByPortalSurfaceLastFrame_Normalized = -1.0f;
}
pNode->iWindowPixelsAtQueryTime = 0;
for( int i = pNode->ChildNodes.Count(); --i >= 0; )
{
PortalViewIDNode_t *pChildNode = pNode->ChildNodes[i];
if( pChildNode )
Recursive_UpdatePortalPixelVisibility( pChildNode, pRenderContext );
}
}
void CPortalRender::UpdatePortalPixelVisibility( void )
{
#ifndef TEMP_DISABLE_PORTAL_VIS_QUERY
return;
#endif
if( m_iViewRecursionLevel != 0 )
return;
IMatRenderContext *pRenderContext = materials->GetRenderContext();
//CMatRenderContextPtr pRenderContext( materials );
for( int i = m_HeadPortalViewIDNode.ChildNodes.Count(); --i >= 0; )
{
PortalViewIDNode_t *pChildNode = m_HeadPortalViewIDNode.ChildNodes[i];
if( pChildNode )
Recursive_UpdatePortalPixelVisibility( pChildNode, pRenderContext );
}
}
//-----------------------------------------------------------------------------
// Purpose: Invalidates pixel visibility data for all portals for this next frame.
//-----------------------------------------------------------------------------
void Recursive_InvalidatePortalPixelVis( PortalViewIDNode_t *pNode )
{
pNode->fScreenFilledByPortalSurfaceLastFrame_Normalized = -1.0f;
pNode->iOcclusionQueryPixelsRendered = -5;
pNode->iWindowPixelsAtQueryTime = 0;
for( int i = pNode->ChildNodes.Count(); --i >= 0; )
{
PortalViewIDNode_t *pChildNode = pNode->ChildNodes[i];
if( pChildNode )
Recursive_InvalidatePortalPixelVis( pChildNode );
}
}
//-----------------------------------------------------------------------------
// Purpose: Preserves pixel visibility data when view id's are getting swapped around
//-----------------------------------------------------------------------------
void CPortalRender::EnteredPortal( CPortalRenderable *pEnteredPortal )
{
CPortalRenderable *pExitPortal = pEnteredPortal->GetLinkedPortal();
Assert( pExitPortal != NULL );
if ( pExitPortal == NULL )
return;
int iNodeLinkCount = m_HeadPortalViewIDNode.ChildNodes.Count();
PortalViewIDNode_t *pNewHead = m_HeadPortalViewIDNode.ChildNodes[pEnteredPortal->m_iPortalViewIDNodeIndex];
m_HeadPortalViewIDNode.ChildNodes[pEnteredPortal->m_iPortalViewIDNodeIndex] = NULL;
//Create a new node that will preserve main's visibility. This new node will be linked to the new head node at the exit portal's index (imagine entering a portal walking backwards)
PortalViewIDNode_t *pExitPortalsNewNode = AllocPortalViewIDNode( iNodeLinkCount );
{
for( int i = 0; i != iNodeLinkCount; ++i )
{
pExitPortalsNewNode->ChildNodes[i] = m_HeadPortalViewIDNode.ChildNodes[i];
m_HeadPortalViewIDNode.ChildNodes[i] = NULL;
}
PixelVisibility_ShiftVisibilityViews( VIEW_MAIN, pExitPortalsNewNode->iPrimaryViewID );
PixelVisibility_ShiftVisibilityViews( VIEW_3DSKY, pExitPortalsNewNode->iPrimaryViewID + 1 );
}
if( pNewHead ) //it's possible we entered a portal we couldn't see through
{
Assert( pNewHead->ChildNodes.Count() == m_HeadPortalViewIDNode.ChildNodes.Count() );
Assert( pNewHead->ChildNodes[pExitPortal->m_iPortalViewIDNodeIndex] == NULL ); //seeing out of an exit portal back into itself should be impossible
for( int i = 0; i != iNodeLinkCount; ++i )
{
m_HeadPortalViewIDNode.ChildNodes[i] = pNewHead->ChildNodes[i];
pNewHead->ChildNodes[i] = NULL; //going to be freeing the node in a minute, don't want to kill transplanted children
}
//Since the primary views will always be 0 and 1, we have to shift results instead of replacing the id's
PixelVisibility_ShiftVisibilityViews( pNewHead->iPrimaryViewID, VIEW_MAIN );
PixelVisibility_ShiftVisibilityViews( pNewHead->iPrimaryViewID + 1, VIEW_3DSKY );
FreePortalViewIDNode( pNewHead );
}
Assert( m_HeadPortalViewIDNode.ChildNodes[pExitPortal->m_iPortalViewIDNodeIndex] == NULL ); //asserted above in pNewHead code, but call me paranoid
m_HeadPortalViewIDNode.ChildNodes[pExitPortal->m_iPortalViewIDNodeIndex] = pExitPortalsNewNode;
//Because pixel visibility is based off of *last* frame's visibility. We can get cases where a certain portal
//wasn't visible last frame, but is takes up most of the screen this frame.
//Set all portal pixel visibility to unknown visibility.
for( int i = m_HeadPortalViewIDNode.ChildNodes.Count(); --i >= 0; )
{
PortalViewIDNode_t *pChildNode = m_HeadPortalViewIDNode.ChildNodes[i];
if( pChildNode )
Recursive_InvalidatePortalPixelVis( pChildNode );
}
}
bool CPortalRender::DrawPortalsUsingStencils( CViewRender *pViewRender )
{
VPROF( "CPortalRender::DrawPortalsUsingStencils" );
if( !ShouldUseStencilsToRenderPortals() )
return false;
int iDrawFlags = pViewRender->GetDrawFlags();
if ( (iDrawFlags & DF_RENDER_REFLECTION) != 0 )
return false;
if ( ((iDrawFlags & DF_CLIP_Z) != 0) && ((iDrawFlags & DF_CLIP_BELOW) == 0) ) //clipping above the water height
return false;
int iNumRenderablePortals = m_ActivePortals.Count();
// This loop is necessary because tools can suppress rendering without telling the portal system
CUtlVector< CPortalRenderable* > actualActivePortals( 0, iNumRenderablePortals );
for ( int i = 0; i < iNumRenderablePortals; ++i )
{
CPortalRenderable *pPortalRenderable = m_ActivePortals[i];
C_BaseEntity *pPairedEntity = pPortalRenderable->PortalRenderable_GetPairedEntity();
bool bIsVisible = (pPairedEntity == NULL) || (pPairedEntity->IsVisible() && pPairedEntity->ShouldDraw()); //either unknown visibility or definitely visible.
if ( !pPortalRenderable->m_bIsPlaybackPortal )
{
if ( !bIsVisible )
{
//can't see through the portal, free up it's view id node for use elsewhere
if( m_PortalViewIDNodeChain[m_iViewRecursionLevel]->ChildNodes[pPortalRenderable->m_iPortalViewIDNodeIndex] != NULL )
{
FreePortalViewIDNode( m_PortalViewIDNodeChain[m_iViewRecursionLevel]->ChildNodes[pPortalRenderable->m_iPortalViewIDNodeIndex] );
m_PortalViewIDNodeChain[m_iViewRecursionLevel]->ChildNodes[pPortalRenderable->m_iPortalViewIDNodeIndex] = NULL;
}
continue;
}
}
actualActivePortals.AddToTail( m_ActivePortals[i] );
}
iNumRenderablePortals = actualActivePortals.Count();
if( iNumRenderablePortals == 0 )
return false;
const int iMaxDepth = MIN( r_portal_stencil_depth.GetInt(), MIN( MAX_PORTAL_RECURSIVE_VIEWS, (1 << materials->StencilBufferBits()) ) - 1 );
if( m_iViewRecursionLevel >= iMaxDepth ) //can't support any more views
{
m_iRemainingPortalViewDepth = 0; //special case handler for max depth 0 cases
for( int i = 0; i != iNumRenderablePortals; ++i )
{
CPortalRenderable *pCurrentPortal = actualActivePortals[i];
pCurrentPortal->DrawPortal();
}
return false;
}
m_iRemainingPortalViewDepth = (iMaxDepth - m_iViewRecursionLevel) - 1;
CMatRenderContextPtr pRenderContext( materials );
pRenderContext->Flush( true ); //to prevent screwing up the last opaque object
//queued mode makes us pass the barrier of just noticeable difference when using a previous frame's occlusion as a draw skip check
bool bIsQueuedMode = (materials->GetThreadMode() == MATERIAL_QUEUED_THREADED);
const CViewSetup *pViewSetup = pViewRender->GetViewSetup();
m_RecursiveViewSetups[m_iViewRecursionLevel] = *pViewSetup;
CViewSetup ViewBackup;// = *pViewSetup; //backup the view, we'll need to restore it
memcpy( &ViewBackup, pViewSetup, sizeof( CViewSetup ) );
Vector ptCameraOrigin = pViewSetup->origin;
Vector vCameraForward;
AngleVectors( pViewSetup->angles, &vCameraForward, NULL, NULL );
int iX, iY, iWidth, iHeight;
pRenderContext->GetViewport( iX, iY, iWidth, iHeight );
#ifndef TEMP_DISABLE_PORTAL_VIS_QUERY
int iScreenPixelCount = iWidth * iHeight;
#endif
bool bRebuildDrawListsWhenDone = false;
int iParentLevelStencilReferenceValue = m_iViewRecursionLevel;
int iStencilReferenceValue = iParentLevelStencilReferenceValue + 1;
if( m_iViewRecursionLevel == 0 ) //first entry into the stencil drawing
{
pRenderContext->SetStencilEnable( true );
pRenderContext->SetStencilCompareFunction( STENCILCOMPARISONFUNCTION_ALWAYS );
pRenderContext->SetStencilPassOperation( STENCILOPERATION_REPLACE );
pRenderContext->SetStencilFailOperation( STENCILOPERATION_KEEP );
pRenderContext->SetStencilZFailOperation( STENCILOPERATION_KEEP );
pRenderContext->SetStencilTestMask( 0xFF );
pRenderContext->SetStencilWriteMask( 0xFF );
pRenderContext->SetStencilReferenceValue( 0 );
m_RecursiveViewComplexFrustums[0].RemoveAll(); //clear any garbage leftover in the complex frustums from last frame
}
if( m_RecursiveViewComplexFrustums[m_iViewRecursionLevel].Count() == 0 )
{
//nothing in the complex frustum from the current view, copy the standard frustum in
m_RecursiveViewComplexFrustums[m_iViewRecursionLevel].AddMultipleToTail( FRUSTUM_NUMPLANES, pViewRender->GetFrustum() );
}
for( int i = 0; i != iNumRenderablePortals; ++i )
{
CPortalRenderable *pCurrentPortal = actualActivePortals[i];
m_RecursiveViewComplexFrustums[m_iViewRecursionLevel + 1].RemoveAll(); //clear any previously stored complex frustum
if( (pCurrentPortal->GetLinkedPortal() == NULL) ||
(pCurrentPortal == m_pRenderingViewExitPortal) ||
(pCurrentPortal->ShouldUpdatePortalView_BasedOnView( *pViewSetup, m_RecursiveViewComplexFrustums[m_iViewRecursionLevel] ) == false) )
{
//can't see through the portal, free up it's view id node for use elsewhere
if( m_PortalViewIDNodeChain[m_iViewRecursionLevel]->ChildNodes[pCurrentPortal->m_iPortalViewIDNodeIndex] != NULL )
{
FreePortalViewIDNode( m_PortalViewIDNodeChain[m_iViewRecursionLevel]->ChildNodes[pCurrentPortal->m_iPortalViewIDNodeIndex] );
m_PortalViewIDNodeChain[m_iViewRecursionLevel]->ChildNodes[pCurrentPortal->m_iPortalViewIDNodeIndex] = NULL;
}
continue;
}
Assert( m_PortalViewIDNodeChain[m_iViewRecursionLevel]->ChildNodes.Count() > pCurrentPortal->m_iPortalViewIDNodeIndex );
if( m_PortalViewIDNodeChain[m_iViewRecursionLevel]->ChildNodes[pCurrentPortal->m_iPortalViewIDNodeIndex] == NULL )
m_PortalViewIDNodeChain[m_iViewRecursionLevel]->ChildNodes[pCurrentPortal->m_iPortalViewIDNodeIndex] = AllocPortalViewIDNode( m_HeadPortalViewIDNode.ChildNodes.Count() );
PortalViewIDNode_t *pCurrentPortalViewNode = m_PortalViewIDNodeChain[m_iViewRecursionLevel]->ChildNodes[pCurrentPortal->m_iPortalViewIDNodeIndex];
// Step 0, Allow for special effects to happen before cutting a hole
{
pRenderContext->SetStencilCompareFunction( STENCILCOMPARISONFUNCTION_EQUAL );
pRenderContext->SetStencilPassOperation( STENCILOPERATION_KEEP );
pRenderContext->SetStencilFailOperation( STENCILOPERATION_KEEP );
pRenderContext->SetStencilZFailOperation( STENCILOPERATION_KEEP );
pRenderContext->SetStencilReferenceValue( iParentLevelStencilReferenceValue );
pCurrentPortal->DrawPreStencilMask();
}
//step 1, write out the stencil values (and colors if you want, but really not necessary)
{
//pRenderContext->SetStencilCompareFunction( STENCILCOMPARISONFUNCTION_EQUAL );
pRenderContext->SetStencilPassOperation( STENCILOPERATION_INCR );
//pRenderContext->SetStencilFailOperation( STENCILOPERATION_KEEP );
//pRenderContext->SetStencilZFailOperation( STENCILOPERATION_KEEP );
//pRenderContext->SetStencilReferenceValue( iParentLevelStencilReferenceValue );
#ifndef TEMP_DISABLE_PORTAL_VIS_QUERY
pRenderContext->BeginOcclusionQueryDrawing( pCurrentPortalViewNode->occlusionQueryHandle );
pCurrentPortalViewNode->iWindowPixelsAtQueryTime = iScreenPixelCount;
#endif
pCurrentPortal->DrawStencilMask();
#ifndef TEMP_DISABLE_PORTAL_VIS_QUERY
pRenderContext->EndOcclusionQueryDrawing( pCurrentPortalViewNode->occlusionQueryHandle );
#endif
}
//see if we can skip the heavy lifting due to low visibility
if ( bIsQueuedMode || //don't use pixel visibly as a skip check in queued mode, the data is simply too old.
pCurrentPortal->ShouldUpdatePortalView_BasedOnPixelVisibility( pCurrentPortalViewNode->fScreenFilledByPortalSurfaceLastFrame_Normalized ) )
{
//step 2, clear the depth buffer in stencil areas so we can render a new scene to them
{
pRenderContext->SetStencilPassOperation( STENCILOPERATION_KEEP );
pRenderContext->SetStencilReferenceValue( iStencilReferenceValue );
pRenderContext->ClearBuffersObeyStencil( false, true );
}
//step 3, fill in stencil views (remember that in multiple depth situations that any subportals will run through this function again before this section completes, thereby screwing with stencil settings)
{
bRebuildDrawListsWhenDone = true;
MaterialFogMode_t fogModeBackup = pRenderContext->GetFogMode();
unsigned char fogColorBackup[4];
pRenderContext->GetFogColor( fogColorBackup );
float fFogStartBackup, fFogEndBackup, fFogZBackup;
pRenderContext->GetFogDistances( &fFogStartBackup, &fFogEndBackup, &fFogZBackup );
CGlowOverlay::BackupSkyOverlayData( m_iViewRecursionLevel );
Assert( m_PortalViewIDNodeChain[m_iViewRecursionLevel]->ChildNodes.Count() > pCurrentPortal->m_iPortalViewIDNodeIndex );
m_PortalViewIDNodeChain[m_iViewRecursionLevel + 1] = m_PortalViewIDNodeChain[m_iViewRecursionLevel]->ChildNodes[pCurrentPortal->m_iPortalViewIDNodeIndex];
pCurrentPortal->RenderPortalViewToBackBuffer( pViewRender, *pViewSetup );
m_PortalViewIDNodeChain[m_iViewRecursionLevel + 1] = NULL;
CGlowOverlay::RestoreSkyOverlayData( m_iViewRecursionLevel );
memcpy( (void *)pViewSetup, &ViewBackup, sizeof( CViewSetup ) );
pViewRender->m_pActiveRenderer->EnableWorldFog();
pRenderContext->FogMode( fogModeBackup );
pRenderContext->FogColor3ubv( fogColorBackup );
pRenderContext->FogStart( fFogStartBackup );
pRenderContext->FogEnd( fFogEndBackup );
pRenderContext->SetFogZ( fFogZBackup );
//do a full reset of what we think the stencil operations are in case the recursive calls got weird
pRenderContext->SetStencilCompareFunction( STENCILCOMPARISONFUNCTION_EQUAL );
pRenderContext->SetStencilPassOperation( STENCILOPERATION_KEEP );
pRenderContext->SetStencilFailOperation( STENCILOPERATION_KEEP );
pRenderContext->SetStencilZFailOperation( STENCILOPERATION_KEEP );
pRenderContext->SetStencilTestMask( 0xFF );
pRenderContext->SetStencilWriteMask( 0xFF );
pRenderContext->SetStencilReferenceValue( iStencilReferenceValue );
}
//step 4, patch up the fact that we just made a hole in the wall because it's not *really* a hole at all
{
pCurrentPortal->DrawPostStencilFixes();
}
}
//step 5, restore the stencil mask to the parent level
{
pRenderContext->SetStencilReferenceValue( iStencilReferenceValue );
pRenderContext->SetStencilCompareFunction( STENCILCOMPARISONFUNCTION_EQUAL );
pRenderContext->SetStencilPassOperation( STENCILOPERATION_DECR );
pRenderContext->SetStencilFailOperation( STENCILOPERATION_KEEP );
pRenderContext->SetStencilZFailOperation( STENCILOPERATION_KEEP );
pRenderContext->PerformFullScreenStencilOperation();
}
}
//step 6, go back to non-stencil rendering mode in preparation to resume normal scene rendering
if( m_iViewRecursionLevel == 0 )
{
Assert( m_pRenderingViewForPortal == NULL );
Assert( m_pRenderingViewExitPortal == NULL );
m_pRenderingViewExitPortal = NULL;
m_pRenderingViewForPortal = NULL;
pRenderContext->SetStencilEnable( false );
pRenderContext->SetStencilCompareFunction(STENCILCOMPARISONFUNCTION_NEVER);
pRenderContext->SetStencilPassOperation(STENCILOPERATION_KEEP);
pRenderContext->SetStencilFailOperation(STENCILOPERATION_KEEP);
pRenderContext->SetStencilZFailOperation(STENCILOPERATION_KEEP);
pRenderContext->SetStencilTestMask( 0xFF );
pRenderContext->SetStencilWriteMask( 0xFF );
pRenderContext->SetStencilReferenceValue( 0 );
m_RecursiveViewComplexFrustums[0].RemoveAll();
}
else
{
pRenderContext->SetStencilReferenceValue( iParentLevelStencilReferenceValue );
pRenderContext->SetStencilCompareFunction( STENCILCOMPARISONFUNCTION_EQUAL );
pRenderContext->SetStencilPassOperation( STENCILOPERATION_KEEP );
}
if( bRebuildDrawListsWhenDone )
{
memcpy( (void *)pViewSetup, &ViewBackup, sizeof( CViewSetup ) ); //if we don't restore this, the view is permanently altered (in mid render of an existing scene)
}
pRenderContext->Flush( true ); //just in case
++m_iRemainingPortalViewDepth;
for( int i = 0; i != iNumRenderablePortals; ++i )
{
CPortalRenderable *pCurrentPortal = actualActivePortals[i];
pCurrentPortal->DrawPortal();
}
return bRebuildDrawListsWhenDone;
}
#ifdef _DEBUG
extern bool g_bRenderingCameraView;
#endif
void CPortalRender::DrawPortalsToTextures( CViewRender *pViewRender, const CViewSetup &cameraView )
{
if( ShouldUseStencilsToRenderPortals() )
return;
/*if ( (pViewRender->GetDrawFlags() & DF_RENDER_REFLECTION) != 0 )
return;*/
m_iRemainingPortalViewDepth = 1;
m_iViewRecursionLevel = 0;
m_pRenderingViewForPortal = NULL;
m_pRenderingViewExitPortal = NULL;
m_RecursiveViewSetups[m_iViewRecursionLevel] = cameraView;
m_RecursiveViewComplexFrustums[0].RemoveAll(); //clear any garbage leftover in the complex frustums from last frame
m_RecursiveViewComplexFrustums[0].AddMultipleToTail( FRUSTUM_NUMPLANES, pViewRender->GetFrustum() );
#ifdef _DEBUG
g_bRenderingCameraView = true;
#endif
int iNumRenderablePortals = g_pPortalRender->m_ActivePortals.Count();
Vector ptCameraOrigin = cameraView.origin;
//an extraneous push to update the frustum
render->Push3DView( cameraView, 0, NULL, pViewRender->GetFrustum() );
for( int i = 0; i != iNumRenderablePortals; ++i )
{
CPortalRenderable *pCurrentPortal = g_pPortalRender->m_ActivePortals[i];
if( (pCurrentPortal->ShouldUpdatePortalView_BasedOnView( cameraView, m_RecursiveViewComplexFrustums[m_iViewRecursionLevel] ) == false) ||
(pCurrentPortal->GetLinkedPortal() == NULL) )
{
//can't see through the portal, free up it's view id node for use elsewhere
if( m_PortalViewIDNodeChain[m_iViewRecursionLevel]->ChildNodes[pCurrentPortal->m_iPortalViewIDNodeIndex] != NULL )
{
FreePortalViewIDNode( m_PortalViewIDNodeChain[m_iViewRecursionLevel]->ChildNodes[pCurrentPortal->m_iPortalViewIDNodeIndex] );
m_PortalViewIDNodeChain[m_iViewRecursionLevel]->ChildNodes[pCurrentPortal->m_iPortalViewIDNodeIndex] = NULL;
}
continue;
}
Assert( m_PortalViewIDNodeChain[m_iViewRecursionLevel]->ChildNodes.Count() > pCurrentPortal->m_iPortalViewIDNodeIndex );
if( m_PortalViewIDNodeChain[m_iViewRecursionLevel]->ChildNodes[pCurrentPortal->m_iPortalViewIDNodeIndex] == NULL )
m_PortalViewIDNodeChain[m_iViewRecursionLevel]->ChildNodes[pCurrentPortal->m_iPortalViewIDNodeIndex] = AllocPortalViewIDNode( m_HeadPortalViewIDNode.ChildNodes.Count() );
m_PortalViewIDNodeChain[m_iViewRecursionLevel + 1] = m_PortalViewIDNodeChain[m_iViewRecursionLevel]->ChildNodes[pCurrentPortal->m_iPortalViewIDNodeIndex];
pCurrentPortal->RenderPortalViewToTexture( pViewRender, cameraView );
m_PortalViewIDNodeChain[m_iViewRecursionLevel + 1] = NULL;
}
render->PopView( pViewRender->GetFrustum() );
m_iRemainingPortalViewDepth = 1;
m_iViewRecursionLevel = 0;
Assert( m_pRenderingViewForPortal == NULL );
Assert( m_pRenderingViewExitPortal == NULL );
m_pRenderingViewForPortal = NULL;
m_pRenderingViewExitPortal = NULL;
#ifdef _DEBUG
g_bRenderingCameraView = false;
#endif
}
void CPortalRender::AddPortal( CPortalRenderable *pPortal )
{
for( int i = m_ActivePortals.Count(); --i >= 0; )
{
if( m_ActivePortals[i] == pPortal )
return;
}
m_ActivePortals.AddToTail( pPortal );
}
void CPortalRender::RemovePortal( CPortalRenderable *pPortal )
{
for( int i = m_ActivePortals.Count(); --i >= 0; )
{
if( m_ActivePortals[i] == pPortal )
{
m_ActivePortals.FastRemove( i );
return;
}
}
}
//-----------------------------------------------------------------------------
// Are we currently rendering a portal?
//-----------------------------------------------------------------------------
bool CPortalRender::IsRenderingPortal() const
{
return m_pRenderingViewForPortal != NULL;
}
//-----------------------------------------------------------------------------
// Returns view recursion level
//-----------------------------------------------------------------------------
int CPortalRender::GetViewRecursionLevel() const
{
return m_iViewRecursionLevel;
}
//-----------------------------------------------------------------------------
//normalized for how many of the screen's possible pixels it takes up, less than zero indicates a lack of data from last frame
//-----------------------------------------------------------------------------
float CPortalRender::GetPixelVisilityForPortalSurface( const CPortalRenderable *pPortal ) const
{
PortalViewIDNode_t *pNode = m_PortalViewIDNodeChain[m_iViewRecursionLevel]->ChildNodes[pPortal->m_iPortalViewIDNodeIndex];
if( pNode )
return pNode->fScreenFilledByPortalSurfaceLastFrame_Normalized;
return -1.0f;
}
//-----------------------------------------------------------------------------
// Methods to query about the exit portal associated with the currently rendering portal
//-----------------------------------------------------------------------------
const Vector &CPortalRender::GetExitPortalFogOrigin() const
{
return m_pRenderingViewExitPortal->GetFogOrigin();
}
void CPortalRender::ShiftFogForExitPortalView() const
{
if ( m_pRenderingViewExitPortal )
{
m_pRenderingViewExitPortal->ShiftFogForExitPortalView();
}
}
void CPortalRenderable::ShiftFogForExitPortalView() const
{
CMatRenderContextPtr pRenderContext( materials );
float fFogStart, fFogEnd, fFogZ;
pRenderContext->GetFogDistances( &fFogStart, &fFogEnd, &fFogZ );
Vector vFogOrigin = GetFogOrigin();
Vector vCameraToExitPortal = vFogOrigin - CurrentViewOrigin();
float fDistModifier = vCameraToExitPortal.Dot( CurrentViewForward() );
fFogStart += fDistModifier;
fFogEnd += fDistModifier;
//fFogZ += something; //FIXME: find out what the hell to do with this
pRenderContext->FogStart( fFogStart );
pRenderContext->FogEnd( fFogEnd );
pRenderContext->SetFogZ( fFogZ );
}
SkyboxVisibility_t CPortalRender::IsSkyboxVisibleFromExitPortal() const
{
return m_pRenderingViewExitPortal->SkyBoxVisibleFromPortal();
}
bool CPortalRender::DoesExitPortalViewIntersectWaterPlane( float waterZ, int leafWaterDataID ) const
{
return m_pRenderingViewExitPortal->DoesExitViewIntersectWaterPlane( waterZ, leafWaterDataID );
}
//-----------------------------------------------------------------------------
// Returns the remaining number of portals to render within other portals
// lets portals know that they should do "end of the line" kludges to cover up that portals don't go infinitely recursive
//-----------------------------------------------------------------------------
int CPortalRender::GetRemainingPortalViewDepth() const
{
return m_iRemainingPortalViewDepth;
}
//-----------------------------------------------------------------------------
// Returns the current View IDs
//-----------------------------------------------------------------------------
int CPortalRender::GetCurrentViewId() const
{
Assert( m_PortalViewIDNodeChain[m_iViewRecursionLevel] != NULL );
#ifdef _DEBUG
for( int i = 0; i != m_iViewRecursionLevel; ++i )
{
Assert( m_PortalViewIDNodeChain[i]->iPrimaryViewID != m_PortalViewIDNodeChain[m_iViewRecursionLevel]->iPrimaryViewID );
}
#endif
return m_PortalViewIDNodeChain[m_iViewRecursionLevel]->iPrimaryViewID;
}
int CPortalRender::GetCurrentSkyboxViewId() const
{
Assert( m_PortalViewIDNodeChain[m_iViewRecursionLevel] != NULL );
return m_PortalViewIDNodeChain[m_iViewRecursionLevel]->iPrimaryViewID + 1;
}
void OverlayCameraRenderTarget( const char *pszMaterialName, float flX, float flY, float w, float h ); //implemented in view_scene.cpp
void CPortalRender::OverlayPortalRenderTargets( float w, float h )
{
OverlayCameraRenderTarget( "engine/debug_portal_1", 0,0, w,h );
OverlayCameraRenderTarget( "engine/debug_portal_2", w+10,0, w,h );
OverlayCameraRenderTarget( "engine/debug_water_reflect_0", 0, h+10, w,h );
OverlayCameraRenderTarget( "engine/debug_water_reflect_1", w+10, h+10, w,h );
OverlayCameraRenderTarget( "engine/debug_water_reflect_2", (w+10) * 2, h+10, w,h );
OverlayCameraRenderTarget( "engine/debug_water_refract_0", 0, (h+10) * 2, w,h );
OverlayCameraRenderTarget( "engine/debug_water_refract_1", w+10, (h+10) * 2, w,h );
OverlayCameraRenderTarget( "engine/debug_water_refract_2", (w+10) * 2, (h+10) * 2, w,h );
}
void CPortalRender::UpdateDepthDoublerTexture( const CViewSetup &viewSetup )
{
bool bShouldUpdate = false;
for( int i = m_ActivePortals.Count(); --i >= 0; )
{
CPortalRenderable *pPortal = m_ActivePortals[i];
if( pPortal->ShouldUpdateDepthDoublerTexture( viewSetup ) )
{
bShouldUpdate = true;
break;
}
}
if( bShouldUpdate )
{
Rect_t srcRect;
srcRect.x = viewSetup.x;
srcRect.y = viewSetup.y;
srcRect.width = viewSetup.width;
srcRect.height = viewSetup.height;
ITexture *pTexture = portalrendertargets->GetDepthDoublerTexture();
CMatRenderContextPtr pRenderContext( materials );
pRenderContext->CopyRenderTargetToTextureEx( pTexture, 0, &srcRect, NULL );
}
}
//-----------------------------------------------------------------------------
// Finds a recorded portal
//-----------------------------------------------------------------------------
int CPortalRender::FindRecordedPortalIndex( int nPortalId )
{
int nCount = m_RecordedPortals.Count();
for ( int i = 0; i < nCount; ++i )
{
if ( m_RecordedPortals[i].m_nPortalId == nPortalId )
return i;
}
return -1;
}
CPortalRenderable* CPortalRender::FindRecordedPortal( int nPortalId )
{
int nIndex = FindRecordedPortalIndex( nPortalId );
return ( nIndex >= 0 ) ? m_RecordedPortals[nIndex].m_pActivePortal : NULL;
}
CPortalRenderable* CPortalRender::FindRecordedPortal( IClientRenderable *pRenderable )
{
int nCount = m_RecordedPortals.Count();
for ( int i = 0; i < nCount; ++i )
{
if ( m_RecordedPortals[i].m_pPlaybackRenderable == pRenderable )
return m_RecordedPortals[i].m_pActivePortal;
}
return NULL;
}
//-----------------------------------------------------------------------------
// Handles a portal update message
//-----------------------------------------------------------------------------
void CPortalRender::HandlePortalPlaybackMessage( KeyValues *pKeyValues )
{
// Iterate through all the portal ids of all the portals in the keyvalues message
CUtlVector<int> foundIds;
for ( KeyValues *pCurr = pKeyValues->GetFirstTrueSubKey(); pCurr; pCurr = pCurr->GetNextTrueSubKey() )
{
// Create new area portals for those ids that don't exist
int nPortalId = pCurr->GetInt( "portalId" );
IClientRenderable *pRenderable = (IClientRenderable*)pCurr->GetPtr( "clientRenderable" );
int nIndex = FindRecordedPortalIndex( nPortalId );
if ( nIndex < 0 )
{
CPortalRenderable *pPortal = NULL;
const char *szType = pCurr->GetString( "portalType", "flatBasic" ); //"flatBasic" being the type commonly found in "Portal" mod
//search through registered creation functions for one that makes this type of portal
for( int i = m_PortalRenderableCreators.Count(); --i >= 0; )
{
if( FStrEq( szType, m_PortalRenderableCreators[i].portalType.String() ) )
{
pPortal = m_PortalRenderableCreators[i].creationFunc();
break;
}
}
if( pPortal == NULL )
{
AssertMsg( false, "Unable to find creation function for portal type." );
Warning( "CPortalRender::HandlePortalPlaybackMessage() unable to find creation function for portal type: %s\n", szType );
}
else
{
pPortal->m_bIsPlaybackPortal = true;
int k = m_RecordedPortals.AddToTail( );
m_RecordedPortals[k].m_pActivePortal = pPortal;
m_RecordedPortals[k].m_nPortalId = nPortalId;
m_RecordedPortals[k].m_pPlaybackRenderable = pRenderable;
AddPortal( pPortal );
}
}
else
{
m_RecordedPortals[nIndex].m_pPlaybackRenderable = pRenderable;
}
foundIds.AddToTail( nPortalId );
}
// Delete portals that didn't appear in the list
int nFoundCount = foundIds.Count();
int nCount = m_RecordedPortals.Count();
for ( int i = nCount; --i >= 0; )
{
int j;
for ( j = 0; j < nFoundCount; ++j )
{
if ( foundIds[j] == m_RecordedPortals[i].m_nPortalId )
break;
}
if ( j == nFoundCount )
{
RemovePortal( m_RecordedPortals[i].m_pActivePortal );
delete m_RecordedPortals[i].m_pActivePortal;
m_RecordedPortals.FastRemove(i);
}
}
// Iterate through all the portal ids of all the portals in the keyvalues message
for ( KeyValues *pCurr = pKeyValues->GetFirstTrueSubKey(); pCurr; pCurr = pCurr->GetNextTrueSubKey() )
{
// Update the state of the portals based on the recorded info
int nPortalId = pCurr->GetInt( "portalId" );
CPortalRenderable *pPortal = FindRecordedPortal( nPortalId );
Assert( pPortal );
pPortal->HandlePortalPlaybackMessage( pCurr );
}
// Make the portals update their internal state
/*nCount = m_RecordedPortals.Count();
for ( int i = 0; i < nCount; ++i )
{
m_RecordedPortals[i].m_pActivePortal->PortalMoved();
m_RecordedPortals[i].m_pActivePortal->ComputeLinkMatrix();
}*/
}
void CPortalRender::AddPortalCreationFunc( const char *szPortalType, PortalRenderableCreationFunc creationFunc )
{
#ifdef _DEBUG
for( int i = m_PortalRenderableCreators.Count(); --i >= 0; )
{
AssertMsg( FStrEq( m_PortalRenderableCreators[i].portalType.String(), szPortalType ) == false, "Multiple portal renderable creation functions for same type of portal renderable." );
}
#endif
PortalRenderableCreationFunction_t temp;
temp.creationFunc = creationFunc;
temp.portalType.Set( szPortalType );
m_PortalRenderableCreators.AddToTail( temp );
}
bool Recursive_IsPortalViewID( PortalViewIDNode_t *pNode, view_id_t id )
{
if ( pNode->iPrimaryViewID == id )
return true;
for( int i = pNode->ChildNodes.Count(); --i >= 0; )
{
PortalViewIDNode_t *pChildNode = pNode->ChildNodes[i];
if( pChildNode )
{
return Recursive_IsPortalViewID( pChildNode, id );
}
}
return false;
}
//-----------------------------------------------------------------------------
// Purpose: Tests the parameter view ID against ID's used by portal pixel vis queries
// Input : id - id tested against used portal view ids
// Output : Returns true if id matches an ID used by a portal, or it's recursive sub portals
//-----------------------------------------------------------------------------
bool CPortalRender::IsPortalViewID( view_id_t id )
{
if ( id == m_HeadPortalViewIDNode.iPrimaryViewID )
return true;
for ( int i = 0; i < MAX_PORTAL_RECURSIVE_VIEWS; ++i )
{
PortalViewIDNode_t* pNode = m_PortalViewIDNodeChain[i];
if ( pNode )
{
// recursively search child nodes, they get their own ids.
if ( Recursive_IsPortalViewID( pNode, id ) )
return true;
}
}
return false;
}