121 lines
5.7 KiB
C++
121 lines
5.7 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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// $NoKeywords: $
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//===========================================================================//
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#ifndef PORTALRENDERABLE_FLATBASIC_H
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#define PORTALRENDERABLE_FLATBASIC_H
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#ifdef _WIN32
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#pragma once
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#endif
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#include "PortalRender.h"
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struct PortalMeshPoint_t;
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#define PORTALRENDERFIXMESH_OUTERBOUNDPLANES 12
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struct FlatBasicPortalRenderingMaterials_t
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{
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CMaterialReference m_PortalMaterials[2];
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CMaterialReference m_PortalRenderFixMaterials[2];
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CMaterialReference m_PortalDepthDoubler;
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CMaterialReference m_PortalStaticOverlay[2];
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CMaterialReference m_Portal_Stencil_Hole;
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CMaterialReference m_Portal_Refract[2];
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//CTextureReference m_PortalLightTransfer_ShadowTexture; //light transfers disabled indefinitely
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IMaterialVar *m_pDepthDoubleViewMatrixVar;
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};
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//As seen in "Portal"
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class CPortalRenderable_FlatBasic : public C_BaseAnimating, public CPortalRenderable
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{
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DECLARE_CLASS( CPortalRenderable_FlatBasic, C_BaseAnimating );
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public:
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CPortalRenderable_FlatBasic( void );
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//generates a 8x6 tiled set of quads, each clipped to the view frustum. Helps vs11/ps11 portal shaders interpolate correctly. Not necessary for vs20/ps20 portal shaders or stencil mode.
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virtual void DrawComplexPortalMesh( const IMaterial *pMaterialOverride = NULL, float fForwardOffsetModifier = 0.25f );
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//generates a single quad
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virtual void DrawSimplePortalMesh( const IMaterial *pMaterialOverride = NULL, float fForwardOffsetModifier = 0.25f );
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//draws a screenspace mesh to replace missing pixels caused by the camera near plane intersecting the portal mesh
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virtual void DrawRenderFixMesh( const IMaterial *pMaterialOverride = NULL, float fFrontClipDistance = 0.3f );
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//When we're in a configuration that sees through recursive portal views to a depth of 2, we should be able to cheaply approximate even further depth using pixels from previous frames
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virtual void DrawDepthDoublerMesh( float fForwardOffsetModifier = 0.25f );
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virtual void DrawPortal( void );
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virtual void DrawPreStencilMask( void ); //Draw to wherever you can see through the portal. The mask will later be filled with the portal view.
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virtual void DrawStencilMask( void ); //Draw to wherever you can see through the portal. The mask will later be filled with the portal view.
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virtual void DrawPostStencilFixes( void ); //After done drawing to the portal mask, we need to fix the depth buffer as well as fog. So draw your mesh again, writing to z and with the fog color alpha'd in by distance
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virtual void RenderPortalViewToBackBuffer( CViewRender *pViewRender, const CViewSetup &cameraView );
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virtual void RenderPortalViewToTexture( CViewRender *pViewRender, const CViewSetup &cameraView );
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void AddToVisAsExitPortal( ViewCustomVisibility_t *pCustomVisibility );
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virtual bool ShouldUpdatePortalView_BasedOnView( const CViewSetup ¤tView, CUtlVector<VPlane> ¤tComplexFrustum ); //portal is both visible, and will display at least some portion of a remote view
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virtual bool ShouldUpdatePortalView_BasedOnPixelVisibility( float fScreenFilledByStencilMaskLastFrame_Normalized );
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virtual bool ShouldUpdateDepthDoublerTexture( const CViewSetup &viewSetup );
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virtual void GetToolRecordingState( bool bActive, KeyValues *msg );
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virtual void HandlePortalPlaybackMessage( KeyValues *pKeyValues );
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virtual const Vector &GetFogOrigin( void ) const { return m_ptOrigin; };
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virtual SkyboxVisibility_t SkyBoxVisibleFromPortal( void ) { return m_InternallyMaintainedData.m_nSkyboxVisibleFromCorners; };
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virtual bool DoesExitViewIntersectWaterPlane( float waterZ, int leafWaterDataID ) const;
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bool WillUseDepthDoublerThisDraw( void ) const; //returns true if the DrawPortal() would draw a depth doubler mesh if you were to call it right now
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virtual CPortalRenderable *GetLinkedPortal() const { return m_pLinkedPortal; };
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bool CalcFrustumThroughPortal( const Vector &ptCurrentViewOrigin, Frustum OutputFrustum );
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protected:
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void ClipFixToBoundingAreaAndDraw( PortalMeshPoint_t *pVerts, const IMaterial *pMaterial );
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void Internal_DrawRenderFixMesh( const IMaterial *pMaterial );
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// renders a quad that simulates fog as an overlay for something else (most notably the hole we create for stencil mode portals)
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void RenderFogQuad( void );
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void PortalMoved( void ); // call this if you've moved the portal around so we can update internally maintained data
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static const FlatBasicPortalRenderingMaterials_t& m_Materials;
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struct FlatBasicPortal_InternalData_t
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{
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VPlane m_BoundingPlanes[PORTALRENDERFIXMESH_OUTERBOUNDPLANES + 2]; // +2 for front and back
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VisOverrideData_t m_VisData; // a data to use for visibility calculations (to override area portal culling)
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int m_iViewLeaf; // leaf to start in for area portal flowing through calculations
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VMatrix m_DepthDoublerTextureView; //cached version of view matrix at depth 1 for use when drawing the depth doubler mesh
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bool m_bUsableDepthDoublerConfiguration; //every time a portal moves we re-evaluate whether the depth doubler will reasonably approximate more views
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SkyboxVisibility_t m_nSkyboxVisibleFromCorners;
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Vector m_ptForwardOrigin;
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Vector m_ptCorners[4];
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float m_fPlaneDist; //combines with m_vForward to make a plane
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};
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FlatBasicPortal_InternalData_t m_InternallyMaintainedData;
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public:
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CPortalRenderable_FlatBasic *m_pLinkedPortal;
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Vector m_ptOrigin;
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Vector m_vForward, m_vUp, m_vRight;
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float m_fStaticAmount;
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float m_fSecondaryStaticAmount; // used to help kludge the end of our recursive rendering chain
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float m_fOpenAmount;
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bool m_bIsPortal2; //for any set of portals, one must be portal 1, and the other portal 2. Uses different render targets
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};
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#endif //#ifndef PORTALRENDERABLE_FLATBASIC_H
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