mirror of
https://github.com/ptitSeb/Serious-Engine
synced 2024-11-23 10:50:26 +01:00
108 lines
4.5 KiB
C++
108 lines
4.5 KiB
C++
/* Copyright (c) 2002-2012 Croteam Ltd. All rights reserved. */
|
|
|
|
#ifndef SE_INCL_SHADOWMAP_H
|
|
#define SE_INCL_SHADOWMAP_H
|
|
#ifdef PRAGMA_ONCE
|
|
#pragma once
|
|
#endif
|
|
|
|
#include <Engine/Graphics/GfxLibrary.h>
|
|
|
|
#define SMF_DYNAMICINVALID (1UL<<0) // dynamic shadows are not up to date
|
|
#define SMF_DYNAMICBLACK (1UL<<1) // there was no need to mix dynamic shadow layer(s) (they were all black)
|
|
#define SMF_DYNAMICUPLOADED (1UL<<2) // dynamic shadowmap was uploaded last
|
|
#define SMF_ANIMATINGLIGHTS (1UL<<3) // set when shadowmap has at least one animating light
|
|
#define SMF_WANTSPROBE (1UL<<20) // set if wants to be probed
|
|
#define SMF_PROBED (1UL<<21) // set if last binding was as probe-texture
|
|
|
|
|
|
// class that holds information about shadow cluster map of each scene polygon
|
|
// format flags (16+) are defined by texture data
|
|
class ENGINE_API CShadowMap {
|
|
// implementation:
|
|
public:
|
|
CListNode sm_lnInGfx; // for linking in list of all cached shadow maps
|
|
ULONG sm_ulFlags; // various flags
|
|
INDEX sm_iFirstMipLevel; // best mip level possible for this shadow map
|
|
INDEX sm_iLastMipLevel; // minimum possible mip level
|
|
COLOR sm_colFlat; // color of whole shadowmap if shadowmap is flat
|
|
MEX sm_mexOffsetX, sm_mexOffsetY; // X and Y offset from the begining of the polygon
|
|
MEX sm_mexWidth, sm_mexHeight; // width and height of shadow map
|
|
|
|
ULONG *sm_pulCachedShadowMap; // pointer to cached calculated shadow map
|
|
ULONG *sm_pulDynamicShadowMap; // pointer to shadow map with dynamic lights
|
|
SLONG sm_slMemoryUsed; // memory in use by shadow map (in bytes)
|
|
INDEX sm_iFirstCachedMipLevel; // first mip level currently cached
|
|
INDEX sm_iFirstUploadMipLevel; // first mip level that is to be uploaded (if >30, upload nothing)
|
|
CTimerValue sm_tvLastDrawn; // timer for shadow uncaching and probing
|
|
|
|
PIX sm_pixPolygonSizeU, sm_pixPolygonSizeV; // dimensions of used part of shadowmap
|
|
PIX sm_pixUploadWidth, sm_pixUploadHeight; // dimensions of last upload size
|
|
ULONG sm_ulInternalFormat; // last format in which shadowmap was uploaded
|
|
ULONG sm_ulObject; // for API
|
|
ULONG sm_ulProbeObject; // for API
|
|
CTexParams sm_tpLocal; // local texture parameters
|
|
|
|
INDEX sm_iRenderFrame; // frame number currently rendering (for profiling)
|
|
|
|
// skip old shadows saved in stream
|
|
void Read_old_t(CTStream *inFile); // throw char *
|
|
// mix all layers into cached shadow map
|
|
virtual void MixLayers( INDEX iFirstMip, INDEX iLastMip, BOOL bDynamic=FALSE); // iFirstMip<iLastMip
|
|
// check if all layers are up to date
|
|
virtual void CheckLayersUpToDate(void);
|
|
// test if there is any dynamic layer
|
|
virtual BOOL HasDynamicLayers(void);
|
|
// this one always fail - CBrushShadowmap is the one that matters
|
|
inline virtual BOOL IsShadowFlat( COLOR &colFlat) { return FALSE; };
|
|
// mark that shadow has been drawn
|
|
void MarkDrawn(void);
|
|
|
|
// interface:
|
|
public:
|
|
// constructor
|
|
CShadowMap();
|
|
// destructor
|
|
~CShadowMap();
|
|
|
|
// clear the object
|
|
void Clear();
|
|
// initialize the shadow map
|
|
void Initialize( INDEX iMipLevel, MEX mexOffsetX, MEX mexOffsetY, MEX mexWidth, MEX mexHeight);
|
|
|
|
// read/write from a stream
|
|
void Read_t( CTStream *pstrm); // throw char *
|
|
void Write_t( CTStream *pstrm); // throw char *
|
|
virtual void ReadLayers_t( CTStream *pstrm); // throw char *
|
|
virtual void WriteLayers_t( CTStream *pstrm); // throw char *
|
|
|
|
// get shadowmap memory usage (in bytes)
|
|
ULONG GetShadowSize(void);
|
|
// returns used memory - static, dynamic and uploaded size separately, slack space ratio (0-1 float) and flatness
|
|
BOOL GetUsedMemory( SLONG &slStaticSize, SLONG &slDynamicSize, SLONG &slUploadSize, FLOAT &fSlackRatio);
|
|
|
|
// cache the shadow map
|
|
void Cache( INDEX iWantedMipLevel);
|
|
// update dynamic layers of the shadow map (returns mip in which shadow needs to be uploaded)
|
|
ULONG UpdateDynamicLayers(void);
|
|
// invalidate the shadow map
|
|
void Invalidate( BOOL bDynamicOnly=FALSE);
|
|
// uncache the shadow map (returns total ammount of memory that has been freed)
|
|
SLONG Uncache(void);
|
|
|
|
// prepare shadow map for upload and bind
|
|
void Prepare(void);
|
|
// set shadow as current for accelerator
|
|
void SetAsCurrent(void);
|
|
|
|
// returns whether the shadowmap is flat or not
|
|
inline BOOL IsFlat(void) {
|
|
return( (sm_pulCachedShadowMap==&sm_colFlat)
|
|
&& (sm_pulDynamicShadowMap==NULL || (sm_ulFlags&SMF_DYNAMICBLACK)));
|
|
};
|
|
};
|
|
|
|
|
|
#endif /* include-once check. */
|
|
|