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97 lines
2.8 KiB
97 lines
2.8 KiB
5 years ago
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//========= 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 R_AREAPORTAL_H
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#define R_AREAPORTAL_H
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#ifdef _WIN32
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#pragma once
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#endif
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#include "utlvector.h"
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#include "gl_model_private.h"
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class Frustum_t;
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// Used to clip area portals. The coordinates here are in normalized
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// view space (-1,-1) - (1,1)
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// BUGBUG: NOTE!!!: These are left->right, and bottom->top, so a full rect is left=-1,top=1,right=1,bottom=-1
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class CPortalRect
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{
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public:
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float left, top, right, bottom;
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};
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// ---------------------------------------------------------------------------- //
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// Functions.
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// ---------------------------------------------------------------------------- //
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// Copies cl.pAreaBits, finds the area the viewer is in, and figures out what
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// other areas are visible. The new bits are placed in g_RenderAreaBits.
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void R_SetupAreaBits( int iForceViewLeaf = -1, const VisOverrideData_t* pVisData = NULL, float *pWaterReflectionHeight = NULL );
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// Ask if an area is visible to the renderer.
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unsigned char R_IsAreaVisible( int area );
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void R_Areaportal_LevelInit();
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void R_Areaportal_LevelShutdown();
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// Decides if the node can be seen through the area portals (ie: if you're
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// looking out a window with an areaportal in it, this will clip out the
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// stuff to the sides).
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enum
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{
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FRUSTUM_CLIP_RIGHT = (1 << FRUSTUM_RIGHT),
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FRUSTUM_CLIP_LEFT = (1 << FRUSTUM_LEFT),
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FRUSTUM_CLIP_TOP = (1 << FRUSTUM_TOP),
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FRUSTUM_CLIP_BOTTOM = (1 << FRUSTUM_BOTTOM),
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FRUSTUM_CLIP_MASK = FRUSTUM_CLIP_RIGHT | FRUSTUM_CLIP_LEFT | FRUSTUM_CLIP_TOP | FRUSTUM_CLIP_BOTTOM,
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// This mask is used to reset the clip flags when we first enter an area
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FRUSTUM_CLIP_IN_AREA = 0x80000000,
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// Set the clipmask to this to cause it to clip against all frustum planes
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FRUSTUM_CLIP_ALL = FRUSTUM_CLIP_MASK,
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// Set the clipmask to this to suppress all future clipping
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FRUSTUM_SUPPRESS_CLIPPING = FRUSTUM_CLIP_IN_AREA,
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};
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bool R_CullNode( Frustum_t *pAreaFrustum, mnode_t *pNode, int &nClipMask );
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const Frustum_t* GetAreaFrustum( int area );
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// ---------------------------------------------------------------------------- //
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// Globals.
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// ---------------------------------------------------------------------------- //
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extern ConVar r_DrawPortals;
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// Used when r_DrawPortals is on. Draws the screen space rects for each portal.
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extern CUtlVector<CPortalRect> g_PortalRects;
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// ---------------------------------------------------------------------------- //
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// Inlines.
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// ---------------------------------------------------------------------------- //
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inline unsigned char R_IsAreaVisible( int area )
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{
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extern unsigned char g_RenderAreaBits[32];
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return g_RenderAreaBits[area>>3] & (1 << (area&7));
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}
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#endif // R_AREAPORTAL_H
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