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1 files changed, 129 insertions, 0 deletions

diff --git a/game/client/glow_overlay.h b/game/client/glow_overlay.h
new file mode 100644
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+++ b/game/client/glow_overlay.h
@@ -0,0 +1,129 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#ifndef GLOW_OVERLAY_H
+#define GLOW_OVERLAY_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+#include "mathlib/vector.h"
+#include "materialsystem/imaterial.h"
+#include "sun_shared.h"
+#include "c_pixel_visibility.h"
+
+#ifdef PORTAL
+#include "c_prop_portal.h" //MAX_PORTAL_RECURSIVE_VIEWS
+#endif
+
+extern float g_flOverlayRange;
+
+class CGlowSprite
+{
+public:
+	Vector				m_vColor;		// 0-1
+	float				m_flHorzSize;	// Horizontal and vertical sizes.
+	float				m_flVertSize;	// 1 = size of the sun
+	IMaterial			*m_pMaterial;	// Material to use
+};
+
+
+class CGlowOverlay
+{
+public:
+
+					CGlowOverlay();
+	virtual			~CGlowOverlay();
+
+	// Return false to remove (and delete) the overlay.
+	virtual bool	Update();
+
+
+// Data the creator should fill in.
+public:
+
+	// Position of the light source. If m_bDirectional is set, then it ignores
+	// this and uses m_vDirection as the direction of the light source.
+	Vector		m_vPos;
+
+	// Optional direction. Used for really far away things like the sun.
+	// The direction should point AT the light source.
+	bool		m_bDirectional;
+	Vector		m_vDirection;
+
+	// If this is set, then the overlay is only visible if the ray to it hits the sky.
+	bool		m_bInSky;
+	float		m_skyObstructionScale;
+#ifdef PORTAL
+	float		m_skyObstructionScaleBackups[MAX_PORTAL_RECURSIVE_VIEWS]; //used in portal mod during stencil rendering to maintain obstructions while rendering recursive views
+#endif
+
+	CGlowSprite	m_Sprites[MAX_SUN_LAYERS];
+	int			m_nSprites;
+
+	float		m_flProxyRadius;
+
+	float		m_flHDRColorScale;
+
+public:
+
+	// After creating the overlay, call this to add it to the active list.
+	// You can also call Activate and Deactivate as many times as you want.
+	void			Activate();
+	void			Deactivate();
+	
+	// Render all the active overlays.
+	static void		DrawOverlays( bool bCacheFullSceneState );
+	static void		UpdateSkyOverlays( float zFar, bool bCacheFullSceneState );
+
+#ifdef PORTAL
+	static void		BackupSkyOverlayData( int iBackupToSlot );
+	static void		RestoreSkyOverlayData( int iRestoreFromSlot );
+#endif
+
+protected:
+
+	void			UpdateGlowObstruction( const Vector &vToGlow, bool bCacheFullSceneState );
+	void			UpdateSkyGlowObstruction( float zFar, bool bCacheFullSceneState );
+
+	virtual void	CalcSpriteColorAndSize( 
+		float flDot,
+		CGlowSprite *pSprite, 
+		float *flHorzSize, 
+		float *flVertSize, 
+		Vector *vColor );
+
+	virtual void	CalcBasis( 
+		const Vector &vToGlow,
+		float flHorzSize,
+		float flVertSize,
+		Vector &vBasePt,
+		Vector &vUp,
+		Vector &vRight );
+
+	virtual void	Draw( bool bCacheFullSceneState );
+	float			CalcGlowAspect();
+	
+	float			m_flGlowObstructionScale;	
+	bool			m_bCacheGlowObstruction;			// Flags to cache obstruction scales
+	bool			m_bCacheSkyObstruction;				// Used in IFM poster rendering
+
+private:
+	short			m_bActivated;
+	unsigned short	m_ListIndex; // index into s_GlowOverlays.
+	pixelvis_handle_t m_queryHandle;
+};
+
+//Override for warping
+class CWarpOverlay : public CGlowOverlay
+{
+protected:
+	
+	virtual void Draw( bool bCacheFullSceneState );
+};
+
+#endif // GLOW_OVERLAY_H