1

game/client/c_pixel_visibility.h

@@ -0,0 +1,55 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================//
+
+#ifndef C_PIXEL_VISIBILITY_H
+#define C_PIXEL_VISIBILITY_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+
+const float PIXELVIS_DEFAULT_PROXY_SIZE = 2.0f;
+const float PIXELVIS_DEFAULT_FADE_TIME = 0.0625f;
+
+typedef int pixelvis_handle_t;
+struct pixelvis_queryparams_t
+{
+	pixelvis_queryparams_t()
+	{
+		bSetup = false;
+	}
+
+	void Init( const Vector &origin, float proxySizeIn = PIXELVIS_DEFAULT_PROXY_SIZE, float proxyAspectIn = 1.0f, float fadeTimeIn = PIXELVIS_DEFAULT_FADE_TIME )
+	{
+		position = origin;
+		proxySize = proxySizeIn;
+		proxyAspect = proxyAspectIn;
+		fadeTime = fadeTimeIn;
+		bSetup = true;
+		bSizeInScreenspace = false;
+	}
+
+	Vector		position;
+	float		proxySize;
+	float		proxyAspect;
+	float		fadeTime;
+	bool		bSetup;
+	bool		bSizeInScreenspace;
+};
+
+float PixelVisibility_FractionVisible( const pixelvis_queryparams_t &params, pixelvis_handle_t *queryHandle );
+float StandardGlowBlend( const pixelvis_queryparams_t &params, pixelvis_handle_t *queryHandle, int rendermode, int renderfx, int alpha, float *pscale );
+
+void PixelVisibility_ShiftVisibilityViews( int iSourceViewID, int iDestViewID ); //mainly needed by portal mod to avoid a pop in visibility when teleporting the player
+
+void PixelVisibility_EndCurrentView();
+void PixelVisibility_EndScene();
+float GlowSightDistance( const Vector &glowOrigin, bool bShouldTrace );
+
+// returns true if the video hardware is doing the tests, false is traceline is doing so.
+bool PixelVisibility_IsAvailable();
+
+#endif // C_PIXEL_VISIBILITY_H