engine: common: remove unused IsBackgroundMap/Demo calls, remove unused gamma function

engine/client/cl_main.c

@@ -150,16 +150,6 @@ qboolean CL_DisableVisibility( void )
 	return cls.envshot_disable_vis;
 }
 
-qboolean CL_IsBackgroundDemo( void )
-{
-	return ( cls.demoplayback && cls.demonum != -1 );
-}
-
-qboolean CL_IsBackgroundMap( void )
-{
-	return ( cl.background && !cls.demoplayback );
-}
-
 char *CL_Userinfo( void )
 {
 	return cls.userinfo;

engine/common/common.h

@@ -780,8 +780,6 @@ int SV_GetMaxClients( void );
 qboolean CL_IsRecordDemo( void );
 qboolean CL_IsTimeDemo( void );
 qboolean CL_IsPlaybackDemo( void );
-qboolean CL_IsBackgroundDemo( void );
-qboolean CL_IsBackgroundMap( void );
 qboolean SV_Initialized( void );
 qboolean CL_LoadProgs( const char *name );
 void CL_ProcessFile( qboolean successfully_received, const char *filename );
@@ -860,7 +858,6 @@ void S_StopAllSounds( qboolean ambient );
 // gamma routines
 void BuildGammaTable( float gamma, float brightness );
 byte LightToTexGamma( byte b );
-byte TextureToGamma( byte b );
 
 //
 // identification.c

engine/common/dedicated.c

@@ -70,16 +70,6 @@ qboolean CL_DisableVisibility( void )
 	return false;
 }
 
-qboolean CL_IsBackgroundDemo( void )
-{
-	return false;
-}
-
-qboolean CL_IsBackgroundMap( void )
-{
-	return false;
-}
-
 void CL_Init( void )
 {
 

engine/common/gamma.c

@@ -20,7 +20,6 @@ GNU General Public License for more details.
 //-----------------------------------------------------------------------------
 // Gamma conversion support
 //-----------------------------------------------------------------------------
-static byte	texgammatable[256];		// palette is sent through this to convert to screen gamma
 static byte	lightgammatable[256];
 static int	lineargammatable[1024];
 static int	screengammatable[1024];
@@ -60,13 +59,6 @@ void BuildGammaTable( float lightgamma, float brightness )
 		lightgammatable[i] = bound( 0, inf, 255 );
 	}
 
-	for( i = 0; i < 256; i++ )
-	{
-		f = 255.0f * pow(( float )i / 255.0f, TEXGAMMA );
-		inf = (int)(f + 0.5f);
-		texgammatable[i] = bound( 0, inf, 255 );
-	}
-
 	for( i = 0; i < 1024; i++ )
 	{
 		// convert from screen gamma space to linear space
@@ -84,11 +76,3 @@ byte LightToTexGamma( byte b )
 	else
 		return lightgammatable[b];
 }
-
-byte TextureToGamma( byte b )
-{
-	if( FBitSet( host.features, ENGINE_LINEAR_GAMMA_SPACE ))
-		return b;
-	else
-		return texgammatable[b];
-}