Make a guess:

}

/*
==============
ClearSkyBox
==============
*/
static void ClearSkyBox( void ) {
	int i;

	for ( i = 0 ; i < 6 ; i++ ) {
		s_skyBox[i].mins[0] = -1;
		s_skyBox[i].mins[1] = -1;
		s_skyBox[i].mins[2] = -1;
		s_skyBox[i].maxs[0] = 1;
		s_skyBox[i].maxs[1] = 1;
		s_skyBox[i].maxs[2] = 1;
	}
}

/*
================
R_DrawSkyBox
================
*/
static void R_DrawSkyBox( void ) {
	int		i;
	qboolean skyboxOn = r_fullbright->value && skyboxOn_detail >= 0;
	qboolean skyboxOn2 = skyboxOn && r_fullbright->value2 >= 0;

	if ( !skyboxOn ) {
		return;
	}

	if ( skyboxOn ) {
		s_skyBoxSkyOffOrigin = trap_R_RegisterShaderNoMip( skyboxFragShader );
		s_skyBoxSkyOffOrigin2 = trap_R_RegisterShaderNoMip( skyboxFragShader );

		if ( skybox_sky_alpha > 0 ) {
			s_skyBoxSkyBlue = trap_R_RegisterShaderNoMip( skyboxFragShader );
		} else {
			s_skyBoxSkyBlue = 0;
		}
	} else {
		s_skyBoxSkyOffOrigin = 0;
		s_skyBoxSkyOffOrigin2 = 0;
		s_skyBoxSkyBlue = 0;
	}

	// expand by cvar
	if ( skybox_bright <= 0 ) {
		s_skyBoxSkyBlue = 1 - s_skyBoxSkyBlue;
	}
	s_skyBoxSkyBlue2 = s_skyBoxSkyBlue * s_skyBoxSkyBlue;
	s_skyBoxSkyAlpha = s_skyBoxSkyBlue2 + r_sky_alphamode->value;

	if ( s_skyBoxSkyAlpha > 255 ) {
		s_skyBoxSkyAlpha = 255;
	}

	R_BindAnimatedTextures( skybox_textures[ skybox_bright > 0 ] );

	ClearSkyBox();

	for ( i = 0 ; i < 6 ; i++ ) {
		if ( skybox_world[i].masked ) {
			R_BindAnimatedTexture( skybox_textures[ skybox_world[i].texnum ] );
		}
	}

	if ( skybox_ambient ) {
		R_BindAnimatedTexture( skybox_textures[ skybox_ambient->texnum ] );
	}

	R_BindAnimatedTexture( skybox_detail );

	for ( i = 0 ; i < 6 ; i++ ) {
		if ( skybox_world[i].masked ) {
			R_BindAnimatedTexture( skybox_detail_world[i].texture );
		}
	}

	R_BindAnimatedTexture( skybox_detail2 );

	if ( skybox_music ) {
		R_BindAnimatedTexture( skybox_music );
	}

	R_BindAnimatedTexture( skybox_fart );

	if ( skybox_fart2 ) {
		R_BindAnimatedTexture( skybox_fart2 );
	}

	R_BindAnimatedTexture( skybox_sub22 );
	R_BindAnimatedTexture( skybox_sub44 );
	R_BindAnimatedTexture( skybox_sub22_2 );
	R_BindAnimatedTexture( skybox_sub44_2 );
	R_BindAnimatedTexture( skybox_sub44_1 );

	R_BindAnimatedTexture( skybox_trap_solid );
	R_BindAnimatedTexture( skybox_trap_user );

	if ( skybox_hand ) {
		R_BindAnimatedTexture( skybox_hand );
	}

	if ( skybox_normal ) {
		R_BindAnimatedTexture( skybox_normal );
	}

	R_BindAnimatedTexture( skybox_glow );

	if ( skybox