+extern cvar_t vid_gamma;
+extern cvar_t vid_brightness;
+extern cvar_t vid_contrast;
+
extern unsigned int d_8to24table[256];
//extern byte d_15to8table[32768];
-extern byte host_basepal[768];
-extern byte qgamma[256];
-extern float vid_gamma;
+extern byte texgamma[256];
+
+extern qboolean hardwaregammasupported;
+
+void VID_UpdateGamma(qboolean force);
+
+// used by hardware gamma functions in vid_* files
+void BuildGammaTable8(float prescale, float gamma, float scale, float base, byte *out);
+void BuildGammaTable16(float prescale, float gamma, float scale, float base, unsigned short *out);
+void Gamma_Init();
void Palette_Init();