OpenGL2: Add r_cubemapSize.

code/renderergl2/tr_local.h

@@ -54,8 +54,6 @@ typedef unsigned int glIndex_t;
 #define MAX_CALC_PSHADOWS    64
 #define MAX_DRAWN_PSHADOWS    16 // do not increase past 32, because bit flags are used on surfaces
 #define PSHADOW_MAP_SIZE      512
-#define CUBE_MAP_MIPS      7
-#define CUBE_MAP_SIZE      (1 << CUBE_MAP_MIPS)
 
 #define USE_VERT_TANGENT_SPACE
 #define USE_OVERBRIGHT
@@ -1792,6 +1790,7 @@ extern  cvar_t  *r_specularMapping;
 extern  cvar_t  *r_deluxeMapping;
 extern  cvar_t  *r_parallaxMapping;
 extern  cvar_t  *r_cubeMapping;
+extern  cvar_t  *r_cubemapSize;
 extern  cvar_t  *r_specularIsMetallic;
 extern  cvar_t  *r_glossIsRoughness;
 extern  cvar_t  *r_baseNormalX;