1.1 --- a/src/mglimpl.h	Mon Nov 21 12:45:18 2011 +0200
     1.2 +++ b/src/mglimpl.h	Sat Nov 26 03:59:48 2011 +0200
     1.3 @@ -21,6 +21,13 @@
     1.4  #define MATRIX_STACK_SIZE	8
     1.5  #define MAX_LIGHTS			4
     1.6  
     1.7 +#define ZTILE_SIZE			16384
     1.8 +#define ZTILE_SHIFT			14
     1.9 +#define ZTILE_MASK			0x3fff
    1.10 +
    1.11 +#define ZTILE(x)			(((x) & ~ZTILE_MASK) >> ZTILE_SHIFT)
    1.12 +#define ZTILE_OFFS(x)		((x) & ZTILE_MASK)
    1.13 +
    1.14  #define ROUND(x)	((x) >= 0.0 ? (x) + 0.5 : (x) - 0.5)
    1.15  
    1.16  typedef struct {
    1.17 @@ -71,7 +78,8 @@
    1.18  struct framebuffer {
    1.19  	int width, height;
    1.20  	unsigned char *pixels;
    1.21 -	unsigned short **zbuf;	/* zbuffer broken in 64k tiles */
    1.22 +	unsigned short **zbuf;	/* zbuffer broken in ZTILE_SIZE tiles */
    1.23 +	int num_ztiles;
    1.24  };
    1.25  
    1.26