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Use DBL_EPSILON for colormap comparison

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mazmazz 2018-12-24 20:22:10 -05:00
parent 58728ec358
commit e9e5128754
2 changed files with 7 additions and 1 deletions
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4
src/doomdef.h
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@ -410,6 +410,10 @@ INT32 I_GetKey(void);
#define max(x, y) (((x) > (y)) ? (x) : (y))
#endif
// Floating point comparison epsilons from float.h
#define FLT_EPSILON 1.1920928955078125e-7f
#define DBL_EPSILON 2.2204460492503131e-16
// An assert-type mechanism.
#ifdef PARANOIA
#define I_Assert(e) ((e) ? (void)0 : I_Error("assert failed: %s, file %s, line %d", #e, __FILE__, __LINE__))

4
src/r_data.c
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@ -1220,7 +1220,7 @@ INT32 R_CreateColormap(char *p1, char *p2, char *p3)
continue;
if (maskcolor == extra_colormaps[i].maskcolor
&& fadecolor == extra_colormaps[i].fadecolor
&& fabs(maskamt - extra_colormaps[i].maskamt) < 1.0E-36
&& fabs(maskamt - extra_colormaps[i].maskamt) < DBL_EPSILON
&& fadestart == extra_colormaps[i].fadestart
&& fadeend == extra_colormaps[i].fadeend
&& fog == extra_colormaps[i].fog)
@ -1229,6 +1229,8 @@ INT32 R_CreateColormap(char *p1, char *p2, char *p3)
}
}
CONS_Printf("Making a new colormap\n");
if (num_extra_colormaps == MAXCOLORMAPS)
I_Error("R_CreateColormap: Too many colormaps! the limit is %d\n", MAXCOLORMAPS);