shithub: qk1

ref: 817743a2d1468248a025c4abb9fd5ff43d01e277
dir: /span.c/

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#include "quakedef.h"

#define P \
	do{ \
		*pdest++ = pbase[(s >> 16) + (t >> 16) * cachewidth]; \
		s += sstep; \
		t += tstep; \
	}while(0);

void
dospan(uchar *pdest, uchar *pbase, int s, int t, int sstep, int tstep, int spancount, int cachewidth)
{
	switch(spancount)
	{
	case 16: P; case 15: P; case 14: P; case 13: P; case 12: P; case 11: P; case 10: P; case 9: P;
	case  8: P; case  7: P; case  6: P; case  5: P; case  4: P; case  3: P; case  2: P; case 1: P;
	}
	USED(pdest); USED(s); USED(t);
}