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Replace repeat_remainder() with simpler macro that just casts args to unsigned.

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This commit is contained in:
Brian 2007-10-17 14:29:12 -06:00
parent df4410a597
commit 906768316d
1 changed files with 6 additions and 13 deletions
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19
src/mesa/pipe/softpipe/sp_tex_sample.c
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@ -77,17 +77,10 @@ lerp_2d(float a, float b,
/**
* Compute the remainder of a divided by b, but be careful with
* negative values so that REPEAT mode works right.
* If A is a signed integer, A % B doesn't give the right value for A < 0
* (in terms of texture repeat). Just casting to unsigned fixes that.
*/
static INLINE int
repeat_remainder(int a, int b)
{
if (a >= 0)
return a % b;
else
return (a + 1) % b + b - 1;
}
#define REMAINDER(A, B) ((unsigned) (A) % (unsigned) (B))
/**
@ -106,7 +99,7 @@ nearest_texcoord(unsigned wrapMode, float s, unsigned size)
/* s limited to [0,1) */
/* i limited to [0,size-1] */
i = ifloor(s * size);
i = repeat_remainder(i, size);
i = REMAINDER(i, size);
return i;
case PIPE_TEX_WRAP_CLAMP:
/* s limited to [0,1] */
@ -231,8 +224,8 @@ linear_texcoord(unsigned wrapMode, float s, unsigned size,
switch (wrapMode) {
case PIPE_TEX_WRAP_REPEAT:
u = s * size - 0.5F;
*i0 = repeat_remainder(ifloor(u), size);
*i1 = repeat_remainder(*i0 + 1, size);
*i0 = REMAINDER(ifloor(u), size);
*i1 = REMAINDER(*i0 + 1, size);
break;
case PIPE_TEX_WRAP_CLAMP:
if (s <= 0.0F)