#ifndef UTIL_BOX_INLINES_H
|
#define UTIL_BOX_INLINES_H
|
|
#include "pipe/p_state.h"
|
#include "util/u_math.h"
|
|
static inline void
|
u_box_1d(unsigned x, unsigned w, struct pipe_box *box)
|
{
|
box->x = x;
|
box->y = 0;
|
box->z = 0;
|
box->width = w;
|
box->height = 1;
|
box->depth = 1;
|
}
|
|
static inline void
|
u_box_2d(unsigned x,unsigned y, unsigned w, unsigned h, struct pipe_box *box)
|
{
|
box->x = x;
|
box->y = y;
|
box->z = 0;
|
box->width = w;
|
box->height = h;
|
box->depth = 1;
|
}
|
|
static inline void
|
u_box_origin_2d(unsigned w, unsigned h, struct pipe_box *box)
|
{
|
box->x = 0;
|
box->y = 0;
|
box->z = 0;
|
box->width = w;
|
box->height = h;
|
box->depth = 1;
|
}
|
|
static inline void
|
u_box_2d_zslice(unsigned x, unsigned y, unsigned z,
|
unsigned w, unsigned h, struct pipe_box *box)
|
{
|
box->x = x;
|
box->y = y;
|
box->z = z;
|
box->width = w;
|
box->height = h;
|
box->depth = 1;
|
}
|
|
static inline void
|
u_box_3d(unsigned x, unsigned y, unsigned z,
|
unsigned w, unsigned h, unsigned d,
|
struct pipe_box *box)
|
{
|
box->x = x;
|
box->y = y;
|
box->z = z;
|
box->width = w;
|
box->height = h;
|
box->depth = d;
|
}
|
|
/* Clips @dst to width @w and height @h.
|
* Returns -1 if the resulting box would be empty (then @dst is left unchanged).
|
* 0 if nothing has been reduced.
|
* 1 if width has been reduced.
|
* 2 if height has been reduced.
|
* 3 if both width and height have been reduced.
|
* Aliasing permitted.
|
*/
|
static inline int
|
u_box_clip_2d(struct pipe_box *dst,
|
const struct pipe_box *box, int w, int h)
|
{
|
unsigned i;
|
int a[2], b[2], dim[2];
|
int *start, *end;
|
int res = 0;
|
|
if (!box->width || !box->height)
|
return -1;
|
dim[0] = w;
|
dim[1] = h;
|
a[0] = box->x;
|
a[1] = box->y;
|
b[0] = box->x + box->width;
|
b[1] = box->y + box->height;
|
|
for (i = 0; i < 2; ++i) {
|
start = (a[i] <= b[i]) ? &a[i] : &b[i];
|
end = (a[i] <= b[i]) ? &b[i] : &a[i];
|
|
if (*end < 0 || *start >= dim[i])
|
return -1;
|
if (*start < 0) {
|
*start = 0;
|
res |= (1 << i);
|
}
|
if (*end > dim[i]) {
|
*end = dim[i];
|
res |= (1 << i);
|
}
|
}
|
|
if (res) {
|
dst->x = a[0];
|
dst->y = a[1];
|
dst->width = b[0] - a[0];
|
dst->height = b[1] - a[1];
|
}
|
return res;
|
}
|
|
static inline int64_t
|
u_box_volume_3d(const struct pipe_box *box)
|
{
|
return (int64_t)box->width * box->height * box->depth;
|
}
|
|
/* Aliasing of @dst permitted. */
|
static inline void
|
u_box_union_2d(struct pipe_box *dst,
|
const struct pipe_box *a, const struct pipe_box *b)
|
{
|
int x, y;
|
|
x = MIN2(a->x, b->x);
|
y = MIN2(a->y, b->y);
|
|
dst->width = MAX2(a->x + a->width, b->x + b->width) - x;
|
dst->height = MAX2(a->y + a->height, b->y + b->height) - y;
|
dst->x = x;
|
dst->y = y;
|
}
|
|
/* Aliasing of @dst permitted. */
|
static inline void
|
u_box_union_3d(struct pipe_box *dst,
|
const struct pipe_box *a, const struct pipe_box *b)
|
{
|
int x, y, z;
|
|
x = MIN2(a->x, b->x);
|
y = MIN2(a->y, b->y);
|
z = MIN2(a->z, b->z);
|
|
dst->width = MAX2(a->x + a->width, b->x + b->width) - x;
|
dst->height = MAX2(a->y + a->height, b->y + b->height) - y;
|
dst->depth = MAX2(a->z + a->depth, b->z + b->depth) - z;
|
dst->x = x;
|
dst->y = y;
|
dst->z = z;
|
}
|
|
static inline boolean
|
u_box_test_intersection_2d(const struct pipe_box *a,
|
const struct pipe_box *b)
|
{
|
unsigned i;
|
int a_l[2], a_r[2], b_l[2], b_r[2];
|
|
a_l[0] = MIN2(a->x, a->x + a->width);
|
a_r[0] = MAX2(a->x, a->x + a->width);
|
a_l[1] = MIN2(a->y, a->y + a->height);
|
a_r[1] = MAX2(a->y, a->y + a->height);
|
|
b_l[0] = MIN2(b->x, b->x + b->width);
|
b_r[0] = MAX2(b->x, b->x + b->width);
|
b_l[1] = MIN2(b->y, b->y + b->height);
|
b_r[1] = MAX2(b->y, b->y + b->height);
|
|
for (i = 0; i < 2; ++i) {
|
if (a_l[i] > b_r[i] || a_r[i] < b_l[i])
|
return FALSE;
|
}
|
return TRUE;
|
}
|
|
static inline void
|
u_box_minify_2d(struct pipe_box *dst,
|
const struct pipe_box *src, unsigned l)
|
{
|
dst->x = src->x >> l;
|
dst->y = src->y >> l;
|
dst->width = MAX2(src->width >> l, 1);
|
dst->height = MAX2(src->height >> l, 1);
|
}
|
|
static inline void
|
u_box_minify_3d(struct pipe_box *dst,
|
const struct pipe_box *src, unsigned l)
|
{
|
dst->x = src->x >> l;
|
dst->y = src->y >> l;
|
dst->z = src->z >> l;
|
dst->width = MAX2(src->width >> l, 1);
|
dst->height = MAX2(src->height >> l, 1);
|
dst->depth = MAX2(src->depth >> l, 1);
|
}
|
|
#endif
|
