#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 )
+static inline void
+u_box_1d(unsigned x, unsigned w, struct pipe_box *box)
{
box->x = x;
box->y = 0;
box->depth = 1;
}
-static INLINE
-void u_box_2d( unsigned x,
- unsigned y,
- unsigned w,
- unsigned h,
- struct pipe_box *box )
+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->depth = 1;
}
-static INLINE
-void u_box_origin_2d( unsigned w,
- unsigned h,
- struct pipe_box *box )
+static inline void
+u_box_origin_2d(unsigned w, unsigned h, struct pipe_box *box)
{
box->x = 0;
box->y = 0;
box->depth = 1;
}
-static INLINE
-void u_box_2d_zslice( unsigned x,
- unsigned y,
- unsigned z,
- unsigned w,
- unsigned h,
- struct pipe_box *box )
+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->depth = 1;
}
-static INLINE
-struct pipe_subresource u_subresource( unsigned face,
- unsigned level )
+static inline void
+u_box_3d(unsigned x, unsigned y, unsigned z,
+ unsigned w, unsigned h, unsigned d,
+ struct pipe_box *box)
{
- struct pipe_subresource subresource;
- subresource.face = face;
- subresource.level = level;
- return subresource;
+ 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