On Sat, 2014-10-18 at 13:55 +0200, David Heidelberger wrote:
> From: Christoph Bumiller <christoph.bumil...@speed.at>
>
> Signed-off-by: David Heidelberger <david.heidelber...@ixit.cz>
> ---
> src/gallium/auxiliary/util/u_box.h | 201
> ++++++++++++++++++++++++++++++++++++
> src/gallium/auxiliary/util/u_rect.h | 28 +++++
> 2 files changed, 229 insertions(+)
>
> diff --git a/src/gallium/auxiliary/util/u_box.h
> b/src/gallium/auxiliary/util/u_box.h
> index 0b28d0f..b05d361 100644
> --- a/src/gallium/auxiliary/util/u_box.h
> +++ b/src/gallium/auxiliary/util/u_box.h
> @@ -2,6 +2,7 @@
> #define UTIL_BOX_INLINES_H
>
> #include "pipe/p_state.h"
> +#include "util/u_math.h"
>
> static INLINE
> void u_box_1d( unsigned x,
> @@ -77,4 +78,204 @@ void u_box_3d( unsigned x,
> box->depth = d;
> }
>
> +/* Returns whether @a is contained in or equal to @b. */
> +static INLINE
> +boolean u_box_contained(struct pipe_box *a, struct pipe_box *b)
> +{
> + return
> + a->x >= b->x && (a->x + a->width <= b->x + b->width) &&
> + a->y >= b->y && (a->y + a->height <= b->y + b->height) &&
> + a->z >= b->z && (a->z + a->depth <= b->z + b->depth);
> +}
> +
> +/* Clips @box to width @w and height @h.
> + * Returns -1 if the resulting box would be empty (then @box is left
> unchanged).
> + * Otherwise, returns 1/2/0/3 if width/height/neither/both have been reduced.
> + * Aliasing permitted.
> + */
> +static INLINE
> +int u_box_clip_2d(struct pipe_box *dst,
> + struct pipe_box *box, int w, int h)
> +{
> + int i, a[2], b[2], dim[2], 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) {
> + if (b[i] < a[i]) {
> + if (a[i] < 0 || b[i] >= dim[i])
> + return -1;
> + if (a[i] > dim[i]) { a[i] = dim[i]; res |= (1 << i); }
> + if (b[i] < 0) { b[i] = 0; res |= (1 << i); }
> + } else {
> + if (b[i] < 0 || a[i] >= dim[i])
> + return -1;
> + if (a[i] < 0) { a[i] = 0; res |= (1 << i); }
> + if (b[i] > dim[i]) { b[i] = 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
> +int u_box_clip_3d(struct pipe_box *dst,
> + struct pipe_box *box, int w, int h, int d)
> +{
> + int i, a[3], b[3], dim[3], res = 0;
> +
> + if (!box->width || !box->height)
> + return -1;
> + dim[0] = w;
> + dim[1] = h;
> + dim[2] = d;
> + a[0] = box->x;
> + a[1] = box->y;
> + a[2] = box->z;
> + b[0] = box->x + box->width;
> + b[1] = box->y + box->height;
> + b[2] = box->z + box->depth;
> +
> + for (i = 0; i < 2; ++i) {
^^^^^
Hi, quick question. Shouldn't this be a '3' ?
Thanks!
Bruno
> + if (b[i] < a[i]) {
> + if (a[i] < 0 || b[i] >= dim[i])
> + return -1;
> + if (a[i] > dim[i]) { a[i] = dim[i]; res |= (1 << i); }
> + if (b[i] < 0) { b[i] = 0; res |= (1 << i); }
> + } else {
> + if (b[i] < 0 || a[i] >= dim[i])
> + return -1;
> + if (a[i] < 0) { a[i] = 0; res |= (1 << i); }
> + if (b[i] > dim[i]) { b[i] = dim[i]; res |= (1 << i); }
> + }
> + }
> +
> + if (res) {
> + dst->x = a[0];
> + dst->y = a[1];
> + dst->z = a[2];
> + dst->width = b[0] - a[0];
> + dst->height = b[1] - a[1];
> + dst->depth = b[2] - a[2];
> + }
> + return res;
> +}
> +
> +/* Return true if @a is contained in or equal to @b.
> + */
> +static INLINE
> +boolean u_box_contained_2d(const struct pipe_box *a, const struct pipe_box
> *b)
> +{
> + int a_x1 = a->x + a->width;
> + int b_x1 = b->x + b->width;
> + int a_y1 = a->y + a->height;
> + int b_y1 = b->y + b->height;
> + return
> + a->x >= b->x && a_x1 <= b_x1 &&
> + a->y >= b->y && a_y1 <= b_y1;
> +}
> +
> +static INLINE
> +int64_t u_box_volume(const struct pipe_box *box)
> +{
> + return (int64_t)box->width * box->height * box->depth;
> +}
> +
> +/* Aliasing of @dst and @a permitted. */
> +static INLINE
> +void u_box_cover_2d(struct pipe_box *dst,
> + struct pipe_box *a, const struct pipe_box *b)
> +{
> + int x1_a = a->x + a->width;
> + int y1_a = a->y + a->height;
> + int x1_b = b->x + b->width;
> + int y1_b = b->y + b->height;
> +
> + dst->x = MIN2(a->x, b->x);
> + dst->y = MIN2(a->y, b->y);
> +
> + dst->width = MAX2(x1_a, x1_b) - dst->x;
> + dst->height = MAX2(y1_a, y1_b) - dst->y;
> +}
> +
> +/* Aliasing of @dst and @a permitted. */
> +static INLINE
> +void u_box_cover(struct pipe_box *dst,
> + struct pipe_box *a, const struct pipe_box *b)
> +{
> + int x1_a = a->x + a->width;
> + int y1_a = a->y + a->height;
> + int z1_a = a->z + a->depth;
> + int x1_b = b->x + b->width;
> + int y1_b = b->y + b->height;
> + int z1_b = b->z + b->depth;
> +
> + dst->x = MIN2(a->x, b->x);
> + dst->y = MIN2(a->y, b->y);
> + dst->z = MIN2(a->z, b->z);
> +
> + dst->width = MAX2(x1_a, x1_b) - dst->x;
> + dst->height = MAX2(y1_a, y1_b) - dst->y;
> + dst->depth = MAX2(z1_a, z1_b) - dst->z;
> +}
> +
> +static INLINE
> +boolean u_box_test_intersection_xy_only(const struct pipe_box *a,
> + const struct pipe_box *b)
> +{
> + int i;
> + unsigned 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(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);
> +}
> +
> +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);
> +}
> +
> #endif
> diff --git a/src/gallium/auxiliary/util/u_rect.h
> b/src/gallium/auxiliary/util/u_rect.h
> index dd87f81..c8eda4a 100644
> --- a/src/gallium/auxiliary/util/u_rect.h
> +++ b/src/gallium/auxiliary/util/u_rect.h
> @@ -30,6 +30,7 @@
> #define U_RECT_H
>
> #include "pipe/p_compiler.h"
> +#include "util/u_math.h"
>
> #ifdef __cplusplus
> extern "C" {
> @@ -67,6 +68,22 @@ u_rect_find_intersection(const struct u_rect *a,
> }
>
>
> +/* Return true if @a is contained in or equal to @b.
> + */
> +static INLINE boolean
> +u_rect_contained(const struct u_rect *a, const struct u_rect *b)
> +{
> + return
> + a->x0 >= b->x0 && a->x1 <= b->x1 &&
> + a->y0 >= b->y0 && a->y1 <= b->y1;
> +}
> +
> +static INLINE int
> +u_rect_area(const struct u_rect *r)
> +{
> + return (r->x1 - r->x0) * (r->y1 - r->y0);
> +}
> +
> static INLINE void
> u_rect_possible_intersection(const struct u_rect *a,
> struct u_rect *b)
> @@ -79,6 +96,17 @@ u_rect_possible_intersection(const struct u_rect *a,
> }
> }
>
> +/* Set @d to a rectangle that covers both @a and @b.
> + */
> +static INLINE void
> +u_rect_cover(struct u_rect *d, const struct u_rect *a, const struct u_rect
> *b)
> +{
> + d->x0 = MIN2(a->x0, b->x0);
> + d->y0 = MIN2(a->y0, b->y0);
> + d->x1 = MAX2(a->x1, b->x1);
> + d->y1 = MAX2(a->y1, b->y1);
> +}
> +
> #ifdef __cplusplus
> }
> #endif
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