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Damage tracking for transformed outputs

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emersion 2018-01-26 22:11:09 +01:00
parent a98ece68d3
commit ece2c1e4e2
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GPG key ID: 0FDE7BE0E88F5E48
12 changed files with 185 additions and 154 deletions
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2
util/meson.build
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@ -6,5 +6,5 @@ lib_wlr_util = static_library(
'region.c',
),
include_directories: wlr_inc,
dependencies: [pixman],
dependencies: [wayland_server, pixman],
)

74
util/region.c
View file

@ -26,4 +26,78 @@ void wlr_region_scale(pixman_region32_t *dst, pixman_region32_t *src,
pixman_region32_fini(dst);
pixman_region32_init_rects(dst, dst_rects, nrects);
free(dst_rects);
}
void wlr_region_transform(pixman_region32_t *dst, pixman_region32_t *src,
enum wl_output_transform transform, int width, int height) {
if (transform == WL_OUTPUT_TRANSFORM_NORMAL) {
pixman_region32_copy(dst, src);
return;
}
int nrects;
pixman_box32_t *src_rects = pixman_region32_rectangles(src, &nrects);
pixman_box32_t *dst_rects = malloc(nrects * sizeof(pixman_box32_t));
if (dst_rects == NULL) {
return;
}
for (int i = 0; i < nrects; ++i) {
switch (transform) {
case WL_OUTPUT_TRANSFORM_NORMAL:
dst_rects[i].x1 = src_rects[i].x1;
dst_rects[i].y1 = src_rects[i].y1;
dst_rects[i].x2 = src_rects[i].x2;
dst_rects[i].y2 = src_rects[i].y2;
break;
case WL_OUTPUT_TRANSFORM_90:
dst_rects[i].x1 = src_rects[i].y1;
dst_rects[i].y1 = width - src_rects[i].x2;
dst_rects[i].x2 = src_rects[i].y2;
dst_rects[i].y2 = width - src_rects[i].x1;
break;
case WL_OUTPUT_TRANSFORM_180:
dst_rects[i].x1 = width - src_rects[i].x2;
dst_rects[i].y1 = height - src_rects[i].y2;
dst_rects[i].x2 = width - src_rects[i].x1;
dst_rects[i].y2 = height - src_rects[i].y1;
break;
case WL_OUTPUT_TRANSFORM_270:
dst_rects[i].x1 = height - src_rects[i].y2;
dst_rects[i].y1 = src_rects[i].x1;
dst_rects[i].x2 = height - src_rects[i].y1;
dst_rects[i].y2 = src_rects[i].x2;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED:
dst_rects[i].x1 = width - src_rects[i].x2;
dst_rects[i].y1 = src_rects[i].y1;
dst_rects[i].x2 = width - src_rects[i].x1;
dst_rects[i].y2 = src_rects[i].y2;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
dst_rects[i].x1 = height - src_rects[i].y2;
dst_rects[i].y1 = width - src_rects[i].x2;
dst_rects[i].x2 = height - src_rects[i].y1;
dst_rects[i].y2 = width - src_rects[i].x1;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
dst_rects[i].x1 = src_rects[i].x1;
dst_rects[i].y1 = height - src_rects[i].y2;
dst_rects[i].x2 = src_rects[i].x2;
dst_rects[i].y2 = height - src_rects[i].y1;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
dst_rects[i].x1 = src_rects[i].y1;
dst_rects[i].y1 = src_rects[i].x1;
dst_rects[i].x2 = src_rects[i].y2;
dst_rects[i].y2 = src_rects[i].x2;
break;
}
}
pixman_region32_fini(dst);
pixman_region32_init_rects(dst, dst_rects, nrects);
free(dst_rects);
}