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fix(wayland/shm): correctly premultiply flush area (#9973)

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This commit is contained in:
André Costa
2026-04-24 09:57:31 +02:00
committed by GitHub
parent 14a1e1fd47
commit 2f4e03ffbd
1 changed files with 5 additions and 2 deletions
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src/drivers/wayland/lv_wayland_backend_shm.c
+5 -2
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@@ -404,10 +404,13 @@ static void shm_flush_cb(lv_display_t * disp, const lv_area_t * area, uint8_t *
if(ddata->shm_cf == WL_SHM_FORMAT_ARGB8888 && cf != LV_COLOR_FORMAT_ARGB8888_PREMULTIPLIED) {
const int32_t w = lv_area_get_width(area);
const int32_t h = lv_area_get_height(area);
size_t index = 0;
const int32_t buf_w = lv_display_get_horizontal_resolution(disp);
lv_color32_t * start_pos = (lv_color32_t *)px_map + (area->y1 * buf_w) + area->x1;
for(int32_t y = 0; y < h; ++y) {
size_t index = y * buf_w;
for(int32_t x = 0; x < w; ++x) {
lv_color_premultiply((lv_color32_t *) px_map + (index++));
lv_color_premultiply(start_pos + (index++));
}
}
}