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Merge branch 'x11-shm-readback-fallback' into 'master'

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backend/x11: add SHM readback fallback when buffer import fails

See merge request wlroots/wlroots!5291
This commit is contained in:
Jonathan Marler 2026-04-07 21:21:50 +00:00
commit f4bee20858
3 changed files with 176 additions and 5 deletions
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11
include/backend/x11.h
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@ -8,6 +8,7 @@
#include <wayland-server-core.h>
#include <xcb/xcb.h>
#include <xcb/present.h>
#include <xcb/shm.h>
#include <pixman.h>
#include <wlr/backend/x11.h>
@ -48,6 +49,15 @@ struct wlr_x11_output {
uint64_t last_msc;
struct {
xcb_shm_seg_t seg;
uint8_t *data;
size_t size;
int width, height;
xcb_pixmap_t pixmap;
xcb_gcontext_t gc;
} readback;
struct {
struct wlr_swapchain *swapchain;
xcb_render_picture_t pic;
@ -74,6 +84,7 @@ struct wlr_x11_backend {
xcb_render_pictformat_t argb32;
bool have_shm;
bool have_shm_pixmaps;
bool have_dri3;
uint32_t dri3_major_version, dri3_minor_version;