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render: explicit sync for wlr_texture_read_pixels()

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This commit is contained in:
Félix Poisot 2026-03-26 12:25:07 +00:00
parent 413664e0b0
commit f295d0322a
6 changed files with 110 additions and 55 deletions
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23
render/gles2/texture.c
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@ -4,8 +4,10 @@
#include <GLES2/gl2ext.h>
#include <stdint.h>
#include <stdlib.h>
#include <unistd.h>
#include <wayland-server-protocol.h>
#include <wayland-util.h>
#include <wlr/render/drm_syncobj.h>
#include <wlr/render/egl.h>
#include <wlr/render/interface.h>
#include <wlr/render/wlr_texture.h>
@ -201,6 +203,27 @@ static bool gles2_texture_read_pixels(struct wlr_texture *wlr_texture,
return false;
}
if (options->wait_timeline != NULL) {
int sync_file_fd =
wlr_drm_syncobj_timeline_export_sync_file(options->wait_timeline, options->wait_point);
if (sync_file_fd < 0) {
return false;
}
struct wlr_gles2_renderer *renderer = texture->renderer;
EGLSyncKHR sync = wlr_egl_create_sync(renderer->egl, sync_file_fd);
close(sync_file_fd);
if (sync == EGL_NO_SYNC_KHR) {
return false;
}
bool ok = wlr_egl_wait_sync(renderer->egl, sync);
wlr_egl_destroy_sync(renderer->egl, sync);
if (!ok) {
return false;
}
}
// Make sure any pending drawing is finished before we try to read it
glFinish();