diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c index 054ec73c0a..336dc59007 100644 --- a/hw/display/virtio-gpu.c +++ b/hw/display/virtio-gpu.c @@ -590,7 +590,7 @@ static void virtio_unref_resource(pixman_image_t *image, void *data) static void virtio_gpu_set_scanout(VirtIOGPU *g, struct virtio_gpu_ctrl_command *cmd) { - struct virtio_gpu_simple_resource *res; + struct virtio_gpu_simple_resource *res, *ores; struct virtio_gpu_scanout *scanout; pixman_format_code_t format; uint32_t offset; @@ -664,6 +664,11 @@ static void virtio_gpu_set_scanout(VirtIOGPU *g, dpy_gfx_replace_surface(g->scanout[ss.scanout_id].con, scanout->ds); } + ores = virtio_gpu_find_resource(g, scanout->resource_id); + if (ores) { + ores->scanout_bitmask &= ~(1 << ss.scanout_id); + } + res->scanout_bitmask |= (1 << ss.scanout_id); scanout->resource_id = ss.resource_id; scanout->x = ss.r.x;