diff options
Diffstat (limited to 'src/noop-renderer.c')
| -rw-r--r-- | src/noop-renderer.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/src/noop-renderer.c b/src/noop-renderer.c index ad750b5a..72332eb7 100644 --- a/src/noop-renderer.c +++ b/src/noop-renderer.c @@ -49,6 +49,39 @@ noop_renderer_flush_damage(struct weston_surface *surface) static void noop_renderer_attach(struct weston_surface *es, struct weston_buffer *buffer) { + struct wl_shm_buffer *shm_buffer; + uint8_t *data; + uint32_t size, i, width, height, stride; + volatile unsigned char unused = 0; /* volatile so it's not optimized out */ + + if (!buffer) + return; + + shm_buffer = wl_shm_buffer_get(buffer->resource); + + if (!shm_buffer) { + weston_log("No-op renderer supports only SHM buffers\n"); + return; + } + + data = wl_shm_buffer_get_data(shm_buffer); + stride = wl_shm_buffer_get_stride(shm_buffer); + width = wl_shm_buffer_get_width(shm_buffer); + height = wl_shm_buffer_get_height(shm_buffer); + size = stride * height; + + /* Access the buffer data to make sure the buffer's client gets killed + * if the buffer size is invalid. This makes the bad_buffer test pass. + * This can be removed if we start reading the buffer contents + * somewhere else, e.g. in repaint_output(). */ + wl_shm_buffer_begin_access(shm_buffer); + for (i = 0; i < size; i++) + unused ^= data[i]; + wl_shm_buffer_end_access(shm_buffer); + + buffer->shm_buffer = shm_buffer; + buffer->width = width; + buffer->height = height; } static void |