protocol: wl_shm uses pre-multiplied alpha
Add a note about pre-multiplied alpha for all wl_shm formats. Include an escape hatch in the spec to allow other protocol extensions to override this.
Closes: #61 (closed)
Add a note about pre-multiplied alpha for all wl_shm formats. Include an escape hatch in the spec to allow other protocol extensions to override this.
Closes: #61 (closed)