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)
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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)