wl-mirror v0.18.0

This release finally adds support for DMA-BUFs with the screencopy backend, an all-new extcopy backend for ext-image-copy-capture-v1 which will provide non-wlroots compositor support once other compositors start implementing it, and a few bug-fixes.

New Features

• Added a new screencopy-dmabuf backend that uses DMA-BUFs instead of shared memory. (requires WITH_GBM, see below)
  • Also changed the screencopy backend to automatically choose screencopy-dmabuf over screencopy-shm when available.
• Added new extcopy-dmabuf and extcopy-shm backends that use ext-image-copy-capture-v1 (#46). (extcopy-dmabuf requires WITH_GBM, see below)
  • Also added an extcopy backend that automatically chooses extcopy-dmabuf over extcopy-shm when available.
• Added the CMake option WITH_GBM for using libgbm and libdrm for hardware-agnostic DMA-BUF allocation. This enables the new screencopy-dmabuf and extcopy-dmabuf backends.

Bugfixes

• Fix a potential use-after-free when using --title together with --stream (#53, thanks @danielrainer!)
• Rework stream input handling to be less error-prone (#54, thanks @danielrainer!)
• Fixed missing man-page documentation for --title

Other Changes

• Updated wayland-protocols to 1.41
• Added common DMA-BUF and SHM buffer allocation and import code. This should make adding more backends with both DMA-BUF and SHM support much easier.
• Added common DRM / SHM / GL format database. This should allow finding the correct format for importing textures into GL without needing tables for it in every backend.

Changes since v0.18.0-pre

• Deduplicate initialization code for DMA-BUF / SHM variants of each backend

Upgrading

This release contains new optional dependencies on libgbm and libdrm when the WITH_GBM CMake option is set to ON. Testers should consider enabling this option to be able to use the new DMA-BUF backends.