render/vulkan: add Vulkan renderer

This new renderer is implemented with the existing wlr_renderer API
(which is known to be sub-optimal for some operations). It's not
used by default, but users can opt-in by setting WLR_RENDERER=vulkan.

The renderer depends on VK_EXT_image_drm_format_modifier and
VK_EXT_physical_device_drm.

Co-authored-by: Simon Ser <contact@emersion.fr>
Co-authored-by: Jan Beich <jbeich@FreeBSD.org>

.builds/alpine.yml

@@ -2,11 +2,14 @@ image: alpine/edge
 packages:
   - eudev-dev
   - ffmpeg-dev
+  - glslang
   - libinput-dev
   - libxkbcommon-dev
   - mesa-dev
   - meson
   - pixman-dev
+  - vulkan-headers
+  - vulkan-loader-dev
   - wayland-dev
   - wayland-protocols
   - xcb-util-image-dev

.builds/archlinux.yml

@@ -15,6 +15,9 @@ packages:
   - xcb-util-wm
   - xorg-xwayland
   - seatd
+  - vulkan-icd-loader
+  - vulkan-headers
+  - glslang
 sources:
   - https://github.com/swaywm/wlroots
 tasks:

.builds/freebsd.yml

@@ -5,9 +5,12 @@ packages:
   - devel/libudev-devd
   - devel/meson # implies ninja
   - devel/pkgconf
+  - graphics/glslang
   - graphics/libdrm
   - graphics/mesa-libs
   - graphics/png
+  - graphics/vulkan-headers
+  - graphics/vulkan-loader
   - graphics/wayland
   - graphics/wayland-protocols
   - multimedia/ffmpeg