linux-dmabuf extension advertized when renderer doesn't support DMA-BUF

[emersion]

We enable it as long as the renderer has the required hook, but we don't check whether the EGL extension is present.

wlroots/render/wlr_renderer.c

Line 186 in b614ded

wlr_linux_dmabuf_v1_create(wl_display, r);