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render: replace wlr_renderer_get_drm_fd() with drm_dev_id

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wlr_renderer_get_drm_fd() forces the renderer to open the DRM node
and keep the FD around for no good reason. Instead, use dev_t to
refer to a DRM device.

This also removes footguns related to FD ownership.
This commit is contained in:
Simon Ser 2023-10-04 12:40:34 +02:00
parent ebef710746
commit 986a2d9f66
13 changed files with 91 additions and 146 deletions
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1
include/wlr/render/interface.h
View file

@ -25,7 +25,6 @@ struct wlr_renderer_impl {
const struct wlr_drm_format_set *(*get_render_formats)(
struct wlr_renderer *renderer);
void (*destroy)(struct wlr_renderer *renderer);
int (*get_drm_fd)(struct wlr_renderer *renderer);
struct wlr_texture *(*texture_from_buffer)(struct wlr_renderer *renderer,
struct wlr_buffer *buffer);
struct wlr_render_pass *(*begin_buffer_pass)(struct wlr_renderer *renderer,

9
include/wlr/render/wlr_renderer.h
View file

@ -29,6 +29,8 @@ struct wlr_renderer {
// Capabilities required for the buffer used as a render target (bitmask of
// enum wlr_buffer_cap)
uint32_t render_buffer_caps;
// DRM device used for rendering, if any
const dev_t *drm_dev_id;
struct {
struct wl_signal destroy;
@ -78,13 +80,6 @@ bool wlr_renderer_init_wl_display(struct wlr_renderer *r,
bool wlr_renderer_init_wl_shm(struct wlr_renderer *r,
struct wl_display *wl_display);
/**
* Obtains the FD of the DRM device used for rendering, or -1 if unavailable.
*
* The caller doesn't have ownership of the FD, it must not close it.
*/
int wlr_renderer_get_drm_fd(struct wlr_renderer *r);
/**
* Destroys the renderer.
*