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Add new struct wlr_multi_gpu

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For development to continue on systems (such as optimus laptops) that
have multiple GPUs, we need a way to reference all of the renderers
that have been created for devices in the system. A wlr_multi_gpu
struct holds renderers coming from two different sources:
1. the primary renderer (given to us by the compositor)
2. drm sub backends, each of which has a renderer created for
   cross-GPU copies.

This change provides a way to access all of these from the same
place.
This commit is contained in:
Austin Shafer 2022-07-27 16:07:21 -04:00
parent ed8961b309
commit 5a38cc57c8
7 changed files with 142 additions and 4 deletions
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3
include/wlr/backend/multi.h
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@ -32,4 +32,7 @@ bool wlr_multi_is_empty(struct wlr_backend *backend);
void wlr_multi_for_each_backend(struct wlr_backend *backend,
void (*callback)(struct wlr_backend *backend, void *data), void *data);
struct wlr_multi_gpu *wlr_multi_gpu_create(void);
void wlr_multi_gpu_destroy(struct wlr_multi_gpu *multi_gpu);
#endif