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render/drm_format_set: disallow DRM_FORMAT_INVALID

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It doesn't make sense to add DRM_FORMAT_INVALID to a format set. Adding
an assertion allows us to safely query the format set with
DRM_FORMAT_INVALID. See [1].

[1]: https://github.com/swaywm/wlroots/pull/2021#discussion_r385839668
This commit is contained in:
Simon Ser 2020-04-14 18:44:40 +02:00 • committed by Drew DeVault
parent 455a9bd0ef
commit 01d4506253
1 changed files with 2 additions and 0 deletions
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2
render/drm_format_set.c
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@ -1,3 +1,4 @@
#include <assert.h>
#include <drm_fourcc.h>
#include <stdbool.h>
#include <stdint.h>
@ -57,6 +58,7 @@ bool wlr_drm_format_set_has(const struct wlr_drm_format_set *set,
bool wlr_drm_format_set_add(struct wlr_drm_format_set *set, uint32_t format,
uint64_t modifier) {
assert(format != DRM_FORMAT_INVALID);
struct wlr_drm_format **ptr = format_set_get_ref(set, format);
if (ptr) {