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General: Make use of std::nullopt where applicable

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Allows some implementations to avoid completely zeroing out the internal
buffer of the optional, and instead only set the validity byte within
the structure.

This also makes it consistent how we return empty optionals.
This commit is contained in:
Lioncash 2020-09-22 17:31:53 -04:00
parent f3b0c1b4b5
commit e457001dce
17 changed files with 60 additions and 59 deletions
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6
src/core/hle/service/nvflinger/nvflinger.cpp
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@ -114,7 +114,7 @@ std::optional<u64> NVFlinger::OpenDisplay(std::string_view name) {
[&](const VI::Display& display) { return display.GetName() == name; });
if (itr == displays.end()) {
return {};
return std::nullopt;
}
return itr->GetID();
@ -124,7 +124,7 @@ std::optional<u64> NVFlinger::CreateLayer(u64 display_id) {
auto* const display = FindDisplay(display_id);
if (display == nullptr) {
return {};
return std::nullopt;
}
const u64 layer_id = next_layer_id++;
@ -144,7 +144,7 @@ std::optional<u32> NVFlinger::FindBufferQueueId(u64 display_id, u64 layer_id) co
const auto* const layer = FindLayer(display_id, layer_id);
if (layer == nullptr) {
return {};
return std::nullopt;
}
return layer->GetBufferQueue().GetId();