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nvflinger: Acquire buffers in the same order as they were queued.
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@ -75,12 +75,18 @@ void BufferQueue::QueueBuffer(u32 slot, BufferTransformFlags transform,
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itr->crop_rect = crop_rect;
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itr->swap_interval = swap_interval;
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itr->multi_fence = multi_fence;
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queue_sequence.push_back(slot);
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}
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std::optional<std::reference_wrapper<const BufferQueue::Buffer>> BufferQueue::AcquireBuffer() {
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auto itr = std::find_if(queue.begin(), queue.end(), [](const Buffer& buffer) {
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return buffer.status == Buffer::Status::Queued;
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});
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std::vector<Buffer>::iterator itr = queue.end();
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while (itr == queue.end() && !queue_sequence.empty()) {
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u32 slot = queue_sequence.front();
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itr = std::find_if(queue.begin(), queue.end(), [&slot](const Buffer& buffer) {
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return buffer.status == Buffer::Status::Queued && buffer.slot == slot;
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});
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queue_sequence.pop_front();
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}
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if (itr == queue.end())
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return {};
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itr->status = Buffer::Status::Acquired;
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@ -6,6 +6,7 @@
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#include <optional>
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#include <vector>
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#include <list>
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#include "common/common_funcs.h"
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#include "common/math_util.h"
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@ -97,6 +98,7 @@ private:
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u64 layer_id;
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std::vector<Buffer> queue;
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std::list<u32> queue_sequence;
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Kernel::EventPair buffer_wait_event;
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};
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