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buffer_queue: better use of std::array

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This commit is contained in:
ameerj 2020-12-18 00:12:14 -05:00
parent 8cb683f3b9
commit 873ad1272e
1 changed files with 46 additions and 59 deletions
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105
src/core/hle/service/nvflinger/buffer_queue.cpp
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@ -22,6 +22,7 @@ BufferQueue::BufferQueue(Kernel::KernelCore& kernel, u32 id, u64 layer_id)
BufferQueue::~BufferQueue() = default;
void BufferQueue::SetPreallocatedBuffer(u32 slot, const IGBPBuffer& igbp_buffer) {
ASSERT(slot < buffer_slots);
LOG_WARNING(Service, "Adding graphics buffer {}", slot);
free_buffers.push_back(slot);
@ -44,73 +45,57 @@ std::optional<std::pair<u32, Service::Nvidia::MultiFence*>> BufferQueue::Dequeue
if (free_buffers.empty()) {
return std::nullopt;
}
auto f_itr = free_buffers.begin();
auto itr = buffers.end();
auto slot = buffers.size();
while (f_itr != free_buffers.end()) {
auto slot = *f_itr;
itr = std::find_if(buffers.begin(), buffers.end(), [&](const Buffer& buffer) {
// Only consider free buffers. Buffers become free once again after they've been
// Acquired and Released by the compositor, see the NVFlinger::Compose method.
if (buffer.status != Buffer::Status::Free) {
return false;
}
if (buffer.slot != slot) {
return false;
}
// Make sure that the parameters match.
return buffer.igbp_buffer.width == width && buffer.igbp_buffer.height == height;
});
if (itr != buffers.end()) {
const Buffer& buffer = buffers[*f_itr];
if (buffer.status == Buffer::Status::Free && buffer.igbp_buffer.width == width &&
buffer.igbp_buffer.height == height) {
slot = *f_itr;
free_buffers.erase(f_itr);
break;
}
++f_itr;
}
if (itr == buffers.end()) {
if (slot == buffers.size()) {
return std::nullopt;
}
itr->status = Buffer::Status::Dequeued;
return {{itr->slot, &itr->multi_fence}};
buffers[slot].status = Buffer::Status::Dequeued;
return {{buffers[slot].slot, &buffers[slot].multi_fence}};
}
const IGBPBuffer& BufferQueue::RequestBuffer(u32 slot) const {
auto itr = std::find_if(buffers.begin(), buffers.end(),
[&](const Buffer& buffer) { return buffer.slot == slot; });
ASSERT(itr != buffers.end());
ASSERT(itr->status == Buffer::Status::Dequeued);
return itr->igbp_buffer;
ASSERT(slot < buffers.size());
ASSERT(buffers[slot].status == Buffer::Status::Dequeued);
ASSERT(buffers[slot].slot == slot);
return buffers[slot].igbp_buffer;
}
void BufferQueue::QueueBuffer(u32 slot, BufferTransformFlags transform,
const Common::Rectangle<int>& crop_rect, u32 swap_interval,
Service::Nvidia::MultiFence& multi_fence) {
auto itr = std::find_if(buffers.begin(), buffers.end(),
[&](const Buffer& buffer) { return buffer.slot == slot; });
ASSERT(itr != buffers.end());
ASSERT(itr->status == Buffer::Status::Dequeued);
itr->status = Buffer::Status::Queued;
itr->transform = transform;
itr->crop_rect = crop_rect;
itr->swap_interval = swap_interval;
itr->multi_fence = multi_fence;
ASSERT(slot < buffers.size());
ASSERT(buffers[slot].status == Buffer::Status::Dequeued);
ASSERT(buffers[slot].slot == slot);
buffers[slot].status = Buffer::Status::Queued;
buffers[slot].transform = transform;
buffers[slot].crop_rect = crop_rect;
buffers[slot].swap_interval = swap_interval;
buffers[slot].multi_fence = multi_fence;
queue_sequence.push_back(slot);
}
void BufferQueue::CancelBuffer(u32 slot, const Service::Nvidia::MultiFence& multi_fence) {
const auto itr = std::find_if(buffers.begin(), buffers.end(),
[slot](const Buffer& buffer) { return buffer.slot == slot; });
ASSERT(itr != buffers.end());
ASSERT(itr->status != Buffer::Status::Free);
itr->status = Buffer::Status::Free;
itr->multi_fence = multi_fence;
itr->swap_interval = 0;
ASSERT(slot < buffers.size());
ASSERT(buffers[slot].status != Buffer::Status::Free);
ASSERT(buffers[slot].slot == slot);
buffers[slot].status = Buffer::Status::Free;
buffers[slot].multi_fence = multi_fence;
buffers[slot].swap_interval = 0;
free_buffers.push_back(slot);
@ -118,28 +103,30 @@ void BufferQueue::CancelBuffer(u32 slot, const Service::Nvidia::MultiFence& mult
}
std::optional<std::reference_wrapper<const BufferQueue::Buffer>> BufferQueue::AcquireBuffer() {
auto itr = buffers.end();
std::size_t buffer_slot = buffers.size();
// Iterate to find a queued buffer matching the requested slot.
while (itr == buffers.end() && !queue_sequence.empty()) {
const u32 slot = queue_sequence.front();
itr = std::find_if(buffers.begin(), buffers.end(), [&slot](const Buffer& buffer) {
return buffer.status == Buffer::Status::Queued && buffer.slot == slot;
});
while (buffer_slot == buffers.size() && !queue_sequence.empty()) {
const auto slot = static_cast<std::size_t>(queue_sequence.front());
ASSERT(slot < buffers.size());
if (buffers[slot].status == Buffer::Status::Queued) {
ASSERT(buffers[slot].slot == slot);
buffer_slot = slot;
}
queue_sequence.pop_front();
}
if (itr == buffers.end()) {
if (buffer_slot == buffers.size()) {
return std::nullopt;
}
itr->status = Buffer::Status::Acquired;
return *itr;
buffers[buffer_slot].status = Buffer::Status::Acquired;
return {{buffers[buffer_slot]}};
}
void BufferQueue::ReleaseBuffer(u32 slot) {
auto itr = std::find_if(buffers.begin(), buffers.end(),
[&](const Buffer& buffer) { return buffer.slot == slot; });
ASSERT(itr != buffers.end());
ASSERT(itr->status == Buffer::Status::Acquired);
itr->status = Buffer::Status::Free;
ASSERT(slot < buffers.size());
ASSERT(buffers[slot].status == Buffer::Status::Acquired);
ASSERT(buffers[slot].slot == slot);
buffers[slot].status = Buffer::Status::Free;
free_buffers.push_back(slot);
buffer_wait_event.writable->Signal();