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#include "device_strategy.hh"
#include "helper.hh"
#include <mutex>
namespace low_latency {
LowLatency2DeviceStrategy::LowLatency2DeviceStrategy(DeviceContext& device)
: DeviceStrategy(device) {}
LowLatency2DeviceStrategy::~LowLatency2DeviceStrategy() {}
void LowLatency2DeviceStrategy::notify_create_swapchain(
const VkSwapchainKHR& swapchain, const VkSwapchainCreateInfoKHR& info) {
// VK_NV_low_latency2 allows a swapchain to be created with the low latency
// mode already on via VkSwapchainLatencyCreateInfoNV.
auto was_low_latency_requested = bool{false};
if (const auto slci = find_next<VkSwapchainLatencyCreateInfoNV>(
&info, VK_STRUCTURE_TYPE_SWAPCHAIN_LATENCY_CREATE_INFO_NV);
slci) {
was_low_latency_requested = slci->latencyModeEnable;
}
const auto lock = std::scoped_lock{this->mutex};
const auto iter = this->swapchain_monitors.emplace(swapchain, this->device);
assert(iter.second);
iter.first->second.update_params(was_low_latency_requested,
std::chrono::microseconds{0});
}
void LowLatency2DeviceStrategy::notify_destroy_swapchain(
const VkSwapchainKHR& swapchain) {
const auto lock = std::scoped_lock{this->mutex};
this->swapchain_monitors.erase(swapchain);
}
} // namespace low_latency
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