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Code Issues Releases Activity

vulkan_instance: Initialize Vulkan instance in a separate thread

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Workaround an issue on Nvidia where creating a Vulkan instance from an
active OpenGL thread disables threaded optimization on the driver.
This optimization is important to have good performance on Nvidia
OpenGL.
This commit is contained in:
ReinUsesLisp 2021-01-16 20:25:51 -03:00
parent dde19e7d75
commit 9735c34f5d
1 changed files with 5 additions and 1 deletions
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6
src/video_core/vulkan_common/vulkan_instance.cpp
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@ -3,6 +3,7 @@
// Refer to the license.txt file included. // Refer to the license.txt file included.
#include <algorithm> #include <algorithm>
#include <future>
#include <optional> #include <optional>
#include <span> #include <span>
#include <utility> #include <utility>
@ -140,7 +141,10 @@ vk::Instance CreateInstance(const Common::DynamicLibrary& library, vk::InstanceD
VK_VERSION_MAJOR(required_version), VK_VERSION_MINOR(required_version)); VK_VERSION_MAJOR(required_version), VK_VERSION_MINOR(required_version));
throw vk::Exception(VK_ERROR_INCOMPATIBLE_DRIVER); throw vk::Exception(VK_ERROR_INCOMPATIBLE_DRIVER);
} }
vk::Instance instance = vk::Instance::Create(required_version, layers, extensions, dld); vk::Instance instance =
std::async([&] {
return vk::Instance::Create(required_version, layers, extensions, dld);
}).get();
if (!vk::Load(*instance, dld)) { if (!vk::Load(*instance, dld)) {
LOG_ERROR(Render_Vulkan, "Failed to load Vulkan instance function pointers"); LOG_ERROR(Render_Vulkan, "Failed to load Vulkan instance function pointers");
throw vk::Exception(VK_ERROR_INITIALIZATION_FAILED); throw vk::Exception(VK_ERROR_INITIALIZATION_FAILED);