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[dxvk] Implement dynamic present mode switching

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This way, we don't need to recreate the swap chain when the app switches
between vsync enabled and disabled. Currently only works when running
bleeding-edge Gamescope with ENABLE_GAMESCOPE_WSI=1.
This commit is contained in:
Philip Rebohle 2023-05-29 18:04:06 +02:00
parent e6be0cf996
commit 85d52ccb88
2 changed files with 157 additions and 33 deletions
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184
src/dxvk/dxvk_presenter.cpp
View File

@ -1,3 +1,5 @@
#include <algorithm>
#include "dxvk_device.h"
#include "dxvk_presenter.h"
@ -52,6 +54,10 @@ namespace dxvk {
VkResult Presenter::presentImage(VkPresentModeKHR mode) {
PresenterSync sync = m_semaphores.at(m_frameIndex);
VkSwapchainPresentModeInfoEXT modeInfo = { VK_STRUCTURE_TYPE_SWAPCHAIN_PRESENT_MODE_INFO_EXT };
modeInfo.swapchainCount = 1;
modeInfo.pPresentModes = &mode;
VkPresentInfoKHR info = { VK_STRUCTURE_TYPE_PRESENT_INFO_KHR };
info.waitSemaphoreCount = 1;
info.pWaitSemaphores = &sync.present;
@ -59,6 +65,9 @@ namespace dxvk {
info.pSwapchains = &m_swapchain;
info.pImageIndices = &m_imageIndex;
if (m_device->features().extSwapchainMaintenance1.swapchainMaintenance1)
info.pNext = &modeInfo;
VkResult status = m_vkd->vkQueuePresentKHR(
m_device->queues().graphics.queueHandle, &info);
@ -103,30 +112,39 @@ namespace dxvk {
if (!m_surface)
return VK_ERROR_SURFACE_LOST_KHR;
// Query surface capabilities. Some properties might
// have changed, including the size limits and supported
// present modes, so we'll just query everything again.
VkSurfaceCapabilitiesKHR caps;
VkSurfaceFullScreenExclusiveInfoEXT fullScreenExclusiveInfo = { VK_STRUCTURE_TYPE_SURFACE_FULL_SCREEN_EXCLUSIVE_INFO_EXT };
fullScreenExclusiveInfo.fullScreenExclusive = desc.fullScreenExclusive;
VkPhysicalDeviceSurfaceInfo2KHR surfaceInfo = { VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SURFACE_INFO_2_KHR };
surfaceInfo.surface = m_surface;
if (m_device->features().extFullScreenExclusive)
surfaceInfo.pNext = &fullScreenExclusiveInfo;
// Query surface capabilities. Some properties might have changed,
// including the size limits and supported present modes, so we'll
// just query everything again.
VkSurfaceCapabilities2KHR caps = { VK_STRUCTURE_TYPE_SURFACE_CAPABILITIES_2_KHR };
std::vector<VkSurfaceFormatKHR> formats;
std::vector<VkPresentModeKHR> modes;
std::vector<VkPresentModeKHR> modes;
VkResult status;
if ((status = m_vki->vkGetPhysicalDeviceSurfaceCapabilitiesKHR(
m_device->adapter()->handle(), m_surface, &caps)))
if (m_device->features().extFullScreenExclusive) {
status = m_vki->vkGetPhysicalDeviceSurfaceCapabilitiesKHR(
m_device->adapter()->handle(), m_surface, &caps.surfaceCapabilities);
} else {
status = m_vki->vkGetPhysicalDeviceSurfaceCapabilities2KHR(
m_device->adapter()->handle(), &surfaceInfo, &caps);
}
if (status)
return status;
if ((status = getSupportedFormats(formats, desc.fullScreenExclusive)))
return status;
if ((status = getSupportedPresentModes(modes, desc.fullScreenExclusive)))
return status;
// Select actual swap chain properties and create swap chain
m_info.format = pickFormat(formats.size(), formats.data(), desc.numFormats, desc.formats);
m_info.presentMode = pickPresentMode(modes.size(), modes.data(), m_info.syncInterval);
m_info.imageExtent = pickImageExtent(caps, desc.imageExtent);
m_info.imageCount = pickImageCount(caps, m_info.presentMode, desc.imageCount);
// Select image extent based on current surface capabilities, and return
// immediately if we cannot create an actual swap chain.
m_info.imageExtent = pickImageExtent(caps.surfaceCapabilities, desc.imageExtent);
if (!m_info.imageExtent.width || !m_info.imageExtent.height) {
m_info.imageCount = 0;
@ -134,9 +152,102 @@ namespace dxvk {
return VK_SUCCESS;
}
// Select format based on swap chain properties
if ((status = getSupportedFormats(formats, desc.fullScreenExclusive)))
return status;
m_info.format = pickFormat(formats.size(), formats.data(), desc.numFormats, desc.formats);
// Select a present mode for the current sync interval
if ((status = getSupportedPresentModes(modes, desc.fullScreenExclusive)))
return status;
m_info.presentMode = pickPresentMode(modes.size(), modes.data(), m_info.syncInterval);
// Check whether we can change present modes dynamically. This may
// influence the image count as well as further swap chain creation.
std::vector<VkPresentModeKHR> dynamicModes = {{
pickPresentMode(modes.size(), modes.data(), 0),
pickPresentMode(modes.size(), modes.data(), 1),
}};
std::vector<VkPresentModeKHR> compatibleModes;
// As for the minimum image count, start with the most generic value
// that works with all present modes.
uint32_t minImageCount = caps.surfaceCapabilities.minImageCount;
uint32_t maxImageCount = caps.surfaceCapabilities.maxImageCount;
if (m_device->features().extSwapchainMaintenance1.swapchainMaintenance1) {
VkSurfacePresentModeCompatibilityEXT compatibleModeInfo = { VK_STRUCTURE_TYPE_SURFACE_PRESENT_MODE_COMPATIBILITY_EXT };
VkSurfacePresentModeEXT presentModeInfo = { VK_STRUCTURE_TYPE_SURFACE_PRESENT_MODE_EXT };
presentModeInfo.pNext = const_cast<void*>(std::exchange(surfaceInfo.pNext, &presentModeInfo));
presentModeInfo.presentMode = m_info.presentMode;
caps.pNext = &compatibleModeInfo;
if ((status = m_vki->vkGetPhysicalDeviceSurfaceCapabilities2KHR(
m_device->adapter()->handle(), &surfaceInfo, &caps)))
return status;
compatibleModes.resize(compatibleModeInfo.presentModeCount);
compatibleModeInfo.pPresentModes = compatibleModes.data();
if ((status = m_vki->vkGetPhysicalDeviceSurfaceCapabilities2KHR(
m_device->adapter()->handle(), &surfaceInfo, &caps)))
return status;
// Remove modes we don't need for the purpose of finding the minimum
// image count, as well as for swap chain creation later.
compatibleModes.erase(std::remove_if(compatibleModes.begin(), compatibleModes.end(),
[&dynamicModes] (VkPresentModeKHR mode) {
return std::find(dynamicModes.begin(), dynamicModes.end(), mode) == dynamicModes.end();
}), compatibleModes.end());
minImageCount = 0;
caps.pNext = nullptr;
for (auto mode : compatibleModes) {
presentModeInfo.presentMode = mode;
if ((status = m_vki->vkGetPhysicalDeviceSurfaceCapabilities2KHR(
m_device->adapter()->handle(), &surfaceInfo, &caps)))
return status;
minImageCount = std::max(minImageCount, caps.surfaceCapabilities.minImageCount);
if (caps.surfaceCapabilities.maxImageCount) {
maxImageCount = maxImageCount
? std::min(maxImageCount, caps.surfaceCapabilities.maxImageCount)
: caps.surfaceCapabilities.maxImageCount;
}
}
// If any required mode is not supported for dynamic present
// mode switching, clear the dynamic mode array.
for (auto mode : dynamicModes) {
if (std::find(compatibleModes.begin(), compatibleModes.end(), mode) == compatibleModes.end()) {
dynamicModes.clear();
break;
}
}
} else if (dynamicModes[0] != dynamicModes[1]) {
// If we can't switch modes dynamically, clear the
// array so that setSyncInterval errors out properly.
dynamicModes.clear();
}
// Compute swap chain image count based on available info
m_info.imageCount = pickImageCount(minImageCount, maxImageCount, desc.imageCount);
VkSurfaceFullScreenExclusiveInfoEXT fullScreenInfo = { VK_STRUCTURE_TYPE_SURFACE_FULL_SCREEN_EXCLUSIVE_INFO_EXT };
fullScreenInfo.fullScreenExclusive = desc.fullScreenExclusive;
VkSwapchainPresentModesCreateInfoEXT modeInfo = { VK_STRUCTURE_TYPE_SWAPCHAIN_PRESENT_MODES_CREATE_INFO_EXT };
modeInfo.presentModeCount = compatibleModes.size();
modeInfo.pPresentModes = compatibleModes.data();
VkSwapchainCreateInfoKHR swapInfo = { VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR };
swapInfo.surface = m_surface;
swapInfo.minImageCount = m_info.imageCount;
@ -151,16 +262,18 @@ namespace dxvk {
swapInfo.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
swapInfo.presentMode = m_info.presentMode;
swapInfo.clipped = VK_TRUE;
swapInfo.oldSwapchain = VK_NULL_HANDLE;
if (m_device->features().extFullScreenExclusive)
swapInfo.pNext = &fullScreenInfo;
fullScreenInfo.pNext = const_cast<void*>(std::exchange(swapInfo.pNext, &fullScreenInfo));
if (m_device->features().extSwapchainMaintenance1.swapchainMaintenance1)
modeInfo.pNext = std::exchange(swapInfo.pNext, &modeInfo);
Logger::info(str::format(
"Presenter: Actual swap chain properties:"
"\n Format: ", m_info.format.format,
"\n Color space: ", m_info.format.colorSpace,
"\n Present mode: ", m_info.presentMode,
"\n Present mode: ", m_info.presentMode, " (dynamic: ", (dynamicModes.empty() ? "no)" : "yes)"),
"\n Buffer size: ", m_info.imageExtent.width, "x", m_info.imageExtent.height,
"\n Image count: ", m_info.imageCount,
"\n Exclusive FS: ", desc.fullScreenExclusive));
@ -217,6 +330,8 @@ namespace dxvk {
m_imageIndex = 0;
m_frameIndex = 0;
m_acquireStatus = VK_NOT_READY;
m_dynamicModes = std::move(dynamicModes);
return VK_SUCCESS;
}
@ -235,11 +350,20 @@ namespace dxvk {
VkResult Presenter::setSyncInterval(uint32_t syncInterval) {
// Normalize sync interval for present modes. We currently
// cannot support anything other than 1 natively anyway.
syncInterval = std::min(syncInterval, 1u);
if (syncInterval == m_info.syncInterval)
return VK_SUCCESS;
m_info.syncInterval = syncInterval;
return VK_ERROR_OUT_OF_DATE_KHR;
if (syncInterval >= m_dynamicModes.size())
return VK_ERROR_OUT_OF_DATE_KHR;
m_info.presentMode = m_dynamicModes[syncInterval];
return VK_SUCCESS;
}
@ -426,19 +550,16 @@ namespace dxvk {
uint32_t Presenter::pickImageCount(
const VkSurfaceCapabilitiesKHR& caps,
VkPresentModeKHR presentMode,
uint32_t minImageCount,
uint32_t maxImageCount,
uint32_t desired) {
uint32_t count = caps.minImageCount;
if (presentMode != VK_PRESENT_MODE_IMMEDIATE_KHR)
count = caps.minImageCount + 1;
uint32_t count = minImageCount + 1;
if (count < desired)
count = desired;
if (count > caps.maxImageCount && caps.maxImageCount != 0)
count = caps.maxImageCount;
if (count > maxImageCount && maxImageCount != 0)
count = maxImageCount;
return count;
}
@ -457,6 +578,7 @@ namespace dxvk {
m_images.clear();
m_semaphores.clear();
m_dynamicModes.clear();
m_swapchain = VK_NULL_HANDLE;
}

6
src/dxvk/dxvk_presenter.h
View File

@ -208,6 +208,8 @@ namespace dxvk {
std::vector<PresenterImage> m_images;
std::vector<PresenterSync> m_semaphores;
std::vector<VkPresentModeKHR> m_dynamicModes;
uint32_t m_imageIndex = 0;
uint32_t m_frameIndex = 0;
@ -245,8 +247,8 @@ namespace dxvk {
VkExtent2D desired);
uint32_t pickImageCount(
const VkSurfaceCapabilitiesKHR& caps,
VkPresentModeKHR presentMode,
uint32_t minImageCount,
uint32_t maxImageCount,
uint32_t desired);
VkResult createSurface();