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vulkan: use plain fences when timeline semaphores are not available

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This commit is contained in:
Liam 2023-04-14 22:53:37 -04:00
parent e0895a8581
commit e3fb9b5e00
4 changed files with 161 additions and 68 deletions
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139
src/video_core/renderer_vulkan/vk_master_semaphore.cpp
View file

@ -10,7 +10,14 @@
namespace Vulkan {
MasterSemaphore::MasterSemaphore(const Device& device) {
MasterSemaphore::MasterSemaphore(const Device& device_) : device(device_) {
if (!device.HasTimelineSemaphore()) {
static constexpr VkFenceCreateInfo fence_ci{
.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO, .pNext = nullptr, .flags = 0};
fence = device.GetLogical().CreateFence(fence_ci);
return;
}
static constexpr VkSemaphoreTypeCreateInfo semaphore_type_ci{
.sType = VK_STRUCTURE_TYPE_SEMAPHORE_TYPE_CREATE_INFO,
.pNext = nullptr,
@ -42,4 +49,134 @@ MasterSemaphore::MasterSemaphore(const Device& device) {
MasterSemaphore::~MasterSemaphore() = default;
void MasterSemaphore::Refresh() {
if (!semaphore) {
// If we don't support timeline semaphores, there's nothing to refresh
return;
}
u64 this_tick{};
u64 counter{};
do {
this_tick = gpu_tick.load(std::memory_order_acquire);
counter = semaphore.GetCounter();
if (counter < this_tick) {
return;
}
} while (!gpu_tick.compare_exchange_weak(this_tick, counter, std::memory_order_release,
std::memory_order_relaxed));
}
void MasterSemaphore::Wait(u64 tick) {
if (!semaphore) {
// If we don't support timeline semaphores, use an atomic wait
while (true) {
u64 current_value = gpu_tick.load(std::memory_order_relaxed);
if (current_value >= tick) {
return;
}
gpu_tick.wait(current_value);
}
return;
}
// No need to wait if the GPU is ahead of the tick
if (IsFree(tick)) {
return;
}
// Update the GPU tick and try again
Refresh();
if (IsFree(tick)) {
return;
}
// If none of the above is hit, fallback to a regular wait
while (!semaphore.Wait(tick)) {
}
Refresh();
}
VkResult MasterSemaphore::SubmitQueue(vk::CommandBuffer& cmdbuf, VkSemaphore signal_semaphore,
VkSemaphore wait_semaphore, u64 host_tick) {
if (semaphore) {
return SubmitQueueTimeline(cmdbuf, signal_semaphore, wait_semaphore, host_tick);
} else {
return SubmitQueueFence(cmdbuf, signal_semaphore, wait_semaphore, host_tick);
}
}
static constexpr std::array<VkPipelineStageFlags, 2> wait_stage_masks{
VK_PIPELINE_STAGE_ALL_COMMANDS_BIT,
VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT,
};
VkResult MasterSemaphore::SubmitQueueTimeline(vk::CommandBuffer& cmdbuf,
VkSemaphore signal_semaphore,
VkSemaphore wait_semaphore, u64 host_tick) {
const VkSemaphore timeline_semaphore = *semaphore;
const u32 num_signal_semaphores = signal_semaphore ? 2 : 1;
const std::array signal_values{host_tick, u64(0)};
const std::array signal_semaphores{timeline_semaphore, signal_semaphore};
const u32 num_wait_semaphores = wait_semaphore ? 2 : 1;
const std::array wait_values{host_tick - 1, u64(1)};
const std::array wait_semaphores{timeline_semaphore, wait_semaphore};
const VkTimelineSemaphoreSubmitInfo timeline_si{
.sType = VK_STRUCTURE_TYPE_TIMELINE_SEMAPHORE_SUBMIT_INFO,
.pNext = nullptr,
.waitSemaphoreValueCount = num_wait_semaphores,
.pWaitSemaphoreValues = wait_values.data(),
.signalSemaphoreValueCount = num_signal_semaphores,
.pSignalSemaphoreValues = signal_values.data(),
};
const VkSubmitInfo submit_info{
.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO,
.pNext = &timeline_si,
.waitSemaphoreCount = num_wait_semaphores,
.pWaitSemaphores = wait_semaphores.data(),
.pWaitDstStageMask = wait_stage_masks.data(),
.commandBufferCount = 1,
.pCommandBuffers = cmdbuf.address(),
.signalSemaphoreCount = num_signal_semaphores,
.pSignalSemaphores = signal_semaphores.data(),
};
return device.GetGraphicsQueue().Submit(submit_info);
}
VkResult MasterSemaphore::SubmitQueueFence(vk::CommandBuffer& cmdbuf, VkSemaphore signal_semaphore,
VkSemaphore wait_semaphore, u64 host_tick) {
const u32 num_signal_semaphores = signal_semaphore ? 1 : 0;
const u32 num_wait_semaphores = wait_semaphore ? 1 : 0;
const VkSubmitInfo submit_info{
.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO,
.pNext = nullptr,
.waitSemaphoreCount = num_wait_semaphores,
.pWaitSemaphores = &wait_semaphore,
.pWaitDstStageMask = wait_stage_masks.data(),
.commandBufferCount = 1,
.pCommandBuffers = cmdbuf.address(),
.signalSemaphoreCount = num_signal_semaphores,
.pSignalSemaphores = &signal_semaphore,
};
auto result = device.GetGraphicsQueue().Submit(submit_info, *fence);
if (result == VK_SUCCESS) {
fence.Wait();
fence.Reset();
gpu_tick.store(host_tick);
gpu_tick.notify_all();
}
return result;
}
} // namespace Vulkan

48
src/video_core/renderer_vulkan/vk_master_semaphore.h
View file

@ -4,6 +4,8 @@
#pragma once
#include <atomic>
#include <condition_variable>
#include <mutex>
#include <thread>
#include "common/common_types.h"
@ -29,11 +31,6 @@ public:
return gpu_tick.load(std::memory_order_acquire);
}
/// Returns the timeline semaphore handle.
[[nodiscard]] VkSemaphore Handle() const noexcept {
return *semaphore;
}
/// Returns true when a tick has been hit by the GPU.
[[nodiscard]] bool IsFree(u64 tick) const noexcept {
return KnownGpuTick() >= tick;
@ -45,37 +42,24 @@ public:
}
/// Refresh the known GPU tick
void Refresh() {
u64 this_tick{};
u64 counter{};
do {
this_tick = gpu_tick.load(std::memory_order_acquire);
counter = semaphore.GetCounter();
if (counter < this_tick) {
return;
}
} while (!gpu_tick.compare_exchange_weak(this_tick, counter, std::memory_order_release,
std::memory_order_relaxed));
}
void Refresh();
/// Waits for a tick to be hit on the GPU
void Wait(u64 tick) {
// No need to wait if the GPU is ahead of the tick
if (IsFree(tick)) {
return;
}
// Update the GPU tick and try again
Refresh();
if (IsFree(tick)) {
return;
}
// If none of the above is hit, fallback to a regular wait
while (!semaphore.Wait(tick)) {
}
Refresh();
}
void Wait(u64 tick);
/// Submits the device graphics queue, updating the tick as necessary
VkResult SubmitQueue(vk::CommandBuffer& cmdbuf, VkSemaphore signal_semaphore,
VkSemaphore wait_semaphore, u64 host_tick);
private:
VkResult SubmitQueueTimeline(vk::CommandBuffer& cmdbuf, VkSemaphore signal_semaphore,
VkSemaphore wait_semaphore, u64 host_tick);
VkResult SubmitQueueFence(vk::CommandBuffer& cmdbuf, VkSemaphore signal_semaphore,
VkSemaphore wait_semaphore, u64 host_tick);
private:
const Device& device; ///< Device.
vk::Fence fence; ///< Fence.
vk::Semaphore semaphore; ///< Timeline semaphore.
std::atomic<u64> gpu_tick{0}; ///< Current known GPU tick.
std::atomic<u64> current_tick{1}; ///< Current logical tick.

36
src/video_core/renderer_vulkan/vk_scheduler.cpp
View file

@ -212,45 +212,13 @@ void Scheduler::SubmitExecution(VkSemaphore signal_semaphore, VkSemaphore wait_s
const u64 signal_value = master_semaphore->NextTick();
Record([signal_semaphore, wait_semaphore, signal_value, this](vk::CommandBuffer cmdbuf) {
cmdbuf.End();
const VkSemaphore timeline_semaphore = master_semaphore->Handle();
const u32 num_signal_semaphores = signal_semaphore ? 2U : 1U;
const std::array signal_values{signal_value, u64(0)};
const std::array signal_semaphores{timeline_semaphore, signal_semaphore};
const u32 num_wait_semaphores = wait_semaphore ? 2U : 1U;
const std::array wait_values{signal_value - 1, u64(1)};
const std::array wait_semaphores{timeline_semaphore, wait_semaphore};
static constexpr std::array<VkPipelineStageFlags, 2> wait_stage_masks{
VK_PIPELINE_STAGE_ALL_COMMANDS_BIT,
VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT,
};
const VkTimelineSemaphoreSubmitInfo timeline_si{
.sType = VK_STRUCTURE_TYPE_TIMELINE_SEMAPHORE_SUBMIT_INFO,
.pNext = nullptr,
.waitSemaphoreValueCount = num_wait_semaphores,
.pWaitSemaphoreValues = wait_values.data(),
.signalSemaphoreValueCount = num_signal_semaphores,
.pSignalSemaphoreValues = signal_values.data(),
};
const VkSubmitInfo submit_info{
.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO,
.pNext = &timeline_si,
.waitSemaphoreCount = num_wait_semaphores,
.pWaitSemaphores = wait_semaphores.data(),
.pWaitDstStageMask = wait_stage_masks.data(),
.commandBufferCount = 1,
.pCommandBuffers = cmdbuf.address(),
.signalSemaphoreCount = num_signal_semaphores,
.pSignalSemaphores = signal_semaphores.data(),
};
if (on_submit) {
on_submit();
}
switch (const VkResult result = device.GetGraphicsQueue().Submit(submit_info)) {
switch (const VkResult result = master_semaphore->SubmitQueue(
cmdbuf, signal_semaphore, wait_semaphore, signal_value)) {
case VK_SUCCESS:
break;
case VK_ERROR_DEVICE_LOST:

6
src/video_core/vulkan_common/vulkan_device.h
View file

@ -145,7 +145,6 @@
FEATURE_NAME(robustness2, robustImageAccess2) \
FEATURE_NAME(shader_demote_to_helper_invocation, shaderDemoteToHelperInvocation) \
FEATURE_NAME(shader_draw_parameters, shaderDrawParameters) \
FEATURE_NAME(timeline_semaphore, timelineSemaphore) \
FEATURE_NAME(variable_pointer, variablePointers) \
FEATURE_NAME(variable_pointer, variablePointersStorageBuffer)
@ -158,6 +157,7 @@
FEATURE_NAME(provoking_vertex, provokingVertexLast) \
FEATURE_NAME(shader_float16_int8, shaderFloat16) \
FEATURE_NAME(shader_float16_int8, shaderInt8) \
FEATURE_NAME(timeline_semaphore, timelineSemaphore) \
FEATURE_NAME(transform_feedback, transformFeedback) \
FEATURE_NAME(uniform_buffer_standard_layout, uniformBufferStandardLayout) \
FEATURE_NAME(vertex_input_dynamic_state, vertexInputDynamicState)
@ -493,6 +493,10 @@ public:
return extensions.shader_atomic_int64;
}
bool HasTimelineSemaphore() const {
return features.timeline_semaphore.timelineSemaphore;
}
/// Returns the minimum supported version of SPIR-V.
u32 SupportedSpirvVersion() const {
if (instance_version >= VK_API_VERSION_1_3) {