From 43e1b7cdc70b2fcac8a3e8ee72f5bc91726f4ec5 Mon Sep 17 00:00:00 2001
From: lucy96chen <47800040+lucy96chen@users.noreply.github.com>
Date: Thu, 26 May 2022 10:54:35 -0700
Subject: Split render-vk.h/.cpp into a set of smaller files (#2244)

* Some preliminary work on splitting render-vk

* render-vk split, tests currently crash on null reference

* fixed circular include
---
 tools/gfx/vulkan/vk-fence.cpp | 105 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 tools/gfx/vulkan/vk-fence.cpp

(limited to 'tools/gfx/vulkan/vk-fence.cpp')

diff --git a/tools/gfx/vulkan/vk-fence.cpp b/tools/gfx/vulkan/vk-fence.cpp
new file mode 100644
index 000000000..ce4d29a0c
--- /dev/null
+++ b/tools/gfx/vulkan/vk-fence.cpp
@@ -0,0 +1,105 @@
+// vk-fence.cpp
+#include "vk-fence.h"
+
+#include "vk-device.h"
+#include "vk-util.h"
+
+namespace gfx
+{
+
+using namespace Slang;
+
+namespace vk
+{
+
+FenceImpl::FenceImpl(DeviceImpl* device)
+    : m_device(device)
+{}
+
+FenceImpl::~FenceImpl()
+{
+    if (m_semaphore)
+    {
+        m_device->m_api.vkDestroySemaphore(m_device->m_api.m_device, m_semaphore, nullptr);
+    }
+}
+
+Result FenceImpl::init(const IFence::Desc& desc)
+{
+    if (!m_device->m_api.m_extendedFeatures.timelineFeatures.timelineSemaphore)
+        return SLANG_E_NOT_AVAILABLE;
+
+    VkSemaphoreTypeCreateInfo timelineCreateInfo;
+    timelineCreateInfo.sType = VK_STRUCTURE_TYPE_SEMAPHORE_TYPE_CREATE_INFO;
+    timelineCreateInfo.pNext = nullptr;
+    timelineCreateInfo.semaphoreType = VK_SEMAPHORE_TYPE_TIMELINE;
+    timelineCreateInfo.initialValue = desc.initialValue;
+
+    VkSemaphoreCreateInfo createInfo;
+    createInfo.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
+    createInfo.pNext = &timelineCreateInfo;
+    createInfo.flags = 0;
+
+    SLANG_VK_RETURN_ON_FAIL(m_device->m_api.vkCreateSemaphore(
+        m_device->m_api.m_device, &createInfo, nullptr, &m_semaphore));
+
+    return SLANG_OK;
+}
+
+Result FenceImpl::getCurrentValue(uint64_t* outValue)
+{
+    SLANG_VK_RETURN_ON_FAIL(m_device->m_api.vkGetSemaphoreCounterValue(
+        m_device->m_api.m_device, m_semaphore, outValue));
+    return SLANG_OK;
+}
+
+Result FenceImpl::setCurrentValue(uint64_t value)
+{
+    uint64_t currentValue = 0;
+    SLANG_VK_RETURN_ON_FAIL(m_device->m_api.vkGetSemaphoreCounterValue(
+        m_device->m_api.m_device, m_semaphore, &currentValue));
+    if (currentValue < value)
+    {
+        VkSemaphoreSignalInfo signalInfo;
+        signalInfo.sType = VK_STRUCTURE_TYPE_SEMAPHORE_SIGNAL_INFO;
+        signalInfo.pNext = NULL;
+        signalInfo.semaphore = m_semaphore;
+        signalInfo.value = value;
+
+        SLANG_VK_RETURN_ON_FAIL(
+            m_device->m_api.vkSignalSemaphore(m_device->m_api.m_device, &signalInfo));
+    }
+    return SLANG_OK;
+}
+
+Result FenceImpl::getSharedHandle(InteropHandle* outHandle)
+{
+    // Check if a shared handle already exists.
+    if (sharedHandle.handleValue != 0)
+    {
+        *outHandle = sharedHandle;
+        return SLANG_OK;
+    }
+
+#if SLANG_WINDOWS_FAMILY
+    VkSemaphoreGetWin32HandleInfoKHR handleInfo = {
+        VK_STRUCTURE_TYPE_SEMAPHORE_GET_WIN32_HANDLE_INFO_KHR};
+    handleInfo.pNext = nullptr;
+    handleInfo.semaphore = m_semaphore;
+    handleInfo.handleType = VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_OPAQUE_WIN32_BIT;
+
+    SLANG_VK_RETURN_ON_FAIL(m_device->m_api.vkGetSemaphoreWin32HandleKHR(
+        m_device->m_api.m_device, &handleInfo, (HANDLE*)&outHandle->handleValue));
+#endif
+    sharedHandle.api = InteropHandleAPI::Vulkan;
+    return SLANG_OK;
+}
+
+Result FenceImpl::getNativeHandle(InteropHandle* outNativeHandle)
+{
+    outNativeHandle->handleValue = 0;
+    return SLANG_FAIL;
+}
+
+} // namespace vk
+} // namespace gfx
-- 
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