1 files changed, 84 insertions, 0 deletions
diff --git a/engine/render/vulkan/fence.c b/engine/render/vulkan/fence.c
new file mode 100644
index 0000000..cee022e
--- /dev/null
+++ b/engine/render/vulkan/fence.c
@@ -0,0 +1,84 @@
+/*
+ * Rune Game Engine
+ * Copyright 2024 Danny Holman <dholman@gymli.org>
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty.  In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ *
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software. If you use this software
+ *    in a product, an acknowledgment in the product documentation would be
+ *    appreciated but is not required.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+ */
+
+#include "fence.h"
+#include "vkassert.h"
+#include <rune/core/logging.h>
+#include <rune/core/alloc.h>
+
+vkfence_t* create_vkfence(vkdev_t *dev, uint8_t signal) {
+        vkfence_t *ret = rune_alloc(sizeof(vkfence_t));
+        
+        VkFenceCreateInfo fcinfo;
+        fcinfo.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
+        fcinfo.pNext = NULL;
+        if (signal == 1)
+                fcinfo.flags = VK_FENCE_CREATE_SIGNALED_BIT;
+        else
+                fcinfo.flags = 0;
+        vkassert(vkCreateFence(dev->ldev, &fcinfo, NULL, &ret->handle));
+        return ret;
+}
+
+void destroy_vkfence(vkfence_t *fence, vkdev_t *dev) {
+        if (fence->handle != NULL) {
+                vkDestroyFence(dev->ldev, fence->handle, NULL);
+                fence->handle = NULL;
+        }
+        rune_free(fence);
+}
+
+int fence_lock(vkfence_t *fence, vkdev_t *dev, uint64_t timeout) {
+        if (fence->signal == 1)
+                return 0;
+        
+        VkResult res = vkWaitForFences(dev->ldev, 1, &fence->handle, VK_TRUE, timeout);
+        switch (res) {
+                case VK_SUCCESS:
+                        fence->signal = 1;
+                        return 0;
+                case VK_TIMEOUT:
+                        log_output(LOG_WARN, "Vulkan fence timed out");
+                        break;
+                case VK_ERROR_DEVICE_LOST:
+                        log_output(LOG_ERROR, "Lost access to host device");
+                        break;
+                case VK_ERROR_OUT_OF_HOST_MEMORY:
+                        log_output(LOG_ERROR, "Out of host memory");
+                        break;
+                case VK_ERROR_OUT_OF_DEVICE_MEMORY:
+                        log_output(LOG_ERROR, "Out of device memory");
+                        break;
+                default:
+                        log_output(LOG_ERROR, "Unknown error occurred on Vulkan fence");
+                        break;
+        }
+
+        return -1;
+}
+
+void fence_unlock(vkfence_t *fence, vkdev_t *dev) {
+        if (fence->signal == 0)
+                return;
+
+        vkassert(vkResetFences(dev->ldev, 1, &fence->handle));
+        fence->signal = 0;
+}