From f88712a929ee3543f8e1d45c6071f676df339cdb Mon Sep 17 00:00:00 2001
From: Frederico Linhares <fred@linhares.blue>
Date: Tue, 2 Aug 2022 16:52:33 -0300
Subject: refa Use Vulkan for graphics

This is a partial refactory. Some functionalities implemented in
SDL were removed and need reimplementation.
---
 src/vk/queue.hpp | 82 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 src/vk/queue.hpp

(limited to 'src/vk/queue.hpp')

diff --git a/src/vk/queue.hpp b/src/vk/queue.hpp
new file mode 100644
index 0000000..955daa5
--- /dev/null
+++ b/src/vk/queue.hpp
@@ -0,0 +1,82 @@
+/*
+ * Copyright 2022 Frederico de Oliveira Linhares
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef CANDY_GEAR_VK_QUEUE_H
+#define CANDY_GEAR_VK_QUEUE_H 1
+
+#include "core.hpp"
+
+namespace VK
+{
+class QueueFamily;
+
+struct Queue
+{
+  friend class VK::QueueFamily;
+
+  Queue(const Queue &t) = delete;
+  Queue& operator=(const Queue &t) = delete;
+
+  VkQueue queue;
+
+  template<typename T>
+  void submit_one_time_command(
+    const VkCommandBuffer vk_command_buffer, T commands);
+
+  Queue(Queue &&that);
+  Queue& operator=(Queue &&that);
+
+  ~Queue();
+
+private:
+  VK::QueueFamily *queue_family;
+  int queue_index;
+
+  Queue(VK::QueueFamily *queue_family, VkQueue queue, int queue_index);
+};
+
+template<typename T> void
+Queue::submit_one_time_command(
+  const VkCommandBuffer vk_command_buffer, T commands)
+{
+  VkCommandBufferBeginInfo buffer_begin_info{};
+  buffer_begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
+  buffer_begin_info.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
+
+  vkBeginCommandBuffer(vk_command_buffer, &buffer_begin_info);
+
+  commands();
+
+  vkEndCommandBuffer(vk_command_buffer);
+
+  VkSubmitInfo submit_info{};
+  submit_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
+  submit_info.pNext = nullptr;
+  submit_info.waitSemaphoreCount = 0;
+  submit_info.pWaitSemaphores = nullptr;
+  submit_info.pWaitDstStageMask = nullptr;
+  submit_info.commandBufferCount = 1;
+  submit_info.pCommandBuffers = &vk_command_buffer;
+  submit_info.signalSemaphoreCount = 0;
+  submit_info.pSignalSemaphores = nullptr;
+
+  vkQueueSubmit(this->queue, 1, &submit_info, VK_NULL_HANDLE);
+  vkQueueWaitIdle(this->queue);
+}
+
+}
+
+#endif /* CANDY_GEAR_VK_QUEUE_H */
-- 
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