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/command_pool.cpp | 87 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 src/vk/command_pool.cpp

(limited to 'src/vk/command_pool.cpp')

diff --git a/src/vk/command_pool.cpp b/src/vk/command_pool.cpp
new file mode 100644
index 0000000..3af62c1
--- /dev/null
+++ b/src/vk/command_pool.cpp
@@ -0,0 +1,87 @@
+/*
+ * 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.
+ */
+
+#include "command_pool.hpp"
+
+namespace VK
+{
+
+const CommandChain CommandPool::loader{
+  {&CommandPool::load_command_pool, &CommandPool::unload_command_pool},
+  {&CommandPool::load_command_buffers, nullptr}
+};
+
+CommandPool::CommandPool(QueueFamily *queue_family, uint32_t buffers_quantity):
+  queue_family{queue_family}
+{
+  this->command_buffers.resize(buffers_quantity);
+
+  CommandPool::loader.execute(this);
+}
+
+CommandPool::~CommandPool()
+{
+  CommandPool::loader.revert(this);
+}
+
+void
+CommandPool::load_command_pool(void *obj)
+{
+  auto *self = static_cast<CommandPool*>(obj);
+
+  VkCommandPoolCreateInfo command_pool_create_info;
+
+  command_pool_create_info.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
+  command_pool_create_info.pNext = nullptr;
+  command_pool_create_info.flags =
+      VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
+  command_pool_create_info.queueFamilyIndex = self->queue_family->family_index;
+
+  if(vkCreateCommandPool(
+       self->queue_family->device->device, &command_pool_create_info,
+       nullptr, &self->command_pool) != VK_SUCCESS)
+    throw CommandError{"Vulkan command pool could not be created."};
+}
+
+void
+CommandPool::unload_command_pool(void *obj)
+{
+   auto *self = static_cast<CommandPool*>(obj);
+
+  vkDestroyCommandPool(
+    self->queue_family->device->device, self->command_pool, nullptr);
+}
+
+void
+CommandPool::load_command_buffers(void *obj)
+{
+  auto *self = static_cast<CommandPool*>(obj);
+
+  VkCommandBufferAllocateInfo command_buffer_info;
+  command_buffer_info.sType =
+    VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
+  command_buffer_info.pNext = nullptr;
+  command_buffer_info.commandPool = self->command_pool;
+  command_buffer_info.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
+  command_buffer_info.commandBufferCount = self->command_buffers.size();
+
+  if(vkAllocateCommandBuffers(
+       self->queue_family->device->device,
+       &command_buffer_info, self->command_buffers.data()) != VK_SUCCESS)
+    throw CommandError{"Vulkan command buffers could not be allocated."};
+}
+
+}
-- 
cgit v1.2.3