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/destination_buffer.cpp | 105 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 105 insertions(+)
 create mode 100644 src/vk/destination_buffer.cpp

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

diff --git a/src/vk/destination_buffer.cpp b/src/vk/destination_buffer.cpp
new file mode 100644
index 0000000..872f8a8
--- /dev/null
+++ b/src/vk/destination_buffer.cpp
@@ -0,0 +1,105 @@
+/*
+ * 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 "destination_buffer.hpp"
+
+#include "command_pool.hpp"
+
+namespace VK
+{
+
+DestinationBuffer::DestinationBuffer(
+  QueueFamily *queue_family, SourceBuffer *source_buffer,
+  VkBufferUsageFlags buffer_usage)
+{
+  this->device = queue_family->device;
+  this->device_size = source_buffer->device_size;
+  this->buffer_usage = VK_BUFFER_USAGE_TRANSFER_DST_BIT | buffer_usage;
+  this->memory_properties = VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT;
+  this->queue_family = queue_family;
+  this->source_buffer = source_buffer;
+
+  BaseBuffer::loader.execute(dynamic_cast<BaseBuffer*>(this));
+
+  // Load command
+  {
+    CommandPool command_pool(this->queue_family, 1);
+    Queue transfer_queue{this->queue_family->get_queue()};
+
+    this->vk_command_buffer = command_pool.command_buffers[0];
+
+    VkCommandBufferBeginInfo begin_info = {};
+    begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
+    begin_info.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
+
+    VkBufferCopy copy_region = {};
+    copy_region.srcOffset = 0;
+    copy_region.dstOffset = 0;
+    copy_region.size = this->device_size;
+
+    vkBeginCommandBuffer(this->vk_command_buffer, &begin_info);
+
+    vkCmdCopyBuffer(
+      this->vk_command_buffer, this->source_buffer->buffer, this->buffer, 1,
+      &copy_region);
+
+    vkEndCommandBuffer(this->vk_command_buffer);
+
+    VkSubmitInfo submit_info = {};
+    submit_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
+    submit_info.commandBufferCount = 1;
+    submit_info.pCommandBuffers = &this->vk_command_buffer;
+
+    vkQueueSubmit(transfer_queue.queue, 1, &submit_info, VK_NULL_HANDLE);
+
+    vkQueueWaitIdle(transfer_queue.queue);
+  }
+}
+
+DestinationBuffer::DestinationBuffer(
+  DestinationBuffer &&that)
+{
+  this->buffer = that.buffer;
+  this->device_memory = that.device_memory;
+  this->device_size = that.device_size;
+  this->buffer_usage = that.buffer_usage;
+  this->memory_properties = that.memory_properties;
+
+  that.buffer = VK_NULL_HANDLE;
+  that.device_memory = VK_NULL_HANDLE;
+}
+
+DestinationBuffer&
+DestinationBuffer::operator=(DestinationBuffer &&that)
+{
+  this->buffer = that.buffer;
+  this->device_memory = that.device_memory;
+  this->device_size = that.device_size;
+  this->buffer_usage = that.buffer_usage;
+  this->memory_properties = that.memory_properties;
+
+  that.buffer = VK_NULL_HANDLE;
+  that.device_memory = VK_NULL_HANDLE;
+
+  return *this;
+}
+
+DestinationBuffer::~DestinationBuffer()
+{
+  BaseBuffer::loader.revert(dynamic_cast<BaseBuffer*>(this));
+}
+
+}
-- 
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