Vulkan-Test/VertexManager.cpp at master · FinalForEach/Vulkan-Test · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
#include "VertexManager.hpp"


void VertexManager::createVertexBuffer()
{
	auto device = deviceManager.getDevice();
	VkDeviceSize bufferSize = sizeof(vertices[0]) * vertices.size();

    VkBuffer stagingBuffer;
    VkDeviceMemory stagingBufferMemory;
    createBuffer(bufferSize, VK_BUFFER_USAGE_TRANSFER_SRC_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, stagingBuffer, stagingBufferMemory);

    void* data;
    vkMapMemory(device, stagingBufferMemory, 0, bufferSize, 0, &data);
        memcpy(data, vertices.data(), (size_t) bufferSize);
    vkUnmapMemory(device, stagingBufferMemory);

    createBuffer(bufferSize, VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_VERTEX_BUFFER_BIT, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, vertexBuffer, vertexBufferMemory);

    copyBuffer(stagingBuffer, vertexBuffer, bufferSize);

    vkDestroyBuffer(device, stagingBuffer, nullptr);
    vkFreeMemory(device, stagingBufferMemory, nullptr);
}
void VertexManager::createIndexBuffer() {
	auto device = deviceManager.getDevice();
    VkDeviceSize bufferSize = sizeof(indices[0]) * indices.size();

    VkBuffer stagingBuffer;
    VkDeviceMemory stagingBufferMemory;
    createBuffer(bufferSize, VK_BUFFER_USAGE_TRANSFER_SRC_BIT, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT, stagingBuffer, stagingBufferMemory);

    void* data;
    vkMapMemory(device, stagingBufferMemory, 0, bufferSize, 0, &data);
    memcpy(data, indices.data(), (size_t) bufferSize);
    vkUnmapMemory(device, stagingBufferMemory);

    createBuffer(bufferSize, VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_INDEX_BUFFER_BIT, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, indexBuffer, indexBufferMemory);

    copyBuffer(stagingBuffer, indexBuffer, bufferSize);

    vkDestroyBuffer(device, stagingBuffer, nullptr);
    vkFreeMemory(device, stagingBufferMemory, nullptr);
}
void VertexManager::copyBuffer(VkBuffer srcBuffer, VkBuffer dstBuffer, VkDeviceSize size) {
	auto device = deviceManager.getDevice();
	auto commandPool = commandManager.getCommandPool();

	VkCommandBufferAllocateInfo allocInfo = {};
    allocInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
    allocInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
    allocInfo.commandPool = commandPool;
    allocInfo.commandBufferCount = 1;

    VkCommandBuffer commandBuffer;
    vkAllocateCommandBuffers(device, &allocInfo, &commandBuffer);

    VkCommandBufferBeginInfo beginInfo = {};
	beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
	beginInfo.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;

	vkBeginCommandBuffer(commandBuffer, &beginInfo);
		VkBufferCopy copyRegion = {};
		copyRegion.srcOffset = 0; // Optional
		copyRegion.dstOffset = 0; // Optional
		copyRegion.size = size;
		vkCmdCopyBuffer(commandBuffer, srcBuffer, dstBuffer, 1, &copyRegion);
	vkEndCommandBuffer(commandBuffer);

	VkSubmitInfo submitInfo = {};
	submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
	submitInfo.commandBufferCount = 1;
	submitInfo.pCommandBuffers = &commandBuffer;

	vkQueueSubmit(graphicsQueue, 1, &submitInfo, VK_NULL_HANDLE);
	vkQueueWaitIdle(graphicsQueue);

	vkFreeCommandBuffers(device, commandPool, 1, &commandBuffer);
}
void VertexManager::cleanup()
{
	auto device = deviceManager.getDevice();
    vkDestroyBuffer(device, indexBuffer, nullptr);
    vkFreeMemory(device, indexBufferMemory, nullptr);

	vkDestroyBuffer(device, vertexBuffer, nullptr);
	vkFreeMemory(device, vertexBufferMemory, nullptr);
}