100 lines
No EOL
4.2 KiB
C++
100 lines
No EOL
4.2 KiB
C++
/*
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Crafter®.Graphics
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Copyright (C) 2026 Catcrafts®
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catcrafts.net
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License version 3.0 as published by the Free Software Foundation;
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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module;
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#ifdef CRAFTER_GRAPHICS_VULKAN
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#include <vulkan/vulkan.h>
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#endif
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export module Crafter.Graphics:VulkanBuffer;
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#ifdef CRAFTER_GRAPHICS_VULKAN
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import std;
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import :VulkanDevice;
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namespace Crafter {
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export template <typename T>
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class VulkanBuffer {
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public:
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T* value;
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VkDescriptorBufferInfo descriptor;
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VkDeviceSize alignment = 0;
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VkMemoryPropertyFlags memoryPropertyFlags;
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VkBufferUsageFlags usageFlags;
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VkBuffer buffer = VK_NULL_HANDLE;
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VkDeviceMemory memory = VK_NULL_HANDLE;
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VkDeviceAddress address;
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public:
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VulkanBuffer() : value(nullptr) {};
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VulkanBuffer(VkBufferUsageFlags usageFlags, VkMemoryPropertyFlags memoryPropertyFlags, std::uint32_t count = 1) {
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VkBufferCreateInfo bufferCreateInfo {};
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bufferCreateInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
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bufferCreateInfo.usage = usageFlags;
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bufferCreateInfo.size = sizeof(T)*count;
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VulkanDevice::CheckVkResult(vkCreateBuffer(VulkanDevice::device, &bufferCreateInfo, nullptr, &buffer));
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// Create the memory backing up the buffer handle
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VkMemoryRequirements memReqs;
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VkMemoryAllocateInfo memAlloc {};
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memAlloc.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
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vkGetBufferMemoryRequirements(VulkanDevice::device, buffer, &memReqs);
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memAlloc.allocationSize = memReqs.size;
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// Find a memory type index that fits the properties of the buffer
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memAlloc.memoryTypeIndex = VulkanDevice::GetMemoryType(memReqs.memoryTypeBits, memoryPropertyFlags);
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// If the buffer has VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT set we also need to enable the appropriate flag during allocation
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VkMemoryAllocateFlagsInfoKHR allocFlagsInfo{};
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if (usageFlags & VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT) {
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allocFlagsInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_FLAGS_INFO_KHR;
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allocFlagsInfo.flags = VK_MEMORY_ALLOCATE_DEVICE_ADDRESS_BIT_KHR;
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memAlloc.pNext = &allocFlagsInfo;
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}
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VulkanDevice::CheckVkResult(vkAllocateMemory(VulkanDevice::device, &memAlloc, nullptr, &memory));
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alignment = memReqs.alignment;
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usageFlags = usageFlags;
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memoryPropertyFlags = memoryPropertyFlags;
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descriptor.offset = 0;
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descriptor.buffer = buffer;
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descriptor.range = sizeof(T)*count;
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VulkanDevice::CheckVkResult(vkBindBufferMemory(VulkanDevice::device, buffer, memory, 0));
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if(memoryPropertyFlags & VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT) {
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VulkanDevice::CheckVkResult(vkMapMemory(VulkanDevice::device, memory, 0, sizeof(T)*count, 0, reinterpret_cast<void**>(&value)));
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}
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VkBufferDeviceAddressInfo addressInfo = {
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.sType = VK_STRUCTURE_TYPE_BUFFER_DEVICE_ADDRESS_INFO,
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.buffer = buffer
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};
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address = vkGetBufferDeviceAddress(VulkanDevice::device, &addressInfo);
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}
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~VulkanBuffer() {
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if(value != nullptr) {
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if(memoryPropertyFlags & VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT) {
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vkUnmapMemory(VulkanDevice::device, memory);
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}
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vkDestroyBuffer(VulkanDevice::device, buffer, nullptr);
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vkFreeMemory(VulkanDevice::device, memory, nullptr);
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}
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}
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};
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}
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#endif |