public static BufferWithMemory CreateBuffer(VkContext vulkan, Vk.DeviceSize size,
Vk.BufferUsageFlags usage, Vk.MemoryPropertyFlags memoryProps,
Vk.SharingMode sharingMode)
{
var bufferInfo = new Vk.BufferCreateInfo();
bufferInfo.Size = size;
bufferInfo.Usage = usage;
bufferInfo.SharingMode = sharingMode;
var container = new BufferWithMemory();
container.Buffer = vulkan.Device.CreateBuffer(bufferInfo);
var memoryReqs = vulkan.Device.GetBufferMemoryRequirements(container.Buffer);
var allocInfo = new Vk.MemoryAllocateInfo();
allocInfo.AllocationSize = memoryReqs.Size;
allocInfo.MemoryTypeIndex = FindMemoryType(memoryReqs.MemoryTypeBits,
vulkan.PhysicalDevice, memoryProps);
container.Memory = vulkan.Device.AllocateMemory(allocInfo);
container.Bind(vulkan.Device, 0);
return(container);
}
public static uint FindMemoryType(uint typeFilter, Vk.PhysicalDevice physicalDevice,
Vk.MemoryPropertyFlags properties)
{
var memProps = physicalDevice.GetMemoryProperties();
for (int i = 0; i < memProps.MemoryTypeCount; i++)
{
bool bitFieldSet = (typeFilter & (1 << i)) != 0;
bool hasProperties = (memProps.MemoryTypes[i].PropertyFlags & properties) == properties;
if (bitFieldSet && hasProperties)
{
return((uint)i);
}
}
throw new System.Exception("Failed to find suitable memory type!");
}
public static ImageWithMemory CreateImage(VkContext state, uint width, uint height,
Vk.Format format, Vk.ImageTiling tiling, Vk.ImageUsageFlags usageFlags,
Vk.MemoryPropertyFlags props)
{
var extent = new Vk.Extent3D();
extent.Width = width;
extent.Height = height;
extent.Depth = 1;
var imageInfo = new Vk.ImageCreateInfo();
imageInfo.ImageType = Vk.ImageType.Image2D;
imageInfo.Extent = extent;
imageInfo.MipLevels = 1;
imageInfo.ArrayLayers = 1;
imageInfo.Format = format;
imageInfo.Tiling = tiling;
imageInfo.InitialLayout = Vk.ImageLayout.Undefined;
imageInfo.Usage = usageFlags;
imageInfo.Samples = Vk.SampleCountFlags.Count1;
imageInfo.SharingMode = Vk.SharingMode.Exclusive;
var image = new ImageWithMemory();
image.Image = state.Device.CreateImage(imageInfo);
var memoryReqs = state.Device.GetImageMemoryRequirements(image.Image);
var allocInfo = new Vk.MemoryAllocateInfo();
allocInfo.AllocationSize = memoryReqs.Size;
allocInfo.MemoryTypeIndex = FindMemoryType(memoryReqs.MemoryTypeBits,
state.PhysicalDevice, props);
image.Memory = state.Device.AllocateMemory(allocInfo);
image.Bind(state.Device, 0);
return(image);
}