public static Vk.Format FindSupportedFormat(VkContext state, IEnumerable <Vk.Format> candidates,
Vk.ImageTiling tiling, Vk.FormatFeatureFlags features)
{
foreach (Vk.Format format in candidates)
{
var props = state.PhysicalDevice.GetFormatProperties(format);
if (tiling == Vk.ImageTiling.Linear && (props.LinearTilingFeatures & features) != 0)
{
return(format);
}
else if (tiling == Vk.ImageTiling.Optimal && (props.OptimalTilingFeatures & features) != 0)
{
return(format);
}
}
throw new System.Exception("Failed to find a supported format.");
}
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);
}
