public unsafe static Texture Create2D(uint w, uint h, VkFormat format, IntPtr tex2DDataPtr, bool dynamic = false)
{
var texture = new Texture
{
extent = new VkExtent3D(w, h, 1),
mipLevels = 1,
format = format
};
texture.image = Image.Create(w, h, VkImageCreateFlags.None, 1, 1, format, VkSampleCountFlags.Count1, VkImageUsageFlags.TransferDst | VkImageUsageFlags.Sampled);
ulong totalBytes = texture.image.AllocationSize;
using (Buffer stagingBuffer = Buffer.CreateStagingBuffer(totalBytes, tex2DDataPtr))
{
VkBufferImageCopy bufferCopyRegion = new VkBufferImageCopy
{
imageSubresource = new VkImageSubresourceLayers
{
aspectMask = VkImageAspectFlags.Color,
mipLevel = 0,
baseArrayLayer = 0,
layerCount = 1,
},
imageExtent = new VkExtent3D(w, h, 1),
bufferOffset = 0
};
// The sub resource range describes the regions of the image we will be transition
var subresourceRange = new VkImageSubresourceRange(VkImageAspectFlags.Color, 0, 1, 0, 1);
CommandBuffer copyCmd = Graphics.BeginPrimaryCmd();
copyCmd.SetImageLayout(texture.image, VkImageAspectFlags.Color, VkImageLayout.Undefined, VkImageLayout.TransferDstOptimal, subresourceRange);
copyCmd.CopyBufferToImage(stagingBuffer, texture.image, VkImageLayout.TransferDstOptimal, ref bufferCopyRegion);
copyCmd.SetImageLayout(texture.image, VkImageAspectFlags.Color, VkImageLayout.TransferDstOptimal, texture.imageLayout, subresourceRange);
Graphics.EndPrimaryCmd(copyCmd);
// Change texture image layout to shader read after all mip levels have been copied
texture.imageLayout = VkImageLayout.ShaderReadOnlyOptimal;
}
texture.imageView = ImageView.Create(texture.image, VkImageViewType.Image2D, format, VkImageAspectFlags.Color, 0, texture.mipLevels);
texture.sampler = new Sampler(VkFilter.Linear, VkSamplerMipmapMode.Linear, VkSamplerAddressMode.Repeat, texture.mipLevels, Device.Features.samplerAnisotropy == true);
texture.UpdateDescriptor();
return(texture);
}
public unsafe void SetImageData(MipmapLevel[] imageData)
{
this.imageData = imageData;
this.extent = new VkExtent3D(imageData[0].Width, imageData[0].Height, 1);
mipLevels = (uint)imageData.Length;
layers = (uint)imageData[0].ArrayElements.Length;
faceCount = (uint)imageData[0].ArrayElements[0].Faces.Length;
ulong totalSize = 0;
foreach (var mip in imageData)
{
totalSize += mip.TotalSize * layers * faceCount;
}
Buffer stagingBuffer = Buffer.CreateStagingBuffer(totalSize, IntPtr.Zero);
image = Image.Create(width, height, imageCreateFlags, layers * faceCount, mipLevels, format, VkSampleCountFlags.Count1, VkImageUsageFlags.TransferDst | VkImageUsageFlags.Sampled);
IntPtr mapped = stagingBuffer.Map();
// Setup buffer copy regions for each face including all of it's miplevels
Span <VkBufferImageCopy> bufferCopyRegions = stackalloc VkBufferImageCopy[(int)(mipLevels * layers * faceCount)];
uint offset = 0;
int index = 0;
for (int layer = 0; layer < layers; layer++)
{
for (int face = 0; face < faceCount; face++)
{
for (uint level = 0; level < mipLevels; level++)
{
var mipLevel = imageData[level];
var layerElement = mipLevel.ArrayElements[layer];
var faceElement = layerElement.Faces[face];
Unsafe.CopyBlock((void *)(mapped + (int)offset), Unsafe.AsPointer(ref faceElement.Data[0]), (uint)faceElement.Data.Length);
VkBufferImageCopy bufferCopyRegion = new VkBufferImageCopy
{
imageSubresource = new VkImageSubresourceLayers
{
aspectMask = VkImageAspectFlags.Color,
mipLevel = level,
baseArrayLayer = (uint)(layer * faceCount + face),
layerCount = 1
},
imageExtent = new VkExtent3D(mipLevel.Width, mipLevel.Height, mipLevel.Depth),
bufferOffset = offset
};
bufferCopyRegions[index++] = bufferCopyRegion;
offset += (uint)faceElement.Data.Length;
}
}
}
stagingBuffer.Unmap();
var subresourceRange = new VkImageSubresourceRange(VkImageAspectFlags.Color, 0, mipLevels, 0, layers * faceCount);
CommandBuffer copyCmd = Graphics.BeginPrimaryCmd();
copyCmd.SetImageLayout(image, VkImageAspectFlags.Color, VkImageLayout.Undefined, VkImageLayout.TransferDstOptimal, subresourceRange);
copyCmd.CopyBufferToImage(stagingBuffer, image, VkImageLayout.TransferDstOptimal, bufferCopyRegions);
copyCmd.SetImageLayout(image, VkImageAspectFlags.Color, VkImageLayout.TransferDstOptimal, imageLayout, subresourceRange);
Graphics.EndPrimaryCmd(copyCmd);
imageLayout = VkImageLayout.ShaderReadOnlyOptimal;
stagingBuffer.Dispose();
imageView = ImageView.Create(image, ImageViewType, format, VkImageAspectFlags.Color, 0, mipLevels, 0, layers);
sampler = new Sampler(VkFilter.Linear, VkSamplerMipmapMode.Linear, samplerAddressMode, mipLevels, Device.Features.samplerAnisotropy == true, borderColor);
UpdateDescriptor();
}
