public static Image Load(Queue staggingQ, CommandPool staggingCmdPool, string ktxPath, VkImageUsageFlags usage = VkImageUsageFlags.Sampled,
VkMemoryPropertyFlags memoryProperty = VkMemoryPropertyFlags.DeviceLocal, bool generateMipmaps = true,
VkImageTiling tiling = VkImageTiling.Optimal)
{
Image img = null;
using (Stream ktxStream = File.Open(ktxPath, FileMode.Open, FileAccess.Read)) {
using (BinaryReader br = new BinaryReader(ktxStream)) {
if (!br.ReadBytes(12).AreEquals(ktxSignature))
{
throw new KtxException("Not a ktx file: " + ktxPath);
}
UInt32 endianness = br.ReadUInt32();
UInt32 glType = br.ReadUInt32();
UInt32 glTypeSize = br.ReadUInt32();
UInt32 glFormat = br.ReadUInt32();
UInt32 glInternalFormat = br.ReadUInt32();
UInt32 glBaseInternalFormat = br.ReadUInt32();
UInt32 pixelWidth = br.ReadUInt32();
UInt32 pixelHeight = br.ReadUInt32();
UInt32 pixelDepth = Math.Min(1, br.ReadUInt32());
UInt32 numberOfArrayElements = br.ReadUInt32(); //only for array text, else 0
UInt32 numberOfFaces = br.ReadUInt32(); //only for cube map, else
UInt32 numberOfMipmapLevels = Math.Min(1, br.ReadUInt32());
UInt32 bytesOfKeyValueData = br.ReadUInt32();
VkFormat vkFormat = GLHelper.vkGetFormatFromOpenGLInternalFormat(glInternalFormat);
if (vkFormat == VkFormat.Undefined)
{
vkFormat = GLHelper.vkGetFormatFromOpenGLFormat(glFormat, glType);
if (vkFormat == VkFormat.Undefined)
{
throw new KtxException("Undefined format: " + ktxPath);
}
}
VkFormatFeatureFlags phyFormatSupport = (tiling == VkImageTiling.Linear) ?
staggingQ.Dev.phy.GetFormatProperties(vkFormat).linearTilingFeatures :
staggingQ.Dev.phy.GetFormatProperties(vkFormat).optimalTilingFeatures;
uint requestedMipsLevels = numberOfMipmapLevels;
if (numberOfMipmapLevels == 1)
{
requestedMipsLevels = (generateMipmaps && phyFormatSupport.HasFlag(VkFormatFeatureFlags.BlitSrc | VkFormatFeatureFlags.BlitDst)) ?
(uint)Math.Floor(Math.Log(Math.Max(pixelWidth, pixelHeight))) + 1 : 1;
}
if (tiling == VkImageTiling.Optimal)
{
usage |= VkImageUsageFlags.TransferDst;
}
if (generateMipmaps)
{
usage |= (VkImageUsageFlags.TransferSrc | VkImageUsageFlags.TransferDst);
}
VkImageCreateFlags createFlags = 0;
VkImageType imgType =
(pixelWidth == 0) ? throw new KtxException("pixelWidth must be > 0") :
(pixelHeight == 0) ? imgType = VkImageType.Image1D :
(pixelDepth == 0) ? imgType = VkImageType.Image2D : imgType = VkImageType.Image3D;
VkSampleCountFlags samples = VkSampleCountFlags.SampleCount1;
if (numberOfFaces > 1)
{
if (imgType != VkImageType.Image2D)
{
throw new KtxException("cubemap faces must be 2D textures");
}
createFlags = VkImageCreateFlags.CubeCompatible;
samples = VkSampleCountFlags.SampleCount1;
numberOfArrayElements = numberOfFaces;
}
else
{
numberOfFaces = 1;
if (numberOfArrayElements == 0)
{
numberOfArrayElements = 1;
}
}
if (imgType != VkImageType.Image3D)
{
pixelDepth = 1;
}
img = new Image(staggingQ.Dev, vkFormat, usage, memoryProperty, pixelWidth, pixelHeight, imgType, samples,
tiling, requestedMipsLevels, numberOfArrayElements, pixelDepth, createFlags);
byte[] keyValueDatas = br.ReadBytes((int)bytesOfKeyValueData);
if (memoryProperty.HasFlag(VkMemoryPropertyFlags.DeviceLocal))
{
ulong staggingSize = img.AllocatedDeviceMemorySize;
using (HostBuffer stagging = new HostBuffer(staggingQ.Dev, VkBufferUsageFlags.TransferSrc, staggingSize)) {
stagging.Map();
CommandBuffer cmd = staggingCmdPool.AllocateCommandBuffer();
cmd.Start(VkCommandBufferUsageFlags.OneTimeSubmit);
img.SetLayout(cmd, VkImageAspectFlags.Color,
VkImageLayout.Undefined, VkImageLayout.TransferDstOptimal,
VkPipelineStageFlags.AllCommands, VkPipelineStageFlags.Transfer);
List <VkBufferImageCopy> buffCopies = new List <VkBufferImageCopy> ();
VkBufferImageCopy bufferCopyRegion = new VkBufferImageCopy {
imageExtent = img.CreateInfo.extent,
imageSubresource = new VkImageSubresourceLayers(VkImageAspectFlags.Color, img.CreateInfo.arrayLayers, 0)
};
ulong bufferOffset = 0;
uint imgWidth = img.CreateInfo.extent.height;
uint imgHeight = img.CreateInfo.extent.width;
for (int mips = 0; mips < numberOfMipmapLevels; mips++)
{
UInt32 imgSize = br.ReadUInt32();
bufferCopyRegion.bufferImageHeight = imgWidth;
bufferCopyRegion.bufferRowLength = imgHeight;
bufferCopyRegion.bufferOffset = bufferOffset;
if (createFlags.HasFlag(VkImageCreateFlags.CubeCompatible))
{
IntPtr ptrFace = img.MappedData;
bufferCopyRegion.imageSubresource.layerCount = 1;
for (uint face = 0; face < numberOfFaces; face++)
{
bufferCopyRegion.imageSubresource.baseArrayLayer = face;
Marshal.Copy(br.ReadBytes((int)imgSize), 0, stagging.MappedData + (int)bufferOffset, (int)imgSize);
buffCopies.Add(bufferCopyRegion);
uint faceOffset = imgSize + (imgSize % 4);
ptrFace += (int)faceOffset; //cube padding
bufferOffset += faceOffset;
bufferCopyRegion.bufferOffset = bufferOffset;
}
}
else
{
Marshal.Copy(br.ReadBytes((int)imgSize), 0, stagging.MappedData, (int)imgSize);
buffCopies.Add(bufferCopyRegion);
}
bufferOffset += imgSize;
imgWidth /= 2;
imgHeight /= 2;
}
stagging.Unmap();
Vk.vkCmdCopyBufferToImage(cmd.Handle, stagging.handle, img.handle, VkImageLayout.TransferDstOptimal,
(uint)buffCopies.Count, buffCopies.Pin());
buffCopies.Unpin();
if (requestedMipsLevels > numberOfMipmapLevels)
{
img.BuildMipmaps(cmd);
}
else
{
img.SetLayout(cmd, VkImageAspectFlags.Color,
VkImageLayout.TransferDstOptimal, VkImageLayout.ShaderReadOnlyOptimal,
VkPipelineStageFlags.Transfer, VkPipelineStageFlags.AllGraphics);
}
cmd.End();
staggingQ.Submit(cmd);
staggingQ.WaitIdle();
cmd.Free();
}
//for (int mips = 0; mips < numberOfMipmapLevels; mips++) {
//UInt32 imgSize = br.ReadUInt32 ();
/*VkImageBlit imageBlit = new VkImageBlit {
* srcSubresource = new VkImageSubresourceLayers(VkImageAspectFlags.Color, numberOfArrayElements, (uint)mips - 1),
* srcOffsets_1 = new VkOffset3D((int)pixelWidth >> (mips - 1), (int)pixelHeight >> (mips - 1),1),
* dstSubresource = new VkImageSubresourceLayers (VkImageAspectFlags.Color, numberOfArrayElements, (uint)mips),
* dstOffsets_1 = new VkOffset3D ((int)pixelWidth >> mips, (int)pixelHeight >> mips, 1),
* };*/
//for (int layer = 0; layer < numberOfArrayElements; layer++) {
//for (int face = 0; face < numberOfFaces; face++) {
//for (int slice = 0; slice < pixelDepth; slice++) {
/*for (int y = 0; y < pixelHeight; y++) {
* for (int x = 0; x < pixelWidth; x++) {
* //Uncompressed texture data matches a GL_UNPACK_ALIGNMENT of 4.
* }
* }*/
//}
//Byte cubePadding[0-3]
//}
//}
//Byte mipPadding[0-3]
//}
}
}
}
return(img);
}
//TODO: some buffer data are reused between primitives, and I duplicate the datas
//buffers must be constructed without duplications
public Mesh[] LoadMeshes<TVertex> (VkIndexType indexType, Buffer vbo, ulong vboOffset, Buffer ibo, ulong iboOffset) {
ulong vCount, iCount;
VkIndexType idxType;
GetVertexCount (out vCount, out iCount, out idxType);
int vertexByteSize = Marshal.SizeOf<TVertex> ();
ulong vertSize = vCount * (ulong)vertexByteSize;
ulong idxSize = iCount * (indexType == VkIndexType.Uint16 ? 2ul : 4ul);
ulong size = vertSize + idxSize;
int vertexCount = 0, indexCount = 0;
int autoNamedMesh = 1;
meshes = new List<Mesh> ();
using (HostBuffer stagging = new HostBuffer (dev, VkBufferUsageFlags.TransferSrc, size)) {
stagging.Map ();
unsafe {
Span<byte> stagVertPtrInit = new Span<byte>(stagging.MappedData.ToPointer (), (int)vertSize);
Span<byte> stagIdxPtrInit = new Span<byte>((byte*)stagging.MappedData.ToPointer() + vertSize, (int)idxSize);
Span<byte> stagVertPtr = stagVertPtrInit, stagIdxPtr = stagIdxPtrInit;
foreach (GL.Mesh mesh in gltf.Meshes) {
string meshName = mesh.Name;
if (string.IsNullOrEmpty (meshName)) {
meshName = "mesh_" + autoNamedMesh.ToString ();
autoNamedMesh++;
}
Mesh m = new Mesh { Name = meshName };
foreach (GL.MeshPrimitive p in mesh.Primitives) {
GL.Accessor AccPos = null, AccNorm = null, AccUv = null, AccUv1 = null;
int accessorIdx;
if (p.Attributes.TryGetValue ("POSITION", out accessorIdx)) {
AccPos = gltf.Accessors[accessorIdx];
ensureBufferIsLoaded (gltf.BufferViews[(int)AccPos.BufferView].Buffer);
}
if (p.Attributes.TryGetValue ("NORMAL", out accessorIdx)) {
AccNorm = gltf.Accessors[accessorIdx];
ensureBufferIsLoaded (gltf.BufferViews[(int)AccNorm.BufferView].Buffer);
}
if (p.Attributes.TryGetValue ("TEXCOORD_0", out accessorIdx)) {
AccUv = gltf.Accessors[accessorIdx];
ensureBufferIsLoaded (gltf.BufferViews[(int)AccUv.BufferView].Buffer);
}
if (p.Attributes.TryGetValue ("TEXCOORD_1", out accessorIdx)) {
AccUv1 = gltf.Accessors[accessorIdx];
ensureBufferIsLoaded (gltf.BufferViews[(int)AccUv1.BufferView].Buffer);
}
Primitive prim = new Primitive {
indexBase = (uint)indexCount,
vertexBase = vertexCount,
vertexCount = (uint)AccPos.Count,
material = (uint)(p.Material ?? 0)
};
prim.bb.min.ImportFloatArray (AccPos.Min);
prim.bb.max.ImportFloatArray (AccPos.Max);
prim.bb.isValid = true;
//Interleaving vertices
Span<byte> inPosPtr = Span<byte>.Empty, inNormPtr = Span<byte>.Empty, inUvPtr = Span<byte>.Empty, inUv1Ptr = Span<byte>.Empty;
GL.BufferView bv = gltf.BufferViews[(int)AccPos.BufferView];
inPosPtr = loadedBuffers[bv.Buffer].Span.Slice (AccPos.ByteOffset + bv.ByteOffset);
if (AccNorm != null) {
bv = gltf.BufferViews[(int)AccNorm.BufferView];
inNormPtr = loadedBuffers[bv.Buffer].Span.Slice (AccNorm.ByteOffset + bv.ByteOffset);
}
if (AccUv != null) {
bv = gltf.BufferViews[(int)AccUv.BufferView];
inUvPtr = loadedBuffers[bv.Buffer].Span.Slice (AccUv.ByteOffset + bv.ByteOffset);
}
if (AccUv1 != null) {
bv = gltf.BufferViews[(int)AccUv1.BufferView];
inUv1Ptr = loadedBuffers[bv.Buffer].Span.Slice (AccUv1.ByteOffset + bv.ByteOffset);
}
//TODO: use vertex attributes scan for copying data if they exists
for (int j = 0; j < prim.vertexCount; j++) {
inPosPtr.Slice (0, 12).CopyTo (stagVertPtr);
inPosPtr = inPosPtr.Slice(12);
if (!inNormPtr.IsEmpty) {
inNormPtr.Slice (0, 12).CopyTo (stagVertPtr.Slice (12));
inNormPtr = inNormPtr.Slice (12);
}
if (inUvPtr != null) {
inUvPtr.Slice (0, 8).CopyTo (stagVertPtr.Slice (24));
inUvPtr = inUvPtr.Slice (8);
}
if (inUv1Ptr != null) {
inUv1Ptr.Slice (0, 8).CopyTo (stagVertPtr.Slice (32));
inUv1Ptr = inUvPtr.Slice (8);
}
stagVertPtr = stagVertPtr.Slice (vertexByteSize);
}
/*Span<byte> s = stagVertPtrInit;
for (int i = 0; i < s.Length; i++)
Console.Write (s[i].ToString ("X2") + (i % 32 == 0 ? "\n" : " "));*/
//indices loading
if (p.Indices != null) {
GL.Accessor acc = gltf.Accessors[(int)p.Indices];
bv = gltf.BufferViews[(int)acc.BufferView];
Span<byte> inIdxPtr = loadedBuffers[bv.Buffer].Span.Slice (acc.ByteOffset + bv.ByteOffset);
//TODO:double check this, I dont seems to increment stag pointer
if (acc.ComponentType == GL.Accessor.ComponentTypeEnum.UNSIGNED_SHORT) {
if (indexType == VkIndexType.Uint16) {
inIdxPtr.Slice (0, acc.Count * 2).CopyTo (stagIdxPtr);
stagIdxPtr = stagIdxPtr.Slice (acc.Count * 2);
} else {
Span<uint> usPtr = MemoryMarshal.Cast<byte, uint> (stagIdxPtr);
Span<ushort> inPtr = MemoryMarshal.Cast < byte, ushort> (inIdxPtr);
for (int i = 0; i < acc.Count; i++)
usPtr[i] = inPtr[i];
stagIdxPtr = stagIdxPtr.Slice (acc.Count * 4);
}
} else if (acc.ComponentType == GL.Accessor.ComponentTypeEnum.UNSIGNED_INT) {
if (indexType == VkIndexType.Uint32) {
inIdxPtr.Slice (0, acc.Count * 4).CopyTo (stagIdxPtr);
stagIdxPtr = stagIdxPtr.Slice (acc.Count * 4);
} else {
Span<ushort> usPtr = MemoryMarshal.Cast<byte, ushort> (stagIdxPtr);
Span<uint> inPtr = MemoryMarshal.Cast<byte, uint> (inIdxPtr);
for (int i = 0; i < acc.Count; i++)
usPtr[i] = (ushort)inPtr[i];
stagIdxPtr = stagIdxPtr.Slice (acc.Count * 2);
}
} else if (acc.ComponentType == GL.Accessor.ComponentTypeEnum.UNSIGNED_BYTE) {
//convert
if (indexType == VkIndexType.Uint16) {
Span<ushort> usPtr = MemoryMarshal.Cast<byte, ushort> (stagIdxPtr);
for (int i = 0; i < acc.Count; i++)
usPtr[i] = (ushort)inIdxPtr[i];
stagIdxPtr = stagIdxPtr.Slice (acc.Count * 2);
} else {
Span<uint> usPtr = MemoryMarshal.Cast<byte, uint> (stagIdxPtr);
for (int i = 0; i < acc.Count; i++)
usPtr[i] = (uint)inIdxPtr[i];
stagIdxPtr = stagIdxPtr.Slice (acc.Count * 4);
}
} else
throw new NotImplementedException ();
prim.indexCount = (uint)acc.Count;
indexCount += acc.Count;
}
m.AddPrimitive (prim);
vertexCount += AccPos.Count;
}
meshes.Add (m);
}
/*ReadOnlySpan<byte> tmp = new ReadOnlySpan<byte> (stagging.MappedData.ToPointer (), (int)size);
Memory<byte> mtmp = new Memory<byte> (tmp.ToArray());
mtmp.Dump();*/
}
stagging.Unmap ();
PrimaryCommandBuffer cmd = cmdPool.AllocateCommandBuffer ();
cmd.Start (VkCommandBufferUsageFlags.OneTimeSubmit);
stagging.CopyTo (cmd, vbo, vertSize, 0, vboOffset);
if (iCount>0)
stagging.CopyTo (cmd, ibo, idxSize, vertSize, iboOffset);
cmd.End ();
transferQ.Submit (cmd);
dev.WaitIdle ();
cmd.Free ();
}
return meshes.ToArray ();
}
public static Image Load(Queue staggingQ, CommandPool staggingCmdPool, string ktxPath, VkImageUsageFlags usage = VkImageUsageFlags.Sampled,
VkMemoryPropertyFlags memoryProperty = VkMemoryPropertyFlags.DeviceLocal, bool generateMipmaps = true,
VkImageTiling tiling = VkImageTiling.Optimal)
{
Image img = null;
using (Stream ktxStream = File.Open(ktxPath, FileMode.Open, FileAccess.Read)) {
using (BinaryReader br = new BinaryReader(ktxStream)) {
if (!br.ReadBytes(12).AreEquals(ktxSignature))
{
throw new KtxException("Not a ktx file: " + ktxPath);
}
UInt32 endianness = br.ReadUInt32();
UInt32 glType = br.ReadUInt32();
UInt32 glTypeSize = br.ReadUInt32();
UInt32 glFormat = br.ReadUInt32();
UInt32 glInternalFormat = br.ReadUInt32();
UInt32 glBaseInternalFormat = br.ReadUInt32();
UInt32 pixelWidth = br.ReadUInt32();
UInt32 pixelHeight = br.ReadUInt32();
UInt32 pixelDepth = Math.Max(1, br.ReadUInt32());
UInt32 numberOfArrayElements = br.ReadUInt32(); //only for array text, else 0
UInt32 numberOfFaces = br.ReadUInt32(); //only for cube map, else 1
UInt32 numberOfMipmapLevels = Math.Max(1, br.ReadUInt32());
UInt32 bytesOfKeyValueData = br.ReadUInt32();
VkFormat vkFormat = GLHelper.vkGetFormatFromOpenGLInternalFormat(glInternalFormat);
if (vkFormat == VkFormat.Undefined)
{
vkFormat = GLHelper.vkGetFormatFromOpenGLFormat(glFormat, glType);
if (vkFormat == VkFormat.Undefined)
{
throw new KtxException("Undefined format: " + ktxPath);
}
}
VkFormatProperties formatProperties = staggingQ.Dev.phy.GetFormatProperties(vkFormat);
VkFormatFeatureFlags phyFormatSupport = (tiling == VkImageTiling.Linear) ?
formatProperties.linearTilingFeatures :
formatProperties.optimalTilingFeatures;
uint requestedMipsLevels = numberOfMipmapLevels;
if (numberOfMipmapLevels == 1)
{
requestedMipsLevels = (generateMipmaps && phyFormatSupport.HasFlag(VkFormatFeatureFlags.BlitSrc | VkFormatFeatureFlags.BlitDst)) ?
(uint)Math.Floor(Math.Log(Math.Max(pixelWidth, pixelHeight))) + 1 : 1;
}
if (tiling == VkImageTiling.Optimal)
{
usage |= VkImageUsageFlags.TransferDst;
}
if (generateMipmaps)
{
usage |= (VkImageUsageFlags.TransferSrc | VkImageUsageFlags.TransferDst);
}
VkImageCreateFlags createFlags = 0;
VkImageType imgType =
(pixelWidth == 0) ? throw new KtxException("pixelWidth must be > 0") :
(pixelHeight == 0) ? imgType = VkImageType.Image1D :
(pixelDepth == 1) ? imgType = VkImageType.Image2D : imgType = VkImageType.Image3D;
VkSampleCountFlags samples = VkSampleCountFlags.SampleCount1;
if (numberOfFaces > 1)
{
if (imgType != VkImageType.Image2D)
{
throw new KtxException("cubemap faces must be 2D textures");
}
createFlags = VkImageCreateFlags.CubeCompatible;
samples = VkSampleCountFlags.SampleCount1;
numberOfArrayElements = numberOfFaces;
}
else
{
numberOfFaces = 1;
if (numberOfArrayElements == 0)
{
numberOfArrayElements = 1;
}
}
if (!Image.CheckFormatIsSupported(usage, phyFormatSupport))
{
throw new Exception($"Unsupported image format: {vkFormat}, {tiling}, {usage}");
}
img = new Image(staggingQ.Dev, vkFormat, usage, memoryProperty, pixelWidth, pixelHeight, imgType, samples,
tiling, requestedMipsLevels, numberOfArrayElements, pixelDepth, createFlags);
byte[] keyValueDatas = br.ReadBytes((int)bytesOfKeyValueData);
uint blockW, blockH;
bool isCompressed = vkFormat.TryGetCompressedFormatBlockSize(out blockW, out blockH);
uint blockSize = blockW * blockH;
if (memoryProperty.HasFlag(VkMemoryPropertyFlags.DeviceLocal))
{
ulong staggingSize = img.AllocatedDeviceMemorySize;
Console.WriteLine($"KtxStream size = {ktxStream.Length}, img Allocation = {img.AllocatedDeviceMemorySize}");
using (HostBuffer stagging = new HostBuffer(staggingQ.Dev, VkBufferUsageFlags.TransferSrc, staggingSize)) {
stagging.Map();
PrimaryCommandBuffer cmd = staggingCmdPool.AllocateAndStart(VkCommandBufferUsageFlags.OneTimeSubmit);
img.SetLayout(cmd, VkImageAspectFlags.Color,
VkImageLayout.Undefined, VkImageLayout.TransferDstOptimal,
VkPipelineStageFlags.AllCommands, VkPipelineStageFlags.Transfer);
List <VkBufferImageCopy> buffCopies = new List <VkBufferImageCopy> ();
VkBufferImageCopy bufferCopyRegion = new VkBufferImageCopy {
imageExtent = img.CreateInfo.extent,
imageSubresource = new VkImageSubresourceLayers(VkImageAspectFlags.Color, img.CreateInfo.arrayLayers, 0)
};
ulong bufferOffset = 0;
uint imgWidth = img.CreateInfo.extent.width;
uint imgHeight = img.CreateInfo.extent.height;
for (int mips = 0; mips < numberOfMipmapLevels; mips++)
{
UInt32 imgSize = br.ReadUInt32();
bufferCopyRegion.bufferRowLength = imgWidth;
bufferCopyRegion.bufferImageHeight = imgHeight;
if (isCompressed && (imgWidth % blockW > 0 || imgHeight % blockH > 0))
{
bufferCopyRegion.bufferRowLength += blockW - imgWidth % blockW;
bufferCopyRegion.bufferImageHeight += blockH - imgHeight % blockH;
}
bufferCopyRegion.bufferOffset = bufferOffset;
bufferCopyRegion.imageSubresource.mipLevel = (uint)mips;
bufferCopyRegion.imageExtent.width = imgWidth;
bufferCopyRegion.imageExtent.height = imgHeight;
if (createFlags.HasFlag(VkImageCreateFlags.CubeCompatible))
{
//TODO:handle compressed formats
for (uint face = 0; face < numberOfFaces; face++)
{
Marshal.Copy(br.ReadBytes((int)imgSize), 0, stagging.MappedData + (int)bufferOffset, (int)imgSize);
uint faceOffset = imgSize + (imgSize % 4); //cube padding
bufferOffset += faceOffset;
}
buffCopies.Add(bufferCopyRegion);
bufferCopyRegion.bufferOffset = bufferOffset;
}
else if (isCompressed && (imgWidth % blockW > 0 || imgHeight % blockH > 0))
{
for (int line = 0; line < imgHeight; line++)
{
Marshal.Copy(br.ReadBytes((int)imgWidth), 0, stagging.MappedData + (int)bufferOffset, (int)imgWidth);
bufferOffset += bufferCopyRegion.bufferRowLength;
}
buffCopies.Add(bufferCopyRegion);
}
else
{
Marshal.Copy(br.ReadBytes((int)imgSize), 0, stagging.MappedData + (int)bufferOffset, (int)imgSize);
buffCopies.Add(bufferCopyRegion);
bufferOffset += imgSize;
}
if (isCompressed && bufferOffset % blockSize > 0)
{
bufferOffset += blockSize - bufferOffset % blockSize;
}
imgWidth /= 2;
imgHeight /= 2;
}
stagging.Unmap();
Vk.vkCmdCopyBufferToImage(cmd.Handle, stagging.handle, img.handle, VkImageLayout.TransferDstOptimal,
(uint)buffCopies.Count, buffCopies.Pin());
buffCopies.Unpin();
if (requestedMipsLevels > numberOfMipmapLevels)
{
img.BuildMipmaps(cmd);
}
else
{
img.SetLayout(cmd, VkImageAspectFlags.Color,
VkImageLayout.TransferDstOptimal, VkImageLayout.ShaderReadOnlyOptimal,
VkPipelineStageFlags.Transfer, VkPipelineStageFlags.FragmentShader);
}
cmd.End();
staggingQ.Submit(cmd);
staggingQ.WaitIdle();
cmd.Free();
}
}
else
{
}
}
}
return(img);
}