void initGpuBuffers()
{
using (CommandPool staggingCmdPool = new CommandPool(dev, transferQ.qFamIndex)) {
CommandBuffer cmd = staggingCmdPool.AllocateAndStart(VkCommandBufferUsageFlags.OneTimeSubmit);
stagingDataBuff.CopyTo(cmd, inBuff);
transferQ.EndSubmitAndWait(cmd);
}
}
void initGpuBuffers()
{
using (CommandPool staggingCmdPool = new CommandPool(dev, transferQ.qFamIndex)) {
CommandBuffer cmd = staggingCmdPool.AllocateAndStart(VkCommandBufferUsageFlags.OneTimeSubmit);
if (clear)
{
if (pong)
{
inBuff.Fill(cmd, 0);
}
else
{
outBuff.Fill(cmd, 0);
}
}
staggingVBO.CopyTo(cmd, vbo, pointCount * (ulong)Marshal.SizeOf <Vector2>());
transferQ.EndSubmitAndWait(cmd);
}
}
//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 ();
}