protected override void Dispose(bool disposing)
{
if (disposing)
{
Vertices.Unmap();
Vertices.Dispose();
}
base.Dispose(disposing);
}
//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 {
byte *stagVertPtrInit = (byte *)stagging.MappedData.ToPointer();
byte *stagIdxPtrInit = (byte *)(stagging.MappedData.ToPointer()) + vertSize;
byte *stagVertPtr = stagVertPtrInit;
byte *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
byte *inPosPtr = null, inNormPtr = null, inUvPtr = null, inUv1Ptr = null;
GL.BufferView bv = gltf.BufferViews[(int)AccPos.BufferView];
inPosPtr = (byte *)bufferHandles[bv.Buffer].AddrOfPinnedObject().ToPointer();
inPosPtr += AccPos.ByteOffset + bv.ByteOffset;
if (AccNorm != null)
{
bv = gltf.BufferViews[(int)AccNorm.BufferView];
inNormPtr = (byte *)bufferHandles[bv.Buffer].AddrOfPinnedObject().ToPointer();
inNormPtr += AccNorm.ByteOffset + bv.ByteOffset;
}
if (AccUv != null)
{
bv = gltf.BufferViews[(int)AccUv.BufferView];
inUvPtr = (byte *)bufferHandles[bv.Buffer].AddrOfPinnedObject().ToPointer();
inUvPtr += AccUv.ByteOffset + bv.ByteOffset;
}
if (AccUv1 != null)
{
bv = gltf.BufferViews[(int)AccUv1.BufferView];
inUv1Ptr = (byte *)bufferHandles[bv.Buffer].AddrOfPinnedObject().ToPointer();
inUv1Ptr += AccUv1.ByteOffset + bv.ByteOffset;
}
for (int j = 0; j < prim.vertexCount; j++)
{
System.Buffer.MemoryCopy(inPosPtr, stagVertPtr, 12, 12);
inPosPtr += 12;
if (inNormPtr != null)
{
System.Buffer.MemoryCopy(inNormPtr, stagVertPtr + 12, 12, 12);
inNormPtr += 12;
}
if (inUvPtr != null)
{
System.Buffer.MemoryCopy(inUvPtr, stagVertPtr + 24, 8, 8);
inUvPtr += 8;
}
if (inUv1Ptr != null)
{
System.Buffer.MemoryCopy(inUv1Ptr, stagVertPtr + 32, 8, 8);
inUv1Ptr += 8;
}
stagVertPtr += vertexByteSize;
}
//indices loading
if (p.Indices != null)
{
GL.Accessor acc = gltf.Accessors[(int)p.Indices];
bv = gltf.BufferViews[(int)acc.BufferView];
byte *inIdxPtr = (byte *)bufferHandles[bv.Buffer].AddrOfPinnedObject().ToPointer();
inIdxPtr += 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)
{
System.Buffer.MemoryCopy(inIdxPtr, stagIdxPtr, (long)acc.Count * 2, (long)acc.Count * 2);
stagIdxPtr += (long)acc.Count * 2;
}
else
{
uint * usPtr = (uint *)stagIdxPtr;
ushort *inPtr = (ushort *)inIdxPtr;
for (int i = 0; i < acc.Count; i++)
{
usPtr[i] = inPtr[i];
}
stagIdxPtr += (long)acc.Count * 4;
}
}
else if (acc.ComponentType == GL.Accessor.ComponentTypeEnum.UNSIGNED_INT)
{
if (indexType == VkIndexType.Uint32)
{
System.Buffer.MemoryCopy(inIdxPtr, stagIdxPtr, (long)acc.Count * 4, (long)acc.Count * 4);
stagIdxPtr += (long)acc.Count * 4;
}
else
{
ushort *usPtr = (ushort *)stagIdxPtr;
uint * inPtr = (uint *)inIdxPtr;
for (int i = 0; i < acc.Count; i++)
{
usPtr[i] = (ushort)inPtr[i];
}
stagIdxPtr += (long)acc.Count * 2;
}
}
else if (acc.ComponentType == GL.Accessor.ComponentTypeEnum.UNSIGNED_BYTE)
{
//convert
if (indexType == VkIndexType.Uint16)
{
ushort *usPtr = (ushort *)stagIdxPtr;
for (int i = 0; i < acc.Count; i++)
{
usPtr[i] = (ushort)inIdxPtr[i];
}
stagIdxPtr += (long)acc.Count * 2;
}
else
{
uint *usPtr = (uint *)stagIdxPtr;
for (int i = 0; i < acc.Count; i++)
{
usPtr[i] = (uint)inIdxPtr[i];
}
stagIdxPtr += (long)acc.Count * 4;
}
}
else
{
throw new NotImplementedException();
}
prim.indexCount = (uint)acc.Count;
indexCount += acc.Count;
}
m.AddPrimitive(prim);
vertexCount += AccPos.Count;
}
meshes.Add(m);
}
}
stagging.Unmap();
CommandBuffer 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());
}