KSG-Framework/DXBuffer.cpp

#include "DXBuffer.h"
#include "DXCommandQueue.h"
#include <iostream>
#ifdef WIN32
#include <d3d11.h>
#include <d3d12.h>
#include <d3dx12.h>
#endif

using namespace Framework;

// Inhalt der DXBuffer Klasse

// Konstruktor
//  bind: Der verwendungszweck des Buffers. Beispiel: D3D11_BIND_INDEX_BUFFER, D3D11_BIND_VERTEX_BUFFER.
//  eLän: Länge eines einzelnen Elements in Bytes
DXBuffer::DXBuffer( int eLen )
{
    data = 0;
    changed = 0;
    len = 0;
    elLen = eLen;
    ref = 1;
}

// Destruktor
DXBuffer::~DXBuffer()
{}

// Setzt den geändert fläg, so das beim nächsten auruf von 'kopieren' die daten neu kopiert werden
void DXBuffer::setChanged()
{
    changed = 1;
}

// Ändert die länge des Buffers beim nächsten aufruf von 'kopieren'
//  län: Die Länge in Bytes
void DXBuffer::setLength( int len )
{
    this->len = len;
}

// Legt fest, was beim nächsten aufruf von 'kopieren' kopiert wird
//  data: Ein zeiger auf die Daten
void DXBuffer::setData( void *data )
{
    this->data = data;
    changed = 1;
}

// Gibt die Länge eines Elementes in bytes zurück
int DXBuffer::getElementLength() const
{
    return elLen;
}

// Gibt die Anzahl der Elemente im Buffer zurück
int DXBuffer::getElementAnzahl() const
{
    return len / elLen;
}

// Erhöht den Reference Counting Zähler.
//  return: this.
DXBuffer *DXBuffer::getThis()
{
    ref++;
    return this;
}

// Verringert den Reference Counting Zähler. Wenn der Zähler 0 erreicht, wird das Zeichnung automatisch gelöscht.
//  return: 0.
DXBuffer *DXBuffer::release()
{
    ref--;
    if( !ref )
        delete this;
    return 0;
}


#ifdef WIN32
// Inhalt der DX11Buffer Klasse

// Konstruktor
// eSize: Die Länge eines Elementes in Bytes
DX11Buffer::DX11Buffer( int eSize, ID3D11Device * device, ID3D11DeviceContext * context, int bindFlags )
    : DXBuffer( eSize )
{
    buffer = 0;
    description = new D3D11_BUFFER_DESC();
    memset( description, 0, sizeof( description ) );
    description->Usage = D3D11_USAGE_DYNAMIC;
    description->CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
    description->BindFlags = bindFlags;

    this->device = device;
    this->context = context;
}

// Destruktor
DX11Buffer::~DX11Buffer()
{
    if( buffer )
        buffer->Release();
    delete description;
}

// Kopiert die Daten in den Buffer, fals sie sich verändert haben
//  zRObj: Das Objekt, mit dem die Grafikkarte angesprochen wird
void DX11Buffer::copieren( int byteCount )
{
    if( !len )
        return;
    if( byteCount < 0 )
        byteCount = len;
    if( description->ByteWidth < (unsigned)len )
    {
        if( buffer )
            buffer->Release();
        buffer = 0;
    }
    if( !buffer )
    {
        description->ByteWidth = len;
        device->CreateBuffer( description, 0, &buffer );
        if( data )
            changed = 1;
    }
    if( changed )
    {
        D3D11_MAPPED_SUBRESOURCE map;
        if( ( description->Usage | D3D11_USAGE_DYNAMIC ) == description->Usage )
            context->Map( buffer, 0, D3D11_MAP::D3D11_MAP_WRITE_DISCARD, 0, &map );
        else
            context->Map( buffer, 0, D3D11_MAP::D3D11_MAP_WRITE, 0, &map );
        memcpy( map.pData, data, byteCount );
        context->Unmap( buffer, 0 );
        changed = 0;
    }
}

// Gibt den Buffer zurück
ID3D11Buffer * DX11Buffer::zBuffer() const
{
    return buffer;
}


// Inhalt der DXStructuredBuffer Klasse

// Konstruktor
// eSize: Die Länge eines Elementes in Bytes
DX11StructuredBuffer::DX11StructuredBuffer( int eSize, ID3D11Device * device, ID3D11DeviceContext * context )
    : DX11Buffer( eSize, device, context, D3D11_BIND_UNORDERED_ACCESS | D3D11_BIND_SHADER_RESOURCE )
{
    description->MiscFlags = D3D11_RESOURCE_MISC_BUFFER_STRUCTURED;
    description->StructureByteStride = eSize;
    description->Usage = D3D11_USAGE_DEFAULT;
    view = 0;
}

// Destruktor
DX11StructuredBuffer::~DX11StructuredBuffer()
{
    if( view )
        view->Release();
}

// Kopiert die Daten in den Buffer, fals sie sich verändert haben
//  zRObj: Das Objekt, mit dem die Grafikkarte angesprochen wird
void DX11StructuredBuffer::copieren( int byteCount )
{
    ID3D11Buffer *old = buffer;
    DX11Buffer::copieren( byteCount );
    if( buffer != old )
    {
        if( view )
            view->Release();
        D3D11_SHADER_RESOURCE_VIEW_DESC desc = {};
        desc.ViewDimension = D3D11_SRV_DIMENSION_BUFFEREX;
        desc.BufferEx.FirstElement = 0;
        desc.Format = DXGI_FORMAT_UNKNOWN;
        desc.BufferEx.NumElements = description->ByteWidth / description->StructureByteStride;
        device->CreateShaderResourceView( buffer, &desc, &view );
    }
}

// Gibt die verwendtete Shader Resource View zurück
DX11StructuredBuffer::operator ID3D11ShaderResourceView *( ) const
{
    return view;
}


// Konstruktor
// eSize: Die Länge eines Elementes in Bytes
DX12Buffer::DX12Buffer( int eSize, ID3D12Device2 * device, ID3D12GraphicsCommandList2 * list, int flags )
    : DXBuffer( eSize ),
    buffer( 0 ),
    intermediate( 0 ),
    device( device ),
    list( list )
{
    description = new D3D12_RESOURCE_DESC();
    ZeroMemory( description, sizeof( D3D12_RESOURCE_DESC ) );
    description->Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
    description->Height = 1;
    description->DepthOrArraySize = 1;
    description->MipLevels = 1;
    description->Format = DXGI_FORMAT_UNKNOWN;
    description->SampleDesc.Count = 1;
    description->Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
    description->Flags = (D3D12_RESOURCE_FLAGS)flags;
}

// Destruktor
DX12Buffer::~DX12Buffer()
{
    if( intermediate )
        intermediate->Release();
    if( buffer )
        buffer->Release();
    delete description;
}

// Kopiert die Daten in den Buffer, fals sie sich verändert haben
void DX12Buffer::copieren( int byteCount )
{
    if( !len )
        return;
    if( byteCount < 0 )
        byteCount = len;
    if( description->Width < len )
    {
        if( intermediate )
            intermediate->Release();
        if( buffer )
            buffer->Release();
        buffer = 0;
        description->Width = len;
    }
    if( !buffer )
    {
        D3D12_HEAP_PROPERTIES hprop;
        hprop.Type = D3D12_HEAP_TYPE_UPLOAD;
        hprop.CPUPageProperty = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
        hprop.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
        hprop.CreationNodeMask = 1;
        hprop.VisibleNodeMask = 1;
        device->CreateCommittedResource( &hprop, D3D12_HEAP_FLAG_NONE, description, D3D12_RESOURCE_STATE_GENERIC_READ, 0, __uuidof( ID3D12Resource ), (void **)& buffer );
        hprop.Type = D3D12_HEAP_TYPE_UPLOAD;
        device->CreateCommittedResource( &hprop, D3D12_HEAP_FLAG_NONE, description, D3D12_RESOURCE_STATE_GENERIC_READ, 0, __uuidof( ID3D12Resource ), (void **)& intermediate );
        if( data )
            changed = 1;
    }
    if( changed && data )
    {
        BYTE *pData;
        D3D12_RANGE r;
        r.Begin = 0;
        r.End = 0;
        buffer->Map( 0, &r, (void **)&pData );
        memcpy( pData, data, byteCount );
        r.End = byteCount;
        buffer->Unmap( 0, &r );
        //list->CopyBufferRegion( buffer, 0, intermediate, 0, len );
        changed = 0;
    }
}

// Gibt den Buffer zurück
ID3D12Resource *DX12Buffer::zBuffer() const
{
    return buffer;
}


DX12IndexBuffer::DX12IndexBuffer( int eSize, ID3D12Device2 *device, DX12CopyCommandQueue *copy, DX12DirectCommandQueue *direct )
    : DX12Buffer( eSize, device, copy->getCommandList(), D3D12_RESOURCE_FLAG_NONE ),
    copy( copy ),
    direct( direct )
{
    ibs = 0;
}

DX12IndexBuffer::~DX12IndexBuffer()
{}

// Kopiert die Daten in den Buffer, fals sie sich verändert haben
void DX12IndexBuffer::copieren( int byteCount )
{
    /*if( ibs )
    {
        D3D12_RESOURCE_BARRIER barrier;
        barrier.Type = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION;
        barrier.Transition.pResource = buffer;
        barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_INDEX_BUFFER;
        barrier.Transition.StateAfter = D3D12_RESOURCE_STATE_COPY_DEST;
        barrier.Transition.Subresource = 0;
        barrier.Flags = D3D12_RESOURCE_BARRIER_FLAG_NONE;
        direct->getCommandList()->ResourceBarrier( 1, &barrier );
        direct->execute();
        ibs = 0;
    }*/
    DX12Buffer::copieren( byteCount );
    //copy->execute();
    /*D3D12_RESOURCE_BARRIER barrier;
    barrier.Type = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION;
    barrier.Transition.pResource = buffer;
    barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_COPY_DEST;
    barrier.Transition.StateAfter = D3D12_RESOURCE_STATE_INDEX_BUFFER;
    barrier.Transition.Subresource = 0;
    barrier.Flags = D3D12_RESOURCE_BARRIER_FLAG_NONE;
    direct->getCommandList()->ResourceBarrier( 1, &barrier );
    direct->execute();
    ibs = 1;*/
}


DX12VertexBuffer::DX12VertexBuffer( int eSize, ID3D12Device2 *device, DX12CopyCommandQueue *copy, DX12DirectCommandQueue *direct )
    : DX12Buffer( eSize, device, copy->getCommandList(), D3D12_RESOURCE_FLAG_NONE ),
    copy( copy ),
    direct( direct )
{
    vbs = 0;
}

DX12VertexBuffer::~DX12VertexBuffer()
{}

// Kopiert die Daten in den Buffer, fals sie sich verändert haben
void DX12VertexBuffer::copieren( int byteCount )
{
    /*if( vbs )
    {
        D3D12_RESOURCE_BARRIER barrier;
        barrier.Type = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION;
        barrier.Transition.pResource = buffer;
        barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_VERTEX_AND_CONSTANT_BUFFER;
        barrier.Transition.StateAfter = D3D12_RESOURCE_STATE_COPY_DEST;
        barrier.Transition.Subresource = 0;
        barrier.Flags = D3D12_RESOURCE_BARRIER_FLAG_NONE;
        direct->getCommandList()->ResourceBarrier( 1, &barrier );
        direct->execute();
        vbs = 0;
    }*/
    DX12Buffer::copieren( byteCount );
    //copy->execute();
    /*D3D12_RESOURCE_BARRIER barrier;
    barrier.Type = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION;
    barrier.Transition.pResource = buffer;
    barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_COPY_DEST;
    barrier.Transition.StateAfter = D3D12_RESOURCE_STATE_VERTEX_AND_CONSTANT_BUFFER;
    barrier.Transition.Subresource = 0;
    barrier.Flags = D3D12_RESOURCE_BARRIER_FLAG_NONE;
    direct->getCommandList()->ResourceBarrier( 1, &barrier );
    direct->execute();
    vbs = 1;*/
}

#endif