internal IndexBufferView(TypelessBuffer buffer, ulong offset, IndexFormat format)
{
this.typelessBuffer = buffer;
this.offset = offset;
this.format = format;
buffer.AddRef();
}
/// <summary>
/// Creates dynamic buffers that are are update (usually each frame).
/// </summary>
/// <param name="device"></param>
/// <param name="vertexFormat"></param>
/// <param name="indexFormat"></param>
/// <param name="maxVertices"></param>
/// <param name="maxIndices"></param>
/// <returns></returns>
public static GeometryBatch CreateBatch(VertexFormat vertexFormat, IndexFormat indexFormat,
ulong maxVertices, ulong maxIndices, uint maxCyclicBuffers)
{
if (maxCyclicBuffers == 0)
{
maxCyclicBuffers = 1;
}
VertexBufferView[] vbufferView = new VertexBufferView[maxCyclicBuffers];
IndexBufferView[] ibufferView = new IndexBufferView[maxCyclicBuffers];
for (uint i = 0; i < maxCyclicBuffers; i++)
{
// We create vertex buffer.
TypelessBuffer vbuffer = new TypelessBuffer(Usage.Dynamic, BufferUsage.VertexBuffer, CPUAccess.Write,
GraphicsLocality.DeviceOrSystemMemory, vertexFormat.ByteSize * maxVertices);
vbuffer.DisposeOnViewDispose = true;
// We create view.
vbufferView[i] = vbuffer.CreateVertexBuffer(vertexFormat);
// We may also create index buffer.
if (maxIndices > 0)
{
TypelessBuffer ibuffer = new TypelessBuffer(Usage.Dynamic, BufferUsage.IndexBuffer, CPUAccess.Write,
GraphicsLocality.DeviceOrSystemMemory, indexFormat.ByteSize * maxIndices);
ibuffer.DisposeOnViewDispose = true;
// We create view.
ibufferView[i] = ibuffer.CreateIndexBuffer(indexFormat);
}
}
// We create geometry.
GeometryBatch geometry = new GeometryBatch(vbufferView, ibufferView);
return(geometry);
}
/// <summary>
/// Creates an index buffer.
/// </summary>
/// <param name="format">The format.</param>
/// <param name="offset">The offset.</param>
public IndexBufferView CreateIndexBuffer([NotNull] IndexFormat format, ulong offset)
{
return(new IndexBufferView(this, offset, format));
}
/// <summary>
/// Creates an index buffer.
/// </summary>
/// <param name="format">The format.</param>
public IndexBufferView CreateIndexBuffer([NotNull] IndexFormat format)
{
return(CreateIndexBuffer(format, 0));
}