private static int convertUsage(VertexBufferUsage usage)
{
int glUsage = (int)BufferUsageHint.StaticDraw;
if (usage == VertexBufferUsage.Stream)
{
glUsage = (int)BufferUsageHint.StreamDraw;
}
else if (usage == VertexBufferUsage.Dynamic)
{
glUsage = (int)BufferUsageHint.DynamicDraw;
}
return(glUsage);
}
internal static GlVertexBuffer CreateBuffer <T>(VertexBufferUsage usage, T[] data, int numVertices, VertexElementSet vertexElements) where T : struct
{
GlVertexBuffer buffer = new GlVertexBuffer();
buffer._declaration = vertexElements;
buffer._numVertices = numVertices;
buffer._usage = usage;
GL.GenBuffers(1, out buffer._buffer);
GL.BindBuffer(BufferTarget.ArrayBuffer, buffer._buffer);
GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(numVertices * vertexElements.Stride), data, (BufferUsageHint)convertUsage(usage));
GL.BindBuffer(BufferTarget.ArrayBuffer, 0);
return(buffer);
}
internal static Direct3D9VertexBuffer CreateBuffer <T>(VertexBufferUsage usage, SharpDX.Direct3D9.Device device,
T[] data, int numVertices, VertexElementSet vertexElements) where T : struct
{
Direct3D9VertexBuffer buffer = new Direct3D9VertexBuffer();
buffer._declaration = vertexElements;
buffer._numVertices = numVertices;
buffer._buffer = new SharpDX.Direct3D9.VertexBuffer(device, numVertices * vertexElements.Stride, SharpDX.Direct3D9.Usage.WriteOnly, VertexFormat.None, Pool.Managed);
buffer._usage = usage;
if (data != null)
{
SharpDX.DataStream ds = buffer._buffer.Lock(0, numVertices * vertexElements.Stride, LockFlags.None);
for (int i = 0; i < data.Length; i++)
{
ds.Write(data[i]);
}
buffer._buffer.Unlock();
}
return(buffer);
}
public VertexBuffer CreateVertexBuffer <T>(VertexBufferUsage usage, T[] data, int numVertices, VertexElementSet declaration) where T : struct
{
return(Direct3D9VertexBuffer.CreateBuffer(usage, _device, data, numVertices, declaration));
}
public VertexBuffer(VertexBufferUsage usage = VertexBufferUsage.BUFFER_STATIC)
{
this._usage = usage;
_id = (uint)GL.GenBuffer();
}