/// <summary>
/// Initializes a new instance of the OpenGLVertexBuffer.
/// </summary>
/// <param name="uv">The Ultraviolet context.</param>
/// <param name="vdecl">The vertex declaration for this buffer.</param>
/// <param name="vcount">The number of vertices in the buffer.</param>
/// <param name="usage">The buffer's usage type.</param>
public OpenGLVertexBuffer(UltravioletContext uv, VertexDeclaration vdecl, Int32 vcount, UInt32 usage)
: base(uv, vdecl, vcount)
{
Contract.Require(vdecl, nameof(vdecl));
this.vdecl = vdecl;
this.usage = usage;
this.size = new IntPtr(vdecl.VertexStride * vcount);
var buffer = 0u;
uv.QueueWorkItem(state =>
{
using (OpenGLState.ScopedCreateArrayBuffer(out buffer))
{
gl.NamedBufferData(buffer, gl.GL_ARRAY_BUFFER, size, null, usage);
gl.ThrowIfError();
}
}).Wait();
this.buffer = buffer;
}