public VertexBuffer(Type type, int length, bool isStream = false)
{
TotalBuffers++;
VBO = GL.GenBuffer();
var usageHint = isStream ? GL.GL_STREAM_DRAW : GL.GL_STATIC_DRAW;
streaming = isStream;
this.type = type;
try
{
vertextype = (IVertexType)Activator.CreateInstance(type);
decl = vertextype.GetVertexDeclaration();
}
catch (Exception)
{
throw new Exception(string.Format("{0} is not a valid IVertexType", type.FullName));
}
GL.GenVertexArrays(1, out VAO);
GLBind.VertexArray(VAO);
GL.BindBuffer(GL.GL_ARRAY_BUFFER, VBO);
GL.BufferData(GL.GL_ARRAY_BUFFER, (IntPtr)(length * decl.Stride), IntPtr.Zero, usageHint);
size = length;
decl.SetPointers();
VertexCount = length;
}