/// <summary>
/// Creates a buffer object of type T.
/// </summary>
/// <param name="Data">Specifies a pointer to data that will be copied into the data store for initialization.</param>
/// <param name="Target">Specifies the target buffer object.</param>
/// <param name="Hint">Specifies the expected usage of the data store.</param>
public VBO(T[] Data, BufferTarget Target = OpenGL.BufferTarget.ArrayBuffer, BufferUsageHint Hint = BufferUsageHint.StaticDraw)
{
ID = Gl.CreateVBO <T>(BufferTarget = Target, Data, Hint);
Size = (Data is int[] ? 1 : (Data is Vector2[] ? 2 : (Data is Vector3[] ? 3 : (Data is Vector4[] ? 4 : 0))));
PointerType = (Data is int[] ? VertexAttribPointerType.Int : VertexAttribPointerType.Float);
Count = Data.Length;
}
/// <summary>
/// Creates a buffer object of type T with a specified length.
/// </summary>
/// <param name="Length">The length of the vertex buffer.</param>
/// <param name="Target">Specifies the target buffer object.</param>
/// <param name="Hint">Specifies the expected usage of the data store.</param>
public VBO(int Length, BufferTarget Target = BufferTarget.ArrayBuffer, BufferUsageHint Hint = BufferUsageHint.StaticDraw)
{
ID = Gl.CreateVBO <T>(BufferTarget = Target, Hint, Length);
this.Size = GetTypeComponentSize();
this.PointerType = GetAttribPointerType();
this.Count = Length;
this.IsIntegralType = IsTypeIntegral();
}
/// <summary>
/// Creates a buffer object of type T with a specified length.
/// This allows the array T[] to be larger than the actual size necessary to buffer.
/// Useful for reusing resources and avoiding unnecessary GC action.
/// </summary>
/// <param name="Data">An array of data of type T (which must be a struct) that will be buffered to the GPU.</param>
/// <param name="Position">An offset into the Data array from which to begin buffering.</param>
/// <param name="Length">The length of the valid data in the data array.</param>
/// <param name="Target">Specifies the target buffer object.</param>
/// <param name="Hint">Specifies the expected usage of the data store.</param>
public VBO(T[] Data, int Position, int Length, BufferTarget Target = OpenGL.BufferTarget.ArrayBuffer, BufferUsageHint Hint = BufferUsageHint.StaticDraw)
{
Length = Math.Max(0, Math.Min(Length, Data.Length));
ID = Gl.CreateVBO <T>(BufferTarget = Target, Data, Hint, Position, Length);
this.Size = (Data is int[] ? 1 : (Data is Vector2[] ? 2 : (Data is Vector3[] ? 3 : (Data is Vector4[] ? 4 : 0))));
this.PointerType = (Data is int[] ? VertexAttribPointerType.Int : VertexAttribPointerType.Float);
this.Count = Length;
}
/// <summary>
/// Creates a buffer object of type T with a specified length.
/// This allows the array T[] to be larger than the actual size necessary to buffer.
/// Useful for reusing resources and avoiding unnecessary GC action.
/// </summary>
/// <param name="Data">An array of data of type T (which must be a struct) that will be buffered to the GPU.</param>
/// <param name="Position">An offset into the Data array from which to begin buffering.</param>
/// <param name="Length">The length of the valid data in the data array.</param>
/// <param name="Target">Specifies the target buffer object.</param>
/// <param name="Hint">Specifies the expected usage of the data store.</param>
/// <param name="Divisor">Specifies the devisor when using instanced rendering</param>
public VBO(T[] Data, int Position, int Length, BufferTarget Target = BufferTarget.ArrayBuffer, BufferUsageHint Hint = BufferUsageHint.StaticDraw)
{
Length = Math.Max(0, Math.Min(Length, Data.Length));
ID = Gl.CreateVBO <T>(BufferTarget = Target, Data, Hint, Position, Length);
this.Size = GetTypeComponentSize();
this.PointerType = GetAttribPointerType();
this.Count = Length;
this.IsIntegralType = IsTypeIntegral();
}
