float[] newData = { 1.0f, 2.0f, 3.0f, 4.0f }; int offset = 4 * sizeof(float); GL.BufferSubData(BufferTarget.ArrayBuffer, offset, newData.Length * sizeof(float), newData);
byte[] newData = LoadTextureData(); GL.BufferSubData(BufferTarget.TextureBuffer, 0, newData.Length, newData);The GL BufferSubData method is part of the OpenTK package library.