/// <summary>
/// Bind this uniform buffer object and a uniform block to the same binding point.
/// </summary>
/// <param name="uniformBlockIndex">index of uniform block got by (glGetUniformBlockIndex).</param>
/// <param name="uniformBlockBindingPoint">binding point maintained by OpenGL context.</param>
/// <param name="program">shader program.</param>
public void Binding(ShaderProgram program, uint uniformBlockIndex, uint uniformBlockBindingPoint)
{
if (glBindBufferBase == null) { glBindBufferBase = OpenGL.GetDelegateFor<OpenGL.glBindBufferBase>(); }
if (glUniformBlockBinding == null) { glUniformBlockBinding = OpenGL.GetDelegateFor<OpenGL.glUniformBlockBinding>(); }
glBindBufferBase(OpenGL.GL_UNIFORM_BUFFER, uniformBlockBindingPoint, this.BufferId);
glUniformBlockBinding(program.ProgramId, uniformBlockIndex, uniformBlockBindingPoint);
}
/// <summary>
/// pixel unpack buffer's pointer.
/// </summary>
/// <param name="bufferId">用glGenBuffers()得到的VBO的Id。<para>Id got from glGenBuffers();</para></param>
/// <param name="length">此VBO含有多个个元素？<para>How many elements?</para></param>
/// <param name="byteLength">此VBO中的数据在内存中占用多少个字节？<para>How many bytes in this buffer?</para></param>
internal UniformBufferPtr(
uint bufferId, int length, int byteLength)
: base(bufferId, length, byteLength)
{
if (glUniformBlockBinding == null)
{
glUniformBlockBinding = OpenGL.GetDelegateFor <OpenGL.glUniformBlockBinding>();
}
}
/// <summary>
/// Bind this uniform buffer object and a uniform block to the same binding point.
/// </summary>
/// <param name="uniformBlockIndex">index of uniform block got by (glGetUniformBlockIndex).</param>
/// <param name="uniformBlockBindingPoint">binding point maintained by OpenGL context.</param>
/// <param name="program">shader program.</param>
public void Binding(ShaderProgram program, uint uniformBlockIndex, uint uniformBlockBindingPoint)
{
if (glBindBufferBase == null)
{
glBindBufferBase = OpenGL.GetDelegateFor <OpenGL.glBindBufferBase>();
}
if (glUniformBlockBinding == null)
{
glUniformBlockBinding = OpenGL.GetDelegateFor <OpenGL.glUniformBlockBinding>();
}
glBindBufferBase(OpenGL.GL_UNIFORM_BUFFER, uniformBlockBindingPoint, this.BufferId);
glUniformBlockBinding(program.ProgramId, uniformBlockIndex, uniformBlockBindingPoint);
}
