/// <summary>
/// Prepares the settings required for a vertex attribute.
/// </summary>
/// <param name="index">The line number of this attribute in the shader.</param>
/// <param name="size">Specifies the number of components per generic vertex attribute.</param>
/// <param name="type">Specifies the data type of each component in the array.</param>
/// <param name="stride">Specifies the byte offset between consecutive generic vertex attributes. If stride is 0, the generic vertex attributes are understood to be tightly packed in the array.</param>
/// <param name="offsetPointer">Specifies a offset of the first component of the first generic vertex attribute in the array in the data store of the buffer currently bound to the GL_ARRAY_BUFFER target.</param>
/// <param name="normalized">Specifies whether fixed-point data values should be normalized or converted directly as fixed-point values when they are accessed.</param>
/// <param name="divisor">Specify the number of instances that will pass between updates of the generic attribute at slot index.</param>
public VertexAttribPointer(uint index, int size, OGLType type, int stride, IntPtr offsetPointer, bool normalized = false, uint divisor = 0)
{
Index = index;
Size = size;
Type = type;
Stride = stride;
OffsetPointer = offsetPointer;
Normalized = normalized;
DivisorValue = divisor;
//CurrentVariant = new Action<OpenGL>(InvokeDefaultVariant);
}
//private Action<OpenGL> CurrentVariant
//{
// get { return _currentVariant; }
// set { _currentVariant = value; }
//}
#endregion properties
#region events
#endregion events
#region constructors
/// <summary>
/// Prepares the settings required for a vertex attribute.
/// </summary>
/// <param name="index">The line number of this attribute in the shader.</param>
/// <param name="size">Specifies the number of components per generic vertex attribute.</param>
/// <param name="type">Specifies the data type of each component in the array.</param>
/// <param name="stride">Specifies the byte offset between consecutive generic vertex attributes. If stride is 0, the generic vertex attributes are understood to be tightly packed in the array.</param>
/// <param name="offsetPointer">Specifies a offset of the first component of the first generic vertex attribute in the array in the data store of the buffer currently bound to the GL_ARRAY_BUFFER target.</param>
/// <param name="normalized">Specifies whether fixed-point data values should be normalized or converted directly as fixed-point values when they are accessed.</param>
/// <param name="divisor">Specify the number of instances that will pass between updates of the generic attribute at slot index.</param>
public VertexAttribPointer(uint index, int size, OGLType type, int stride, IntPtr offsetPointer, bool normalized = false, uint divisor = 0)
{
Index = index;
Size = size;
Type = type;
Stride = stride;
OffsetPointer = offsetPointer;
Normalized = normalized;
DivisorValue = divisor;
//CurrentVariant = new Action<OpenGL>(InvokeDefaultVariant);
}
/// <summary>
/// Calls the glBufferData(...). The size will be used as value for Size property.
/// </summary>
/// <param name="gl">The gl.</param>
/// <param name="target">The buffer data target.</param>
/// <param name="size">The size of the data buffer.</param>
/// <param name="data">The pointer to the data in memory.</param>
/// <param name="usage">The usage.</param>
public virtual void SetBufferData(OpenGL gl, OGLBufferDataTarget target, int size, IntPtr data, OGLModelUsage usage, int stride, OGLType bufferDataType,
bool bind = false, OGLBindBufferTarget bindTarget = OGLBindBufferTarget.ArrayBuffer)
{
Size = size / stride;
Stride = stride;
if (bind)
{
BindBuffer(gl, bindTarget);
}
gl.BufferData((uint)target, size, data, (uint)usage);
}
/// <summary>
/// Calls the glBufferData(...). The size will be used as value for Size property.
/// </summary>
/// <param name="gl">The gl.</param>
/// <param name="target">The buffer data target.</param>
/// <param name="size">The size of the data buffer.</param>
/// <param name="data">The pointer to the data in memory.</param>
/// <param name="usage">The usage.</param>
public virtual void SetBufferData(OpenGL gl, OGLBufferDataTarget target, int size, IntPtr data, OGLModelUsage usage, int stride, OGLType bufferDataType,
bool bind = false, OGLBindBufferTarget bindTarget = OGLBindBufferTarget.ArrayBuffer)
{
Size = size / stride;
Stride = stride;
if(bind)
BindBuffer(gl, bindTarget);
gl.BufferData((uint)target, size, data, (uint)usage);
}