/// <summary>
/// Allocate elements to serve a holder of morph / pose target data
/// for hardware morphing / pose blending.
/// </summary>
/// <remarks>
/// This method will allocate the given number of 3D texture coordinate
/// sets for use as a morph target or target pose offset (3D position).
/// These elements will be saved in hwAnimationDataList.
/// It will also assume that the source of these new elements will be new
/// buffers which are not bound at this time, so will start the sources to
/// 1 higher than the current highest binding source. The caller is
/// expected to bind these new buffers when appropriate. For morph animation
/// the original position buffer will be the 'from' keyframe data, whilst
/// for pose animation it will be the original vertex data.
/// </remarks>
public void AllocateHardwareAnimationElements(ushort count)
{
// Find first free texture coord set
short texCoord = 0;
for (var i = 0; i < this.vertexDeclaration.ElementCount; i++)
{
var element = this.vertexDeclaration.GetElement(i);
if (element.Semantic == VertexElementSemantic.TexCoords)
{
++texCoord;
}
}
Debug.Assert(texCoord <= Config.MaxTextureCoordSets);
// Increase to correct size
for (var c = this.HWAnimationDataList.Count; c < count; ++c)
{
// Create a new 3D texture coordinate set
var data = new HardwareAnimationData();
data.TargetVertexElement = this.vertexDeclaration.AddElement(this.vertexBufferBinding.NextIndex, 0,
VertexElementType.Float3,
VertexElementSemantic.TexCoords, texCoord++);
this.HWAnimationDataList.Add(data);
// Vertex buffer will not be bound yet, we expect this to be done by the
// caller when it becomes appropriate (e.g. through a VertexAnimationTrack)
}
}
/// <summary>
/// Allocate elements to serve a holder of morph / pose target data
/// for hardware morphing / pose blending.
/// </summary>
/// <remarks>
/// This method will allocate the given number of 3D texture coordinate
/// sets for use as a morph target or target pose offset (3D position).
/// These elements will be saved in hwAnimationDataList.
/// It will also assume that the source of these new elements will be new
/// buffers which are not bound at this time, so will start the sources to
/// 1 higher than the current highest binding source. The caller is
/// expected to bind these new buffers when appropriate. For morph animation
/// the original position buffer will be the 'from' keyframe data, whilst
/// for pose animation it will be the original vertex data.
/// </remarks>
public void AllocateHardwareAnimationElements( ushort count )
{
// Find first free texture coord set
short texCoord = 0;
for ( int i = 0; i < vertexDeclaration.ElementCount; i++ )
{
VertexElement element = vertexDeclaration.GetElement( i );
if ( element.Semantic == VertexElementSemantic.TexCoords )
++texCoord;
}
Debug.Assert( texCoord <= Config.MaxTextureCoordSets );
// Increase to correct size
for ( int c = HWAnimationDataList.Count; c < count; ++c )
{
// Create a new 3D texture coordinate set
HardwareAnimationData data = new HardwareAnimationData();
data.TargetVertexElement = vertexDeclaration.AddElement( vertexBufferBinding.NextIndex, 0, VertexElementType.Float3, VertexElementSemantic.TexCoords, texCoord++ );
HWAnimationDataList.Add( data );
// Vertex buffer will not be bound yet, we expect this to be done by the
// caller when it becomes appropriate (e.g. through a VertexAnimationTrack)
}
}
