/// <summary>
/// Checks if the potential child texture fits within the level and layer bounds of the parent.
/// </summary>
/// <param name="parent">Texture information for the parent</param>
/// <param name="child">Texture information for the child</param>
/// <param name="layer">Base layer of the child texture</param>
/// <param name="level">Base level of the child texture</param>
/// <returns>Full compatiblity if the child's layer and level count fit within the parent, incompatible otherwise</returns>
public static TextureViewCompatibility ViewSubImagesInBounds(TextureInfo parent, TextureInfo child, int layer, int level)
{
if (level + child.Levels <= parent.Levels &&
layer + child.GetSlices() <= parent.GetSlices())
{
return(TextureViewCompatibility.Full);
}
else
{
return(TextureViewCompatibility.LayoutIncompatible);
}
}
/// <summary>
/// Check if it's possible to create a view, with the given parameters, from this texture.
/// </summary>
/// <param name="info">Texture view information</param>
/// <param name="range">Texture view physical memory ranges</param>
/// <param name="firstLayer">Texture view initial layer on this texture</param>
/// <param name="firstLevel">Texture view first mipmap level on this texture</param>
/// <returns>The level of compatiblilty a view with the given parameters created from this texture has</returns>
public TextureViewCompatibility IsViewCompatible(TextureInfo info, MultiRange range, int layerSize, out int firstLayer, out int firstLevel)
{
int offset = Range.FindOffset(range);
// Out of range.
if (offset < 0)
{
firstLayer = 0;
firstLevel = 0;
return(TextureViewCompatibility.Incompatible);
}
if (!_sizeInfo.FindView(offset, out firstLayer, out firstLevel))
{
return(TextureViewCompatibility.Incompatible);
}
if (!TextureCompatibility.ViewLayoutCompatible(Info, info, firstLevel))
{
return(TextureViewCompatibility.Incompatible);
}
if (info.GetSlices() > 1 && LayerSize != layerSize)
{
return(TextureViewCompatibility.Incompatible);
}
TextureViewCompatibility result = TextureViewCompatibility.Full;
result = TextureCompatibility.PropagateViewCompatibility(result, TextureCompatibility.ViewFormatCompatible(Info, info));
result = TextureCompatibility.PropagateViewCompatibility(result, TextureCompatibility.ViewSizeMatches(Info, info, firstLevel));
result = TextureCompatibility.PropagateViewCompatibility(result, TextureCompatibility.ViewTargetCompatible(Info, info));
result = TextureCompatibility.PropagateViewCompatibility(result, TextureCompatibility.ViewSubImagesInBounds(Info, info, firstLayer, firstLevel));
return((Info.SamplesInX == info.SamplesInX &&
Info.SamplesInY == info.SamplesInY) ? result : TextureViewCompatibility.Incompatible);
}
