public void FreeResources( bool forResizeOnly, bool clearReservedTextures )
{
// Remove temporary textures
// We only remove those that are not shared, shared textures are dealt with
// based on their reference count.
// We can also only free textures which are derived from the target size, if
// required (saves some time & memory thrashing / fragmentation on resize)
List<Texture> assignedTextures = new List<Texture>();
foreach ( CompositionTechnique.TextureDefinition def in technique.TextureDefinitions )
{
if ( !string.IsNullOrEmpty( def.ReferenceCompositorName ) )
{
//This is a reference, isn't created here
continue;
}
// potentially only remove this one if based on size
if ( !forResizeOnly || def.Width == 0 | def.Height == 0 )
{
int subSurfaceCount = def.PixelFormats.Count;
// Potentially many surfaces
for ( int subSurface = 0; subSurface < subSurfaceCount; subSurface++ )
{
string texName = subSurfaceCount > 1 ? GetMrtTextureLocalName( def.Name, subSurface ) : def.Name;
Texture tex = null;
if ( localTextures.TryGetValue( texName, out tex ) )
{
if ( !def.Pooled && def.Scope != CompositionTechnique.TextureScope.Global )
{
// remove myself from central only if not pooled and not global
TextureManager.Instance.Remove( tex.Name );
}
localTextures.Remove( texName );
}
}
if ( subSurfaceCount > 1 )
{
MultiRenderTarget i = null;
if ( localMrts.TryGetValue( def.Name, out i ) )
{
if ( def.Scope != CompositionTechnique.TextureScope.Global )
{
// remove MRT if not global
Root.Instance.RenderSystem.DestroyRenderTarget( i.Name );
}
localMrts.Remove( def.Name );
}
}
}
}
if ( clearReservedTextures )
{
if ( forResizeOnly )
{
List<CompositionTechnique.TextureDefinition> toDelete = new List<CompositionTechnique.TextureDefinition>();
foreach ( CompositionTechnique.TextureDefinition def in reservedTextures.Keys )
{
if ( def.Width == 0 || def.Height == 0 )
{
toDelete.Add( def );
}
}
// just remove the ones which would be affected by a resize
for ( int i = 0; i < toDelete.Count; i++ )
{
this.reservedTextures.Remove( toDelete[ i ] );
}
toDelete = null;
}
else
{
// clear all
reservedTextures.Clear();
}
}
// Now we tell the central list of textures to check if its unreferenced,
// and to remove if necessary. Anything shared that was left in the reserve textures
// will not be released here
CompositorManager.Instance.FreePooledTextures( true );
}
