///<summary>
/// Copies a region of this pixelbuffer to normal memory.
///</summary>
///<param name="srcBox">BasicBox describing the source region of this buffer</param>
///<param name="dst">PixelBox describing the destination pixels and format in memory</param>
///<remarks>
/// The source and destination regions don't have to match, in which
/// case scaling is done.
/// Only call this function when the buffer is unlocked.
///</remarks>
public override void BlitToMemory( BasicBox srcBox, PixelBox dst )
{
// Decide on pixel format of temp surface
PixelFormat tmpFormat = Format;
if ( D3DHelper.ConvertEnum( dst.Format ) == D3D.Format.Unknown )
tmpFormat = dst.Format;
if ( surface != null )
{
Debug.Assert( srcBox.Depth == 1 && dst.Depth == 1 );
// Create temp texture
D3D.Texture tmp =
new D3D.Texture( device, dst.Width, dst.Height,
1, // 1 mip level ie topmost, generate no mipmaps
0, D3DHelper.ConvertEnum( tmpFormat ),
D3D.Pool.Scratch );
D3D.Surface subSurface = tmp.GetSurfaceLevel( 0 );
// Copy texture to this temp surface
System.Drawing.Rectangle destRect, srcRect;
srcRect = ToD3DRectangle( srcBox );
destRect = ToD3DRectangleExtent( dst );
D3D.Surface.FromSurface( subSurface, surface, D3D.Filter.None, 0, srcRect, destRect );
// Lock temp surface and copy it to memory
int pitch; // Filled in by D3D
DX.DataRectangle data = subSurface.LockRectangle( D3D.LockFlags.ReadOnly );
// Copy it
PixelBox locked = new PixelBox( dst.Width, dst.Height, dst.Depth, tmpFormat );
FromD3DLock( locked, data );
PixelConverter.BulkPixelConversion( locked, dst );
subSurface.UnlockRectangle();
// Release temporary surface and texture
subSurface.Dispose();
tmp.Dispose();
}
else
{
// Create temp texture
D3D.VolumeTexture tmp =
new D3D.VolumeTexture( device, dst.Width, dst.Height, dst.Depth,
0, D3D.Usage.None,
D3DHelper.ConvertEnum( tmpFormat ),
D3D.Pool.Scratch );
D3D.Volume subVolume = tmp.GetVolumeLevel( 0 );
// Volume
D3D.Box ddestBox = ToD3DBoxExtent( dst );
D3D.Box dsrcBox = ToD3DBox( srcBox );
D3D.Volume.FromVolume( subVolume, volume, D3D.Filter.None, 0, dsrcBox, ddestBox );
// Lock temp surface and copy it to memory
//D3D.LockedBox lbox; // Filled in by D3D
DX.DataBox data = subVolume.LockBox( D3D.LockFlags.ReadOnly );
// Copy it
PixelBox locked = new PixelBox( dst.Width, dst.Height, dst.Depth, tmpFormat );
FromD3DLock( locked, data );
PixelConverter.BulkPixelConversion( locked, dst );
subVolume.UnlockBox();
// Release temporary surface and texture
subVolume.Dispose();
tmp.Dispose();
}
}
public override void Unload()
{
base.Unload();
if ( IsLoaded )
{
if ( this._texture != null )
{
this._texture.Dispose();
this._texture = null;
}
if ( this._normTexture != null )
{
LogManager.Instance.Write( "Disposed normal texture {0}", this.Name );
this._normTexture.Dispose();
this._normTexture = null;
}
if ( this._cubeTexture != null )
{
this._cubeTexture.Dispose();
this._cubeTexture = null;
}
if ( this._volumeTexture != null )
{
this._volumeTexture.Dispose();
this._volumeTexture = null;
}
}
}
private void LoadVolumeTexture()
{
Debug.Assert( this.TextureType == TextureType.ThreeD );
if ( Name.EndsWith( ".dds" ) )
{
Stream stream = ResourceGroupManager.Instance.OpenResource( Name, Group, true, this );
int numMips = this.RequestedMipmapCount + 1;
// check if mip map volume textures are supported
if ( ( _devCaps.TextureCaps & D3D.TextureCaps.MipVolumeMap ) != D3D.TextureCaps.MipVolumeMap )
{
// no mip map support for this kind of textures :(
this.MipmapCount = 0;
numMips = 1;
}
_d3dPool = ( Usage & TextureUsage.Dynamic ) != 0 ? D3D.Pool.Default : D3D.Pool.Managed;
try
{
// load the cube texture from the image data stream directly
_volumeTexture = D3D.VolumeTexture.FromStream( _device, stream, (int)stream.Length, -1, -1, -1, numMips, D3D.Usage.None, D3D.Format.Unknown, _d3dPool, D3D.Filter.None, D3D.Filter.None, 0 );
}
catch ( Exception ex )
{
FreeInternalResources();
throw new Exception( "Can't create volume texture.", ex );
}
// store off a base reference
_texture = _volumeTexture;
// set src and dest attributes to the same, we can't know
D3D.VolumeDescription desc = _volumeTexture.GetLevelDescription( 0 );
_d3dPool = desc.Pool;
SetSrcAttributes( desc.Width, desc.Height, desc.Depth, D3DHelper.ConvertEnum( desc.Format ) );
SetFinalAttributes( desc.Width, desc.Height, desc.Depth, D3DHelper.ConvertEnum( desc.Format ) );
internalResourcesCreated = true;
stream.Close();
}
else
{
// find & load resource data intro stream to allow resource group changes if required
Stream strm = ResourceGroupManager.Instance.OpenResource( Name, Group, true, this );
int pos = Name.LastIndexOf( "." );
String ext = Name.Substring( pos + 1 );
// Call internal LoadImages, not LoadImage since that's external and
// will determine load status etc again
var image = Image.FromStream( strm, ext );
LoadImages( new Image[] { image } );
image.Dispose();
strm.Close();
}
}
private void CreateVolumeTexture()
{
Debug.Assert( Width > 0 && Height > 0 && Depth > 0 );
if ( ( Usage & TextureUsage.RenderTarget ) != 0 )
{
throw new Exception( "SDX Volume texture can not be declared as render target!!, SDXTexture.CreateVolumeTexture" );
}
D3D.Format sdPF = ChooseD3DFormat();
D3D.Usage usage = 0;
int numMips = ( RequestedMipmapCount == 0x7FFFFFFF ) ? -1 : RequestedMipmapCount + 1;
if ( ( Usage & TextureUsage.Dynamic ) != 0 )
{
if ( CanUseDynamicTextures( usage, D3D.ResourceType.VolumeTexture, sdPF ) )
{
usage |= D3D.Usage.Dynamic;
_dynamicTextures = true;
}
else
{
_dynamicTextures = false;
}
}
// check if mip map volume textures are supported
MipmapsHardwareGenerated = false;
if ( ( _devCaps.TextureCaps & D3D.TextureCaps.MipVolumeMap ) != 0 )
{
if ( ( Usage & TextureUsage.AutoMipMap ) != 0 && RequestedMipmapCount != 0 )
{
MipmapsHardwareGenerated = CanAutoGenMipMaps( usage, D3D.ResourceType.VolumeTexture, sdPF );
if ( MipmapsHardwareGenerated )
{
Usage |= TextureUsage.AutoMipMap;
numMips = 0;
}
}
}
else
{
// no mip map support for this kind of textures :(
MipmapCount = 0;
numMips = 1;
}
// derive the pool to use
DeterminePool();
// create the texture
_volumeTexture = new D3D.VolumeTexture( _device,
Width,
Height,
Depth,
numMips,
usage,
sdPF,
_d3dPool );
// store base reference to the texture
_texture = _volumeTexture;
// set the final texture attributes
D3D.VolumeDescription desc = _volumeTexture.GetLevelDescription( 0 );
SetFinalAttributes( desc.Width, desc.Height, desc.Depth, D3DHelper.ConvertEnum( desc.Format ) );
if ( this.MipmapsHardwareGenerated )
_texture.AutoMipGenerationFilter = GetBestFilterMethod();
}
protected override void freeInternalResources()
{
if ( this._texture != null && !_texture.Disposed )
{
this._texture.Dispose();
this._texture = null;
}
if ( this._normTexture != null && !_normTexture.Disposed )
{
this._normTexture.Dispose();
this._normTexture = null;
}
if ( this._cubeTexture != null && !_cubeTexture.Disposed )
{
this._cubeTexture.Dispose();
this._cubeTexture = null;
}
if ( this._volumeTexture != null && !_volumeTexture.Disposed )
{
this._volumeTexture.Dispose();
this._volumeTexture = null;
}
}
