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();
}
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();
}
}
