private VectorInt2 AllocateTexture(WadTexture texture)
{
// Check if the texture is already loaded
{
VectorInt2 position;
if (PackedTextures.TryGetValue(texture, out position))
{
return(position);
}
}
// Allocate texture
{
VectorInt2?position = TexturePacker.TryAdd(texture.Image.Size);
if (position == null)
{
throw new TextureAtlasFullException();
}
// Upload texture
if (Texture == null)
{
Texture = Texture2D.New(GraphicsDevice, TextureAtlasSize, TextureAtlasSize, SharpDX.DXGI.Format.B8G8R8A8_UNorm, TextureFlags.ShaderResource, 1, SharpDX.Direct3D11.ResourceUsage.Default);
}
TextureLoad.Update(GraphicsDevice, Texture, texture.Image, position.Value);
PackedTextures.Add(texture, position.Value);
return(position.Value);
}
}
private void PreloadReplaceTextures(IEnumerable <WadMoveable> newMoveables, IEnumerable <WadStatic> newStatics)
{
Dispose();
// Collect textures
var textures = new HashSet <WadTexture>();
foreach (var moveable in newMoveables)
{
foreach (var mesh in moveable.Meshes)
{
foreach (WadPolygon polygon in mesh.Polys)
{
textures.Add((WadTexture)polygon.Texture.Texture);
}
}
}
foreach (var stat in newStatics)
{
foreach (WadPolygon polygon in stat.Mesh.Polys)
{
textures.Add((WadTexture)polygon.Texture.Texture);
}
}
// Order textures for packing
var packedTextures = new List <WadTexture>(textures);
packedTextures.Sort(new ComparerWadTextures());
// Pack the textures in a single atlas
CreateTexturePacker();
foreach (var texture in packedTextures)
{
VectorInt2?positionInAtlas = TexturePacker.TryAdd(texture.Image.Size);
if (positionInAtlas == null)
{
throw new TextureAtlasFullException();
}
PackedTextures.Add(texture, positionInAtlas.Value);
}
// Create texture atlas
var tempBitmap = ImageC.CreateNew(TextureAtlasSize, TextureAtlasSize);
foreach (var texture in PackedTextures)
{
tempBitmap.CopyFrom(texture.Value.X, texture.Value.Y, texture.Key.Image);
}
Texture = TextureLoad.Load(GraphicsDevice, tempBitmap, SharpDX.Direct3D11.ResourceUsage.Default);
}
