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further improve RuntimeTexturePacker performance by only checking against already packed textures

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Ell 2022-05-27 11:41:21 +02:00
parent 93a82bcf36
commit 61770d59b1
1 changed files with 16 additions and 13 deletions
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29
MLEM.Data/RuntimeTexturePacker.cs
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@ -34,7 +34,8 @@ namespace MLEM.Data {
/// </summary>
public TimeSpan LastTotalTime => this.LastCalculationTime + this.LastPackTime;
private readonly List<Request> textures = new List<Request>();
private readonly List<Request> texturesToPack = new List<Request>();
private readonly List<Request> alreadyPackedTextures = new List<Request>();
private readonly Dictionary<Texture2D, TextureData> dataCache = new Dictionary<Texture2D, TextureData>();
private readonly bool autoIncreaseMaxWidth;
private readonly bool forcePowerOfTwo;
@ -148,7 +149,7 @@ namespace MLEM.Data {
throw new InvalidOperationException($"Cannot add texture with width {texture.Width} to a texture packer with max width {this.maxWidth}");
}
}
this.textures.Add(new Request(texture, result, padding, padWithPixels));
this.texturesToPack.Add(new Request(texture, result, padding, padWithPixels));
}
/// <summary>
@ -162,19 +163,19 @@ namespace MLEM.Data {
if (this.PackedTexture != null)
throw new InvalidOperationException("Cannot pack a texture packer that is already packed");
// we pack larger textures first, so that smaller textures can fit in the gaps that larger ones leave
this.textures.Sort((r1, r2) => (r2.Texture.Width * r2.Texture.Height).CompareTo(r1.Texture.Width * r1.Texture.Height));
// set pack areas for each request
// we pack larger textures first, so that smaller textures can fit in the gaps that larger ones leave
var stopwatch = Stopwatch.StartNew();
foreach (var request in this.textures)
foreach (var request in this.texturesToPack.OrderByDescending(t => t.Texture.Width * t.Texture.Height)) {
request.PackedArea = this.FindFreeArea(request);
this.alreadyPackedTextures.Add(request);
}
stopwatch.Stop();
this.LastCalculationTime = stopwatch.Elapsed;
// figure out texture size and generate texture
var width = this.textures.Max(t => t.PackedArea.Right);
var height = this.textures.Max(t => t.PackedArea.Bottom);
var width = this.alreadyPackedTextures.Max(t => t.PackedArea.Right);
var height = this.alreadyPackedTextures.Max(t => t.PackedArea.Bottom);
if (this.forcePowerOfTwo) {
width = ToPowerOfTwo(width);
height = ToPowerOfTwo(height);
@ -186,21 +187,22 @@ namespace MLEM.Data {
// copy texture data onto the packed texture
stopwatch.Restart();
using (var data = this.PackedTexture.GetTextureData()) {
foreach (var request in this.textures)
foreach (var request in this.alreadyPackedTextures)
this.CopyRegion(data, request);
}
stopwatch.Stop();
this.LastPackTime = stopwatch.Elapsed;
// invoke callbacks
foreach (var request in this.textures) {
foreach (var request in this.alreadyPackedTextures) {
var packedArea = request.PackedArea.Shrink(new Point(request.Padding));
request.Result.Invoke(new TextureRegion(this.PackedTexture, packedArea));
if (this.disposeTextures)
request.Texture.Texture.Dispose();
}
this.textures.Clear();
this.texturesToPack.Clear();
this.alreadyPackedTextures.Clear();
this.dataCache.Clear();
}
@ -210,7 +212,8 @@ namespace MLEM.Data {
public void Reset() {
this.PackedTexture?.Dispose();
this.PackedTexture = null;
this.textures.Clear();
this.texturesToPack.Clear();
this.alreadyPackedTextures.Clear();
this.dataCache.Clear();
this.LastCalculationTime = TimeSpan.Zero;
this.LastPackTime = TimeSpan.Zero;
@ -231,7 +234,7 @@ namespace MLEM.Data {
while (true) {
var intersected = false;
var area = new Rectangle(pos, size);
foreach (var tex in this.textures) {
foreach (var tex in this.alreadyPackedTextures) {
if (tex.PackedArea.Intersects(area)) {
pos.X = tex.PackedArea.Right;
// when we move down, we want to move down by the smallest intersecting texture's height