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allow the texture packer to forcibly be square or a power of two

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Ell 2021-02-11 01:09:07 +01:00
parent 9146d7f2ba
commit 2cf912255d
1 changed files with 23 additions and 2 deletions
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25
MLEM.Data/RuntimeTexturePacker.cs
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@ -17,6 +17,8 @@ namespace MLEM.Data {
private readonly List<Request> textures = new List<Request>(); private readonly List<Request> textures = new List<Request>();
private readonly bool autoIncreaseMaxWidth; private readonly bool autoIncreaseMaxWidth;
private readonly bool forcePowerOfTwo;
private readonly bool forceSquare;
/// <summary> /// <summary>
/// The generated packed texture. /// The generated packed texture.
@ -42,9 +44,13 @@ namespace MLEM.Data {
/// </summary> /// </summary>
/// <param name="maxWidth">The maximum width that the packed texture can have. Defaults to 2048.</param> /// <param name="maxWidth">The maximum width that the packed texture can have. Defaults to 2048.</param>
/// <param name="autoIncreaseMaxWidth">Whether the maximum width should be increased if there is a texture to be packed that is wider than <see cref="maxWidth"/>. Defaults to false.</param> /// <param name="autoIncreaseMaxWidth">Whether the maximum width should be increased if there is a texture to be packed that is wider than <see cref="maxWidth"/>. Defaults to false.</param>
public RuntimeTexturePacker(int maxWidth = 2048, bool autoIncreaseMaxWidth = false) { /// <param name="forcePowerOfTwo">Whether the resulting <see cref="PackedTexture"/> should have a width and height that is a power of two</param>
/// <param name="forceSquare">Whether the resulting <see cref="PackedTexture"/> should be square regardless of required size</param>
public RuntimeTexturePacker(int maxWidth = 2048, bool autoIncreaseMaxWidth = false, bool forcePowerOfTwo = false, bool forceSquare = false) {
this.maxWidth = maxWidth; this.maxWidth = maxWidth;
this.autoIncreaseMaxWidth = autoIncreaseMaxWidth; this.autoIncreaseMaxWidth = autoIncreaseMaxWidth;
this.forcePowerOfTwo = forcePowerOfTwo;
this.forceSquare = forceSquare;
} }
/// <summary> /// <summary>
@ -97,9 +103,17 @@ namespace MLEM.Data {
stopwatch.Stop(); stopwatch.Stop();
this.LastCalculationTime = stopwatch.Elapsed; this.LastCalculationTime = stopwatch.Elapsed;
// generate texture based on required size // figure out texture size
var width = this.textures.Max(t => t.PackedArea.Right); var width = this.textures.Max(t => t.PackedArea.Right);
var height = this.textures.Max(t => t.PackedArea.Bottom); var height = this.textures.Max(t => t.PackedArea.Bottom);
if (this.forcePowerOfTwo) {
width = ToPowerOfTwo(width);
height = ToPowerOfTwo(height);
}
if (this.forceSquare)
width = height = Math.Max(width, height);
// generate texture
this.PackedTexture = new Texture2D(device, width, height); this.PackedTexture = new Texture2D(device, width, height);
device.Disposing += (o, a) => this.PackedTexture.Dispose(); device.Disposing += (o, a) => this.PackedTexture.Dispose();
@ -155,6 +169,13 @@ namespace MLEM.Data {
} }
} }
private static int ToPowerOfTwo(int value) {
var ret = 1;
while (ret < value)
ret <<= 1;
return ret;
}
private class Request { private class Request {
public readonly TextureRegion Texture; public readonly TextureRegion Texture;