71 lines
3.1 KiB
C#
71 lines
3.1 KiB
C#
#if UNITY_EDITOR
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using System;
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using HotUpdate.UI;
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using UnityEditor;
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namespace AIGame.EditorTools
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{
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/// <summary>UI 图集原图保持未压缩，其他图片按平台设置压缩格式。</summary>
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public sealed class TexturePlatformPostprocessor : AssetPostprocessor
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{
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private void OnPreprocessTexture()
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{
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// 只处理项目图片，不覆盖 Packages 中的包资源。
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if (!assetPath.StartsWith("Assets/", StringComparison.OrdinalIgnoreCase))
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return;
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var importer = (TextureImporter)assetImporter;
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if (UiAtlasPaths.IsTexturePath(assetPath))
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{
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ConfigureUiAtlasSource(importer);
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return;
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}
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// Unity 的 Windows 纹理设置使用 Standalone 平台组。
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SetPlatformFormat(importer, "Standalone", TextureImporterFormat.DXT5);
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SetPlatformFormat(importer, "iPhone", TextureImporterFormat.ASTC_6x6);
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SetPlatformFormat(importer, "Android", TextureImporterFormat.ASTC_6x6);
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SetPlatformFormat(importer, "WebGL", TextureImporterFormat.ASTC_8x8);
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}
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public static bool ConfigureUiAtlasSource(TextureImporter importer)
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{
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if (!UiAtlasPaths.IsTexturePath(importer.assetPath)) return false;
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// 源图使用无损 RGBA32，平台覆盖关闭；最终压缩由 SpriteAtlas 自己处理。
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bool changed = SetUncompressedSource(importer, "DefaultTexturePlatform");
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changed |= SetUncompressedSource(importer, "Standalone");
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changed |= SetUncompressedSource(importer, "iPhone");
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changed |= SetUncompressedSource(importer, "Android");
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changed |= SetUncompressedSource(importer, "WebGL");
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return changed;
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}
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private static bool SetUncompressedSource(TextureImporter importer, string platform)
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{
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var settings = importer.GetPlatformTextureSettings(platform);
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if (!settings.overridden && settings.format == TextureImporterFormat.RGBA32
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&& settings.textureCompression == TextureImporterCompression.Uncompressed
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&& !settings.crunchedCompression) return false;
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settings.name = platform;
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settings.overridden = false;
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settings.format = TextureImporterFormat.RGBA32;
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settings.textureCompression = TextureImporterCompression.Uncompressed;
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settings.crunchedCompression = false;
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importer.SetPlatformTextureSettings(settings);
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return true;
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}
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private static void SetPlatformFormat(
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TextureImporter importer, string platform, TextureImporterFormat format)
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{
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// 保留尺寸、缩放算法等原有设置，仅覆盖压缩相关选项。
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var settings = importer.GetPlatformTextureSettings(platform);
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settings.name = platform;
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settings.overridden = true;
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settings.format = format;
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settings.crunchedCompression = false;
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importer.SetPlatformTextureSettings(settings);
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}
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}
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}
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#endif
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