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63 行
2.2 KiB
63 行
2.2 KiB
using System;
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using UnityEngine;
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namespace VRMShaders
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{
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public sealed class RuntimeTextureSerializer : ITextureSerializer
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{
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public bool CanExportAsEditorAssetFile(Texture texture, ColorSpace exportColorSpace)
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{
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return false;
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}
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public (byte[] bytes, string mime) ExportBytesWithMime(Texture2D texture, ColorSpace exportColorSpace)
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{
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try
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{
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var png = texture.EncodeToPNG();
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if (png != null)
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{
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return (png, "image/png");
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}
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else
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{
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// Failed, because texture is compressed.
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// ex. ".DDS" file, or Compression is enabled in Texture Import Settings.
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return CopyTextureAndGetBytesWithMime(texture, exportColorSpace);
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}
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}
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catch (ArgumentException ex)
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{
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// System.ArgumentException: not readable, the texture memory can not be accessed from scripts. You can make the texture readable in the Texture Import Settings.
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// Failed, because texture is not readable.
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Debug.LogWarning(ex);
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// 単純に EncodeToPNG できないため、コピーしてから EncodeToPNG する。
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return CopyTextureAndGetBytesWithMime(texture, exportColorSpace);
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}
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}
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public void ModifyTextureAssetBeforeExporting(Texture texture)
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{
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// NOTE: Do nothing.
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}
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private static (byte[] bytes, string mime) CopyTextureAndGetBytesWithMime(Texture2D texture, ColorSpace colorSpace)
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{
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var needsAlpha = texture.format != TextureFormat.RGB24;
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var copiedTex = TextureConverter.CopyTexture(texture, colorSpace, needsAlpha, null);
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var bytes = copiedTex.EncodeToPNG();
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if (Application.isPlaying)
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{
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UnityEngine.Object.Destroy(copiedTex);
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}
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else
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{
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UnityEngine.Object.DestroyImmediate(copiedTex);
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}
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return (bytes, "image/png");
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}
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}
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}
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