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44 lines
2.5 KiB
ReStructuredText
44 lines
2.5 KiB
ReStructuredText
:github_url: hide
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.. _class_CompressedTexture2DArray:
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CompressedTexture2DArray
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========================
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**繼承：** :ref:`CompressedTextureLayered<class_CompressedTextureLayered>` **<** :ref:`TextureLayered<class_TextureLayered>` **<** :ref:`Texture<class_Texture>` **<** :ref:`Resource<class_Resource>` **<** :ref:`RefCounted<class_RefCounted>` **<** :ref:`Object<class_Object>`
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二維紋理的陣列，可選擇壓縮。
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.. rst-class:: classref-introduction-group
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說明
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----
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A texture array that is loaded from a ``.ctexarray`` file. This file format is internal to Godot; it is created by importing other image formats with the import system. **CompressedTexture2DArray** can use one of 4 compression methods:
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- Lossless (WebP or PNG, uncompressed on the GPU)
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- Lossy (WebP, uncompressed on the GPU)
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- VRAM Compressed (compressed on the GPU)
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- VRAM Uncompressed (uncompressed on the GPU)
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- Basis Universal (compressed on the GPU. Lower file sizes than VRAM Compressed, but slower to compress and lower quality than VRAM Compressed)
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Only **VRAM Compressed** actually reduces the memory usage on the GPU. The **Lossless** and **Lossy** compression methods will reduce the required storage on disk, but they will not reduce memory usage on the GPU as the texture is sent to the GPU uncompressed.
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Using **VRAM Compressed** also improves loading times, as VRAM-compressed textures are faster to load compared to textures using lossless or lossy compression. VRAM compression can exhibit noticeable artifacts and is intended to be used for 3D rendering, not 2D.
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See :ref:`Texture2DArray<class_Texture2DArray>` for a general description of texture arrays.
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.. |virtual| replace:: :abbr:`virtual (本方法通常需要使用者覆寫才能生效。)`
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.. |required| replace:: :abbr:`required (This method is required to be overridden when extending its base class.)`
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.. |const| replace:: :abbr:`const (本方法沒有副作用。不會修改該實例的任何成員變數。)`
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.. |vararg| replace:: :abbr:`vararg (本方法除了這裡描述的參數外，還可以接受任意數量的參數。)`
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.. |constructor| replace:: :abbr:`constructor (本方法用於建構一個型別。)`
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.. |static| replace:: :abbr:`static (本方法無需實例即可呼叫，因此可以直接使用類別名稱呼叫。)`
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.. |operator| replace:: :abbr:`operator (本方法描述將本型別作為左運算元時可用的有效運算子。)`
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.. |bitfield| replace:: :abbr:`BitField (此值是由下列旗標組成的位元遮罩整數。)`
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.. |void| replace:: :abbr:`void (無回傳值。)`
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