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Rich Geldreich
2026-02-20 14:21:06 -05:00
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@@ -380,7 +380,7 @@ Use the `-no_ktx` and `-etc1_only`/`-format_only` options to unpack to less file
`-info` and `-validate` will just display file information and not output any files.
The written mipmapped, cubemap, or texture array .KTX/.DDS files will be in a wide variety of compressed GPU texture formats (PVRTC1 4bpp, ETC1-2, BC1-5, BC7, etc.), and to our knowledge there is unfortunately (as of 2024) still no single .KTX or .DDS viewer tool that correctly and reliably supports every GPU texture format that we support. BC1-5 and BC7 files are viewable using AMD's Compressonator, ETC1/2 using Mali's Texture Compression Tool, and PVRTC1 using Imagination Tech's PVRTexTool. [RenderDoc](https://renderdoc.org/) has a useful texture file viewer for many formats. The macOS Finder supports previewing .EXR and .KTX files in various GPU formats. The Windows 11 Explorer can preview .DDS files. The [online OpenHDR Viewer](https://viewer.openhdr.org/) is useful for viewing .EXR/.HDR image files.
The written mipmapped, cubemap, or texture array .KTX/.DDS files will be in a wide variety of compressed GPU texture formats (PVRTC1 4bpp, ETC1-2, BC1-5, BC7, etc.), and to our knowledge there is unfortunately (as of 2024) still no single .KTX or .DDS viewer tool that correctly and reliably supports every GPU texture format that we support. BC1-5 and BC7 files are viewable using AMD's Compressonator, ETC1/2 using Mali's Texture Compression Tool, and PVRTC1 using Imagination Tech's PVRTexTool. [RenderDoc](https://renderdoc.org/) has a useful texture file viewer for many formats. The macOS *Finder* app supports previewing .EXR, .ASTC and .KTX files in various GPU formats. The Windows 11 Explorer can preview .DDS files. The [online OpenHDR Viewer](https://viewer.openhdr.org/) is useful for viewing .EXR/.HDR image files.
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@@ -511,14 +511,15 @@ checking tool (https://reuse.software/). See the [.reuse](https://github.com/Bin
External Tool Links
-------------------
- [ARM's astcenc](https://github.com/ARM-software/astc-encoder) - Crucial official tool from ARM which can unpack ASTC format LDR/HDR .astc and .ktx files to .png or .exr for testing and verification purposes.
- [Online .EXR and .HDR Image File Viewer](https://viewer.openhdr.org/) - With strong tone mapping, auto-exposure, HDR histogram.
- [Windows HDR + WCG Image Viewer](https://13thsymphony.github.io/hdrimageviewer/) - A true HDR image viewer for Windows which works on HDR monitors. Also see [the github repo](https://github.com/13thsymphony/HDRImageViewer).
- [KTX-Software](https://github.com/KhronosGroup/KTX-Software) - A suite of tools for examining, compressing and unpacking KTX2 files (including in our various codec formats) from the Khronos Group.
- [AMD Compressonator](https://gpuopen.com/compressonator/) - .DDS viewer, can view .KTX files in some formats.
- [PVRTexTool](https://www.imgtec.com/developers/powervr-sdk-tools/pvrtextool/) - Can view .ASTC and .KTX files in some formats. (Note: .DDS viewer seems busted for BC1, doesn't support BC7 at all.)
- [Microsoft's DirectXTex](https://github.com/microsoft/DirectXTex) - Samples contain a basic .DDS viewer. (Note: May still have issues loading .DDS files with texture dimensions that aren't divisible by 4 texels.)
- [RenderDoc](https://renderdoc.org/) - Reliable viewer for LDR/HDR .DDS files in BC1-7 formats.
- [Mali Texture Compression Tool](https://community.arm.com/support-forums/f/graphics-gaming-and-vr-forum/52390/announcement-mali-texture-compression-tool-end-of-life) - Now deprecated.
- [ARM's astcenc](https://github.com/ARM-software/astc-encoder) - Can unpack ASTC format LDR/HDR .astc and .ktx files to .png etc. for testing.
For more useful links, papers, and tools/libraries, see the end of the [UASTC HDR 4x4 texture specification](https://github.com/BinomialLLC/basis_universal/wiki/UASTC-HDR-4x4-Texture-Specification-v1.1#papersfurther-reading).