Comments (4)
I assume this is the right place
No, but don't worry. I understand you had problems trying to use the Khronos Bugzilla. I'll add a repo for specification issues and move this issue there once it is set up. I'll fix the issues in a little while.
Congratulations on being the first person to spot the hidden cookie. I am afraid there is no prize.
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You can find KTX files in https://github.com/KhronosGroup/KTX-Software/tree/master/testimages. You can find some more complex ones, including a cubemap texture in https://github.com/msc-/KTX-Software/tree/incoming/tests/testimages. I'll be moving these to this repo's incoming branch in the near future.
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The padding bytes can be any value. They are ignored by loaders and are there simply to maintain 4-byte alignment for the imageSize fields.
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Mobile devices were a major target for KTX. These require that 32-bit values be aligned on 4-byte boundaries. To keep loaders a little simpler we make sure that all 32-bit values in the the KTX file are 4-byte aligned. One does not typically explain this sort of thing in specifications but I suppose I can add a footnote. Isn't "% 4" sufficient clue that this is about modulo 4?
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Please refile this at https://github.com/KhronosGroup/KTX-Specification/issues and close this one. Sorry to ask but I have not found a way to mark an issue as filed by somebody else or ensure a particular user will receive notifications about updates to the issue.
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Moved to KhronosGroup/KTX-Specification#1
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Thanks.
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Related Issues (20)
- Allow A8B8G8R8 PACK32 formats
- Loading KTX1 and KTX2 file on Linux/OpenGL 4.3 leads to weird error if not luch the program with sudo HOT 4
- Project install installs fmt lib HOT 1
- Preceding `ktx` command name with option leads to error HOT 1
- WebGL test gets shader compile error
- Converting transfer functions (using assign-oetf and convert-oetf) HOT 15
- samplePositions possibly incorrect for single-plane 4:2:2 YUV formats HOT 4
- The JNI binding for input swizzling is broken
- No option to apply `zstd`/`zlib` compression via JNI HOT 21
- Improvements for the Java/JNI bindings HOT 4
- Synchronizing auto-generated files with bindings HOT 2
- How to call `CreateFromMemory`? HOT 2
- Memoy leak when ktxTexture2_DeflateZstd fails
- Running in docker container (GLIBC not found error) HOT 2
- CI build scripts prevent local use with test updates by initializing CTS submodule
- Skipping mipmaps when loading from disk HOT 2
- The execution speed of the ktxTexture2_CompressBasisEx method is quite slow HOT 15
- No definition for ktxTexture2_Destroy in ktx.h HOT 3
- Enabling Automatic Mipmap Generation Causes Validation Error HOT 1
- ktxTexture_SetImageFromMemory should document pointer lifetime guarantees HOT 2
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