143 lines
4.5 KiB
Plaintext
143 lines
4.5 KiB
Plaintext
.TH "libktx_history" 3 "Sun Jun 14 2026 18:00:57" "Version 0.0.0" "libktx Reference" \" -*- nroff -*-
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.ad l
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.nh
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.SH NAME
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libktx_history \- Revision History
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.PP
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No longer updated\&. Kept to preserve ancient history\&. For more recent history see the repo log at https://github.com/KhronosGroup/KTX-Software\&. See also the Release Notes in the repo\&.
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.SH "Version 4\&.0"
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.PP
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Added:
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.PD 0
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.IP "\(bu" 1
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Support for KTX Version 2\&.
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.IP "\(bu" 1
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Support for encoding and transcoding Basis Universal images in KTX Version 2 files\&.
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.IP "\(bu" 1
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Function to print info about a KTX file\&.
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.PP
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.SH "Version 3\&.0\&.1"
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.PP
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Fixed:
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.PD 0
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.IP "\(bu" 1
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GitHub issue #159: compile failure with recent Vulkan SDKs\&.
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.IP "\(bu" 1
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Incorrect mapping of GL DXT3 and DXT5 formats to Vulkan equivalents\&.
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.IP "\(bu" 1
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Incorrect BC4 blocksize\&.
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.IP "\(bu" 1
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Missing mapping of PVRTC formats from GL to Vulkan\&.
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.IP "\(bu" 1
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Incorrect block width and height calculations for sizes that are not a multiple of the block size\&.
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.IP "\(bu" 1
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Incorrect KTXorientation key in test images\&.
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.PP
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.SH "Version 3\&.0"
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.PP
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Added:
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.PD 0
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.IP "\(bu" 1
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new \fBktxTexture\fP object based API for reading KTX files without an OpenGL context\&.
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.IP "\(bu" 1
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Vulkan loader\&. #include <ktxvulkan\&.h> to use it\&.
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.PP
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Changed:
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.PD 0
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.IP "\(bu" 1
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\fBktx\&.h\fP to not depend on KHR/khrplatform\&.h and GL{,ES*}/gl{corearb,}\&.h\&. Applications using OpenGL must now include these files themselves\&.
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.IP "\(bu" 1
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ktxLoadTexture[FMN], removing the hack of loading 1D textures as 2D textures when the OpenGL context does not support 1D textures\&. KTX_UNSUPPORTED_TEXTURE_TYPE is now returned\&.
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.PP
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.SH "Version 2\&.0\&.2"
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.PP
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Added:
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.PD 0
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.IP "\(bu" 1
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Support for cubemap arrays\&.
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.PP
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Changed:
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.PD 0
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.IP "\(bu" 1
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New build system
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.PP
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Fixed:
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.PD 0
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.IP "\(bu" 1
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GitHub issue #40: failure to byte-swap key-value lengths\&.
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.IP "\(bu" 1
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GitHub issue #33: returning incorrect target when loading cubemaps\&.
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.IP "\(bu" 1
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GitHub PR #42: loading of texture arrays\&.
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.IP "\(bu" 1
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GitHub PR #41: compilation error when KTX_OPENGL_ES2=1 defined\&.
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.IP "\(bu" 1
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GitHub issue #39: stack-buffer-overflow in toktx
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.IP "\(bu" 1
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Don't use GL_EXTENSIONS on recent OpenGL versions\&.
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.PP
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.SH "Version 2\&.0\&.1"
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.PP
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Added:
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.PD 0
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.IP "\(bu" 1
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CMake build files\&. Thanks to Pavel Rotjberg for the initial version\&.
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.PP
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Changed:
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.PD 0
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.IP "\(bu" 1
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ktxWriteKTXF to check the validity of the type & format combinations passed to it\&.
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.PP
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Fixed:
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.PD 0
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.IP "\(bu" 1
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Public Bugzilla \fR999\fP: 16-bit luminance texture cannot be written\&.
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.IP "\(bu" 1
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compile warnings from compilers stricter than MS Visual C++\&. Thanks to Pavel Rotjberg\&.
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.PP
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.SH "Version 2\&.0"
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.PP
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Added:
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.PD 0
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.IP "\(bu" 1
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support for decoding ETC2 and EAC formats in the absence of a hardware decoder\&.
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.IP "\(bu" 1
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support for converting textures with legacy LUMINANCE, LUMINANCE_ALPHA, etc\&. formats to the equivalent R, RG, etc\&. format with an appropriate swizzle, when loading in OpenGL Core Profile contexts\&.
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.IP "\(bu" 1
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ktxErrorString function to return a string corresponding to an error code\&.
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.IP "\(bu" 1
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tests for ktxLoadTexture[FN] that run under OpenGL ES 3\&.0 and OpenGL 3\&.3\&. The latter includes an EGL on WGL wrapper that makes porting apps between OpenGL ES and OpenGL easier on Windows\&.
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.IP "\(bu" 1
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more texture formats to ktxLoadTexture[FN] and toktx tests\&.
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.PP
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Changed:
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.PD 0
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.IP "\(bu" 1
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ktxLoadTexture[FMN] to discover the capabilities of the GL context at run time and load textures, or not, according to those capabilities\&.
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.PP
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Fixed:
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.PD 0
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.IP "\(bu" 1
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failure of ktxWriteKTXF to pad image rows to 4 bytes as required by the KTX format\&.
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.IP "\(bu" 1
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ktxWriteKTXF exiting with KTX_FILE_WRITE_ERROR when attempting to write more than 1 byte of face-LOD padding\&.
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.PP
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Although there is only a very minor API change, the addition of ktxErrorString, the functional changes are large enough to justify bumping the major revision number\&.
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.SH "Version 1\&.0\&.1"
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.PP
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Implemented ktxLoadTextureM\&. Fixed the following:
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.PD 0
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.IP "\(bu" 1
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Public Bugzilla \fR571\fP: crash when null passed for pIsMipmapped\&.
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.IP "\(bu" 1
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Public Bugzilla \fR572\fP: memory leak when unpacking ETC textures\&.
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.IP "\(bu" 1
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Public Bugzilla \fR573\fP: potential crash when unpacking ETC textures with unused padding pixels\&.
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.IP "\(bu" 1
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Public Bugzilla \fR576\fP: various small fixes\&.
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.PP
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Thanks to Krystian Bigaj for the ktxLoadTextureM implementation and these fixes\&.
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.SH "Version 1\&.0"
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.PP
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Initial release\&.
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