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Ktx tagged news

Cesium released CesiumJS 1.83 and added support for KTX 2.0 and Basis Universal compressed textures, bringing transmission and runtime optimizations for global imagery. Cesium added support for glTF models with the KHR_texture_basisu extension and added support for 8-bit, 16-bit, and 32-bit float KTX2 specular environment maps.

Today, The Khronos® Group announces the ratification of KTX™ 2.0, adding support for Basis Universal supercompression to this container format for reliable, ubiquitous distribution of GPU textures. Basis Universal is a compression technology developed by Binomial that produces compact textures that can be efficiently transcoded to a variety of GPU compressed texture formats at run-time. Additionally, Khronos has released the KHR_texture_basisu extension enabling glTF to contain KTX 2.0 textures, resulting in universally distributable glTF assets that reduce download size and use natively supported texture formats to reduce GPU memory size and boost rendering speed on diverse devices and platforms. Lastly, Khronos has released open source tools and transcoders, together with developer and artist guidelines, to enable and encourage widespread usage of KTX 2.0 textures throughout the glTF ecosystem, including the three.js, Babylon.js and Gestaltor viewers that have already integrated support.

The Khronos Group announces the ratification of KTX 2.0, adding support for Basis Universal supercompression to this container format for reliable, ubiquitous distribution of GPU textures. Basis Universal is a compression technology developed by Binomial that produces compact textures that can be efficiently transcoded to a variety of GPU compressed texture formats at run-time. Additionally, Khronos has released the KHR_texture_basisu extension enabling glTF to contain KTX 2.0 textures, resulting in universally distributable glTF assets that reduce download size and use natively supported texture formats to reduce GPU memory size and boost rendering speed on diverse devices and platforms. Lastly, Khronos has released open source tools and transcoders, together with developer and artist guidelines, to enable and encourage widespread usage of KTX 2.0 textures throughout the glTF ecosystem, including the three.js, Babylon.js and Gestaltor viewers that have already integrated support.

Version 2 adds support for ETC2 and EAC textures and conversion of legacy LUMINANCE* and INTENSITY* formats when loading in an OpenGL core context. It includes KTX loader tests for OpenGL ES 3.0 and OpenGL 3.3. In addition a couple of nasty bugs have been fixed including one in the KTX writer where image rows were not padded to 4 bytes as required by the spec. Complete details of the changes are located in the OpenGL ES SDK. A new version of toktx has also been released. New features are ability to create KTX files with textures in sized internal formats and defaulting to RED and RG formats for 1 and 2 channel textures. Naturally it incorporates the bug-fixed writer from libktx. Visit the KTX home page to download these tools.