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@@ -174,7 +174,7 @@ Note: The one exception to this promise are .basis textures marked as video. We
 
 ### Transcoder details
 
-The transcoder unpacks .basis files to various GPU texture formats, almost always without needing to decompress entire images at the pixel level (i.e. it only deals with arrays of blocks). The one exception is PVRTC1, where the transcoder needs to recompute the per-pixel selector ("modulation") values, but it does so using simple scalar operations.
+The transcoder unpacks .basis files directly to various GPU texture formats, almost always without needing to decompress and recompress each block at the pixel level (which would be too slow and energy intensive in Javascript/WebAssembly). Small precomputed lookup tables are used to accelerate the direct conversion of the internal ETC1S format texture data to the desired output texture data. This new approach to GPU texture compression bypasses the need to recompress each block's pixels to the desired output format using Principle Component Anaylsis (PCA), or spend cycles determining the output selectors for each individual pixel. The ETC1S texture format is a strong subset of all the other block texture formats. The one exception is PVRTC1, where the transcoder needs to recompute the per-pixel selector ("modulation") values, but it does so using simple scalar operations.
 
 To use .basis files in an application, you only need the files in the "transcoder" directory. The entire transcoder lives in a single .cpp file: transcoder/basisu_transcoder.cpp. If compiling with gcc/clang, be sure strict aliasing is disabled when compiling this file, as I have not tested either the encoder or transcoder with strict aliasing enabled: -fno-strict-aliasing (The Linux kernel is also compiled with this option.) The transcoder can also be cross compiled using emscripten (emcc), for web use.