Add ktx

2026-06-14 19:09:18 +01:00
parent 14bd1a9271
commit 13fa90a0e9
3958 changed files with 999286 additions and 4 deletions
@@ -0,0 +1,4 @@
+build/*
+!build/basis_loader.js
+!build/basis_encoder.js
+!build/basis_encoder.wasm
@@ -0,0 +1,69 @@
+cmake_minimum_required(VERSION 3.0)
+
+project(basisu_encoder_js)
+
+# The encoder always supports generating KTX2 files, but Zstandard support is optional. If it's disabled, KTX2 UASTC files will always be uncompressed.
+# If you know you'll never be encoding UASTC+Zstd KTX2 files you can set KTX2_ZSTANDARD to 0 to reduce the size of the compiled encoder.
+option(KTX2_ZSTANDARD "KTX2_ZSTANDARD" TRUE)
+
+message("KTX2_ZSTANDARD=${KTX2_ZSTANDARD}")
+
+if (EMSCRIPTEN)
+  set(CMAKE_CXX_STANDARD 11)
+  
+  set(SRC_LIST
+    ../transcoder/basis_wrappers.cpp
+    ../../transcoder/basisu_transcoder.cpp
+	../../encoder/basisu_backend.cpp                         
+	../../encoder/basisu_basis_file.cpp                      
+	../../encoder/basisu_comp.cpp                            
+	../../encoder/basisu_enc.cpp                             
+	../../encoder/basisu_etc.cpp                             
+	../../encoder/basisu_frontend.cpp                        
+	../../encoder/basisu_gpu_texture.cpp                     
+	../../encoder/basisu_pvrtc1_4.cpp                        
+	../../encoder/basisu_resampler.cpp                       
+	../../encoder/basisu_resample_filters.cpp                
+	../../encoder/basisu_ssim.cpp                            
+	../../encoder/basisu_uastc_enc.cpp                       
+	../../encoder/basisu_bc7enc.cpp
+	../../encoder/basisu_kernels_sse.cpp
+	../../encoder/basisu_opencl.cpp
+	../../encoder/pvpngreader.cpp
+	../../encoder/jpgd.cpp                                   
+  )
+
+  if (KTX2_ZSTANDARD)
+  	set(SRC_LIST ${SRC_LIST}
+		../../zstd/zstd.c
+	)
+	set(ZSTD_DEFINITION BASISD_SUPPORT_KTX2_ZSTD=1)
+  else()
+  	set(ZSTD_DEFINITION BASISD_SUPPORT_KTX2_ZSTD=0)
+  endif()
+
+  add_executable(basis_encoder.js ${SRC_LIST})
+
+  #target_compile_definitions(basis_encoder.js PRIVATE NDEBUG BASISD_SUPPORT_UASTC=1 BASISD_SUPPORT_BC7=1 BASISD_SUPPORT_ATC=0 BASISD_SUPPORT_ASTC_HIGHER_OPAQUE_QUALITY=0 BASISD_SUPPORT_PVRTC2=0 BASISD_SUPPORT_FXT1=0 BASISD_SUPPORT_ETC2_EAC_RG11=0 BASISU_SUPPORT_ENCODING=1 BASISU_SUPPORT_SSE=0 ${ZSTD_DEFINITION} )
+  #target_compile_options(basis_encoder.js PRIVATE -fno-strict-aliasing -O3)
+  
+  #target_compile_definitions(basis_encoder.js PRIVATE DEBUG BASISD_SUPPORT_UASTC=1 BASISD_SUPPORT_BC7=1 BASISD_SUPPORT_ATC=0 BASISD_SUPPORT_ASTC_HIGHER_OPAQUE_QUALITY=0 BASISD_SUPPORT_PVRTC2=0 BASISD_SUPPORT_FXT1=0 BASISD_SUPPORT_ETC2_EAC_RG11=0 BASISU_SUPPORT_ENCODING=1 BASISU_SUPPORT_SSE=0 ${ZSTD_DEFINITION} )
+  #target_compile_options(basis_encoder.js PRIVATE -fno-strict-aliasing -g -O1 -fsanitize=undefined -fsanitize=address)
+  
+  target_compile_definitions(basis_encoder.js PRIVATE NDEBUG BASISD_SUPPORT_UASTC=1 BASISD_SUPPORT_BC7=1 BASISD_SUPPORT_ATC=0 BASISD_SUPPORT_ASTC_HIGHER_OPAQUE_QUALITY=0 BASISD_SUPPORT_PVRTC2=0 BASISD_SUPPORT_FXT1=0 BASISD_SUPPORT_ETC2_EAC_RG11=0 BASISU_SUPPORT_ENCODING=1 BASISU_SUPPORT_SSE=0 ${ZSTD_DEFINITION} )
+  
+  target_compile_options(basis_encoder.js PRIVATE -fno-strict-aliasing -O3)
+  
+  target_include_directories(basis_encoder.js PRIVATE ../../transcoder)
+
+  set_target_properties(basis_encoder.js PROPERTIES
+      OUTPUT_NAME "basis_encoder"
+      SUFFIX ".js"
+	  
+      #LINK_FLAGS "--bind -s ALLOW_MEMORY_GROWTH=1 -O3 -s ASSERTIONS=0 -s MALLOC=emmalloc -s MODULARIZE=1 -s EXPORT_NAME=BASIS ")
+	  
+	  #LINK_FLAGS "--bind -s INITIAL_MEMORY=299958272 -g -s DEMANGLE_SUPPORT=1 -s ALLOW_MEMORY_GROWTH=1 -O1 -s ASSERTIONS=1 -s MALLOC=emmalloc -s MODULARIZE=1 -s EXPORT_NAME=BASIS -fsanitize=undefined -fsanitize=address")
+	  
+	  # TODO: 300MB is really large - probably not necessary?
+  	  LINK_FLAGS "--bind -s ALLOW_MEMORY_GROWTH=1 -O3 -s ASSERTIONS=0 -s INITIAL_MEMORY=299958272 -s MALLOC=emmalloc -s MODULARIZE=1 -s EXPORT_NAME=BASIS")
+endif()
@@ -0,0 +1,7 @@
+Prebuilt versions of `basis_encoder.js` and `basis_encoder.wasm` are included in the `build/` folder, and are sufficient for local demos. Note the encoder also includes the transcoder. To build the encoder yourself, first install emscripten ([tutorial](https://webassembly.org/getting-started/developers-guide/)) and cmake ([download](https://cmake.org/download/)). Then run:
+
+```shell
+cd webgl/encoder/build/
+emcmake cmake ../
+make
+```