webgl/encoder/CMakeLists.txt

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_global_selector_palette_helpers.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_astc_decomp.cpp                     
	../../encoder/basisu_uastc_enc.cpp                       
	../../encoder/basisu_bc7enc.cpp
	../../encoder/basisu_kernels_sse.cpp
	../../encoder/lodepng.cpp                                
	../../encoder/apg_bmp.c                                  
	../../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()