Merge pull request #1867 from zoddicus/addWebBuild
Add WASM build target for Web version of glslang
This commit is contained in:
commit
37fc4d27d6
@ -9,6 +9,9 @@ set_property(GLOBAL PROPERTY USE_FOLDERS ON)
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# Adhere to GNU filesystem layout conventions
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# Adhere to GNU filesystem layout conventions
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include(GNUInstallDirs)
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include(GNUInstallDirs)
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# Needed for CMAKE_DEPENDENT_OPTION macro
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include(CMakeDependentOption)
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option(BUILD_SHARED_LIBS "Build Shared Libraries" OFF)
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option(BUILD_SHARED_LIBS "Build Shared Libraries" OFF)
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set(LIB_TYPE STATIC)
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set(LIB_TYPE STATIC)
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@ -28,7 +31,10 @@ option(ENABLE_GLSLANG_BINARIES "Builds glslangValidator and spirv-remap" ON)
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option(ENABLE_NV_EXTENSIONS "Enables support of Nvidia-specific extensions" ON)
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option(ENABLE_NV_EXTENSIONS "Enables support of Nvidia-specific extensions" ON)
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option(ENABLE_HLSL "Enables HLSL input support" ON)
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option(ENABLE_GLSLANG_WEB "Reduces glslang to minumum needed for web use" OFF)
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option(ENABLE_EMSCRIPTEN_SINGLE_FILE "If using emscripten, enables SINGLE_FILE build" OFF)
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CMAKE_DEPENDENT_OPTION(ENABLE_HLSL "Enables HLSL input support" ON "NOT ENABLE_GLSLANG_WEB" OFF)
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option(ENABLE_OPT "Enables spirv-opt capability if present" ON)
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option(ENABLE_OPT "Enables spirv-opt capability if present" ON)
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@ -98,6 +104,32 @@ elseif(${CMAKE_CXX_COMPILER_ID} MATCHES "MSVC")
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add_compile_options(/GR-) # Disable RTTI
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add_compile_options(/GR-) # Disable RTTI
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endif()
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endif()
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if(ENABLE_GLSLANG_WEB)
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if(EMSCRIPTEN)
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add_compile_options(-Os -fno-exceptions)
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add_compile_options("SHELL: -s WASM=1")
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add_compile_options("SHELL: -s WASM_OBJECT_FILES=0")
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add_link_options(-Os)
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add_link_options("SHELL: -s FILESYSTEM=0")
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add_link_options("SHELL: --llvm-lto 1")
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add_link_options("SHELL: --closure 1")
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add_link_options("SHELL: -s ENVIRONMENT=web,worker")
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add_link_options("SHELL: -s ALLOW_MEMORY_GROWTH=1")
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add_link_options("SHELL: -s MODULARIZE=1")
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if(ENABLE_EMSCRIPTEN_SINGLE_FILE)
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add_link_options("SHELL: -s SINGLE_FILE=1")
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endif(ENABLE_EMSCRIPTEN_SINGLE_FILE)
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else()
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if(MSVC)
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add_compile_options(/Os /GR-)
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else()
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add_compile_options(-Os -fno-exceptions)
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add_link_options(-Os)
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endif()
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endif(EMSCRIPTEN)
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endif(ENABLE_GLSLANG_WEB)
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# Request C++11
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# Request C++11
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if(${CMAKE_VERSION} VERSION_LESS 3.1)
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if(${CMAKE_VERSION} VERSION_LESS 3.1)
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# CMake versions before 3.1 do not understand CMAKE_CXX_STANDARD
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# CMake versions before 3.1 do not understand CMAKE_CXX_STANDARD
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16
README.md
16
README.md
@ -163,6 +163,22 @@ bison --defines=MachineIndependent/glslang_tab.cpp.h
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The above command is also available in the bash script at
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The above command is also available in the bash script at
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`glslang/updateGrammar`.
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`glslang/updateGrammar`.
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### WASM for the the Web
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Use the steps in [Build Steps](#build-steps), which following notes/exceptions:
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* `emsdk` needs to be present in your executable search path, *PATH* for
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Bash-like enivironments
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+ Instructions located
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[here](https://emscripten.org/docs/getting_started/downloads.html#sdk-download-and-install)
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* Do not checkout SPIRV-Tools into `External`
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+ Does not work correctly with emscripten out of the box and we don't want it
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in the build anyway. *TBD* Have build ignore SPIRV-Tools for web build
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* Wrap call to `cmake` using `emconfigure` with ENABLE_GLSLANG_WEB=ON:
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+ e.g. For Linux, `emconfigure cmake -DCMAKE_BUILD_TYPE=Release
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-DENABLE_GLSLANG_WEB=ON -DCMAKE_INSTALL_PREFIX="$(pwd)/install" ..`
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* To get a 'true' minimized build, make sure to use `brotli` to compress the .js
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and .wasm files
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Testing
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Testing
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-------
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-------
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@ -122,3 +122,15 @@ if(ENABLE_GLSLANG_INSTALL)
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install(FILES ${file} DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/glslang/${dir})
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install(FILES ${file} DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/glslang/${dir})
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endforeach()
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endforeach()
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endif(ENABLE_GLSLANG_INSTALL)
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endif(ENABLE_GLSLANG_INSTALL)
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if(ENABLE_GLSLANG_WEB)
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add_executable(glslang.js glslang.js.cpp)
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glslang_set_link_args(glslang.js)
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target_link_libraries(glslang.js glslang SPIRV)
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if(EMSCRIPTEN)
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set_target_properties(glslang.js PROPERTIES
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OUTPUT_NAME "glslang"
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SUFFIX ".js"
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LINK_FLAGS "--bind")
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endif(EMSCRIPTEN)
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endif(ENABLE_GLSLANG_WEB)
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286
glslang/glslang.js.cpp
Normal file
286
glslang/glslang.js.cpp
Normal file
@ -0,0 +1,286 @@
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//
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// Copyright (C) 2019 Google, Inc.
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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//
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// Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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//
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// Neither the name of 3Dlabs Inc. Ltd. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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// COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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#include <cstdio>
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#ifdef __EMSCRIPTEN__
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#include <emscripten.h>
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#endif // __EMSCRIPTEN__
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#include <memory>
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#include "../SPIRV/GlslangToSpv.h"
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#include "../SPIRV/doc.h"
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#include "./../glslang/Public/ShaderLang.h"
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const TBuiltInResource DefaultTBuiltInResource = {
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/* .MaxLights = */ 32,
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/* .MaxClipPlanes = */ 6,
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/* .MaxTextureUnits = */ 32,
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/* .MaxTextureCoords = */ 32,
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/* .MaxVertexAttribs = */ 64,
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/* .MaxVertexUniformComponents = */ 4096,
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/* .MaxVaryingFloats = */ 64,
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/* .MaxVertexTextureImageUnits = */ 32,
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/* .MaxCombinedTextureImageUnits = */ 80,
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/* .MaxTextureImageUnits = */ 32,
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/* .MaxFragmentUniformComponents = */ 4096,
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/* .MaxDrawBuffers = */ 32,
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/* .MaxVertexUniformVectors = */ 128,
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/* .MaxVaryingVectors = */ 8,
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/* .MaxFragmentUniformVectors = */ 16,
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/* .MaxVertexOutputVectors = */ 16,
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/* .MaxFragmentInputVectors = */ 15,
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/* .MinProgramTexelOffset = */ -8,
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/* .MaxProgramTexelOffset = */ 7,
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/* .MaxClipDistances = */ 8,
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/* .MaxComputeWorkGroupCountX = */ 65535,
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/* .MaxComputeWorkGroupCountY = */ 65535,
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/* .MaxComputeWorkGroupCountZ = */ 65535,
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/* .MaxComputeWorkGroupSizeX = */ 1024,
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/* .MaxComputeWorkGroupSizeY = */ 1024,
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/* .MaxComputeWorkGroupSizeZ = */ 64,
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/* .MaxComputeUniformComponents = */ 1024,
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/* .MaxComputeTextureImageUnits = */ 16,
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/* .MaxComputeImageUniforms = */ 8,
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/* .MaxComputeAtomicCounters = */ 8,
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/* .MaxComputeAtomicCounterBuffers = */ 1,
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/* .MaxVaryingComponents = */ 60,
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/* .MaxVertexOutputComponents = */ 64,
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/* .MaxGeometryInputComponents = */ 64,
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/* .MaxGeometryOutputComponents = */ 128,
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/* .MaxFragmentInputComponents = */ 128,
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/* .MaxImageUnits = */ 8,
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/* .MaxCombinedImageUnitsAndFragmentOutputs = */ 8,
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/* .MaxCombinedShaderOutputResources = */ 8,
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/* .MaxImageSamples = */ 0,
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/* .MaxVertexImageUniforms = */ 0,
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/* .MaxTessControlImageUniforms = */ 0,
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/* .MaxTessEvaluationImageUniforms = */ 0,
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/* .MaxGeometryImageUniforms = */ 0,
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/* .MaxFragmentImageUniforms = */ 8,
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/* .MaxCombinedImageUniforms = */ 8,
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/* .MaxGeometryTextureImageUnits = */ 16,
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/* .MaxGeometryOutputVertices = */ 256,
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/* .MaxGeometryTotalOutputComponents = */ 1024,
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/* .MaxGeometryUniformComponents = */ 1024,
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/* .MaxGeometryVaryingComponents = */ 64,
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/* .MaxTessControlInputComponents = */ 128,
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/* .MaxTessControlOutputComponents = */ 128,
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/* .MaxTessControlTextureImageUnits = */ 16,
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/* .MaxTessControlUniformComponents = */ 1024,
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/* .MaxTessControlTotalOutputComponents = */ 4096,
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/* .MaxTessEvaluationInputComponents = */ 128,
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/* .MaxTessEvaluationOutputComponents = */ 128,
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/* .MaxTessEvaluationTextureImageUnits = */ 16,
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/* .MaxTessEvaluationUniformComponents = */ 1024,
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/* .MaxTessPatchComponents = */ 120,
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/* .MaxPatchVertices = */ 32,
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/* .MaxTessGenLevel = */ 64,
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/* .MaxViewports = */ 16,
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/* .MaxVertexAtomicCounters = */ 0,
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/* .MaxTessControlAtomicCounters = */ 0,
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/* .MaxTessEvaluationAtomicCounters = */ 0,
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/* .MaxGeometryAtomicCounters = */ 0,
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/* .MaxFragmentAtomicCounters = */ 8,
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/* .MaxCombinedAtomicCounters = */ 8,
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/* .MaxAtomicCounterBindings = */ 1,
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/* .MaxVertexAtomicCounterBuffers = */ 0,
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/* .MaxTessControlAtomicCounterBuffers = */ 0,
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/* .MaxTessEvaluationAtomicCounterBuffers = */ 0,
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/* .MaxGeometryAtomicCounterBuffers = */ 0,
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/* .MaxFragmentAtomicCounterBuffers = */ 1,
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/* .MaxCombinedAtomicCounterBuffers = */ 1,
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/* .MaxAtomicCounterBufferSize = */ 16384,
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/* .MaxTransformFeedbackBuffers = */ 4,
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/* .MaxTransformFeedbackInterleavedComponents = */ 64,
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/* .MaxCullDistances = */ 8,
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/* .MaxCombinedClipAndCullDistances = */ 8,
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/* .MaxSamples = */ 4,
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/* .maxMeshOutputVerticesNV = */ 256,
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/* .maxMeshOutputPrimitivesNV = */ 512,
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/* .maxMeshWorkGroupSizeX_NV = */ 32,
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/* .maxMeshWorkGroupSizeY_NV = */ 1,
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/* .maxMeshWorkGroupSizeZ_NV = */ 1,
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/* .maxTaskWorkGroupSizeX_NV = */ 32,
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/* .maxTaskWorkGroupSizeY_NV = */ 1,
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/* .maxTaskWorkGroupSizeZ_NV = */ 1,
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/* .maxMeshViewCountNV = */ 4,
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/* .limits = */ {
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/* .nonInductiveForLoops = */ 1,
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/* .whileLoops = */ 1,
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/* .doWhileLoops = */ 1,
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/* .generalUniformIndexing = */ 1,
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/* .generalAttributeMatrixVectorIndexing = */ 1,
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/* .generalVaryingIndexing = */ 1,
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/* .generalSamplerIndexing = */ 1,
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/* .generalVariableIndexing = */ 1,
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/* .generalConstantMatrixVectorIndexing = */ 1,
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}};
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/*
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* Takes in a GLSL shader as a string and converts it to SPIR-V in binary form.
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*
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* |glsl| Char array created using create_input_buffer and populated
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* with the shader to be converted.
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* This buffer must be destroyed using destroy_input_buffer.
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* |shader_type| Magic number indicating the type of shader being processed.
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* Legal values are as follows:
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* Vertex = 0
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* Geometry = 3
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* Fragment = 4
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* |spirv| Pointer to an output buffer that will be updated with the
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* resulting SPIR-V shader.
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* This buffer must be destroyed using destroy_output_buffer.
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*
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* |spirv_len| Length of the output binary buffer.
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* |gen_debug| Flag to indicate if debug information should be generated.
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*
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* Return 0 on success, non-0 on failure.
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||||||
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*/
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#ifdef __EMSCRIPTEN__
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EMSCRIPTEN_KEEPALIVE
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#endif // __EMSCRIPTEN__
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int convert_glsl_to_spirv(const char* glsl, int shader_type, unsigned int** spirv, size_t* spirv_len, bool gen_debug)
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{
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int ret_val = 0;
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if (glsl == nullptr || spirv == nullptr) {
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return 1;
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}
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*spirv = nullptr;
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||||||
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if (shader_type != 0 && shader_type != 3 && shader_type != 4) {
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return 2;
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}
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EShLanguage shader_lang = static_cast<EShLanguage>(shader_type);
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glslang::InitializeProcess();
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{
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glslang::TShader shader(shader_lang);
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shader.setStrings(&glsl, 1);
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shader.setEnvInput(glslang::EShSourceGlsl, shader_lang, glslang::EShClientOpenGL, 100);
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||||||
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shader.setEnvClient(glslang::EShClientVulkan, glslang::EShTargetVulkan_1_1);
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shader.setEnvTarget(glslang::EShTargetSpv, glslang::EShTargetSpv_1_3);
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||||||
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shader.parse(&DefaultTBuiltInResource, 100, true, EShMsgDefault);
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||||||
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glslang::TProgram program;
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program.addShader(&shader);
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||||||
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program.link(EShMsgDefault);
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||||||
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||||||
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std::vector<unsigned int> output;
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||||||
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std::string warningsErrors;
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||||||
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glslang::SpvOptions spvOptions;
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||||||
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spvOptions.generateDebugInfo = gen_debug;
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spvOptions.disableOptimizer = false;
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||||||
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spvOptions.optimizeSize = false;
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||||||
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spvOptions.disassemble = false;
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||||||
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spvOptions.validate = false;
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||||||
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glslang::GlslangToSpv(*program.getIntermediate(EShLangFragment), output, nullptr, &spvOptions);
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||||||
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||||||
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*spirv_len = output.size();
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||||||
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*spirv = static_cast<unsigned int*>(malloc(*spirv_len * sizeof(unsigned int)));
|
||||||
|
if (*spirv != nullptr) {
|
||||||
|
memcpy(*spirv, output.data(), *spirv_len);
|
||||||
|
} else {
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||||||
|
ret_val = 3;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
glslang::FinalizeProcess();
|
||||||
|
return ret_val;
|
||||||
|
}
|
||||||
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|
||||||
|
/*
|
||||||
|
* Created a valid input buffer.
|
||||||
|
*
|
||||||
|
* Must be destroyed later using destroy_input_buffer.
|
||||||
|
*/
|
||||||
|
#ifdef __EMSCRIPTEN__
|
||||||
|
EMSCRIPTEN_KEEPALIVE
|
||||||
|
#endif // __EMSCRIPTEN__
|
||||||
|
char* create_input_buffer(int count) { return static_cast<char*>(malloc(count * sizeof(char))); }
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Destroys a buffer created by create_input_buffer
|
||||||
|
*/
|
||||||
|
#ifdef __EMSCRIPTEN__
|
||||||
|
EMSCRIPTEN_KEEPALIVE
|
||||||
|
#endif // __EMSCRIPTEN__
|
||||||
|
void destroy_input_buffer(char* p)
|
||||||
|
{
|
||||||
|
if (p != nullptr)
|
||||||
|
free(p);
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Destroys a buffer created by convert_glsl_to_spirv
|
||||||
|
*/
|
||||||
|
#ifdef __EMSCRIPTEN__
|
||||||
|
EMSCRIPTEN_KEEPALIVE
|
||||||
|
#endif // __EMSCRIPTEN__
|
||||||
|
void destroy_ouput_buffer(unsigned int* p)
|
||||||
|
{
|
||||||
|
if (p != nullptr)
|
||||||
|
free(p);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* For non-Emscripten builds we supply a generic main, so that the glslang.js
|
||||||
|
* build target can generate an executable with a trivial use case instead of
|
||||||
|
* generating a WASM binary. This is done so that there is a target that can be
|
||||||
|
* built and output analyzed using desktop tools, since WASM binaries are
|
||||||
|
* specific to the Emscripten toolchain.
|
||||||
|
*/
|
||||||
|
#ifndef __EMSCRIPTEN__
|
||||||
|
int main() {
|
||||||
|
const char* input_text = R"(#version 310 es
|
||||||
|
|
||||||
|
void main() { })";
|
||||||
|
|
||||||
|
char* input;
|
||||||
|
unsigned int* output;
|
||||||
|
size_t output_len;
|
||||||
|
|
||||||
|
input = create_input_buffer(sizeof(input_text));
|
||||||
|
assert(input != nullptr);
|
||||||
|
memcpy(input, input_text, sizeof(input_text));
|
||||||
|
|
||||||
|
convert_glsl_to_spirv(input, 4, &output, &output_len, false);
|
||||||
|
destroy_ouput_buffer(output);
|
||||||
|
destroy_input_buffer(input);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
#endif // !__EMSCRIPTEN__
|
Loading…
x
Reference in New Issue
Block a user