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android
ndk-platform-external-shaderc-glslang
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817d0f63
Commit
817d0f63
authored
4 years ago
by
Kai Ninomiya
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update README
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@@ -209,27 +209,29 @@ With no arguments it builds the full grammar, and with a "web" argument,
the web grammar subset (see more about the web subset in the next section).
### Building to WASM for the Web and Node
### Building a standalone JS/WASM library for the Web and Node
Use the steps in
[
Build Steps
](
#build-steps
)
, with the following notes/exceptions:
*
For building the web subset of core glslang:
+
execute
`updateGrammar web`
from the glslang subdirectory
(or if using your own scripts,
`m4`
needs a
`-DGLSLANG_WEB`
argument)
+
set
`-DENABLE_HLSL=OFF -DBUILD_TESTING=OFF -DENABLE_OPT=OFF -DINSTALL_GTEST=OFF`
+
turn on
`-DENABLE_GLSLANG_JS=ON`
+
optionally, for a minimum-size binary, turn on
`-DENABLE_GLSLANG_WEBMIN=ON`
+
optionally, for GLSL compilation error messages, turn on
`-DENABLE_GLSLANG_WEB_DEVEL=ON`
*
`emsdk`
needs to be present in your executable search path,
*PATH*
for
Bash-like environments
+
[
Instructions located
here
](
https://emscripten.org/docs/getting_started/downloads.html#sdk-download-and-install
)
Bash-like environments:
+
[
Instructions located here
](
https://emscripten.org/docs/getting_started/downloads.html#sdk-download-and-install
)
*
Wrap cmake call:
`emcmake cmake`
*
Set
`-DBUILD_TESTING=OFF -DENABLE_OPT=OFF -DINSTALL_GTEST=OFF`
.
*
Set
`-DENABLE_HLSL=OFF`
if HLSL is not needed.
*
For a standalone JS/WASM library, turn on
`-DENABLE_GLSLANG_JS=ON`
.
*
For building a minimum-size web subset of core glslang:
+
turn on
`-DENABLE_GLSLANG_WEBMIN=ON`
(disables HLSL)
+
execute
`updateGrammar web`
from the glslang subdirectory
(or if using your own scripts,
`m4`
needs a
`-DGLSLANG_WEB`
argument)
+
optionally, for GLSL compilation error messages, turn on
`-DENABLE_GLSLANG_WEBMIN_DEVEL=ON`
*
To get a fully minimized build, make sure to use
`brotli`
to compress the .js
and .wasm files
Example:
```
sh
emcmake cmake
-DCMAKE_BUILD_TYPE
=
Release
-DENABLE_GLSLANG_
WEB
=
ON
\
emcmake cmake
-DCMAKE_BUILD_TYPE
=
Release
-DENABLE_GLSLANG_
JS
=
ON
\
-DENABLE_HLSL
=
OFF
-DBUILD_TESTING
=
OFF
-DENABLE_OPT
=
OFF
-DINSTALL_GTEST
=
OFF ..
```
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