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Use GLSLANG_ANGLE to strip features to what ANGLE requires

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This change strips a few features similar to GLSLANG_WEB but doesn't
remove every detail like the latter.  It also hardcodes profile/version
to core/450.

In particular, TBuiltIns::initialize is specialized to remove most of
what is not supported or won't be supported by ANGLE.  The result of
this function is parsed with TParseContext::parseShaderStrings which is
a performance bottleneck.

This change shaves about 300KB off of ANGLE's binary size and reduces
the cost of SetupBuiltinSymbolTable to nearly a sixth.

Signed-off-by: Shahbaz Youssefi <ShabbyX@gmail.com>
This commit is contained in:
Shahbaz Youssefi 2020-07-03 15:42:53 -04:00
parent f5ed7a69d5
commit 8c49d15fbf
No known key found for this signature in database
GPG key ID: C6149357EC6727E0
17 changed files with 215 additions and 103 deletions
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4
glslang/MachineIndependent/intermOut.cpp
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@ -36,7 +36,7 @@
// POSSIBILITY OF SUCH DAMAGE.
//
#ifndef GLSLANG_WEB
#if !defined(GLSLANG_WEB) && !defined(GLSLANG_ANGLE)
#include "localintermediate.h"
#include "../Include/InfoSink.h"
@ -1562,4 +1562,4 @@ void TIntermediate::output(TInfoSink& infoSink, bool tree)
} // end namespace glslang
#endif // not GLSLANG_WEB
#endif // !GLSLANG_WEB && !GLSLANG_ANGLE