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glslang
Unverified Commit 8f8f1bc5 by Shahbaz Youssefi
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gn: Optionally disable optimizations and HLSL

To reduce the binary size of ANGLE, a gn override is added (glslang_angle) which: - Controls whether ENABLE_OPT=1 is set - Customizes the build for the Vulkan backend of ANGLE. As a first step, this removes HLSL functionality which together with no optimization shave ~2.5MB off of ANGLE's binary size. Upcoming changes will add a macro for GLSLANG_ANGLE similar to GLSLANG_WEB that will strip features from glslang to support only what ANGLE needs. Signed-off-by: 's avatarShahbaz Youssefi <ShabbyX@gmail.com>
parent 47285099
Showing with 42 additions and 23 deletions
BUILD.gn
......@@ -51,10 +51,13 @@ spirv_tools_dir = glslang_spirv_tools_dir
config("glslang_public") {
include_dirs = [ "." ]
if (!glslang_angle) {
defines = [ "ENABLE_HLSL=1" ]
}
}
source_set("glslang_sources") {
template("glslang_sources_common") {
source_set(target_name) {
public_configs = [ ":glslang_public" ]
sources = [
......@@ -88,21 +91,6 @@ source_set("glslang_sources") {
"SPIRV/spvIR.h",
"glslang/GenericCodeGen/CodeGen.cpp",
"glslang/GenericCodeGen/Link.cpp",
"glslang/HLSL/hlslAttributes.cpp",
"glslang/HLSL/hlslAttributes.h",
"glslang/HLSL/hlslGrammar.cpp",
"glslang/HLSL/hlslGrammar.h",
"glslang/HLSL/hlslOpMap.cpp",
"glslang/HLSL/hlslOpMap.h",
"glslang/HLSL/hlslParseables.cpp",
"glslang/HLSL/hlslParseables.h",
"glslang/HLSL/hlslParseHelper.cpp",
"glslang/HLSL/hlslParseHelper.h",
"glslang/HLSL/hlslScanContext.cpp",
"glslang/HLSL/hlslScanContext.h",
"glslang/HLSL/hlslTokens.h",
"glslang/HLSL/hlslTokenStream.cpp",
"glslang/HLSL/hlslTokenStream.h",
"glslang/Include/BaseTypes.h",
"glslang/Include/Common.h",
"glslang/Include/ConstantUnion.h",
......@@ -164,7 +152,30 @@ source_set("glslang_sources") {
"glslang/Public/ShaderLang.h",
]
defines = [ "ENABLE_OPT=1" ]
if (!glslang_angle) {
sources += [
"glslang/HLSL/hlslAttributes.cpp",
"glslang/HLSL/hlslAttributes.h",
"glslang/HLSL/hlslGrammar.cpp",
"glslang/HLSL/hlslGrammar.h",
"glslang/HLSL/hlslOpMap.cpp",
"glslang/HLSL/hlslOpMap.h",
"glslang/HLSL/hlslParseables.cpp",
"glslang/HLSL/hlslParseables.h",
"glslang/HLSL/hlslParseHelper.cpp",
"glslang/HLSL/hlslParseHelper.h",
"glslang/HLSL/hlslScanContext.cpp",
"glslang/HLSL/hlslScanContext.h",
"glslang/HLSL/hlslTokens.h",
"glslang/HLSL/hlslTokenStream.cpp",
"glslang/HLSL/hlslTokenStream.h",
]
}
defines = []
if (invoker.enable_opt) {
defines += [ "ENABLE_OPT=1" ]
}
if (is_win) {
sources += [ "glslang/OSDependent/Windows/ossource.cpp" ]
......@@ -193,13 +204,24 @@ source_set("glslang_sources") {
]
}
if (invoker.enable_opt) {
deps = [
"${spirv_tools_dir}:spvtools_opt",
"${spirv_tools_dir}:spvtools_val",
"${spirv_tools_dir}:spvtools_val"
]
}
configs -= _configs_to_remove
configs += _configs_to_add
}
}
glslang_sources_common("glslang_sources") {
enable_opt = !glslang_angle
}
glslang_sources_common("glslang_standalone_sources") {
enable_opt = true
}
source_set("glslang_default_resource_limits_sources") {
......@@ -207,9 +229,6 @@ source_set("glslang_default_resource_limits_sources") {
"StandAlone/ResourceLimits.cpp",
"StandAlone/ResourceLimits.h",
]
deps = [
":glslang_sources",
]
public_configs = [ ":glslang_public" ]
configs -= _configs_to_remove
......@@ -227,7 +246,7 @@ executable("glslang_validator") {
defines = [ "ENABLE_OPT=1" ]
deps = [
":glslang_default_resource_limits_sources",
":glslang_sources",
":glslang_standalone_sources",
]
configs -= _configs_to_remove
......@@ -240,7 +259,7 @@ executable("spirv-remap") {
]
defines = [ "ENABLE_OPT=1" ]
deps = [
":glslang_sources",
":glslang_standalone_sources",
]
configs -= _configs_to_remove
......
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