Externals: Update glslang to 16.0.0 and allow using system glslang

CMakeLists.txt

@@ -651,7 +651,7 @@ dolphin_find_optional_system_library_pkgconfig(FMT
 
 add_subdirectory(Externals/imgui)
 add_subdirectory(Externals/implot)
-add_subdirectory(Externals/glslang)
+dolphin_find_optional_system_library(glslang Externals/glslang 15.0)
 # SPIRV-Cross is used on Windows for GLSL to HLSL conversion for the Direct3D 11 and Direct3D 12
 # video backends, and on Apple devices for the Metal video backend.
 if(WIN32 OR APPLE)

Externals/glslang/CMakeLists.txt

@@ -1,7 +1,6 @@
 set(ENABLE_PCH OFF)
 set(BUILD_EXTERNAL OFF)
 set(SKIP_GLSLANG_INSTALL ON)
-set(ENABLE_SPVREMAPPER OFF)
 set(ENABLE_GLSLANG_BINARIES OFF)
 set(ENABLE_HLSL OFF)
 set(ENABLE_OPT OFF)
@@ -10,5 +9,13 @@ set(ENABLE_EXCEPTIONS OFF)
 add_subdirectory(glslang)
 
 if (TARGET glslang)
+  target_include_directories(glslang
+  # Silence warnings on glslang by flagging it as a system include
+  SYSTEM PUBLIC
+    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/glslang>
+    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/glslang/Public>
+  PUBLIC
+    "${CMAKE_CURRENT_SOURCE_DIR}"
+  )
   dolphin_disable_warnings(glslang)
 endif()

Externals/glslang/exports.props

@@ -2,6 +2,7 @@
 <Project>
   <ItemDefinitionGroup>
     <ClCompile>
+      <AdditionalIncludeDirectories>$(ExternalsDir)glslang;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalIncludeDirectories>$(ExternalsDir)glslang\glslang;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalIncludeDirectories>$(ExternalsDir)glslang\glslang\glslang;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalIncludeDirectories>$(ExternalsDir)glslang\glslang\glslang\Public;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>

Source/Core/VideoBackends/D3DCommon/CMakeLists.txt

@@ -12,15 +12,8 @@ PUBLIC
   common
   videocommon
   spirv_cross
-)
-
-target_include_directories(videod3dcommon
-SYSTEM PUBLIC
-  ${CMAKE_SOURCE_DIR}/Externals/glslang/glslang/Public
-SYSTEM PRIVATE
-  ${CMAKE_SOURCE_DIR}/Externals/glslang/StandAlone
-  ${CMAKE_SOURCE_DIR}/Externals/glslang/SPIRV
-  ${CMAKE_SOURCE_DIR}/Externals/glslang
+PRIVATE
+  glslang::glslang
 )
 
 if(MSVC)

Source/Core/VideoBackends/D3DCommon/Shader.cpp

@@ -8,8 +8,8 @@
 #include <string_view>
 
 #include <fmt/format.h>
+#include <glslang/SPIRV/disassemble.h>
 #include <wrl/client.h>
-#include "disassemble.h"
 #include "spirv_hlsl.hpp"
 
 #include "Common/Assert.h"

Source/Core/VideoBackends/Metal/CMakeLists.txt

@@ -35,6 +35,7 @@ PUBLIC
   videocommon
 PRIVATE
   spirv_cross
+  glslang::glslang
   ${FOUNDATION_LIBRARY}
   ${METAL_LIBRARY}
   ${QUARTZCORE_LIBRARY}

Source/Core/VideoBackends/Vulkan/CMakeLists.txt

@@ -44,7 +44,7 @@ PUBLIC
 
 PRIVATE
   # Link against glslang, the other necessary libraries are referenced by the executable.
-  glslang
+  glslang::glslang
   xxhash::xxhash
 )
 

Source/Core/VideoCommon/CMakeLists.txt

@@ -224,7 +224,7 @@ PRIVATE
   xxhash::xxhash
   imgui
   implot
-  glslang
+  glslang::glslang
   tinygltf
 )
 
@@ -267,16 +267,6 @@ if(FFmpeg_FOUND)
   endif()
 endif()
 
-# Silence warnings on glslang by flagging it as a system include
-target_include_directories(videocommon
-SYSTEM PUBLIC
-  ${CMAKE_SOURCE_DIR}/Externals/glslang/glslang/glslang/Public
-SYSTEM PRIVATE
-  ${CMAKE_SOURCE_DIR}/Externals/glslang/glslang/glslang
-  ${CMAKE_SOURCE_DIR}/Externals/glslang/glslang/SPIRV
-  ${CMAKE_SOURCE_DIR}/Externals/glslang/glslang
-)
-
 if(MSVC)
   # Add precompiled header
   target_link_libraries(videocommon PRIVATE use_pch)

Source/Core/VideoCommon/Spirv.cpp

@@ -3,9 +3,8 @@
 
 #include "VideoCommon/Spirv.h"
 
-// glslang includes
-#include "GlslangToSpv.h"
-#include "disassemble.h"
+#include <glslang/SPIRV/GlslangToSpv.h>
+#include <glslang/SPIRV/disassemble.h>
 
 #include "Common/FileUtil.h"
 #include "Common/Logging/Log.h"

Source/Core/VideoCommon/Spirv.h

@@ -8,7 +8,7 @@
 #include <string_view>
 #include <vector>
 
-#include "ShaderLang.h"
+#include <glslang/Public/ShaderLang.h>
 
 #include "Common/CommonTypes.h"
 #include "VideoCommon/VideoCommon.h"