Add more flexible SpirvToolsDisassemble interface to allow specifying spv_target_env for disassembly output. (KhronosGroup#2406)

Improve documentation on existing SpirvToolsDisassemble interface.
Fix cmake build scripts to account for `spirv-tools` external when -DENABLE_OPT=ON

Author: phniix

SPIRV/SpvTools.cpp

@@ -44,7 +44,6 @@
 
 #include "SpvTools.h"
 #include "spirv-tools/optimizer.hpp"
-#include "spirv-tools/libspirv.h"
 
 namespace glslang {
 
@@ -114,11 +113,18 @@ void OptimizerMesssageConsumer(spv_message_level_t level, const char *source,
     out << std::endl;
 }
 
-// Use the SPIRV-Tools disassembler to print SPIR-V.
+// Use the SPIRV-Tools disassembler to print SPIR-V using a SPV_ENV_UNIVERSAL_1_3 environment.
 void SpirvToolsDisassemble(std::ostream& out, const std::vector<unsigned int>& spirv)
+{
+    SpirvToolsDisassemble(out, spirv, SPV_ENV_UNIVERSAL_1_3);
+}
+
+// Use the SPIRV-Tools disassembler to print SPIR-V with a provided SPIR-V environment.
+void SpirvToolsDisassemble(std::ostream& out, const std::vector<unsigned int>& spirv,
+                           spv_target_env requested_context)
 {
     // disassemble
-    spv_context context = spvContextCreate(SPV_ENV_UNIVERSAL_1_3);
+    spv_context context = spvContextCreate(requested_context);
     spv_text text;
     spv_diagnostic diagnostic = nullptr;
     spvBinaryToText(context, spirv.data(), spirv.size(),

SPIRV/SpvTools.h

@@ -44,6 +44,7 @@
 #ifdef ENABLE_OPT
 #include <vector>
 #include <ostream>
+#include "spirv-tools/libspirv.h"
 #endif
 
 #include "glslang/MachineIndependent/localintermediate.h"
@@ -64,9 +65,13 @@ struct SpvOptions {
 
 #ifdef ENABLE_OPT
 
-// Use the SPIRV-Tools disassembler to print SPIR-V.
+// Use the SPIRV-Tools disassembler to print SPIR-V using a SPV_ENV_UNIVERSAL_1_3 environment.
 void SpirvToolsDisassemble(std::ostream& out, const std::vector<unsigned int>& spirv);
 
+// Use the SPIRV-Tools disassembler to print SPIR-V with a provided SPIR-V environment.
+void SpirvToolsDisassemble(std::ostream& out, const std::vector<unsigned int>& spirv,
+                           spv_target_env requested_context);
+
 // Apply the SPIRV-Tools validator to generated SPIR-V.
 void SpirvToolsValidate(const glslang::TIntermediate& intermediate, std::vector<unsigned int>& spirv,
                         spv::SpvBuildLogger*, bool prelegalization);

StandAlone/CMakeLists.txt

@@ -70,6 +70,12 @@ target_include_directories(glslangValidator PUBLIC
     $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../External>
     $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/External>)
 
+if(ENABLE_OPT)
+target_include_directories(glslangValidator PUBLIC
+    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../External/spirv-tools/include>
+    $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/External/spirv-tools/include>)
+endif()
+
 if(ENABLE_SPVREMAPPER)
     set(REMAPPER_SOURCES spirv-remap.cpp)
     add_executable(spirv-remap ${REMAPPER_SOURCES})

gtests/CMakeLists.txt

@@ -83,6 +83,12 @@ if(BUILD_TESTING)
                                    ${gmock_SOURCE_DIR}/include
                                    ${gtest_SOURCE_DIR}/include)
 
+        if(ENABLE_OPT)
+            target_include_directories(glslangtests PUBLIC
+                $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../External/spirv-tools/include>
+                $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/External/spirv-tools/include>)
+        endif()
+
         set(LIBRARIES
             glslang OSDependent OGLCompiler glslang
             SPIRV glslang-default-resource-limits)