Standalone: Fix #1814: Check that linkage was specified for reflection.

StandAlone/StandAlone.cpp

@@ -772,8 +772,17 @@ void ProcessArguments(std::vector<std::unique_ptr<glslang::TWorkItem>>& workItem
         Error("must provide -S when --stdin is given");
 
     // Make sure that -E is not specified alongside linking (which includes SPV generation)
-    if ((Options & EOptionOutputPreprocessed) && (Options & EOptionLinkProgram))
-        Error("can't use -E when linking is selected");
+    // Or things that require linking
+    if (Options & EOptionOutputPreprocessed) {
+        if (Options & EOptionLinkProgram)
+            Error("can't use -E when linking is selected");
+        if (Options & EOptionDumpReflection)
+            Error("reflection requires linking, which can't be used when -E when is selected");
+    }
+
+    // reflection requires linking
+    if ((Options & EOptionDumpReflection) && !(Options & EOptionLinkProgram))
+        Error("reflection requires -l for linking");
 
     // -o or -x makes no sense if there is no target binary
     if (binaryFileName && (Options & EOptionSpv) == 0)
@@ -1512,7 +1521,7 @@ void usage()
            "  -l          link all input files together to form a single module\n"
            "  -m          memory leak mode\n"
            "  -o <file>   save binary to <file>, requires a binary option (e.g., -V)\n"
-           "  -q          dump reflection query database\n"
+           "  -q          dump reflection query database; requires -l for linking\n"
            "  -r | --relaxed-errors"
            "              relaxed GLSL semantic error-checking mode\n"
            "  -s          silence syntax and semantic error reporting\n"

glslang/MachineIndependent/ShaderLang.cpp

@@ -1984,7 +1984,7 @@ const char* TProgram::getInfoDebugLog()
 
 bool TProgram::buildReflection(int opts)
 {
-    if (! linked || reflection)
+    if (! linked || reflection != nullptr)
         return false;
 
     int firstStage = EShLangVertex, lastStage = EShLangFragment;
@@ -2014,9 +2014,8 @@ bool TProgram::buildReflection(int opts)
     return true;
 }
 
-unsigned TProgram::getLocalSize(int dim) const                      { return reflection->getLocalSize(dim); }
-int TProgram::getReflectionIndex(const char* name) const            { return reflection->getIndex(name); }
-
+unsigned TProgram::getLocalSize(int dim) const                        { return reflection->getLocalSize(dim); }
+int TProgram::getReflectionIndex(const char* name) const              { return reflection->getIndex(name); }
 int TProgram::getNumUniformVariables() const                          { return reflection->getNumUniforms(); }
 const TObjectReflection& TProgram::getUniform(int index) const        { return reflection->getUniform(index); }
 int TProgram::getNumUniformBlocks() const                             { return reflection->getNumUniformBlocks(); }
@@ -2031,8 +2030,7 @@ int TProgram::getNumBufferBlocks() const                              { return r
 const TObjectReflection& TProgram::getBufferBlock(int index) const    { return reflection->getStorageBufferBlock(index); }
 int TProgram::getNumAtomicCounters() const                            { return reflection->getNumAtomicCounters(); }
 const TObjectReflection& TProgram::getAtomicCounter(int index) const  { return reflection->getAtomicCounter(index); }
-
-void TProgram::dumpReflection()                      { reflection->dump(); }
+void TProgram::dumpReflection() { if (reflection != nullptr) reflection->dump(); }
 
 //
 // I/O mapping implementation.

glslang/Public/ShaderLang.h

@@ -737,7 +737,7 @@ public:
     // Reflection Interface
 
     // call first, to do liveness analysis, index mapping, etc.; returns false on failure
-    bool buildReflection(int opts = EShReflectionDefault);    
+    bool buildReflection(int opts = EShReflectionDefault);
 
     unsigned getLocalSize(int dim) const;                  // return dim'th local size
     int getReflectionIndex(const char *name) const;