Print outputs when printing variables in shader translator

samples/shader_translator/shader_translator.cpp

@@ -263,7 +263,7 @@ void usage()
         "Where: filename : filename ending in .frag or .vert\n"
         "       -i       : print intermediate tree\n"
         "       -o       : print translated code\n"
-        "       -u       : print active attribs, uniforms, and varyings\n"
+        "       -u       : print active attribs, uniforms, varyings and program outputs\n"
         "       -l       : unroll for-loops with integer indices\n"
         "       -e       : emulate certain built-in functions (workaround for driver bugs)\n"
         "       -t       : enforce experimental timing restrictions\n"
@@ -390,7 +390,8 @@ static void PrintActiveVariables(ShHandle compiler)
     const std::vector<sh::Uniform> *uniforms = ShGetUniforms(compiler);
     const std::vector<sh::Varying> *varyings = ShGetVaryings(compiler);
     const std::vector<sh::Attribute> *attributes = ShGetAttributes(compiler);
-    for (size_t varCategory = 0; varCategory < 3; ++varCategory)
+    const std::vector<sh::Attribute> *outputs = ShGetOutputVariables(compiler);
+    for (size_t varCategory = 0; varCategory < 4; ++varCategory)
     {
         size_t numVars = 0;
         std::string varCategoryName;
@@ -404,11 +405,17 @@ static void PrintActiveVariables(ShHandle compiler)
             numVars = varyings->size();
             varCategoryName = "varying";
         }
-        else
+        else if (varCategory == 2)
         {
             numVars = attributes->size();
             varCategoryName = "attribute";
         }
+        else
+        {
+            numVars         = outputs->size();
+            varCategoryName = "output";
+        }
+
         for (size_t i = 0; i < numVars; ++i)
         {
             const sh::ShaderVariable *var;
@@ -416,8 +423,11 @@ static void PrintActiveVariables(ShHandle compiler)
                 var = &((*uniforms)[i]);
             else if (varCategory == 1)
                 var = &((*varyings)[i]);
-            else
+            else if (varCategory == 2)
                 var = &((*attributes)[i]);
+            else
+                var = &((*outputs)[i]);
+
             PrintVariable(varCategoryName, i, *var);
         }
         printf("\n");