Assert on failure to compile glsl and unimplemented shader instrs.

src/xenia/gpu/gl4/gl4_shader_translator.cc

@@ -1390,6 +1390,7 @@ bool GL4ShaderTranslator::TranslateALU(const instr_alu_t* alu, int sync) {
         return false;
       }
     } else {
+      assert_always();
       Append("  // <UNIMPLEMENTED>\n");
     }
   }
@@ -1440,6 +1441,7 @@ bool GL4ShaderTranslator::TranslateALU(const instr_alu_t* alu, int sync) {
         return false;
       }
     } else {
+      // assert_always();
       Append("  // <UNIMPLEMENTED>\n");
     }
   }