Vulkan: All builtins of gl_out needs to be considered as active

src/libANGLE/VaryingPacking.cpp

@@ -845,6 +845,11 @@ bool VaryingPacking::collectAndPackUserVaryings(gl::InfoLog &infoLog,
         if (isActiveBuiltInInput)
         {
             mActiveOutputBuiltIns[ref.frontShaderStage].push_back(input->name);
+            // Keep track of members of builtins, such as gl_out[].gl_Position, too.
+            for (sh::ShaderVariable field : input->fields)
+            {
+                mActiveOutputBuiltIns[ref.frontShaderStage].push_back(field.name);
+            }
         }
 
         // Only pack statically used varyings that have a matched input or output, plus special

src/tests/deqp_support/deqp_gles31_test_expectations.txt

@@ -184,9 +184,6 @@
 // Geometry shader support:
 5430 VULKAN : dEQP-GLES31.functional.geometry_shading.query.primitives_generated_* = FAIL
 
-// Tessellation shader support:
-5557 VULKAN : dEQP-GLES31.functional.tessellation.shader_input_output.gl_position_tcs_to_tes = FAIL
-
 ////
 //// AMD Vulkan expectations
 ////