From f094a0f825abd261109ee566a760089dd4da64e6 Mon Sep 17 00:00:00 2001 From: Ian Romanick Date: Thu, 3 Oct 2013 15:14:35 -0700 Subject: [PATCH] glsl/tests: Verify fragment shader built-ins generated by _mesa_glsl_initialize_variables Checks that the variables generated meet certain criteria. - Fragment shader inputs have an explicit location. - Fragment shader outputs have an explicit location. - Vertex / geometry shader-only varying locations are not used. - Fragment shader uniforms and system values don't have an explicit location. - Fragment shader constants don't have an explicit location and are read-only. - No other kinds of fragment variables exist. It does not verify that an specific variables exist. v2: Use _mesa_varying_slot_in_fs in fragment_builtin.inputs_have_explicit_location. Suggested by Paul. Signed-off-by: Ian Romanick Reviewed-by: Paul Berry --- src/glsl/tests/builtin_variable_test.cpp | 71 ++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) diff --git a/src/glsl/tests/builtin_variable_test.cpp b/src/glsl/tests/builtin_variable_test.cpp index af0ba1e..4dbccdc 100644 --- a/src/glsl/tests/builtin_variable_test.cpp +++ b/src/glsl/tests/builtin_variable_test.cpp @@ -222,3 +222,74 @@ TEST_F(vertex_builtin, no_invalid_variable_modes) { common_builtin::no_invalid_variable_modes(); } + +/********************************************************************/ + +class fragment_builtin : public common_builtin { +public: + fragment_builtin() + : common_builtin(GL_FRAGMENT_SHADER) + { + /* empty */ + } +}; + +TEST_F(fragment_builtin, names_start_with_gl) +{ + common_builtin::names_start_with_gl(); +} + +TEST_F(fragment_builtin, inputs_have_explicit_location) +{ + foreach_list(node, &this->ir) { + ir_variable *const var = ((ir_instruction *) node)->as_variable(); + + if (var->mode != ir_var_shader_in) + continue; + + EXPECT_TRUE(var->explicit_location); + EXPECT_NE(-1, var->location); + EXPECT_GT(VARYING_SLOT_VAR0, var->location); + EXPECT_EQ(0u, var->location_frac); + + /* Several varyings only exist in the vertex / geometry shader. Be sure + * that no inputs with these locations exist. + */ + EXPECT_TRUE(_mesa_varying_slot_in_fs((gl_varying_slot) var->location)); + } +} + +TEST_F(fragment_builtin, outputs_have_explicit_location) +{ + foreach_list(node, &this->ir) { + ir_variable *const var = ((ir_instruction *) node)->as_variable(); + + if (var->mode != ir_var_shader_out) + continue; + + EXPECT_TRUE(var->explicit_location); + EXPECT_NE(-1, var->location); + + /* gl_FragData[] has location FRAG_RESULT_DATA0. Locations beyond that + * are invalid. + */ + EXPECT_GE(FRAG_RESULT_DATA0, var->location); + + EXPECT_EQ(0u, var->location_frac); + } +} + +TEST_F(fragment_builtin, uniforms_and_system_values_dont_have_explicit_location) +{ + common_builtin::uniforms_and_system_values_dont_have_explicit_location(); +} + +TEST_F(fragment_builtin, constants_are_constant) +{ + common_builtin::constants_are_constant(); +} + +TEST_F(fragment_builtin, no_invalid_variable_modes) +{ + common_builtin::no_invalid_variable_modes(); +} -- 2.7.4