chromium/third_party/angle/src/tests/compiler_tests/AtomicCounter_test.cpp

//
// Copyright 2017 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// AtomicCounter_test.cpp:
//   Tests for validating ESSL 3.10 section 4.4.6.
//

#include "gtest/gtest.h"

#include "GLSLANG/ShaderLang.h"
#include "angle_gl.h"
#include "gtest/gtest.h"
#include "tests/test_utils/ShaderCompileTreeTest.h"

usingnamespacesh;

class AtomicCounterTest : public ShaderCompileTreeTest
{ … };

// Test that layout qualifiers described in ESSL 3.10 section 4.4.6 can be successfully compiled,
// and the values of offset are properly assigned to counter variables.
TEST_F(AtomicCounterTest, BasicAtomicCounterDeclaration)
{ … }

// Test that ESSL 3.00 doesn't support atomic_uint.
TEST_F(AtomicCounterTest, InvalidShaderVersion)
{ … }

// Test that any qualifier other than uniform leads to compile-time error.
TEST_F(AtomicCounterTest, InvalidQualifier)
{ … }

// Test that uniform must be specified for declaration.
TEST_F(AtomicCounterTest, UniformMustSpecifiedForDeclaration)
{ … }

// Test that offset overlapping leads to compile-time error(ESSL 3.10 section 4.4.6).
TEST_F(AtomicCounterTest, BindingOffsetOverlapping)
{ … }

// Test offset inheritance for multiple variables in one same declaration.
TEST_F(AtomicCounterTest, MultipleVariablesDeclaration)
{ … }

// Test that subsequent declarations inherit the globally specified offset.
TEST_F(AtomicCounterTest, GlobalBindingOffsetOverlapping)
{ … }

// The spec only demands offset unique and non-overlapping. So this should be allowed.
TEST_F(AtomicCounterTest, DeclarationSequenceWithDecrementalOffsetsSpecified)
{ … }

// Test that image format qualifiers are not allowed for atomic counters.
TEST_F(AtomicCounterTest, ImageFormatMustNotSpecified)
{ … }

// Test that global layout qualifiers must not use 'offset'.
TEST_F(AtomicCounterTest, OffsetMustNotSpecifiedForGlobalLayoutQualifier)
{ … }

// Test that offset overlapping leads to compile-time error (ESSL 3.10 section 4.4.6).
// Note that there is some vagueness in the spec when it comes to this test.
TEST_F(AtomicCounterTest, BindingOffsetOverlappingForArrays)
{ … }