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// Copyright 2021 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "src/tint/writer/glsl/test_helper.h"
#include "gmock/gmock.h"
namespace tint::writer::glsl {
namespace {
using GlslGeneratorImplTest = TestHelper;
TEST_F(GlslGeneratorImplTest, InvalidProgram) {
Diagnostics().add_error(diag::System::Writer, "make the program invalid");
ASSERT_FALSE(IsValid());
auto program = std::make_unique<Program>(std::move(*this));
ASSERT_FALSE(program->IsValid());
auto result = Generate(program.get(), Options{}, "");
EXPECT_EQ(result.error, "input program is not valid");
}
TEST_F(GlslGeneratorImplTest, Generate) {
Func("my_func", utils::Empty, ty.void_(), utils::Empty);
GeneratorImpl& gen = Build();
gen.Generate();
EXPECT_THAT(gen.Diagnostics(), testing::IsEmpty());
EXPECT_EQ(gen.result(), R"(#version 310 es
void my_func() {
}
)");
}
TEST_F(GlslGeneratorImplTest, GenerateDesktop) {
Func("my_func", utils::Empty, ty.void_(), utils::Empty);
GeneratorImpl& gen = Build(Version(Version::Standard::kDesktop, 4, 4));
gen.Generate();
EXPECT_THAT(gen.Diagnostics(), testing::IsEmpty());
EXPECT_EQ(gen.result(), R"(#version 440
void my_func() {
}
)");
}
TEST_F(GlslGeneratorImplTest, GenerateSampleIndexES) {
GlobalVar("gl_SampleID", ty.i32(),
utils::Vector{
Builtin(builtin::BuiltinValue::kSampleIndex),
Disable(ast::DisabledValidation::kIgnoreAddressSpace),
},
builtin::AddressSpace::kIn);
Func("my_func", utils::Empty, ty.i32(),
utils::Vector{
Return(Expr("gl_SampleID")),
});
GeneratorImpl& gen = Build(Version(Version::Standard::kES, 3, 1));
gen.Generate();
EXPECT_THAT(gen.Diagnostics(), testing::IsEmpty());
EXPECT_EQ(gen.result(), R"(#version 310 es
#extension GL_OES_sample_variables : require
int my_func() {
return gl_SampleID;
}
)");
}
TEST_F(GlslGeneratorImplTest, GenerateSampleIndexDesktop) {
GlobalVar("gl_SampleID", ty.i32(),
utils::Vector{
Builtin(builtin::BuiltinValue::kSampleIndex),
Disable(ast::DisabledValidation::kIgnoreAddressSpace),
},
builtin::AddressSpace::kIn);
Func("my_func", utils::Empty, ty.i32(),
utils::Vector{
Return(Expr("gl_SampleID")),
});
GeneratorImpl& gen = Build(Version(Version::Standard::kDesktop, 4, 4));
gen.Generate();
EXPECT_THAT(gen.Diagnostics(), testing::IsEmpty());
EXPECT_EQ(gen.result(), R"(#version 440
int my_func() {
return gl_SampleID;
}
)");
}
} // namespace
} // namespace tint::writer::glsl