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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/lang/glsl/writer/ast_printer/helper_test.h"
#include "gmock/gmock.h"
namespace tint::glsl::writer {
namespace {
using GlslASTPrinterTest = TestHelper;
TEST_F(GlslASTPrinterTest, InvalidProgram) {
Diagnostics().add_error(diag::System::Writer, "make the program invalid");
ASSERT_FALSE(IsValid());
auto program = std::make_unique<Program>(resolver::Resolve(*this));
ASSERT_FALSE(program->IsValid());
auto result = Generate(program.get(), Options{}, "");
EXPECT_FALSE(result);
EXPECT_EQ(result.Failure(), "input program is not valid");
}
TEST_F(GlslASTPrinterTest, Generate) {
Func("my_func", tint::Empty, ty.void_(), tint::Empty);
ASTPrinter& gen = Build();
gen.Generate();
EXPECT_THAT(gen.Diagnostics(), testing::IsEmpty());
EXPECT_EQ(gen.Result(), R"(#version 310 es
void my_func() {
}
)");
}
TEST_F(GlslASTPrinterTest, GenerateDesktop) {
Func("my_func", tint::Empty, ty.void_(), tint::Empty);
ASTPrinter& 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(GlslASTPrinterTest, GenerateSampleIndexES) {
GlobalVar("gl_SampleID", ty.i32(),
Vector{
Builtin(core::BuiltinValue::kSampleIndex),
Disable(ast::DisabledValidation::kIgnoreAddressSpace),
},
core::AddressSpace::kIn);
Func("my_func", tint::Empty, ty.i32(),
Vector{
Return(Expr("gl_SampleID")),
});
ASTPrinter& 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(GlslASTPrinterTest, GenerateSampleIndexDesktop) {
GlobalVar("gl_SampleID", ty.i32(),
Vector{
Builtin(core::BuiltinValue::kSampleIndex),
Disable(ast::DisabledValidation::kIgnoreAddressSpace),
},
core::AddressSpace::kIn);
Func("my_func", tint::Empty, ty.i32(),
Vector{
Return(Expr("gl_SampleID")),
});
ASTPrinter& 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::glsl::writer