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// Copyright 2021 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#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().AddError(diag::System::Writer, "make the program invalid");
ASSERT_FALSE(IsValid());
auto program = resolver::Resolve(*this);
ASSERT_FALSE(program.IsValid());
auto result = Generate(program, Options{}, "");
EXPECT_NE(result, Success);
EXPECT_EQ(result.Failure().reason.Str(), "error: make the program invalid");
}
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;
}
)");
}
TEST_F(GlslASTPrinterTest, UnsupportedExtension) {
Enable(Source{{12, 34}}, wgsl::Extension::kChromiumInternalRelaxedUniformLayout);
ASTPrinter& gen = Build();
ASSERT_FALSE(gen.Generate());
EXPECT_EQ(
gen.Diagnostics().Str(),
R"(12:34 error: GLSL backend does not support extension 'chromium_internal_relaxed_uniform_layout')");
}
TEST_F(GlslASTPrinterTest, RequiresDirective) {
Require(wgsl::LanguageFeature::kReadonlyAndReadwriteStorageTextures);
ASTPrinter& gen = Build();
ASSERT_TRUE(gen.Generate()) << gen.Diagnostics();
EXPECT_EQ(gen.Result(), R"(#version 310 es
)");
}
} // namespace
} // namespace tint::glsl::writer