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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/writer/glsl/test_helper.h"
namespace tint {
namespace writer {
namespace glsl {
namespace {
using GlslGeneratorImplTest = TestHelper;
TEST_F(GlslGeneratorImplTest, Generate) {
Func("my_func", ast::VariableList{}, ty.void_(), ast::StatementList{},
ast::DecorationList{});
GeneratorImpl& gen = Build();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(), R"(#version 310 es
precision mediump float;
void my_func() {
}
)");
}
struct GlslBuiltinData {
ast::Builtin builtin;
const char* attribute_name;
};
inline std::ostream& operator<<(std::ostream& out, GlslBuiltinData data) {
out << data.builtin;
return out;
}
using GlslBuiltinConversionTest = TestParamHelper<GlslBuiltinData>;
TEST_P(GlslBuiltinConversionTest, Emit) {
auto params = GetParam();
GeneratorImpl& gen = Build();
EXPECT_EQ(gen.builtin_to_string(params.builtin, ast::PipelineStage::kVertex),
std::string(params.attribute_name));
}
INSTANTIATE_TEST_SUITE_P(
GlslGeneratorImplTest,
GlslBuiltinConversionTest,
testing::Values(
GlslBuiltinData{ast::Builtin::kPosition, "gl_Position"},
GlslBuiltinData{ast::Builtin::kVertexIndex, "gl_VertexID"},
GlslBuiltinData{ast::Builtin::kInstanceIndex, "gl_InstanceID"},
GlslBuiltinData{ast::Builtin::kFrontFacing, "gl_FrontFacing"},
GlslBuiltinData{ast::Builtin::kFragDepth, "gl_FragDepth"},
GlslBuiltinData{ast::Builtin::kLocalInvocationId,
"gl_LocalInvocationID"},
GlslBuiltinData{ast::Builtin::kLocalInvocationIndex,
"gl_LocalInvocationIndex"},
GlslBuiltinData{ast::Builtin::kGlobalInvocationId,
"gl_GlobalInvocationID"},
GlslBuiltinData{ast::Builtin::kWorkgroupId, "gl_WorkGroupID"},
GlslBuiltinData{ast::Builtin::kSampleIndex, "gl_SampleID"},
GlslBuiltinData{ast::Builtin::kSampleMask, "gl_SampleMask"}));
} // namespace
} // namespace glsl
} // namespace writer
} // namespace tint