1 // Copyright 2021 The Tint Authors.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 #include "src/writer/glsl/test_helper.h"
16
17 namespace tint {
18 namespace writer {
19 namespace glsl {
20 namespace {
21
22 using GlslGeneratorImplTest = TestHelper;
23
TEST_F(GlslGeneratorImplTest,ErrorIfSanitizerNotRun)24 TEST_F(GlslGeneratorImplTest, ErrorIfSanitizerNotRun) {
25 auto program = std::make_unique<Program>(std::move(*this));
26 GeneratorImpl gen(program.get());
27 EXPECT_FALSE(gen.Generate());
28 EXPECT_EQ(
29 gen.error(),
30 "error: GLSL writer requires the transform::Glsl sanitizer to have been "
31 "applied to the input program");
32 }
33
TEST_F(GlslGeneratorImplTest,Generate)34 TEST_F(GlslGeneratorImplTest, Generate) {
35 Func("my_func", ast::VariableList{}, ty.void_(), ast::StatementList{},
36 ast::DecorationList{});
37
38 GeneratorImpl& gen = Build();
39
40 ASSERT_TRUE(gen.Generate()) << gen.error();
41 EXPECT_EQ(gen.result(), R"(#version 310 es
42 precision mediump float;
43
44 void my_func() {
45 }
46 )");
47 }
48
49 struct GlslBuiltinData {
50 ast::Builtin builtin;
51 const char* attribute_name;
52 };
operator <<(std::ostream & out,GlslBuiltinData data)53 inline std::ostream& operator<<(std::ostream& out, GlslBuiltinData data) {
54 out << data.builtin;
55 return out;
56 }
57 using GlslBuiltinConversionTest = TestParamHelper<GlslBuiltinData>;
TEST_P(GlslBuiltinConversionTest,Emit)58 TEST_P(GlslBuiltinConversionTest, Emit) {
59 auto params = GetParam();
60 GeneratorImpl& gen = Build();
61
62 EXPECT_EQ(gen.builtin_to_string(params.builtin, ast::PipelineStage::kVertex),
63 std::string(params.attribute_name));
64 }
65 INSTANTIATE_TEST_SUITE_P(
66 GlslGeneratorImplTest,
67 GlslBuiltinConversionTest,
68 testing::Values(
69 GlslBuiltinData{ast::Builtin::kPosition, "gl_Position"},
70 GlslBuiltinData{ast::Builtin::kVertexIndex, "gl_VertexID"},
71 GlslBuiltinData{ast::Builtin::kInstanceIndex, "gl_InstanceID"},
72 GlslBuiltinData{ast::Builtin::kFrontFacing, "gl_FrontFacing"},
73 GlslBuiltinData{ast::Builtin::kFragDepth, "gl_FragDepth"},
74 GlslBuiltinData{ast::Builtin::kLocalInvocationId,
75 "gl_LocalInvocationID"},
76 GlslBuiltinData{ast::Builtin::kLocalInvocationIndex,
77 "gl_LocalInvocationIndex"},
78 GlslBuiltinData{ast::Builtin::kGlobalInvocationId,
79 "gl_GlobalInvocationID"},
80 GlslBuiltinData{ast::Builtin::kWorkgroupId, "gl_WorkGroupID"},
81 GlslBuiltinData{ast::Builtin::kSampleIndex, "gl_SampleID"},
82 GlslBuiltinData{ast::Builtin::kSampleMask, "gl_SampleMask"}));
83
84 } // namespace
85 } // namespace glsl
86 } // namespace writer
87 } // namespace tint
88