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26e0312de2
This enables the backends to emit overridable constants that had no ID specified in the attribute. Bug: tint:755 Change-Id: I86587205e065715257f546b546e792a5262562e8 Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/50842 Commit-Queue: James Price <jrprice@google.com> Reviewed-by: Ben Clayton <bclayton@google.com>
100 lines
3.2 KiB
C++
100 lines
3.2 KiB
C++
// Copyright 2020 The Tint Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "src/ast/override_decoration.h"
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#include "src/writer/hlsl/test_helper.h"
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namespace tint {
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namespace writer {
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namespace hlsl {
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namespace {
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using HlslGeneratorImplTest_ModuleConstant = TestHelper;
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TEST_F(HlslGeneratorImplTest_ModuleConstant, Emit_ModuleConstant) {
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auto* var = Const("pos", ty.array<f32, 3>(), array<f32, 3>(1.f, 2.f, 3.f));
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WrapInFunction(Decl(var));
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GeneratorImpl& gen = Build();
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ASSERT_TRUE(gen.EmitProgramConstVariable(out, var)) << gen.error();
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EXPECT_EQ(result(), "static const float pos[3] = {1.0f, 2.0f, 3.0f};\n");
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}
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TEST_F(HlslGeneratorImplTest_ModuleConstant, Emit_SpecConstant) {
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auto* var = GlobalConst("pos", ty.f32(), Expr(3.0f),
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ast::DecorationList{
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create<ast::OverrideDecoration>(23),
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});
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GeneratorImpl& gen = Build();
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ASSERT_TRUE(gen.EmitProgramConstVariable(out, var)) << gen.error();
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EXPECT_EQ(result(), R"(#ifndef WGSL_SPEC_CONSTANT_23
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#define WGSL_SPEC_CONSTANT_23 3.0f
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#endif
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static const float pos = WGSL_SPEC_CONSTANT_23;
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#undef WGSL_SPEC_CONSTANT_23
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)");
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}
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TEST_F(HlslGeneratorImplTest_ModuleConstant, Emit_SpecConstant_NoConstructor) {
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auto* var = GlobalConst("pos", ty.f32(), nullptr,
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ast::DecorationList{
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create<ast::OverrideDecoration>(23),
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});
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GeneratorImpl& gen = Build();
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ASSERT_TRUE(gen.EmitProgramConstVariable(out, var)) << gen.error();
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EXPECT_EQ(result(), R"(#ifndef WGSL_SPEC_CONSTANT_23
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#error spec constant required for constant id 23
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#endif
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static const float pos = WGSL_SPEC_CONSTANT_23;
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#undef WGSL_SPEC_CONSTANT_23
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)");
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}
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TEST_F(HlslGeneratorImplTest_ModuleConstant, Emit_SpecConstant_NoId) {
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auto* a = GlobalConst("a", ty.f32(), Expr(3.0f),
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ast::DecorationList{
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create<ast::OverrideDecoration>(0),
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});
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auto* b = GlobalConst("b", ty.f32(), Expr(2.0f),
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ast::DecorationList{
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create<ast::OverrideDecoration>(),
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});
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GeneratorImpl& gen = Build();
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ASSERT_TRUE(gen.EmitProgramConstVariable(out, a)) << gen.error();
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ASSERT_TRUE(gen.EmitProgramConstVariable(out, b)) << gen.error();
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EXPECT_EQ(result(), R"(#ifndef WGSL_SPEC_CONSTANT_0
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#define WGSL_SPEC_CONSTANT_0 3.0f
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#endif
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static const float a = WGSL_SPEC_CONSTANT_0;
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#undef WGSL_SPEC_CONSTANT_0
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#ifndef WGSL_SPEC_CONSTANT_1
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#define WGSL_SPEC_CONSTANT_1 2.0f
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#endif
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static const float b = WGSL_SPEC_CONSTANT_1;
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#undef WGSL_SPEC_CONSTANT_1
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)");
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}
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} // namespace
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} // namespace hlsl
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} // namespace writer
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} // namespace tint
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