776 lines
18 KiB
C++
776 lines
18 KiB
C++
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// 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/transform/vertex_pulling_transform.h"
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#include "gtest/gtest.h"
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#include "src/ast/decorated_variable.h"
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#include "src/ast/function.h"
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#include "src/ast/type/array_type.h"
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#include "src/ast/type/f32_type.h"
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#include "src/ast/type/i32_type.h"
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#include "src/ast/type/void_type.h"
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#include "src/type_determiner.h"
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#include "src/validator.h"
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namespace tint {
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namespace ast {
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namespace transform {
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namespace {
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class VertexPullingTransformHelper {
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public:
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VertexPullingTransformHelper() {
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mod_ = std::make_unique<ast::Module>();
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transform_ = std::make_unique<VertexPullingTransform>(&ctx_, mod_.get());
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}
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// Create basic module with an entry point and vertex function
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void InitBasicModule() {
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mod()->AddEntryPoint(std::make_unique<EntryPoint>(PipelineStage::kVertex,
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"main", "vtx_main"));
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mod()->AddFunction(std::make_unique<Function>(
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"vtx_main", VariableList{},
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ctx_.type_mgr().Get(std::make_unique<type::VoidType>())));
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}
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// Set up the transformation, after building the module
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void InitTransform(VertexStateDescriptor vertex_state) {
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EXPECT_TRUE(mod_->IsValid());
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tint::TypeDeterminer td(&ctx_, mod_.get());
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EXPECT_TRUE(td.Determine());
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tint::Validator v;
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EXPECT_TRUE(v.Validate(mod_.get()));
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transform_->SetVertexState(
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std::make_unique<VertexStateDescriptor>(std::move(vertex_state)));
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transform_->SetEntryPoint("main");
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}
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// Inserts a variable which will be converted to vertex pulling
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void AddVertexInputVariable(uint32_t location,
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std::string name,
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type::Type* type) {
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auto var = std::make_unique<DecoratedVariable>(
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std::make_unique<Variable>(name, StorageClass::kInput, type));
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VariableDecorationList decorations;
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decorations.push_back(std::make_unique<LocationDecoration>(location));
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var->set_decorations(std::move(decorations));
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mod_->AddGlobalVariable(std::move(var));
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}
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ast::Module* mod() { return mod_.get(); }
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VertexPullingTransform* transform() { return transform_.get(); }
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private:
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Context ctx_;
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std::unique_ptr<ast::Module> mod_;
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std::unique_ptr<VertexPullingTransform> transform_;
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};
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class VertexPullingTransformTest : public VertexPullingTransformHelper,
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public testing::Test {};
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TEST_F(VertexPullingTransformTest, Error_NoVertexState) {
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EXPECT_FALSE(transform()->Run());
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EXPECT_EQ(transform()->GetError(), "SetVertexState not called");
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}
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TEST_F(VertexPullingTransformTest, Error_NoEntryPoint) {
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transform()->SetVertexState(std::make_unique<VertexStateDescriptor>());
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EXPECT_FALSE(transform()->Run());
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EXPECT_EQ(transform()->GetError(), "Vertex stage entry point not found");
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}
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TEST_F(VertexPullingTransformTest, Error_InvalidEntryPoint) {
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InitBasicModule();
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InitTransform({});
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transform()->SetEntryPoint("_");
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EXPECT_FALSE(transform()->Run());
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EXPECT_EQ(transform()->GetError(), "Vertex stage entry point not found");
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}
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TEST_F(VertexPullingTransformTest, Error_EntryPointWrongStage) {
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InitBasicModule();
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mod()->entry_points()[0]->set_pipeline_stage(PipelineStage::kFragment);
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InitTransform({});
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EXPECT_FALSE(transform()->Run());
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EXPECT_EQ(transform()->GetError(), "Entry point is not for vertex stage");
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}
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TEST_F(VertexPullingTransformTest, BasicModule) {
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InitBasicModule();
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InitTransform({});
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EXPECT_TRUE(transform()->Run());
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}
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TEST_F(VertexPullingTransformTest, OneAttribute) {
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InitBasicModule();
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type::F32Type f32;
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AddVertexInputVariable(0, "var_a", &f32);
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InitTransform({{{4, InputStepMode::kVertex, {{VertexFormat::kF32, 0, 0}}}}});
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EXPECT_TRUE(transform()->Run());
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EXPECT_EQ(R"(Module{
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Variable{
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var_a
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private
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__f32
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}
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DecoratedVariable{
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Decorations{
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BuiltinDecoration{vertex_idx}
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}
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tint_pulling_vertex_index
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in
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__i32
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}
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DecoratedVariable{
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Decorations{
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BindingDecoration{0}
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SetDecoration{0}
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}
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tint_pulling_vertex_buffer_0
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storage_buffer
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__struct_
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}
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EntryPoint{vertex as main = vtx_main}
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Function vtx_main -> __void
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()
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{
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Block{
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VariableDeclStatement{
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Variable{
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tint_pulling_pos
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function
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__i32
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}
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}
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Assignment{
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Identifier{tint_pulling_pos}
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Binary{
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Binary{
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Identifier{tint_pulling_vertex_index}
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multiply
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ScalarConstructor{4}
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}
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add
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ScalarConstructor{0}
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}
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}
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Assignment{
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Identifier{var_a}
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As<__f32>{
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ArrayAccessor{
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MemberAccessor{
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Identifier{tint_pulling_vertex_buffer_0}
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Identifier{data}
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}
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Binary{
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Identifier{tint_pulling_pos}
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divide
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ScalarConstructor{4}
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}
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}
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}
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}
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}
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}
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}
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)",
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mod()->to_str());
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}
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// We expect the transform to use an existing vertex_idx builtin variable if it
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// finds one
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TEST_F(VertexPullingTransformTest, ExistingVertexIndex) {
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InitBasicModule();
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type::F32Type f32;
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AddVertexInputVariable(0, "var_a", &f32);
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type::I32Type i32;
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auto vertex_index_var =
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std::make_unique<DecoratedVariable>(std::make_unique<Variable>(
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"custom_vertex_index", StorageClass::kInput, &i32));
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VariableDecorationList decorations;
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decorations.push_back(
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std::make_unique<BuiltinDecoration>(Builtin::kVertexIdx));
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vertex_index_var->set_decorations(std::move(decorations));
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mod()->AddGlobalVariable(std::move(vertex_index_var));
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InitTransform({{{4, InputStepMode::kVertex, {{VertexFormat::kF32, 0, 0}}}}});
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EXPECT_TRUE(transform()->Run());
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EXPECT_EQ(R"(Module{
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Variable{
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var_a
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private
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__f32
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}
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DecoratedVariable{
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Decorations{
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BuiltinDecoration{vertex_idx}
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}
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custom_vertex_index
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in
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__i32
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}
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DecoratedVariable{
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Decorations{
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BindingDecoration{0}
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SetDecoration{0}
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}
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tint_pulling_vertex_buffer_0
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storage_buffer
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__struct_
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}
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EntryPoint{vertex as main = vtx_main}
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Function vtx_main -> __void
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()
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{
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Block{
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VariableDeclStatement{
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Variable{
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tint_pulling_pos
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function
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__i32
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}
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}
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Assignment{
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Identifier{tint_pulling_pos}
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Binary{
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Binary{
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Identifier{custom_vertex_index}
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multiply
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ScalarConstructor{4}
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}
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add
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ScalarConstructor{0}
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}
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}
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Assignment{
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Identifier{var_a}
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As<__f32>{
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ArrayAccessor{
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MemberAccessor{
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Identifier{tint_pulling_vertex_buffer_0}
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Identifier{data}
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}
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Binary{
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Identifier{tint_pulling_pos}
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divide
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ScalarConstructor{4}
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}
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}
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}
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}
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}
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}
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}
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)",
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mod()->to_str());
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}
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TEST_F(VertexPullingTransformTest, TwoAttributesSameBuffer) {
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InitBasicModule();
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type::F32Type f32;
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AddVertexInputVariable(0, "var_a", &f32);
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type::ArrayType vec4_f32{&f32, 4u};
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AddVertexInputVariable(1, "var_b", &vec4_f32);
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InitTransform(
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{{{16,
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InputStepMode::kVertex,
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{{VertexFormat::kF32, 0, 0}, {VertexFormat::kVec4F32, 0, 1}}}}});
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EXPECT_TRUE(transform()->Run());
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EXPECT_EQ(R"(Module{
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Variable{
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var_a
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private
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__f32
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}
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Variable{
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var_b
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private
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__array__f32_4
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}
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DecoratedVariable{
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Decorations{
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BuiltinDecoration{vertex_idx}
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}
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tint_pulling_vertex_index
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in
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__i32
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}
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DecoratedVariable{
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Decorations{
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BindingDecoration{0}
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SetDecoration{0}
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}
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tint_pulling_vertex_buffer_0
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storage_buffer
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__struct_
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}
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EntryPoint{vertex as main = vtx_main}
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Function vtx_main -> __void
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()
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{
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Block{
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VariableDeclStatement{
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Variable{
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tint_pulling_pos
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function
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__i32
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}
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}
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Assignment{
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Identifier{tint_pulling_pos}
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Binary{
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Binary{
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Identifier{tint_pulling_vertex_index}
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multiply
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ScalarConstructor{16}
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}
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add
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ScalarConstructor{0}
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}
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}
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Assignment{
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Identifier{var_a}
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As<__f32>{
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ArrayAccessor{
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MemberAccessor{
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Identifier{tint_pulling_vertex_buffer_0}
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Identifier{data}
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}
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Binary{
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Identifier{tint_pulling_pos}
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divide
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ScalarConstructor{4}
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}
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}
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}
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}
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Assignment{
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Identifier{tint_pulling_pos}
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Binary{
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Binary{
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Identifier{tint_pulling_vertex_index}
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multiply
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ScalarConstructor{16}
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}
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add
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ScalarConstructor{0}
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}
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}
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Assignment{
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Identifier{var_b}
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TypeConstructor{
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__vec_4__f32
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As<__f32>{
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ArrayAccessor{
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MemberAccessor{
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Identifier{tint_pulling_vertex_buffer_0}
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Identifier{data}
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}
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Binary{
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Binary{
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Identifier{tint_pulling_pos}
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add
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ScalarConstructor{0}
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}
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divide
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ScalarConstructor{4}
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}
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}
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}
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As<__f32>{
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ArrayAccessor{
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MemberAccessor{
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Identifier{tint_pulling_vertex_buffer_0}
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Identifier{data}
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}
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Binary{
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|
|
Binary{
|
||
|
|
Identifier{tint_pulling_pos}
|
||
|
|
add
|
||
|
|
ScalarConstructor{4}
|
||
|
|
}
|
||
|
|
divide
|
||
|
|
ScalarConstructor{4}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
As<__f32>{
|
||
|
|
ArrayAccessor{
|
||
|
|
MemberAccessor{
|
||
|
|
Identifier{tint_pulling_vertex_buffer_0}
|
||
|
|
Identifier{data}
|
||
|
|
}
|
||
|
|
Binary{
|
||
|
|
Binary{
|
||
|
|
Identifier{tint_pulling_pos}
|
||
|
|
add
|
||
|
|
ScalarConstructor{8}
|
||
|
|
}
|
||
|
|
divide
|
||
|
|
ScalarConstructor{4}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
As<__f32>{
|
||
|
|
ArrayAccessor{
|
||
|
|
MemberAccessor{
|
||
|
|
Identifier{tint_pulling_vertex_buffer_0}
|
||
|
|
Identifier{data}
|
||
|
|
}
|
||
|
|
Binary{
|
||
|
|
Binary{
|
||
|
|
Identifier{tint_pulling_pos}
|
||
|
|
add
|
||
|
|
ScalarConstructor{12}
|
||
|
|
}
|
||
|
|
divide
|
||
|
|
ScalarConstructor{4}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
)",
|
||
|
|
mod()->to_str());
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_F(VertexPullingTransformTest, FloatVectorAttributes) {
|
||
|
|
InitBasicModule();
|
||
|
|
|
||
|
|
type::F32Type f32;
|
||
|
|
type::ArrayType vec2_f32{&f32, 2u};
|
||
|
|
AddVertexInputVariable(0, "var_a", &vec2_f32);
|
||
|
|
|
||
|
|
type::ArrayType vec3_f32{&f32, 3u};
|
||
|
|
AddVertexInputVariable(1, "var_b", &vec3_f32);
|
||
|
|
|
||
|
|
type::ArrayType vec4_f32{&f32, 4u};
|
||
|
|
AddVertexInputVariable(2, "var_c", &vec4_f32);
|
||
|
|
|
||
|
|
InitTransform(
|
||
|
|
{{{8, InputStepMode::kVertex, {{VertexFormat::kVec2F32, 0, 0}}},
|
||
|
|
{12, InputStepMode::kVertex, {{VertexFormat::kVec3F32, 0, 1}}},
|
||
|
|
{16, InputStepMode::kVertex, {{VertexFormat::kVec4F32, 0, 2}}}}});
|
||
|
|
|
||
|
|
EXPECT_TRUE(transform()->Run());
|
||
|
|
|
||
|
|
EXPECT_EQ(R"(Module{
|
||
|
|
Variable{
|
||
|
|
var_a
|
||
|
|
private
|
||
|
|
__array__f32_2
|
||
|
|
}
|
||
|
|
Variable{
|
||
|
|
var_b
|
||
|
|
private
|
||
|
|
__array__f32_3
|
||
|
|
}
|
||
|
|
Variable{
|
||
|
|
var_c
|
||
|
|
private
|
||
|
|
__array__f32_4
|
||
|
|
}
|
||
|
|
DecoratedVariable{
|
||
|
|
Decorations{
|
||
|
|
BuiltinDecoration{vertex_idx}
|
||
|
|
}
|
||
|
|
tint_pulling_vertex_index
|
||
|
|
in
|
||
|
|
__i32
|
||
|
|
}
|
||
|
|
DecoratedVariable{
|
||
|
|
Decorations{
|
||
|
|
BindingDecoration{0}
|
||
|
|
SetDecoration{0}
|
||
|
|
}
|
||
|
|
tint_pulling_vertex_buffer_0
|
||
|
|
storage_buffer
|
||
|
|
__struct_
|
||
|
|
}
|
||
|
|
DecoratedVariable{
|
||
|
|
Decorations{
|
||
|
|
BindingDecoration{1}
|
||
|
|
SetDecoration{0}
|
||
|
|
}
|
||
|
|
tint_pulling_vertex_buffer_1
|
||
|
|
storage_buffer
|
||
|
|
__struct_
|
||
|
|
}
|
||
|
|
DecoratedVariable{
|
||
|
|
Decorations{
|
||
|
|
BindingDecoration{2}
|
||
|
|
SetDecoration{0}
|
||
|
|
}
|
||
|
|
tint_pulling_vertex_buffer_2
|
||
|
|
storage_buffer
|
||
|
|
__struct_
|
||
|
|
}
|
||
|
|
EntryPoint{vertex as main = vtx_main}
|
||
|
|
Function vtx_main -> __void
|
||
|
|
()
|
||
|
|
{
|
||
|
|
Block{
|
||
|
|
VariableDeclStatement{
|
||
|
|
Variable{
|
||
|
|
tint_pulling_pos
|
||
|
|
function
|
||
|
|
__i32
|
||
|
|
}
|
||
|
|
}
|
||
|
|
Assignment{
|
||
|
|
Identifier{tint_pulling_pos}
|
||
|
|
Binary{
|
||
|
|
Binary{
|
||
|
|
Identifier{tint_pulling_vertex_index}
|
||
|
|
multiply
|
||
|
|
ScalarConstructor{8}
|
||
|
|
}
|
||
|
|
add
|
||
|
|
ScalarConstructor{0}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
Assignment{
|
||
|
|
Identifier{var_a}
|
||
|
|
TypeConstructor{
|
||
|
|
__vec_2__f32
|
||
|
|
As<__f32>{
|
||
|
|
ArrayAccessor{
|
||
|
|
MemberAccessor{
|
||
|
|
Identifier{tint_pulling_vertex_buffer_0}
|
||
|
|
Identifier{data}
|
||
|
|
}
|
||
|
|
Binary{
|
||
|
|
Binary{
|
||
|
|
Identifier{tint_pulling_pos}
|
||
|
|
add
|
||
|
|
ScalarConstructor{0}
|
||
|
|
}
|
||
|
|
divide
|
||
|
|
ScalarConstructor{4}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
As<__f32>{
|
||
|
|
ArrayAccessor{
|
||
|
|
MemberAccessor{
|
||
|
|
Identifier{tint_pulling_vertex_buffer_0}
|
||
|
|
Identifier{data}
|
||
|
|
}
|
||
|
|
Binary{
|
||
|
|
Binary{
|
||
|
|
Identifier{tint_pulling_pos}
|
||
|
|
add
|
||
|
|
ScalarConstructor{4}
|
||
|
|
}
|
||
|
|
divide
|
||
|
|
ScalarConstructor{4}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
Assignment{
|
||
|
|
Identifier{tint_pulling_pos}
|
||
|
|
Binary{
|
||
|
|
Binary{
|
||
|
|
Identifier{tint_pulling_vertex_index}
|
||
|
|
multiply
|
||
|
|
ScalarConstructor{12}
|
||
|
|
}
|
||
|
|
add
|
||
|
|
ScalarConstructor{0}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
Assignment{
|
||
|
|
Identifier{var_b}
|
||
|
|
TypeConstructor{
|
||
|
|
__vec_3__f32
|
||
|
|
As<__f32>{
|
||
|
|
ArrayAccessor{
|
||
|
|
MemberAccessor{
|
||
|
|
Identifier{tint_pulling_vertex_buffer_1}
|
||
|
|
Identifier{data}
|
||
|
|
}
|
||
|
|
Binary{
|
||
|
|
Binary{
|
||
|
|
Identifier{tint_pulling_pos}
|
||
|
|
add
|
||
|
|
ScalarConstructor{0}
|
||
|
|
}
|
||
|
|
divide
|
||
|
|
ScalarConstructor{4}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
As<__f32>{
|
||
|
|
ArrayAccessor{
|
||
|
|
MemberAccessor{
|
||
|
|
Identifier{tint_pulling_vertex_buffer_1}
|
||
|
|
Identifier{data}
|
||
|
|
}
|
||
|
|
Binary{
|
||
|
|
Binary{
|
||
|
|
Identifier{tint_pulling_pos}
|
||
|
|
add
|
||
|
|
ScalarConstructor{4}
|
||
|
|
}
|
||
|
|
divide
|
||
|
|
ScalarConstructor{4}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
As<__f32>{
|
||
|
|
ArrayAccessor{
|
||
|
|
MemberAccessor{
|
||
|
|
Identifier{tint_pulling_vertex_buffer_1}
|
||
|
|
Identifier{data}
|
||
|
|
}
|
||
|
|
Binary{
|
||
|
|
Binary{
|
||
|
|
Identifier{tint_pulling_pos}
|
||
|
|
add
|
||
|
|
ScalarConstructor{8}
|
||
|
|
}
|
||
|
|
divide
|
||
|
|
ScalarConstructor{4}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
Assignment{
|
||
|
|
Identifier{tint_pulling_pos}
|
||
|
|
Binary{
|
||
|
|
Binary{
|
||
|
|
Identifier{tint_pulling_vertex_index}
|
||
|
|
multiply
|
||
|
|
ScalarConstructor{16}
|
||
|
|
}
|
||
|
|
add
|
||
|
|
ScalarConstructor{0}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
Assignment{
|
||
|
|
Identifier{var_c}
|
||
|
|
TypeConstructor{
|
||
|
|
__vec_4__f32
|
||
|
|
As<__f32>{
|
||
|
|
ArrayAccessor{
|
||
|
|
MemberAccessor{
|
||
|
|
Identifier{tint_pulling_vertex_buffer_2}
|
||
|
|
Identifier{data}
|
||
|
|
}
|
||
|
|
Binary{
|
||
|
|
Binary{
|
||
|
|
Identifier{tint_pulling_pos}
|
||
|
|
add
|
||
|
|
ScalarConstructor{0}
|
||
|
|
}
|
||
|
|
divide
|
||
|
|
ScalarConstructor{4}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
As<__f32>{
|
||
|
|
ArrayAccessor{
|
||
|
|
MemberAccessor{
|
||
|
|
Identifier{tint_pulling_vertex_buffer_2}
|
||
|
|
Identifier{data}
|
||
|
|
}
|
||
|
|
Binary{
|
||
|
|
Binary{
|
||
|
|
Identifier{tint_pulling_pos}
|
||
|
|
add
|
||
|
|
ScalarConstructor{4}
|
||
|
|
}
|
||
|
|
divide
|
||
|
|
ScalarConstructor{4}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
As<__f32>{
|
||
|
|
ArrayAccessor{
|
||
|
|
MemberAccessor{
|
||
|
|
Identifier{tint_pulling_vertex_buffer_2}
|
||
|
|
Identifier{data}
|
||
|
|
}
|
||
|
|
Binary{
|
||
|
|
Binary{
|
||
|
|
Identifier{tint_pulling_pos}
|
||
|
|
add
|
||
|
|
ScalarConstructor{8}
|
||
|
|
}
|
||
|
|
divide
|
||
|
|
ScalarConstructor{4}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
As<__f32>{
|
||
|
|
ArrayAccessor{
|
||
|
|
MemberAccessor{
|
||
|
|
Identifier{tint_pulling_vertex_buffer_2}
|
||
|
|
Identifier{data}
|
||
|
|
}
|
||
|
|
Binary{
|
||
|
|
Binary{
|
||
|
|
Identifier{tint_pulling_pos}
|
||
|
|
add
|
||
|
|
ScalarConstructor{12}
|
||
|
|
}
|
||
|
|
divide
|
||
|
|
ScalarConstructor{4}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
)",
|
||
|
|
mod()->to_str());
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace
|
||
|
|
} // namespace transform
|
||
|
|
} // namespace ast
|
||
|
|
} // namespace tint
|