blob: cbd95ec1e425e51e43a2ec0825c2493e5755f3c1 [file] [log] [blame]
// Copyright 2020 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 "gmock/gmock.h"
#include "src/tint/ast/stage_attribute.h"
#include "src/tint/ast/variable_decl_statement.h"
#include "src/tint/ast/workgroup_attribute.h"
#include "src/tint/writer/hlsl/test_helper.h"
using ::testing::HasSubstr;
using namespace tint::number_suffixes; // NOLINT
namespace tint::writer::hlsl {
namespace {
using HlslGeneratorImplTest_Function = TestHelper;
TEST_F(HlslGeneratorImplTest_Function, Emit_Function) {
Func("my_func", ast::VariableList{}, ty.void_(),
{
Return(),
});
GeneratorImpl& gen = Build();
gen.increment_indent();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(), R"( void my_func() {
return;
}
)");
}
TEST_F(HlslGeneratorImplTest_Function, Emit_Function_Name_Collision) {
Func("GeometryShader", ast::VariableList{}, ty.void_(),
{
Return(),
});
GeneratorImpl& gen = SanitizeAndBuild();
gen.increment_indent();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_THAT(gen.result(), HasSubstr(R"( void tint_symbol() {
return;
})"));
}
TEST_F(HlslGeneratorImplTest_Function, Emit_Function_WithParams) {
Func("my_func", ast::VariableList{Param("a", ty.f32()), Param("b", ty.i32())}, ty.void_(),
{
Return(),
});
GeneratorImpl& gen = Build();
gen.increment_indent();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(), R"( void my_func(float a, int b) {
return;
}
)");
}
TEST_F(HlslGeneratorImplTest_Function, Emit_Attribute_EntryPoint_NoReturn_Void) {
Func("main", ast::VariableList{}, ty.void_(), {/* no explicit return */},
{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = Build();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(), R"(void main() {
return;
}
)");
}
TEST_F(HlslGeneratorImplTest_Function, PtrParameter) {
// fn f(foo : ptr<function, f32>) -> f32 {
// return *foo;
// }
Func("f", {Param("foo", ty.pointer<f32>(ast::StorageClass::kFunction))}, ty.f32(),
{Return(Deref("foo"))});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_THAT(gen.result(), HasSubstr(R"(float f(inout float foo) {
return foo;
}
)"));
}
TEST_F(HlslGeneratorImplTest_Function, Emit_Attribute_EntryPoint_WithInOutVars) {
// fn frag_main(@location(0) foo : f32) -> @location(1) f32 {
// return foo;
// }
auto* foo_in = Param("foo", ty.f32(), {Location(0)});
Func("frag_main", ast::VariableList{foo_in}, ty.f32(), {Return("foo")},
{Stage(ast::PipelineStage::kFragment)}, {Location(1)});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(), R"(struct tint_symbol_1 {
float foo : TEXCOORD0;
};
struct tint_symbol_2 {
float value : SV_Target1;
};
float frag_main_inner(float foo) {
return foo;
}
tint_symbol_2 frag_main(tint_symbol_1 tint_symbol) {
const float inner_result = frag_main_inner(tint_symbol.foo);
tint_symbol_2 wrapper_result = (tint_symbol_2)0;
wrapper_result.value = inner_result;
return wrapper_result;
}
)");
}
TEST_F(HlslGeneratorImplTest_Function, Emit_Attribute_EntryPoint_WithInOut_Builtins) {
// fn frag_main(@position(0) coord : vec4<f32>) -> @frag_depth f32 {
// return coord.x;
// }
auto* coord_in = Param("coord", ty.vec4<f32>(), {Builtin(ast::Builtin::kPosition)});
Func("frag_main", ast::VariableList{coord_in}, ty.f32(), {Return(MemberAccessor("coord", "x"))},
{Stage(ast::PipelineStage::kFragment)}, {Builtin(ast::Builtin::kFragDepth)});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(), R"(struct tint_symbol_1 {
float4 coord : SV_Position;
};
struct tint_symbol_2 {
float value : SV_Depth;
};
float frag_main_inner(float4 coord) {
return coord.x;
}
tint_symbol_2 frag_main(tint_symbol_1 tint_symbol) {
const float inner_result = frag_main_inner(tint_symbol.coord);
tint_symbol_2 wrapper_result = (tint_symbol_2)0;
wrapper_result.value = inner_result;
return wrapper_result;
}
)");
}
TEST_F(HlslGeneratorImplTest_Function, Emit_Attribute_EntryPoint_SharedStruct_DifferentStages) {
// struct Interface {
// @builtin(position) pos : vec4<f32>;
// @location(1) col1 : f32;
// @location(2) col2 : f32;
// };
// fn vert_main() -> Interface {
// return Interface(vec4<f32>(), 0.4, 0.6);
// }
// fn frag_main(inputs : Interface) {
// const r = inputs.col1;
// const g = inputs.col2;
// const p = inputs.pos;
// }
auto* interface_struct = Structure(
"Interface", {
Member("pos", ty.vec4<f32>(), {Builtin(ast::Builtin::kPosition)}),
Member("col1", ty.f32(), {Location(1)}),
Member("col2", ty.f32(), {Location(2)}),
});
Func("vert_main", {}, ty.Of(interface_struct),
{Return(Construct(ty.Of(interface_struct), Construct(ty.vec4<f32>()), Expr(0.5_f),
Expr(0.25_f)))},
{Stage(ast::PipelineStage::kVertex)});
Func("frag_main", {Param("inputs", ty.Of(interface_struct))}, ty.void_(),
{
Decl(Let("r", ty.f32(), MemberAccessor("inputs", "col1"))),
Decl(Let("g", ty.f32(), MemberAccessor("inputs", "col2"))),
Decl(Let("p", ty.vec4<f32>(), MemberAccessor("inputs", "pos"))),
},
{Stage(ast::PipelineStage::kFragment)});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(), R"(struct Interface {
float4 pos;
float col1;
float col2;
};
struct tint_symbol {
float col1 : TEXCOORD1;
float col2 : TEXCOORD2;
float4 pos : SV_Position;
};
Interface vert_main_inner() {
const Interface tint_symbol_3 = {(0.0f).xxxx, 0.5f, 0.25f};
return tint_symbol_3;
}
tint_symbol vert_main() {
const Interface inner_result = vert_main_inner();
tint_symbol wrapper_result = (tint_symbol)0;
wrapper_result.pos = inner_result.pos;
wrapper_result.col1 = inner_result.col1;
wrapper_result.col2 = inner_result.col2;
return wrapper_result;
}
struct tint_symbol_2 {
float col1 : TEXCOORD1;
float col2 : TEXCOORD2;
float4 pos : SV_Position;
};
void frag_main_inner(Interface inputs) {
const float r = inputs.col1;
const float g = inputs.col2;
const float4 p = inputs.pos;
}
void frag_main(tint_symbol_2 tint_symbol_1) {
const Interface tint_symbol_4 = {tint_symbol_1.pos, tint_symbol_1.col1, tint_symbol_1.col2};
frag_main_inner(tint_symbol_4);
return;
}
)");
}
TEST_F(HlslGeneratorImplTest_Function, Emit_Attribute_EntryPoint_SharedStruct_HelperFunction) {
// struct VertexOutput {
// @builtin(position) pos : vec4<f32>;
// };
// fn foo(x : f32) -> VertexOutput {
// return VertexOutput(vec4<f32>(x, x, x, 1.0));
// }
// fn vert_main1() -> VertexOutput {
// return foo(0.5);
// }
// fn vert_main2() -> VertexOutput {
// return foo(0.25);
// }
auto* vertex_output_struct = Structure(
"VertexOutput", {Member("pos", ty.vec4<f32>(), {Builtin(ast::Builtin::kPosition)})});
Func("foo", {Param("x", ty.f32())}, ty.Of(vertex_output_struct),
{Return(Construct(ty.Of(vertex_output_struct),
Construct(ty.vec4<f32>(), "x", "x", "x", Expr(1_f))))},
{});
Func("vert_main1", {}, ty.Of(vertex_output_struct), {Return(Call("foo", Expr(0.5_f)))},
{Stage(ast::PipelineStage::kVertex)});
Func("vert_main2", {}, ty.Of(vertex_output_struct), {Return(Call("foo", Expr(0.25_f)))},
{Stage(ast::PipelineStage::kVertex)});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(), R"(struct VertexOutput {
float4 pos;
};
VertexOutput foo(float x) {
const VertexOutput tint_symbol_2 = {float4(x, x, x, 1.0f)};
return tint_symbol_2;
}
struct tint_symbol {
float4 pos : SV_Position;
};
VertexOutput vert_main1_inner() {
return foo(0.5f);
}
tint_symbol vert_main1() {
const VertexOutput inner_result = vert_main1_inner();
tint_symbol wrapper_result = (tint_symbol)0;
wrapper_result.pos = inner_result.pos;
return wrapper_result;
}
struct tint_symbol_1 {
float4 pos : SV_Position;
};
VertexOutput vert_main2_inner() {
return foo(0.25f);
}
tint_symbol_1 vert_main2() {
const VertexOutput inner_result_1 = vert_main2_inner();
tint_symbol_1 wrapper_result_1 = (tint_symbol_1)0;
wrapper_result_1.pos = inner_result_1.pos;
return wrapper_result_1;
}
)");
}
TEST_F(HlslGeneratorImplTest_Function, Emit_Attribute_EntryPoint_With_Uniform) {
auto* ubo_ty = Structure("UBO", {Member("coord", ty.vec4<f32>())});
auto* ubo = Global("ubo", ty.Of(ubo_ty), ast::StorageClass::kUniform,
ast::AttributeList{
create<ast::BindingAttribute>(0),
create<ast::GroupAttribute>(1),
});
Func("sub_func",
{
Param("param", ty.f32()),
},
ty.f32(),
{
Return(MemberAccessor(MemberAccessor(ubo, "coord"), "x")),
});
auto* var = Var("v", ty.f32(), ast::StorageClass::kNone, Call("sub_func", 1_f));
Func("frag_main", {}, ty.void_(),
{
Decl(var),
Return(),
},
{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(), R"(cbuffer cbuffer_ubo : register(b0, space1) {
uint4 ubo[1];
};
float sub_func(float param) {
return asfloat(ubo[0].x);
}
void frag_main() {
float v = sub_func(1.0f);
return;
}
)");
}
TEST_F(HlslGeneratorImplTest_Function, Emit_Attribute_EntryPoint_With_UniformStruct) {
auto* s = Structure("Uniforms", {Member("coord", ty.vec4<f32>())});
Global("uniforms", ty.Of(s), ast::StorageClass::kUniform,
ast::AttributeList{
create<ast::BindingAttribute>(0),
create<ast::GroupAttribute>(1),
});
auto* var = Var("v", ty.f32(), ast::StorageClass::kNone,
MemberAccessor(MemberAccessor("uniforms", "coord"), "x"));
Func("frag_main", ast::VariableList{}, ty.void_(),
{
Decl(var),
Return(),
},
{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = Build();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(), R"(cbuffer cbuffer_uniforms : register(b0, space1) {
uint4 uniforms[1];
};
void frag_main() {
float v = uniforms.coord.x;
return;
}
)");
}
TEST_F(HlslGeneratorImplTest_Function, Emit_Attribute_EntryPoint_With_RW_StorageBuffer_Read) {
auto* s = Structure("Data", {
Member("a", ty.i32()),
Member("b", ty.f32()),
});
Global("coord", ty.Of(s), ast::StorageClass::kStorage, ast::Access::kReadWrite,
ast::AttributeList{
create<ast::BindingAttribute>(0),
create<ast::GroupAttribute>(1),
});
auto* var = Var("v", ty.f32(), ast::StorageClass::kNone, MemberAccessor("coord", "b"));
Func("frag_main", ast::VariableList{}, ty.void_(),
{
Decl(var),
Return(),
},
{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(),
R"(RWByteAddressBuffer coord : register(u0, space1);
void frag_main() {
float v = asfloat(coord.Load(4u));
return;
}
)");
}
TEST_F(HlslGeneratorImplTest_Function, Emit_Attribute_EntryPoint_With_RO_StorageBuffer_Read) {
auto* s = Structure("Data", {
Member("a", ty.i32()),
Member("b", ty.f32()),
});
Global("coord", ty.Of(s), ast::StorageClass::kStorage, ast::Access::kRead,
ast::AttributeList{
create<ast::BindingAttribute>(0),
create<ast::GroupAttribute>(1),
});
auto* var = Var("v", ty.f32(), ast::StorageClass::kNone, MemberAccessor("coord", "b"));
Func("frag_main", ast::VariableList{}, ty.void_(),
{
Decl(var),
Return(),
},
{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(),
R"(ByteAddressBuffer coord : register(t0, space1);
void frag_main() {
float v = asfloat(coord.Load(4u));
return;
}
)");
}
TEST_F(HlslGeneratorImplTest_Function, Emit_Attribute_EntryPoint_With_WO_StorageBuffer_Store) {
auto* s = Structure("Data", {
Member("a", ty.i32()),
Member("b", ty.f32()),
});
Global("coord", ty.Of(s), ast::StorageClass::kStorage, ast::Access::kWrite,
ast::AttributeList{
create<ast::BindingAttribute>(0),
create<ast::GroupAttribute>(1),
});
Func("frag_main", ast::VariableList{}, ty.void_(),
{
Assign(MemberAccessor("coord", "b"), Expr(2_f)),
Return(),
},
{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(),
R"(RWByteAddressBuffer coord : register(u0, space1);
void frag_main() {
coord.Store(4u, asuint(2.0f));
return;
}
)");
}
TEST_F(HlslGeneratorImplTest_Function, Emit_Attribute_EntryPoint_With_StorageBuffer_Store) {
auto* s = Structure("Data", {
Member("a", ty.i32()),
Member("b", ty.f32()),
});
Global("coord", ty.Of(s), ast::StorageClass::kStorage, ast::Access::kReadWrite,
ast::AttributeList{
create<ast::BindingAttribute>(0),
create<ast::GroupAttribute>(1),
});
Func("frag_main", ast::VariableList{}, ty.void_(),
{
Assign(MemberAccessor("coord", "b"), Expr(2_f)),
Return(),
},
{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(),
R"(RWByteAddressBuffer coord : register(u0, space1);
void frag_main() {
coord.Store(4u, asuint(2.0f));
return;
}
)");
}
TEST_F(HlslGeneratorImplTest_Function, Emit_Attribute_Called_By_EntryPoint_With_Uniform) {
auto* s = Structure("S", {Member("x", ty.f32())});
Global("coord", ty.Of(s), ast::StorageClass::kUniform,
ast::AttributeList{
create<ast::BindingAttribute>(0),
create<ast::GroupAttribute>(1),
});
Func("sub_func", ast::VariableList{Param("param", ty.f32())}, ty.f32(),
{
Return(MemberAccessor("coord", "x")),
});
auto* var = Var("v", ty.f32(), ast::StorageClass::kNone, Call("sub_func", 1_f));
Func("frag_main", ast::VariableList{}, ty.void_(),
{
Decl(var),
Return(),
},
{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = Build();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(), R"(cbuffer cbuffer_coord : register(b0, space1) {
uint4 coord[1];
};
float sub_func(float param) {
return coord.x;
}
void frag_main() {
float v = sub_func(1.0f);
return;
}
)");
}
TEST_F(HlslGeneratorImplTest_Function, Emit_Attribute_Called_By_EntryPoint_With_StorageBuffer) {
auto* s = Structure("S", {Member("x", ty.f32())});
Global("coord", ty.Of(s), ast::StorageClass::kStorage, ast::Access::kReadWrite,
ast::AttributeList{
create<ast::BindingAttribute>(0),
create<ast::GroupAttribute>(1),
});
Func("sub_func", ast::VariableList{Param("param", ty.f32())}, ty.f32(),
{
Return(MemberAccessor("coord", "x")),
});
auto* var = Var("v", ty.f32(), ast::StorageClass::kNone, Call("sub_func", 1_f));
Func("frag_main", ast::VariableList{}, ty.void_(),
{
Decl(var),
Return(),
},
{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(),
R"(RWByteAddressBuffer coord : register(u0, space1);
float sub_func(float param) {
return asfloat(coord.Load(0u));
}
void frag_main() {
float v = sub_func(1.0f);
return;
}
)");
}
TEST_F(HlslGeneratorImplTest_Function, Emit_Attribute_EntryPoint_WithNameCollision) {
Func("GeometryShader", ast::VariableList{}, ty.void_(), {},
{
Stage(ast::PipelineStage::kFragment),
});
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(), R"(void tint_symbol() {
return;
}
)");
}
TEST_F(HlslGeneratorImplTest_Function, Emit_Attribute_EntryPoint_Compute) {
Func("main", ast::VariableList{}, ty.void_(),
{
Return(),
},
{Stage(ast::PipelineStage::kCompute), WorkgroupSize(1_i)});
GeneratorImpl& gen = Build();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(), R"([numthreads(1, 1, 1)]
void main() {
return;
}
)");
}
TEST_F(HlslGeneratorImplTest_Function, Emit_Attribute_EntryPoint_Compute_WithWorkgroup_Literal) {
Func("main", ast::VariableList{}, ty.void_(), {},
{
Stage(ast::PipelineStage::kCompute),
WorkgroupSize(2_i, 4_i, 6_i),
});
GeneratorImpl& gen = Build();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(), R"([numthreads(2, 4, 6)]
void main() {
return;
}
)");
}
TEST_F(HlslGeneratorImplTest_Function, Emit_Attribute_EntryPoint_Compute_WithWorkgroup_Const) {
GlobalConst("width", ty.i32(), Construct(ty.i32(), 2_i));
GlobalConst("height", ty.i32(), Construct(ty.i32(), 3_i));
GlobalConst("depth", ty.i32(), Construct(ty.i32(), 4_i));
Func("main", ast::VariableList{}, ty.void_(), {},
{
Stage(ast::PipelineStage::kCompute),
WorkgroupSize("width", "height", "depth"),
});
GeneratorImpl& gen = Build();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(), R"(static const int width = 2;
static const int height = 3;
static const int depth = 4;
[numthreads(2, 3, 4)]
void main() {
return;
}
)");
}
TEST_F(HlslGeneratorImplTest_Function,
Emit_Attribute_EntryPoint_Compute_WithWorkgroup_OverridableConst) {
Override("width", ty.i32(), Construct(ty.i32(), 2_i), {Id(7u)});
Override("height", ty.i32(), Construct(ty.i32(), 3_i), {Id(8u)});
Override("depth", ty.i32(), Construct(ty.i32(), 4_i), {Id(9u)});
Func("main", ast::VariableList{}, ty.void_(), {},
{
Stage(ast::PipelineStage::kCompute),
WorkgroupSize("width", "height", "depth"),
});
GeneratorImpl& gen = Build();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(), R"(#ifndef WGSL_SPEC_CONSTANT_7
#define WGSL_SPEC_CONSTANT_7 2
#endif
static const int width = WGSL_SPEC_CONSTANT_7;
#ifndef WGSL_SPEC_CONSTANT_8
#define WGSL_SPEC_CONSTANT_8 3
#endif
static const int height = WGSL_SPEC_CONSTANT_8;
#ifndef WGSL_SPEC_CONSTANT_9
#define WGSL_SPEC_CONSTANT_9 4
#endif
static const int depth = WGSL_SPEC_CONSTANT_9;
[numthreads(WGSL_SPEC_CONSTANT_7, WGSL_SPEC_CONSTANT_8, WGSL_SPEC_CONSTANT_9)]
void main() {
return;
}
)");
}
TEST_F(HlslGeneratorImplTest_Function, Emit_Function_WithArrayParams) {
Func("my_func", ast::VariableList{Param("a", ty.array<f32, 5>())}, ty.void_(),
{
Return(),
});
GeneratorImpl& gen = Build();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(), R"(void my_func(float a[5]) {
return;
}
)");
}
TEST_F(HlslGeneratorImplTest_Function, Emit_Function_WithArrayReturn) {
Func("my_func", {}, ty.array<f32, 5>(),
{
Return(Construct(ty.array<f32, 5>())),
});
GeneratorImpl& gen = Build();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(), R"(typedef float my_func_ret[5];
my_func_ret my_func() {
return (float[5])0;
}
)");
}
TEST_F(HlslGeneratorImplTest_Function, Emit_Function_WithDiscardAndVoidReturn) {
Func("my_func", {Param("a", ty.i32())}, ty.void_(),
{
If(Equal("a", 0_i), //
Block(create<ast::DiscardStatement>())),
Return(),
});
GeneratorImpl& gen = Build();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(), R"(void my_func(int a) {
if ((a == 0)) {
discard;
}
return;
}
)");
}
TEST_F(HlslGeneratorImplTest_Function, Emit_Function_WithDiscardAndNonVoidReturn) {
Func("my_func", {Param("a", ty.i32())}, ty.i32(),
{
If(Equal("a", 0_i), //
Block(create<ast::DiscardStatement>())),
Return(42_i),
});
GeneratorImpl& gen = Build();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(), R"(int my_func(int a) {
if (true) {
if ((a == 0)) {
discard;
}
return 42;
}
int unused;
return unused;
}
)");
}
// https://crbug.com/tint/297
TEST_F(HlslGeneratorImplTest_Function, Emit_Multiple_EntryPoint_With_Same_ModuleVar) {
// struct Data {
// d : f32;
// };
// @binding(0) @group(0) var<storage> data : Data;
//
// @stage(compute) @workgroup_size(1)
// fn a() {
// var v = data.d;
// return;
// }
//
// @stage(compute) @workgroup_size(1)
// fn b() {
// var v = data.d;
// return;
// }
auto* s = Structure("Data", {Member("d", ty.f32())});
Global("data", ty.Of(s), ast::StorageClass::kStorage, ast::Access::kReadWrite,
ast::AttributeList{
create<ast::BindingAttribute>(0),
create<ast::GroupAttribute>(0),
});
{
auto* var = Var("v", ty.f32(), ast::StorageClass::kNone, MemberAccessor("data", "d"));
Func("a", ast::VariableList{}, ty.void_(),
{
Decl(var),
Return(),
},
{Stage(ast::PipelineStage::kCompute), WorkgroupSize(1_i)});
}
{
auto* var = Var("v", ty.f32(), ast::StorageClass::kNone, MemberAccessor("data", "d"));
Func("b", ast::VariableList{}, ty.void_(),
{
Decl(var),
Return(),
},
{Stage(ast::PipelineStage::kCompute), WorkgroupSize(1_i)});
}
GeneratorImpl& gen = SanitizeAndBuild();
ASSERT_TRUE(gen.Generate()) << gen.error();
EXPECT_EQ(gen.result(), R"(RWByteAddressBuffer data : register(u0, space0);
[numthreads(1, 1, 1)]
void a() {
float v = asfloat(data.Load(0u));
return;
}
[numthreads(1, 1, 1)]
void b() {
float v = asfloat(data.Load(0u));
return;
}
)");
}
} // namespace
} // namespace tint::writer::hlsl