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dawn / dawn / c58a889b687b6a5f34689e4bda476677fa3618b6 / . / src / tint / lang / spirv / writer / builtin_test.cc
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// Copyright 2023 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "src/tint/lang/spirv/writer/common/helper_test.h"
#include "src/tint/lang/core/builtin_fn.h"
#include "src/tint/lang/core/type/builtin_structs.h"
using namespace tint::core::number_suffixes; // NOLINT
using namespace tint::core::fluent_types; // NOLINT
namespace tint::spirv::writer {
namespace {
/// A parameterized builtin function test case.
struct BuiltinTestCase {
/// The element type to test.
TestElementType type;
/// The builtin function.
enum core::BuiltinFn function;
/// The expected SPIR-V instruction string.
std::string spirv_inst;
};
// Tests for builtins with the signature: T = func(T)
using Builtin_1arg = SpirvWriterTestWithParam<BuiltinTestCase>;
TEST_P(Builtin_1arg, Scalar) {
auto params = GetParam();
auto* func = b.Function("foo", ty.void_());
b.Append(func->Block(), [&] {
b.Call(MakeScalarType(params.type), params.function, MakeScalarValue(params.type));
b.Return(func);
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(params.spirv_inst);
}
TEST_P(Builtin_1arg, Vector) {
auto params = GetParam();
auto* func = b.Function("foo", ty.void_());
b.Append(func->Block(), [&] {
b.Call(MakeVectorType(params.type), params.function, MakeVectorValue(params.type));
b.Return(func);
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(params.spirv_inst);
}
INSTANTIATE_TEST_SUITE_P(
SpirvWriterTest,
Builtin_1arg,
testing::Values(BuiltinTestCase{kI32, core::BuiltinFn::kAbs, "SAbs"},
BuiltinTestCase{kF32, core::BuiltinFn::kAbs, "FAbs"},
BuiltinTestCase{kF16, core::BuiltinFn::kAbs, "FAbs"},
BuiltinTestCase{kF32, core::BuiltinFn::kAcos, "Acos"},
BuiltinTestCase{kF16, core::BuiltinFn::kAcos, "Acos"},
BuiltinTestCase{kF32, core::BuiltinFn::kAsinh, "Asinh"},
BuiltinTestCase{kF16, core::BuiltinFn::kAsinh, "Asinh"},
BuiltinTestCase{kF32, core::BuiltinFn::kAcos, "Acos"},
BuiltinTestCase{kF16, core::BuiltinFn::kAcos, "Acos"},
BuiltinTestCase{kF32, core::BuiltinFn::kAsinh, "Asinh"},
BuiltinTestCase{kF16, core::BuiltinFn::kAsinh, "Asinh"},
BuiltinTestCase{kF32, core::BuiltinFn::kAtan, "Atan"},
BuiltinTestCase{kF16, core::BuiltinFn::kAtan, "Atan"},
BuiltinTestCase{kF32, core::BuiltinFn::kAtanh, "Atanh"},
BuiltinTestCase{kF16, core::BuiltinFn::kAtanh, "Atanh"},
BuiltinTestCase{kF32, core::BuiltinFn::kCeil, "Ceil"},
BuiltinTestCase{kF16, core::BuiltinFn::kCeil, "Ceil"},
BuiltinTestCase{kF32, core::BuiltinFn::kCos, "Cos"},
BuiltinTestCase{kF16, core::BuiltinFn::kCos, "Cos"},
BuiltinTestCase{kI32, core::BuiltinFn::kCountOneBits, "OpBitCount"},
BuiltinTestCase{kU32, core::BuiltinFn::kCountOneBits, "OpBitCount"},
BuiltinTestCase{kF32, core::BuiltinFn::kDpdx, "OpDPdx"},
BuiltinTestCase{kF32, core::BuiltinFn::kDpdxCoarse, "OpDPdxCoarse"},
BuiltinTestCase{kF32, core::BuiltinFn::kDpdxFine, "OpDPdxFine"},
BuiltinTestCase{kF32, core::BuiltinFn::kDpdy, "OpDPdy"},
BuiltinTestCase{kF32, core::BuiltinFn::kDpdyCoarse, "OpDPdyCoarse"},
BuiltinTestCase{kF32, core::BuiltinFn::kDpdyFine, "OpDPdyFine"},
BuiltinTestCase{kF32, core::BuiltinFn::kDegrees, "Degrees"},
BuiltinTestCase{kF16, core::BuiltinFn::kDegrees, "Degrees"},
BuiltinTestCase{kF32, core::BuiltinFn::kExp, "Exp"},
BuiltinTestCase{kF16, core::BuiltinFn::kExp, "Exp"},
BuiltinTestCase{kF32, core::BuiltinFn::kExp2, "Exp2"},
BuiltinTestCase{kF16, core::BuiltinFn::kExp2, "Exp2"},
BuiltinTestCase{kF32, core::BuiltinFn::kFloor, "Floor"},
BuiltinTestCase{kF16, core::BuiltinFn::kFloor, "Floor"},
BuiltinTestCase{kF32, core::BuiltinFn::kFract, "Fract"},
BuiltinTestCase{kF16, core::BuiltinFn::kFract, "Fract"},
BuiltinTestCase{kF32, core::BuiltinFn::kFwidth, "OpFwidth"},
BuiltinTestCase{kF32, core::BuiltinFn::kFwidthCoarse, "OpFwidthCoarse"},
BuiltinTestCase{kF32, core::BuiltinFn::kFwidthFine, "OpFwidthFine"},
BuiltinTestCase{kF32, core::BuiltinFn::kInverseSqrt, "InverseSqrt"},
BuiltinTestCase{kF16, core::BuiltinFn::kInverseSqrt, "InverseSqrt"},
BuiltinTestCase{kF32, core::BuiltinFn::kLog, "Log"},
BuiltinTestCase{kF16, core::BuiltinFn::kLog, "Log"},
BuiltinTestCase{kF32, core::BuiltinFn::kLog2, "Log2"},
BuiltinTestCase{kF16, core::BuiltinFn::kLog2, "Log2"},
BuiltinTestCase{kF32, core::BuiltinFn::kQuantizeToF16, "OpQuantizeToF16"},
BuiltinTestCase{kF32, core::BuiltinFn::kRadians, "Radians"},
BuiltinTestCase{kF16, core::BuiltinFn::kRadians, "Radians"},
BuiltinTestCase{kI32, core::BuiltinFn::kReverseBits, "OpBitReverse"},
BuiltinTestCase{kU32, core::BuiltinFn::kReverseBits, "OpBitReverse"},
BuiltinTestCase{kF32, core::BuiltinFn::kRound, "RoundEven"},
BuiltinTestCase{kF16, core::BuiltinFn::kRound, "RoundEven"},
BuiltinTestCase{kF32, core::BuiltinFn::kSign, "FSign"},
BuiltinTestCase{kF16, core::BuiltinFn::kSign, "FSign"},
BuiltinTestCase{kI32, core::BuiltinFn::kSign, "SSign"},
BuiltinTestCase{kF32, core::BuiltinFn::kSin, "Sin"},
BuiltinTestCase{kF16, core::BuiltinFn::kSin, "Sin"},
BuiltinTestCase{kF32, core::BuiltinFn::kSqrt, "Sqrt"},
BuiltinTestCase{kF16, core::BuiltinFn::kSqrt, "Sqrt"},
BuiltinTestCase{kF32, core::BuiltinFn::kTan, "Tan"},
BuiltinTestCase{kF16, core::BuiltinFn::kTan, "Tan"},
BuiltinTestCase{kF32, core::BuiltinFn::kTrunc, "Trunc"},
BuiltinTestCase{kF16, core::BuiltinFn::kTrunc, "Trunc"},
BuiltinTestCase{kF32, core::BuiltinFn::kCosh, "Cosh"},
BuiltinTestCase{kF16, core::BuiltinFn::kCosh, "Cosh"},
BuiltinTestCase{kF32, core::BuiltinFn::kSinh, "Sinh"},
BuiltinTestCase{kF16, core::BuiltinFn::kSinh, "Sinh"},
BuiltinTestCase{kF32, core::BuiltinFn::kTanh, "Tanh"},
BuiltinTestCase{kF16, core::BuiltinFn::kTanh, "Tanh"}));
// Test that abs of an unsigned value just folds away.
TEST_F(SpirvWriterTest, Builtin_Abs_u32) {
auto* func = b.Function("foo", MakeScalarType(kU32));
b.Append(func->Block(), [&] {
auto* arg = MakeScalarValue(kU32);
auto* result = b.Call(MakeScalarType(kU32), core::BuiltinFn::kAbs, arg);
b.Return(func, result);
mod.SetName(arg, "arg");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
%foo = OpFunction %uint None %3
%4 = OpLabel
OpReturnValue %arg
OpFunctionEnd
)");
}
TEST_F(SpirvWriterTest, Builtin_Abs_vec2u) {
auto* func = b.Function("foo", MakeVectorType(kU32));
b.Append(func->Block(), [&] {
auto* arg = MakeVectorValue(kU32);
auto* result = b.Call(MakeVectorType(kU32), core::BuiltinFn::kAbs, arg);
b.Return(func, result);
mod.SetName(arg, "arg");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
%foo = OpFunction %v2uint None %4
%5 = OpLabel
OpReturnValue %arg
OpFunctionEnd
)");
}
// Test that all of a scalar just folds away.
TEST_F(SpirvWriterTest, Builtin_All_Scalar) {
auto* arg = b.FunctionParam("arg", ty.bool_());
auto* func = b.Function("foo", ty.bool_());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.bool_(), core::BuiltinFn::kAll, arg);
b.Return(func, result);
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("OpReturnValue %arg");
}
TEST_F(SpirvWriterTest, Builtin_All_Vector) {
auto* arg = b.FunctionParam("arg", ty.vec4<bool>());
auto* func = b.Function("foo", ty.bool_());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.bool_(), core::BuiltinFn::kAll, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpAll %bool %arg");
}
// Test that any of a scalar just folds away.
TEST_F(SpirvWriterTest, Builtin_Any_Scalar) {
auto* arg = b.FunctionParam("arg", ty.bool_());
auto* func = b.Function("foo", ty.bool_());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.bool_(), core::BuiltinFn::kAny, arg);
b.Return(func, result);
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("OpReturnValue %arg");
}
TEST_F(SpirvWriterTest, Builtin_Any_Vector) {
auto* arg = b.FunctionParam("arg", ty.vec4<bool>());
auto* func = b.Function("foo", ty.bool_());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.bool_(), core::BuiltinFn::kAny, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpAny %bool %arg");
}
TEST_F(SpirvWriterTest, Builtin_Determinant_Mat4x4f) {
auto* arg = b.FunctionParam("arg", ty.mat4x4<f32>());
auto* func = b.Function("foo", ty.f32());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.f32(), core::BuiltinFn::kDeterminant, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %float %9 Determinant %arg");
}
TEST_F(SpirvWriterTest, Builtin_Determinant_Mat3x3h) {
auto* arg = b.FunctionParam("arg", ty.mat3x3<f16>());
auto* func = b.Function("foo", ty.f16());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.f16(), core::BuiltinFn::kDeterminant, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %half %9 Determinant %arg");
}
TEST_F(SpirvWriterTest, Builtin_Frexp_F32) {
auto* str = core::type::CreateFrexpResult(ty, mod.symbols, ty.f32());
auto* arg = b.FunctionParam("arg", ty.f32());
auto* func = b.Function("foo", str);
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(str, core::BuiltinFn::kFrexp, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %__frexp_result_f32 %9 FrexpStruct %arg");
}
TEST_F(SpirvWriterTest, Builtin_Frexp_F16) {
auto* str = core::type::CreateFrexpResult(ty, mod.symbols, ty.f16());
auto* arg = b.FunctionParam("arg", ty.f16());
auto* func = b.Function("foo", str);
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(str, core::BuiltinFn::kFrexp, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %__frexp_result_f16 %9 FrexpStruct %arg");
}
TEST_F(SpirvWriterTest, Builtin_Frexp_Vec2f) {
auto* str = core::type::CreateFrexpResult(ty, mod.symbols, ty.vec2<f32>());
auto* arg = b.FunctionParam("arg", ty.vec2<f32>());
auto* func = b.Function("foo", str);
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(str, core::BuiltinFn::kFrexp, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %__frexp_result_vec2_f32 %11 FrexpStruct %arg");
}
TEST_F(SpirvWriterTest, Builtin_Frexp_Vec3h) {
auto* str = core::type::CreateFrexpResult(ty, mod.symbols, ty.vec3<f16>());
auto* arg = b.FunctionParam("arg", ty.vec3<f16>());
auto* func = b.Function("foo", str);
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(str, core::BuiltinFn::kFrexp, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %__frexp_result_vec3_f16 %11 FrexpStruct %arg");
}
TEST_F(SpirvWriterTest, Builtin_Length_vec4f) {
auto* arg = b.FunctionParam("arg", ty.vec4<f32>());
auto* func = b.Function("foo", ty.f32());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.f32(), core::BuiltinFn::kLength, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %float %8 Length %arg");
}
TEST_F(SpirvWriterTest, Builtin_Modf_F32) {
auto* str = core::type::CreateModfResult(ty, mod.symbols, ty.f32());
auto* arg = b.FunctionParam("arg", ty.f32());
auto* func = b.Function("foo", str);
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(str, core::BuiltinFn::kModf, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %__modf_result_f32 %8 ModfStruct %arg");
}
TEST_F(SpirvWriterTest, Builtin_Modf_F16) {
auto* str = core::type::CreateModfResult(ty, mod.symbols, ty.f16());
auto* arg = b.FunctionParam("arg", ty.f16());
auto* func = b.Function("foo", str);
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(str, core::BuiltinFn::kModf, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %__modf_result_f16 %8 ModfStruct %arg");
}
TEST_F(SpirvWriterTest, Builtin_Modf_Vec2f) {
auto* str = core::type::CreateModfResult(ty, mod.symbols, ty.vec2<f32>());
auto* arg = b.FunctionParam("arg", ty.vec2<f32>());
auto* func = b.Function("foo", str);
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(str, core::BuiltinFn::kModf, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %__modf_result_vec2_f32 %9 ModfStruct %arg");
}
TEST_F(SpirvWriterTest, Builtin_Modf_Vec3h) {
auto* str = core::type::CreateModfResult(ty, mod.symbols, ty.vec3<f16>());
auto* arg = b.FunctionParam("arg", ty.vec3<f16>());
auto* func = b.Function("foo", str);
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(str, core::BuiltinFn::kModf, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %__modf_result_vec3_f16 %9 ModfStruct %arg");
}
TEST_F(SpirvWriterTest, Builtin_Normalize_vec4f) {
auto* arg = b.FunctionParam("arg", ty.vec4<f32>());
auto* func = b.Function("foo", ty.vec4<f32>());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec4<f32>(), core::BuiltinFn::kNormalize, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %v4float %8 Normalize %arg");
}
TEST_F(SpirvWriterTest, Builtin_Transpose_Mat2x3f) {
auto* arg = b.FunctionParam("arg", ty.mat2x3<f32>());
auto* func = b.Function("foo", ty.mat3x2<f32>());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.mat3x2<f32>(), core::BuiltinFn::kTranspose, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpTranspose %mat3v2float %arg");
}
TEST_F(SpirvWriterTest, Builtin_Transpose_Mat4x4f) {
auto* arg = b.FunctionParam("arg", ty.mat4x4<f32>());
auto* func = b.Function("foo", ty.mat4x4<f32>());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.mat4x4<f32>(), core::BuiltinFn::kTranspose, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpTranspose %mat4v4float %arg");
}
TEST_F(SpirvWriterTest, Builtin_Transpose_Mat4x3h) {
auto* arg = b.FunctionParam("arg", ty.mat4x3<f16>());
auto* func = b.Function("foo", ty.mat3x4<f16>());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.mat3x4<f16>(), core::BuiltinFn::kTranspose, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpTranspose %mat3v4half %arg");
}
TEST_F(SpirvWriterTest, Builtin_Transpose_Mat2x2h) {
auto* arg = b.FunctionParam("arg", ty.mat2x2<f16>());
auto* func = b.Function("foo", ty.mat2x2<f16>());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.mat2x2<f16>(), core::BuiltinFn::kTranspose, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpTranspose %mat2v2half %arg");
}
TEST_F(SpirvWriterTest, Builtin_Pack2X16Float) {
auto* arg = b.FunctionParam("arg", ty.vec2<f32>());
auto* func = b.Function("foo", ty.u32());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.u32(), core::BuiltinFn::kPack2X16Float, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %uint %9 PackHalf2x16 %arg");
}
TEST_F(SpirvWriterTest, Builtin_Pack2X16Snorm) {
auto* arg = b.FunctionParam("arg", ty.vec2<f32>());
auto* func = b.Function("foo", ty.u32());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.u32(), core::BuiltinFn::kPack2X16Snorm, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %uint %9 PackSnorm2x16 %arg");
}
TEST_F(SpirvWriterTest, Builtin_Pack2X16Unorm) {
auto* arg = b.FunctionParam("arg", ty.vec2<f32>());
auto* func = b.Function("foo", ty.u32());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.u32(), core::BuiltinFn::kPack2X16Unorm, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %uint %9 PackUnorm2x16 %arg");
}
TEST_F(SpirvWriterTest, Builtin_Pack4X8Snorm) {
auto* arg = b.FunctionParam("arg", ty.vec4<f32>());
auto* func = b.Function("foo", ty.u32());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.u32(), core::BuiltinFn::kPack4X8Snorm, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %uint %9 PackSnorm4x8 %arg");
}
TEST_F(SpirvWriterTest, Builtin_Pack4X8Unorm) {
auto* arg = b.FunctionParam("arg", ty.vec4<f32>());
auto* func = b.Function("foo", ty.u32());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.u32(), core::BuiltinFn::kPack4X8Unorm, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %uint %9 PackUnorm4x8 %arg");
}
TEST_F(SpirvWriterTest, Builtin_Unpack2X16Float) {
auto* arg = b.FunctionParam("arg", ty.u32());
auto* func = b.Function("foo", ty.vec2<f32>());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec2<f32>(), core::BuiltinFn::kUnpack2X16Float, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %v2float %9 UnpackHalf2x16 %arg");
}
TEST_F(SpirvWriterTest, Builtin_Unpack2X16Snorm) {
auto* arg = b.FunctionParam("arg", ty.u32());
auto* func = b.Function("foo", ty.vec2<f32>());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec2<f32>(), core::BuiltinFn::kUnpack2X16Snorm, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %v2float %9 UnpackSnorm2x16 %arg");
}
TEST_F(SpirvWriterTest, Builtin_Unpack2X16Unorm) {
auto* arg = b.FunctionParam("arg", ty.u32());
auto* func = b.Function("foo", ty.vec2<f32>());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec2<f32>(), core::BuiltinFn::kUnpack2X16Unorm, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %v2float %9 UnpackUnorm2x16 %arg");
}
TEST_F(SpirvWriterTest, Builtin_Unpack4X8Snorm) {
auto* arg = b.FunctionParam("arg", ty.u32());
auto* func = b.Function("foo", ty.vec4<f32>());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec4<f32>(), core::BuiltinFn::kUnpack4X8Snorm, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %v4float %9 UnpackSnorm4x8 %arg");
}
TEST_F(SpirvWriterTest, Builtin_Unpack4X8Unorm) {
auto* arg = b.FunctionParam("arg", ty.u32());
auto* func = b.Function("foo", ty.vec4<f32>());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec4<f32>(), core::BuiltinFn::kUnpack4X8Unorm, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %v4float %9 UnpackUnorm4x8 %arg");
}
TEST_F(SpirvWriterTest, Builtin_CountLeadingZeros_U32) {
auto* arg = b.FunctionParam("arg", ty.u32());
auto* func = b.Function("foo", ty.u32());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.u32(), core::BuiltinFn::kCountLeadingZeros, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
%6 = OpULessThanEqual %bool %arg %uint_65535
%9 = OpSelect %uint %6 %uint_16 %uint_0
%12 = OpShiftLeftLogical %uint %arg %9
%13 = OpULessThanEqual %bool %12 %uint_16777215
%15 = OpSelect %uint %13 %uint_8 %uint_0
%17 = OpShiftLeftLogical %uint %12 %15
%18 = OpULessThanEqual %bool %17 %uint_268435455
%20 = OpSelect %uint %18 %uint_4 %uint_0
%22 = OpShiftLeftLogical %uint %17 %20
%23 = OpULessThanEqual %bool %22 %uint_1073741823
%25 = OpSelect %uint %23 %uint_2 %uint_0
%27 = OpShiftLeftLogical %uint %22 %25
%28 = OpULessThanEqual %bool %27 %uint_2147483647
%30 = OpSelect %uint %28 %uint_1 %uint_0
%32 = OpIEqual %bool %27 %uint_0
%33 = OpSelect %uint %32 %uint_1 %uint_0
%34 = OpBitwiseOr %uint %30 %33
%35 = OpBitwiseOr %uint %25 %34
%36 = OpBitwiseOr %uint %20 %35
%37 = OpBitwiseOr %uint %15 %36
%38 = OpBitwiseOr %uint %9 %37
%result = OpIAdd %uint %38 %33
)");
}
TEST_F(SpirvWriterTest, Builtin_CountLeadingZeros_I32) {
auto* arg = b.FunctionParam("arg", ty.i32());
auto* func = b.Function("foo", ty.i32());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.i32(), core::BuiltinFn::kCountLeadingZeros, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
%7 = OpBitcast %uint %arg
%8 = OpULessThanEqual %bool %7 %uint_65535
%11 = OpSelect %uint %8 %uint_16 %uint_0
%14 = OpShiftLeftLogical %uint %7 %11
%15 = OpULessThanEqual %bool %14 %uint_16777215
%17 = OpSelect %uint %15 %uint_8 %uint_0
%19 = OpShiftLeftLogical %uint %14 %17
%20 = OpULessThanEqual %bool %19 %uint_268435455
%22 = OpSelect %uint %20 %uint_4 %uint_0
%24 = OpShiftLeftLogical %uint %19 %22
%25 = OpULessThanEqual %bool %24 %uint_1073741823
%27 = OpSelect %uint %25 %uint_2 %uint_0
%29 = OpShiftLeftLogical %uint %24 %27
%30 = OpULessThanEqual %bool %29 %uint_2147483647
%32 = OpSelect %uint %30 %uint_1 %uint_0
%34 = OpIEqual %bool %29 %uint_0
%35 = OpSelect %uint %34 %uint_1 %uint_0
%36 = OpBitwiseOr %uint %32 %35
%37 = OpBitwiseOr %uint %27 %36
%38 = OpBitwiseOr %uint %22 %37
%39 = OpBitwiseOr %uint %17 %38
%40 = OpBitwiseOr %uint %11 %39
%41 = OpIAdd %uint %40 %35
%result = OpBitcast %int %41
)");
}
TEST_F(SpirvWriterTest, Builtin_CountLeadingZeros_Vec2U32) {
auto* arg = b.FunctionParam("arg", ty.vec2<u32>());
auto* func = b.Function("foo", ty.vec2<u32>());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec2<u32>(), core::BuiltinFn::kCountLeadingZeros, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%8 = OpConstantComposite %v2uint %uint_65535 %uint_65535");
EXPECT_INST("%13 = OpConstantComposite %v2uint %uint_16 %uint_16");
EXPECT_INST("%15 = OpConstantNull %v2uint");
EXPECT_INST("%18 = OpConstantComposite %v2uint %uint_16777215 %uint_16777215");
EXPECT_INST("%21 = OpConstantComposite %v2uint %uint_8 %uint_8");
EXPECT_INST("%25 = OpConstantComposite %v2uint %uint_268435455 %uint_268435455");
EXPECT_INST("%28 = OpConstantComposite %v2uint %uint_4 %uint_4");
EXPECT_INST("%32 = OpConstantComposite %v2uint %uint_1073741823 %uint_1073741823");
EXPECT_INST("%35 = OpConstantComposite %v2uint %uint_2 %uint_2");
EXPECT_INST("%39 = OpConstantComposite %v2uint %uint_2147483647 %uint_2147483647");
EXPECT_INST("%42 = OpConstantComposite %v2uint %uint_1 %uint_1");
EXPECT_INST(R"(
%7 = OpULessThanEqual %v2bool %arg %8
%12 = OpSelect %v2uint %7 %13 %15
%16 = OpShiftLeftLogical %v2uint %arg %12
%17 = OpULessThanEqual %v2bool %16 %18
%20 = OpSelect %v2uint %17 %21 %15
%23 = OpShiftLeftLogical %v2uint %16 %20
%24 = OpULessThanEqual %v2bool %23 %25
%27 = OpSelect %v2uint %24 %28 %15
%30 = OpShiftLeftLogical %v2uint %23 %27
%31 = OpULessThanEqual %v2bool %30 %32
%34 = OpSelect %v2uint %31 %35 %15
%37 = OpShiftLeftLogical %v2uint %30 %34
%38 = OpULessThanEqual %v2bool %37 %39
%41 = OpSelect %v2uint %38 %42 %15
%44 = OpIEqual %v2bool %37 %15
%45 = OpSelect %v2uint %44 %42 %15
%46 = OpBitwiseOr %v2uint %41 %45
%47 = OpBitwiseOr %v2uint %34 %46
%48 = OpBitwiseOr %v2uint %27 %47
%49 = OpBitwiseOr %v2uint %20 %48
%50 = OpBitwiseOr %v2uint %12 %49
%result = OpIAdd %v2uint %50 %45
)");
}
TEST_F(SpirvWriterTest, Builtin_CountTrailingZeros_U32) {
auto* arg = b.FunctionParam("arg", ty.u32());
auto* func = b.Function("foo", ty.u32());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.u32(), core::BuiltinFn::kCountTrailingZeros, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
%6 = OpBitwiseAnd %uint %arg %uint_65535
%8 = OpIEqual %bool %6 %uint_0
%11 = OpSelect %uint %8 %uint_16 %uint_0
%13 = OpShiftRightLogical %uint %arg %11
%14 = OpBitwiseAnd %uint %13 %uint_255
%16 = OpIEqual %bool %14 %uint_0
%17 = OpSelect %uint %16 %uint_8 %uint_0
%19 = OpShiftRightLogical %uint %13 %17
%20 = OpBitwiseAnd %uint %19 %uint_15
%22 = OpIEqual %bool %20 %uint_0
%23 = OpSelect %uint %22 %uint_4 %uint_0
%25 = OpShiftRightLogical %uint %19 %23
%26 = OpBitwiseAnd %uint %25 %uint_3
%28 = OpIEqual %bool %26 %uint_0
%29 = OpSelect %uint %28 %uint_2 %uint_0
%31 = OpShiftRightLogical %uint %25 %29
%32 = OpBitwiseAnd %uint %31 %uint_1
%34 = OpIEqual %bool %32 %uint_0
%35 = OpSelect %uint %34 %uint_1 %uint_0
%36 = OpIEqual %bool %31 %uint_0
%37 = OpSelect %uint %36 %uint_1 %uint_0
%38 = OpBitwiseOr %uint %29 %35
%39 = OpBitwiseOr %uint %23 %38
%40 = OpBitwiseOr %uint %17 %39
%41 = OpBitwiseOr %uint %11 %40
%result = OpIAdd %uint %41 %37
)");
}
TEST_F(SpirvWriterTest, Builtin_CountTrailingZeros_I32) {
auto* arg = b.FunctionParam("arg", ty.i32());
auto* func = b.Function("foo", ty.i32());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.i32(), core::BuiltinFn::kCountTrailingZeros, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
%7 = OpBitcast %uint %arg
%8 = OpBitwiseAnd %uint %7 %uint_65535
%10 = OpIEqual %bool %8 %uint_0
%13 = OpSelect %uint %10 %uint_16 %uint_0
%15 = OpShiftRightLogical %uint %7 %13
%16 = OpBitwiseAnd %uint %15 %uint_255
%18 = OpIEqual %bool %16 %uint_0
%19 = OpSelect %uint %18 %uint_8 %uint_0
%21 = OpShiftRightLogical %uint %15 %19
%22 = OpBitwiseAnd %uint %21 %uint_15
%24 = OpIEqual %bool %22 %uint_0
%25 = OpSelect %uint %24 %uint_4 %uint_0
%27 = OpShiftRightLogical %uint %21 %25
%28 = OpBitwiseAnd %uint %27 %uint_3
%30 = OpIEqual %bool %28 %uint_0
%31 = OpSelect %uint %30 %uint_2 %uint_0
%33 = OpShiftRightLogical %uint %27 %31
%34 = OpBitwiseAnd %uint %33 %uint_1
%36 = OpIEqual %bool %34 %uint_0
%37 = OpSelect %uint %36 %uint_1 %uint_0
%38 = OpIEqual %bool %33 %uint_0
%39 = OpSelect %uint %38 %uint_1 %uint_0
%40 = OpBitwiseOr %uint %31 %37
%41 = OpBitwiseOr %uint %25 %40
%42 = OpBitwiseOr %uint %19 %41
%43 = OpBitwiseOr %uint %13 %42
%44 = OpIAdd %uint %43 %39
%result = OpBitcast %int %44
)");
}
TEST_F(SpirvWriterTest, Builtin_CountTrailingZeros_Vec2U32) {
auto* arg = b.FunctionParam("arg", ty.vec2<u32>());
auto* func = b.Function("foo", ty.vec2<u32>());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec2<u32>(), core::BuiltinFn::kCountTrailingZeros, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%8 = OpConstantComposite %v2uint %uint_65535 %uint_65535");
EXPECT_INST("%11 = OpConstantNull %v2uint");
EXPECT_INST("%15 = OpConstantComposite %v2uint %uint_16 %uint_16");
EXPECT_INST("%19 = OpConstantComposite %v2uint %uint_255 %uint_255");
EXPECT_INST("%23 = OpConstantComposite %v2uint %uint_8 %uint_8");
EXPECT_INST("%27 = OpConstantComposite %v2uint %uint_15 %uint_15");
EXPECT_INST("%31 = OpConstantComposite %v2uint %uint_4 %uint_4");
EXPECT_INST("%35 = OpConstantComposite %v2uint %uint_3 %uint_3");
EXPECT_INST("%39 = OpConstantComposite %v2uint %uint_2 %uint_2");
EXPECT_INST("%43 = OpConstantComposite %v2uint %uint_1 %uint_1");
EXPECT_INST(R"(
%7 = OpBitwiseAnd %v2uint %arg %8
%10 = OpIEqual %v2bool %7 %11
%14 = OpSelect %v2uint %10 %15 %11
%17 = OpShiftRightLogical %v2uint %arg %14
%18 = OpBitwiseAnd %v2uint %17 %19
%21 = OpIEqual %v2bool %18 %11
%22 = OpSelect %v2uint %21 %23 %11
%25 = OpShiftRightLogical %v2uint %17 %22
%26 = OpBitwiseAnd %v2uint %25 %27
%29 = OpIEqual %v2bool %26 %11
%30 = OpSelect %v2uint %29 %31 %11
%33 = OpShiftRightLogical %v2uint %25 %30
%34 = OpBitwiseAnd %v2uint %33 %35
%37 = OpIEqual %v2bool %34 %11
%38 = OpSelect %v2uint %37 %39 %11
%41 = OpShiftRightLogical %v2uint %33 %38
%42 = OpBitwiseAnd %v2uint %41 %43
%45 = OpIEqual %v2bool %42 %11
%46 = OpSelect %v2uint %45 %43 %11
%47 = OpIEqual %v2bool %41 %11
%48 = OpSelect %v2uint %47 %43 %11
%49 = OpBitwiseOr %v2uint %38 %46
%50 = OpBitwiseOr %v2uint %30 %49
%51 = OpBitwiseOr %v2uint %22 %50
%52 = OpBitwiseOr %v2uint %14 %51
%result = OpIAdd %v2uint %52 %48
)");
}
TEST_F(SpirvWriterTest, Builtin_FirstLeadingBit_U32) {
auto* arg = b.FunctionParam("arg", ty.u32());
auto* func = b.Function("foo", ty.u32());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.u32(), core::BuiltinFn::kFirstLeadingBit, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
%6 = OpBitwiseAnd %uint %arg %uint_4294901760
%8 = OpIEqual %bool %6 %uint_0
%11 = OpSelect %uint %8 %uint_0 %uint_16
%13 = OpShiftRightLogical %uint %arg %11
%14 = OpBitwiseAnd %uint %13 %uint_65280
%16 = OpIEqual %bool %14 %uint_0
%17 = OpSelect %uint %16 %uint_0 %uint_8
%19 = OpShiftRightLogical %uint %13 %17
%20 = OpBitwiseAnd %uint %19 %uint_240
%22 = OpIEqual %bool %20 %uint_0
%23 = OpSelect %uint %22 %uint_0 %uint_4
%25 = OpShiftRightLogical %uint %19 %23
%26 = OpBitwiseAnd %uint %25 %uint_12
%28 = OpIEqual %bool %26 %uint_0
%29 = OpSelect %uint %28 %uint_0 %uint_2
%31 = OpShiftRightLogical %uint %25 %29
%32 = OpBitwiseAnd %uint %31 %uint_2
%33 = OpIEqual %bool %32 %uint_0
%34 = OpSelect %uint %33 %uint_0 %uint_1
%36 = OpBitwiseOr %uint %29 %34
%37 = OpBitwiseOr %uint %23 %36
%38 = OpBitwiseOr %uint %17 %37
%39 = OpBitwiseOr %uint %11 %38
%40 = OpIEqual %bool %31 %uint_0
%result = OpSelect %uint %40 %uint_4294967295 %39
)");
}
TEST_F(SpirvWriterTest, Builtin_FirstLeadingBit_I32) {
auto* arg = b.FunctionParam("arg", ty.i32());
auto* func = b.Function("foo", ty.i32());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.i32(), core::BuiltinFn::kFirstLeadingBit, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
%7 = OpBitcast %uint %arg
%8 = OpNot %uint %7
%9 = OpULessThan %bool %7 %uint_2147483648
%12 = OpSelect %uint %9 %7 %8
%13 = OpBitwiseAnd %uint %12 %uint_4294901760
%15 = OpIEqual %bool %13 %uint_0
%17 = OpSelect %uint %15 %uint_0 %uint_16
%19 = OpShiftRightLogical %uint %12 %17
%20 = OpBitwiseAnd %uint %19 %uint_65280
%22 = OpIEqual %bool %20 %uint_0
%23 = OpSelect %uint %22 %uint_0 %uint_8
%25 = OpShiftRightLogical %uint %19 %23
%26 = OpBitwiseAnd %uint %25 %uint_240
%28 = OpIEqual %bool %26 %uint_0
%29 = OpSelect %uint %28 %uint_0 %uint_4
%31 = OpShiftRightLogical %uint %25 %29
%32 = OpBitwiseAnd %uint %31 %uint_12
%34 = OpIEqual %bool %32 %uint_0
%35 = OpSelect %uint %34 %uint_0 %uint_2
%37 = OpShiftRightLogical %uint %31 %35
%38 = OpBitwiseAnd %uint %37 %uint_2
%39 = OpIEqual %bool %38 %uint_0
%40 = OpSelect %uint %39 %uint_0 %uint_1
%42 = OpBitwiseOr %uint %35 %40
%43 = OpBitwiseOr %uint %29 %42
%44 = OpBitwiseOr %uint %23 %43
%45 = OpBitwiseOr %uint %17 %44
%46 = OpIEqual %bool %37 %uint_0
%47 = OpSelect %uint %46 %uint_4294967295 %45
%result = OpBitcast %int %47
)");
}
TEST_F(SpirvWriterTest, Builtin_FirstLeadingBit_Vec2U32) {
auto* arg = b.FunctionParam("arg", ty.vec2<u32>());
auto* func = b.Function("foo", ty.vec2<u32>());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec2<u32>(), core::BuiltinFn::kFirstLeadingBit, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%8 = OpConstantComposite %v2uint %uint_4294901760 %uint_4294901760");
EXPECT_INST("%11 = OpConstantNull %v2uint");
EXPECT_INST("%15 = OpConstantComposite %v2uint %uint_16 %uint_16");
EXPECT_INST("%19 = OpConstantComposite %v2uint %uint_65280 %uint_65280");
EXPECT_INST("%23 = OpConstantComposite %v2uint %uint_8 %uint_8");
EXPECT_INST("%27 = OpConstantComposite %v2uint %uint_240 %uint_240");
EXPECT_INST("%31 = OpConstantComposite %v2uint %uint_4 %uint_4");
EXPECT_INST("%35 = OpConstantComposite %v2uint %uint_12 %uint_12");
EXPECT_INST("%39 = OpConstantComposite %v2uint %uint_2 %uint_2");
EXPECT_INST("%45 = OpConstantComposite %v2uint %uint_1 %uint_1");
EXPECT_INST("%53 = OpConstantComposite %v2uint %uint_4294967295 %uint_4294967295");
EXPECT_INST(R"(
%7 = OpBitwiseAnd %v2uint %arg %8
%10 = OpIEqual %v2bool %7 %11
%14 = OpSelect %v2uint %10 %11 %15
%17 = OpShiftRightLogical %v2uint %arg %14
%18 = OpBitwiseAnd %v2uint %17 %19
%21 = OpIEqual %v2bool %18 %11
%22 = OpSelect %v2uint %21 %11 %23
%25 = OpShiftRightLogical %v2uint %17 %22
%26 = OpBitwiseAnd %v2uint %25 %27
%29 = OpIEqual %v2bool %26 %11
%30 = OpSelect %v2uint %29 %11 %31
%33 = OpShiftRightLogical %v2uint %25 %30
%34 = OpBitwiseAnd %v2uint %33 %35
%37 = OpIEqual %v2bool %34 %11
%38 = OpSelect %v2uint %37 %11 %39
%41 = OpShiftRightLogical %v2uint %33 %38
%42 = OpBitwiseAnd %v2uint %41 %39
%43 = OpIEqual %v2bool %42 %11
%44 = OpSelect %v2uint %43 %11 %45
%47 = OpBitwiseOr %v2uint %38 %44
%48 = OpBitwiseOr %v2uint %30 %47
%49 = OpBitwiseOr %v2uint %22 %48
%50 = OpBitwiseOr %v2uint %14 %49
%51 = OpIEqual %v2bool %41 %11
%result = OpSelect %v2uint %51 %53 %50
)");
}
TEST_F(SpirvWriterTest, Builtin_FirstTrailingBit_U32) {
auto* arg = b.FunctionParam("arg", ty.u32());
auto* func = b.Function("foo", ty.u32());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.u32(), core::BuiltinFn::kFirstTrailingBit, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
%6 = OpBitwiseAnd %uint %arg %uint_65535
%8 = OpIEqual %bool %6 %uint_0
%11 = OpSelect %uint %8 %uint_16 %uint_0
%13 = OpShiftRightLogical %uint %arg %11
%14 = OpBitwiseAnd %uint %13 %uint_255
%16 = OpIEqual %bool %14 %uint_0
%17 = OpSelect %uint %16 %uint_8 %uint_0
%19 = OpShiftRightLogical %uint %13 %17
%20 = OpBitwiseAnd %uint %19 %uint_15
%22 = OpIEqual %bool %20 %uint_0
%23 = OpSelect %uint %22 %uint_4 %uint_0
%25 = OpShiftRightLogical %uint %19 %23
%26 = OpBitwiseAnd %uint %25 %uint_3
%28 = OpIEqual %bool %26 %uint_0
%29 = OpSelect %uint %28 %uint_2 %uint_0
%31 = OpShiftRightLogical %uint %25 %29
%32 = OpBitwiseAnd %uint %31 %uint_1
%34 = OpIEqual %bool %32 %uint_0
%35 = OpSelect %uint %34 %uint_1 %uint_0
%36 = OpBitwiseOr %uint %29 %35
%37 = OpBitwiseOr %uint %23 %36
%38 = OpBitwiseOr %uint %17 %37
%39 = OpBitwiseOr %uint %11 %38
%40 = OpIEqual %bool %31 %uint_0
%result = OpSelect %uint %40 %uint_4294967295 %39
)");
}
TEST_F(SpirvWriterTest, Builtin_FirstTrailingBit_I32) {
auto* arg = b.FunctionParam("arg", ty.i32());
auto* func = b.Function("foo", ty.i32());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.i32(), core::BuiltinFn::kFirstTrailingBit, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
%7 = OpBitcast %uint %arg
%8 = OpBitwiseAnd %uint %7 %uint_65535
%10 = OpIEqual %bool %8 %uint_0
%13 = OpSelect %uint %10 %uint_16 %uint_0
%15 = OpShiftRightLogical %uint %7 %13
%16 = OpBitwiseAnd %uint %15 %uint_255
%18 = OpIEqual %bool %16 %uint_0
%19 = OpSelect %uint %18 %uint_8 %uint_0
%21 = OpShiftRightLogical %uint %15 %19
%22 = OpBitwiseAnd %uint %21 %uint_15
%24 = OpIEqual %bool %22 %uint_0
%25 = OpSelect %uint %24 %uint_4 %uint_0
%27 = OpShiftRightLogical %uint %21 %25
%28 = OpBitwiseAnd %uint %27 %uint_3
%30 = OpIEqual %bool %28 %uint_0
%31 = OpSelect %uint %30 %uint_2 %uint_0
%33 = OpShiftRightLogical %uint %27 %31
%34 = OpBitwiseAnd %uint %33 %uint_1
%36 = OpIEqual %bool %34 %uint_0
%37 = OpSelect %uint %36 %uint_1 %uint_0
%38 = OpBitwiseOr %uint %31 %37
%39 = OpBitwiseOr %uint %25 %38
%40 = OpBitwiseOr %uint %19 %39
%41 = OpBitwiseOr %uint %13 %40
%42 = OpIEqual %bool %33 %uint_0
%43 = OpSelect %uint %42 %uint_4294967295 %41
%result = OpBitcast %int %43
)");
}
TEST_F(SpirvWriterTest, Builtin_FirstTrailingBit_Vec2U32) {
auto* arg = b.FunctionParam("arg", ty.vec2<u32>());
auto* func = b.Function("foo", ty.vec2<u32>());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec2<u32>(), core::BuiltinFn::kFirstTrailingBit, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%8 = OpConstantComposite %v2uint %uint_65535 %uint_65535");
EXPECT_INST("%11 = OpConstantNull %v2uint");
EXPECT_INST("%15 = OpConstantComposite %v2uint %uint_16 %uint_16");
EXPECT_INST("%19 = OpConstantComposite %v2uint %uint_255 %uint_255");
EXPECT_INST("%23 = OpConstantComposite %v2uint %uint_8 %uint_8");
EXPECT_INST("%27 = OpConstantComposite %v2uint %uint_15 %uint_15");
EXPECT_INST("%31 = OpConstantComposite %v2uint %uint_4 %uint_4");
EXPECT_INST("%35 = OpConstantComposite %v2uint %uint_3 %uint_3");
EXPECT_INST("%39 = OpConstantComposite %v2uint %uint_2 %uint_2");
EXPECT_INST("%43 = OpConstantComposite %v2uint %uint_1 %uint_1");
EXPECT_INST("%53 = OpConstantComposite %v2uint %uint_4294967295 %uint_4294967295");
EXPECT_INST(R"(
%7 = OpBitwiseAnd %v2uint %arg %8
%10 = OpIEqual %v2bool %7 %11
%14 = OpSelect %v2uint %10 %15 %11
%17 = OpShiftRightLogical %v2uint %arg %14
%18 = OpBitwiseAnd %v2uint %17 %19
%21 = OpIEqual %v2bool %18 %11
%22 = OpSelect %v2uint %21 %23 %11
%25 = OpShiftRightLogical %v2uint %17 %22
%26 = OpBitwiseAnd %v2uint %25 %27
%29 = OpIEqual %v2bool %26 %11
%30 = OpSelect %v2uint %29 %31 %11
%33 = OpShiftRightLogical %v2uint %25 %30
%34 = OpBitwiseAnd %v2uint %33 %35
%37 = OpIEqual %v2bool %34 %11
%38 = OpSelect %v2uint %37 %39 %11
%41 = OpShiftRightLogical %v2uint %33 %38
%42 = OpBitwiseAnd %v2uint %41 %43
%45 = OpIEqual %v2bool %42 %11
%46 = OpSelect %v2uint %45 %43 %11
%47 = OpBitwiseOr %v2uint %38 %46
%48 = OpBitwiseOr %v2uint %30 %47
%49 = OpBitwiseOr %v2uint %22 %48
%50 = OpBitwiseOr %v2uint %14 %49
%51 = OpIEqual %v2bool %41 %11
%result = OpSelect %v2uint %51 %53 %50
)");
}
TEST_F(SpirvWriterTest, Builtin_Saturate_F32) {
auto* arg = b.FunctionParam("arg", ty.f32());
auto* func = b.Function("foo", ty.f32());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.f32(), core::BuiltinFn::kSaturate, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %float %7 NClamp %arg %float_0 %float_1");
}
TEST_F(SpirvWriterTest, Builtin_Saturate_Vec4h) {
auto* arg = b.FunctionParam("arg", ty.vec4<f16>());
auto* func = b.Function("foo", ty.vec4<f16>());
func->SetParams({arg});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec4<f16>(), core::BuiltinFn::kSaturate, arg);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%9 = OpConstantNull %v4half");
EXPECT_INST(
"%10 = OpConstantComposite %v4half %half_0x1p_0 %half_0x1p_0 %half_0x1p_0 %half_0x1p_0");
EXPECT_INST("%result = OpExtInst %v4half %8 NClamp %arg %9 %10");
}
// Tests for builtins with the signature: T = func(T, T)
using Builtin_2arg = SpirvWriterTestWithParam<BuiltinTestCase>;
TEST_P(Builtin_2arg, Scalar) {
auto params = GetParam();
auto* func = b.Function("foo", ty.void_());
b.Append(func->Block(), [&] {
b.Call(MakeScalarType(params.type), params.function, MakeScalarValue(params.type),
MakeScalarValue(params.type));
b.Return(func);
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(params.spirv_inst);
}
TEST_P(Builtin_2arg, Vector) {
auto params = GetParam();
auto* func = b.Function("foo", ty.void_());
b.Append(func->Block(), [&] {
b.Call(MakeVectorType(params.type), params.function, MakeVectorValue(params.type),
MakeVectorValue(params.type));
b.Return(func);
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(params.spirv_inst);
}
INSTANTIATE_TEST_SUITE_P(SpirvWriterTest,
Builtin_2arg,
testing::Values(BuiltinTestCase{kF32, core::BuiltinFn::kAtan2, "Atan2"},
BuiltinTestCase{kF32, core::BuiltinFn::kMax, "FMax"},
BuiltinTestCase{kI32, core::BuiltinFn::kMax, "SMax"},
BuiltinTestCase{kU32, core::BuiltinFn::kMax, "UMax"},
BuiltinTestCase{kF32, core::BuiltinFn::kMin, "FMin"},
BuiltinTestCase{kI32, core::BuiltinFn::kMin, "SMin"},
BuiltinTestCase{kU32, core::BuiltinFn::kMin, "UMin"},
BuiltinTestCase{kF32, core::BuiltinFn::kPow, "Pow"},
BuiltinTestCase{kF16, core::BuiltinFn::kPow, "Pow"},
BuiltinTestCase{kF32, core::BuiltinFn::kStep, "Step"},
BuiltinTestCase{kF16, core::BuiltinFn::kStep, "Step"}));
TEST_F(SpirvWriterTest, Builtin_Cross_vec3f) {
auto* arg1 = b.FunctionParam("arg1", ty.vec3<f32>());
auto* arg2 = b.FunctionParam("arg2", ty.vec3<f32>());
auto* func = b.Function("foo", ty.vec3<f32>());
func->SetParams({arg1, arg2});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec3<f32>(), core::BuiltinFn::kCross, arg1, arg2);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %v3float %9 Cross %arg1 %arg2");
}
TEST_F(SpirvWriterTest, Builtin_Distance_vec2f) {
auto* arg1 = b.FunctionParam("arg1", MakeVectorType(kF32));
auto* arg2 = b.FunctionParam("arg2", MakeVectorType(kF32));
auto* func = b.Function("foo", MakeScalarType(kF32));
func->SetParams({arg1, arg2});
b.Append(func->Block(), [&] {
auto* result = b.Call(MakeScalarType(kF32), core::BuiltinFn::kDistance, arg1, arg2);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %float %9 Distance %arg1 %arg2");
}
TEST_F(SpirvWriterTest, Builtin_Distance_vec3h) {
auto* arg1 = b.FunctionParam("arg1", MakeVectorType(kF16));
auto* arg2 = b.FunctionParam("arg2", MakeVectorType(kF16));
auto* func = b.Function("foo", MakeScalarType(kF16));
func->SetParams({arg1, arg2});
b.Append(func->Block(), [&] {
auto* result = b.Call(MakeScalarType(kF16), core::BuiltinFn::kDistance, arg1, arg2);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %half %9 Distance %arg1 %arg2");
}
TEST_F(SpirvWriterTest, Builtin_Dot_vec4f) {
auto* arg1 = b.FunctionParam("arg1", ty.vec4<f32>());
auto* arg2 = b.FunctionParam("arg2", ty.vec4<f32>());
auto* func = b.Function("foo", ty.f32());
func->SetParams({arg1, arg2});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.f32(), core::BuiltinFn::kDot, arg1, arg2);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpDot %float %arg1 %arg2");
}
TEST_F(SpirvWriterTest, Builtin_Dot_vec2i) {
auto* arg1 = b.FunctionParam("arg1", ty.vec2<i32>());
auto* arg2 = b.FunctionParam("arg2", ty.vec2<i32>());
auto* func = b.Function("foo", ty.i32());
func->SetParams({arg1, arg2});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.i32(), core::BuiltinFn::kDot, arg1, arg2);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
%8 = OpCompositeExtract %int %arg1 0
%9 = OpCompositeExtract %int %arg2 0
%10 = OpIMul %int %8 %9
%11 = OpCompositeExtract %int %arg1 1
%12 = OpCompositeExtract %int %arg2 1
%13 = OpIMul %int %11 %12
%result = OpIAdd %int %10 %13
)");
}
TEST_F(SpirvWriterTest, Builtin_Dot_vec4u) {
auto* arg1 = b.FunctionParam("arg1", ty.vec4<u32>());
auto* arg2 = b.FunctionParam("arg2", ty.vec4<u32>());
auto* func = b.Function("foo", ty.u32());
func->SetParams({arg1, arg2});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.u32(), core::BuiltinFn::kDot, arg1, arg2);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
%8 = OpCompositeExtract %uint %arg1 0
%9 = OpCompositeExtract %uint %arg2 0
%10 = OpIMul %uint %8 %9
%11 = OpCompositeExtract %uint %arg1 1
%12 = OpCompositeExtract %uint %arg2 1
%13 = OpIMul %uint %11 %12
%14 = OpIAdd %uint %10 %13
%15 = OpCompositeExtract %uint %arg1 2
%16 = OpCompositeExtract %uint %arg2 2
%17 = OpIMul %uint %15 %16
%18 = OpIAdd %uint %14 %17
%19 = OpCompositeExtract %uint %arg1 3
%20 = OpCompositeExtract %uint %arg2 3
%21 = OpIMul %uint %19 %20
%result = OpIAdd %uint %18 %21
)");
}
TEST_F(SpirvWriterTest, Builtin_Ldexp_F32) {
auto* arg1 = b.FunctionParam("arg1", ty.f32());
auto* arg2 = b.FunctionParam("arg2", ty.i32());
auto* func = b.Function("foo", ty.f32());
func->SetParams({arg1, arg2});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.f32(), core::BuiltinFn::kLdexp, arg1, arg2);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %float %9 Ldexp %arg1 %arg2");
}
TEST_F(SpirvWriterTest, Builtin_Ldexp_F16) {
auto* arg1 = b.FunctionParam("arg1", ty.f16());
auto* arg2 = b.FunctionParam("arg2", ty.i32());
auto* func = b.Function("foo", ty.f16());
func->SetParams({arg1, arg2});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.f16(), core::BuiltinFn::kLdexp, arg1, arg2);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %half %9 Ldexp %arg1 %arg2");
}
TEST_F(SpirvWriterTest, Builtin_Ldexp_Vec2_F32) {
auto* arg1 = b.FunctionParam("arg1", ty.vec2<f32>());
auto* arg2 = b.FunctionParam("arg2", ty.vec2<i32>());
auto* func = b.Function("foo", ty.vec2<f32>());
func->SetParams({arg1, arg2});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec2<f32>(), core::BuiltinFn::kLdexp, arg1, arg2);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %v2float %11 Ldexp %arg1 %arg2");
}
TEST_F(SpirvWriterTest, Builtin_Ldexp_Vec3_F16) {
auto* arg1 = b.FunctionParam("arg1", ty.vec3<f16>());
auto* arg2 = b.FunctionParam("arg2", ty.vec3<i32>());
auto* func = b.Function("foo", ty.vec3<f16>());
func->SetParams({arg1, arg2});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec3<f16>(), core::BuiltinFn::kLdexp, arg1, arg2);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %v3half %11 Ldexp %arg1 %arg2");
}
TEST_F(SpirvWriterTest, Builtin_Reflect_F32) {
auto* arg1 = b.FunctionParam("arg1", ty.vec3<f32>());
auto* arg2 = b.FunctionParam("arg2", ty.vec3<f32>());
auto* func = b.Function("foo", ty.vec3<f32>());
func->SetParams({arg1, arg2});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec3<f32>(), core::BuiltinFn::kReflect, arg1, arg2);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %v3float %9 Reflect %arg1 %arg2");
}
TEST_F(SpirvWriterTest, Builtin_Reflect_F16) {
auto* arg1 = b.FunctionParam("arg1", ty.vec4<f16>());
auto* arg2 = b.FunctionParam("arg2", ty.vec4<f16>());
auto* func = b.Function("foo", ty.vec4<f16>());
func->SetParams({arg1, arg2});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec4<f16>(), core::BuiltinFn::kReflect, arg1, arg2);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %v4half %9 Reflect %arg1 %arg2");
}
// Tests for builtins with the signature: T = func(T, T, T)
using Builtin_3arg = SpirvWriterTestWithParam<BuiltinTestCase>;
TEST_P(Builtin_3arg, Scalar) {
auto params = GetParam();
auto* func = b.Function("foo", ty.void_());
b.Append(func->Block(), [&] {
b.Call(MakeScalarType(params.type), params.function, MakeScalarValue(params.type),
MakeScalarValue(params.type), MakeScalarValue(params.type));
b.Return(func);
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(params.spirv_inst);
}
TEST_P(Builtin_3arg, Vector) {
auto params = GetParam();
auto* func = b.Function("foo", ty.void_());
b.Append(func->Block(), [&] {
b.Call(MakeVectorType(params.type), params.function, MakeVectorValue(params.type),
MakeVectorValue(params.type), MakeVectorValue(params.type));
b.Return(func);
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(params.spirv_inst);
}
INSTANTIATE_TEST_SUITE_P(
SpirvWriterTest,
Builtin_3arg,
testing::Values(BuiltinTestCase{kF32, core::BuiltinFn::kClamp, "NClamp"},
BuiltinTestCase{kF32, core::BuiltinFn::kFma, "Fma"},
BuiltinTestCase{kF16, core::BuiltinFn::kFma, "Fma"},
BuiltinTestCase{kF32, core::BuiltinFn::kMix, "Mix"},
BuiltinTestCase{kF16, core::BuiltinFn::kMix, "Mix"},
BuiltinTestCase{kF32, core::BuiltinFn::kSmoothstep, "SmoothStep"},
BuiltinTestCase{kF16, core::BuiltinFn::kSmoothstep, "SmoothStep"}));
TEST_F(SpirvWriterTest, Builtin_Clamp_Scalar_I32) {
auto* value = b.FunctionParam("value", ty.i32());
auto* low = b.FunctionParam("low", ty.i32());
auto* high = b.FunctionParam("high", ty.i32());
auto* func = b.Function("foo", ty.i32());
func->SetParams({value, low, high});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.i32(), core::BuiltinFn::kClamp, value, low, high);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
%8 = OpExtInst %int %9 SMax %value %low
%result = OpExtInst %int %9 SMin %8 %high
)");
}
TEST_F(SpirvWriterTest, Builtin_Clamp_Scalar_U32) {
auto* value = b.FunctionParam("value", ty.u32());
auto* low = b.FunctionParam("low", ty.u32());
auto* high = b.FunctionParam("high", ty.u32());
auto* func = b.Function("foo", ty.u32());
func->SetParams({value, low, high});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.u32(), core::BuiltinFn::kClamp, value, low, high);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
%8 = OpExtInst %uint %9 UMax %value %low
%result = OpExtInst %uint %9 UMin %8 %high
)");
}
TEST_F(SpirvWriterTest, Builtin_Clamp_Vector_I32) {
auto* value = b.FunctionParam("value", ty.vec4<i32>());
auto* low = b.FunctionParam("low", ty.vec4<i32>());
auto* high = b.FunctionParam("high", ty.vec4<i32>());
auto* func = b.Function("foo", ty.vec4<i32>());
func->SetParams({value, low, high});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec4<i32>(), core::BuiltinFn::kClamp, value, low, high);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
%9 = OpExtInst %v4int %10 SMax %value %low
%result = OpExtInst %v4int %10 SMin %9 %high
)");
}
TEST_F(SpirvWriterTest, Builtin_Clamp_Vector_U32) {
auto* value = b.FunctionParam("value", ty.vec2<u32>());
auto* low = b.FunctionParam("low", ty.vec2<u32>());
auto* high = b.FunctionParam("high", ty.vec2<u32>());
auto* func = b.Function("foo", ty.vec2<u32>());
func->SetParams({value, low, high});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec2<u32>(), core::BuiltinFn::kClamp, value, low, high);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
%9 = OpExtInst %v2uint %10 UMax %value %low
%result = OpExtInst %v2uint %10 UMin %9 %high
)");
}
TEST_F(SpirvWriterTest, Builtin_ExtractBits_Scalar_I32) {
auto* arg = b.FunctionParam("arg", ty.i32());
auto* offset = b.FunctionParam("offset", ty.u32());
auto* count = b.FunctionParam("count", ty.u32());
auto* func = b.Function("foo", ty.i32());
func->SetParams({arg, offset, count});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.i32(), core::BuiltinFn::kExtractBits, arg, offset, count);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
%9 = OpExtInst %uint %10 UMin %offset %uint_32
%12 = OpISub %uint %uint_32 %9
%13 = OpExtInst %uint %10 UMin %count %12
%result = OpBitFieldSExtract %int %arg %9 %13
)");
}
TEST_F(SpirvWriterTest, Builtin_ExtractBits_Scalar_U32) {
auto* arg = b.FunctionParam("arg", ty.u32());
auto* offset = b.FunctionParam("offset", ty.u32());
auto* count = b.FunctionParam("count", ty.u32());
auto* func = b.Function("foo", ty.u32());
func->SetParams({arg, offset, count});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.u32(), core::BuiltinFn::kExtractBits, arg, offset, count);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
%8 = OpExtInst %uint %9 UMin %offset %uint_32
%11 = OpISub %uint %uint_32 %8
%12 = OpExtInst %uint %9 UMin %count %11
%result = OpBitFieldUExtract %uint %arg %8 %12
)");
}
TEST_F(SpirvWriterTest, Builtin_ExtractBits_Vector_I32) {
auto* arg = b.FunctionParam("arg", ty.vec4<i32>());
auto* offset = b.FunctionParam("offset", ty.u32());
auto* count = b.FunctionParam("count", ty.u32());
auto* func = b.Function("foo", ty.vec4<i32>());
func->SetParams({arg, offset, count});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec4<i32>(), core::BuiltinFn::kExtractBits, arg, offset, count);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
%10 = OpExtInst %uint %11 UMin %offset %uint_32
%13 = OpISub %uint %uint_32 %10
%14 = OpExtInst %uint %11 UMin %count %13
%result = OpBitFieldSExtract %v4int %arg %10 %14
)");
}
TEST_F(SpirvWriterTest, Builtin_ExtractBits_Vector_U32) {
auto* arg = b.FunctionParam("arg", ty.vec2<u32>());
auto* offset = b.FunctionParam("offset", ty.u32());
auto* count = b.FunctionParam("count", ty.u32());
auto* func = b.Function("foo", ty.vec2<u32>());
func->SetParams({arg, offset, count});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec2<u32>(), core::BuiltinFn::kExtractBits, arg, offset, count);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
%9 = OpExtInst %uint %10 UMin %offset %uint_32
%12 = OpISub %uint %uint_32 %9
%13 = OpExtInst %uint %10 UMin %count %12
%result = OpBitFieldUExtract %v2uint %arg %9 %13
)");
}
TEST_F(SpirvWriterTest, Builtin_InsertBits_Scalar_I32) {
auto* arg = b.FunctionParam("arg", ty.i32());
auto* newbits = b.FunctionParam("newbits", ty.i32());
auto* offset = b.FunctionParam("offset", ty.u32());
auto* count = b.FunctionParam("count", ty.u32());
auto* func = b.Function("foo", ty.i32());
func->SetParams({arg, newbits, offset, count});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.i32(), core::BuiltinFn::kInsertBits, arg, newbits, offset, count);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
%10 = OpExtInst %uint %11 UMin %offset %uint_32
%13 = OpISub %uint %uint_32 %10
%14 = OpExtInst %uint %11 UMin %count %13
%result = OpBitFieldInsert %int %arg %newbits %10 %14
)");
}
TEST_F(SpirvWriterTest, Builtin_InsertBits_Scalar_U32) {
auto* arg = b.FunctionParam("arg", ty.u32());
auto* newbits = b.FunctionParam("newbits", ty.u32());
auto* offset = b.FunctionParam("offset", ty.u32());
auto* count = b.FunctionParam("count", ty.u32());
auto* func = b.Function("foo", ty.u32());
func->SetParams({arg, newbits, offset, count});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.u32(), core::BuiltinFn::kInsertBits, arg, newbits, offset, count);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
%9 = OpExtInst %uint %10 UMin %offset %uint_32
%12 = OpISub %uint %uint_32 %9
%13 = OpExtInst %uint %10 UMin %count %12
%result = OpBitFieldInsert %uint %arg %newbits %9 %13
)");
}
TEST_F(SpirvWriterTest, Builtin_InsertBits_Vector_I32) {
auto* arg = b.FunctionParam("arg", ty.vec4<i32>());
auto* newbits = b.FunctionParam("newbits", ty.vec4<i32>());
auto* offset = b.FunctionParam("offset", ty.u32());
auto* count = b.FunctionParam("count", ty.u32());
auto* func = b.Function("foo", ty.vec4<i32>());
func->SetParams({arg, newbits, offset, count});
b.Append(func->Block(), [&] {
auto* result =
b.Call(ty.vec4<i32>(), core::BuiltinFn::kInsertBits, arg, newbits, offset, count);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
%11 = OpExtInst %uint %12 UMin %offset %uint_32
%14 = OpISub %uint %uint_32 %11
%15 = OpExtInst %uint %12 UMin %count %14
%result = OpBitFieldInsert %v4int %arg %newbits %11 %15
)");
}
TEST_F(SpirvWriterTest, Builtin_InsertBits_Vector_U32) {
auto* arg = b.FunctionParam("arg", ty.vec2<u32>());
auto* newbits = b.FunctionParam("newbits", ty.vec2<u32>());
auto* offset = b.FunctionParam("offset", ty.u32());
auto* count = b.FunctionParam("count", ty.u32());
auto* func = b.Function("foo", ty.vec2<u32>());
func->SetParams({arg, newbits, offset, count});
b.Append(func->Block(), [&] {
auto* result =
b.Call(ty.vec2<u32>(), core::BuiltinFn::kInsertBits, arg, newbits, offset, count);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
%10 = OpExtInst %uint %11 UMin %offset %uint_32
%13 = OpISub %uint %uint_32 %10
%14 = OpExtInst %uint %11 UMin %count %13
%result = OpBitFieldInsert %v2uint %arg %newbits %10 %14
)");
}
TEST_F(SpirvWriterTest, Builtin_FaceForward_F32) {
auto* arg1 = b.FunctionParam("arg1", ty.vec3<f32>());
auto* arg2 = b.FunctionParam("arg2", ty.vec3<f32>());
auto* arg3 = b.FunctionParam("arg3", ty.vec3<f32>());
auto* func = b.Function("foo", ty.vec3<f32>());
func->SetParams({arg1, arg2, arg3});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec3<f32>(), core::BuiltinFn::kFaceForward, arg1, arg2, arg3);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %v3float %10 FaceForward %arg1 %arg2 %arg3");
}
TEST_F(SpirvWriterTest, Builtin_FaceForward_F16) {
auto* arg1 = b.FunctionParam("arg1", ty.vec4<f16>());
auto* arg2 = b.FunctionParam("arg2", ty.vec4<f16>());
auto* arg3 = b.FunctionParam("arg3", ty.vec4<f16>());
auto* func = b.Function("foo", ty.vec4<f16>());
func->SetParams({arg1, arg2, arg3});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec4<f16>(), core::BuiltinFn::kFaceForward, arg1, arg2, arg3);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %v4half %10 FaceForward %arg1 %arg2 %arg3");
}
TEST_F(SpirvWriterTest, Builtin_Mix_VectorOperands_ScalarFactor) {
auto* arg1 = b.FunctionParam("arg1", ty.vec4<f32>());
auto* arg2 = b.FunctionParam("arg2", ty.vec4<f32>());
auto* factor = b.FunctionParam("factor", ty.f32());
auto* func = b.Function("foo", ty.vec4<f32>());
func->SetParams({arg1, arg2, factor});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec4<f32>(), core::BuiltinFn::kMix, arg1, arg2, factor);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%9 = OpCompositeConstruct %v4float %factor %factor %factor %factor");
EXPECT_INST("%result = OpExtInst %v4float %11 FMix %arg1 %arg2 %9");
}
TEST_F(SpirvWriterTest, Builtin_Mix_VectorOperands_VectorFactor) {
auto* arg1 = b.FunctionParam("arg1", ty.vec4<f32>());
auto* arg2 = b.FunctionParam("arg2", ty.vec4<f32>());
auto* factor = b.FunctionParam("factor", ty.vec4<f32>());
auto* func = b.Function("foo", ty.vec4<f32>());
func->SetParams({arg1, arg2, factor});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec4<f32>(), core::BuiltinFn::kMix, arg1, arg2, factor);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %v4float %10 FMix %arg1 %arg2 %factor");
}
TEST_F(SpirvWriterTest, Builtin_Refract_F32) {
auto* arg1 = b.FunctionParam("arg1", ty.vec4<f32>());
auto* arg2 = b.FunctionParam("arg2", ty.vec4<f32>());
auto* i = b.FunctionParam("i", ty.f32());
auto* func = b.Function("foo", ty.vec4<f32>());
func->SetParams({arg1, arg2, i});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec4<f32>(), core::BuiltinFn::kRefract, arg1, arg2, i);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %v4float %10 Refract %arg1 %arg2 %i");
}
TEST_F(SpirvWriterTest, Builtin_Refract_F16) {
auto* arg1 = b.FunctionParam("arg1", ty.vec4<f16>());
auto* arg2 = b.FunctionParam("arg2", ty.vec4<f16>());
auto* i = b.FunctionParam("i", ty.f16());
auto* func = b.Function("foo", ty.vec4<f16>());
func->SetParams({arg1, arg2, i});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec4<f16>(), core::BuiltinFn::kRefract, arg1, arg2, i);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpExtInst %v4half %10 Refract %arg1 %arg2 %i");
}
TEST_F(SpirvWriterTest, Builtin_Select_ScalarCondition_ScalarOperands) {
auto* argf = b.FunctionParam("argf", ty.i32());
auto* argt = b.FunctionParam("argt", ty.i32());
auto* cond = b.FunctionParam("cond", ty.bool_());
auto* func = b.Function("foo", ty.i32());
func->SetParams({argf, argt, cond});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.i32(), core::BuiltinFn::kSelect, argf, argt, cond);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpSelect %int %cond %argt %argf");
}
TEST_F(SpirvWriterTest, Builtin_Select_VectorCondition_VectorOperands) {
auto* argf = b.FunctionParam("argf", ty.vec4<i32>());
auto* argt = b.FunctionParam("argt", ty.vec4<i32>());
auto* cond = b.FunctionParam("cond", ty.vec4<bool>());
auto* func = b.Function("foo", ty.vec4<i32>());
func->SetParams({argf, argt, cond});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec4<i32>(), core::BuiltinFn::kSelect, argf, argt, cond);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%result = OpSelect %v4int %cond %argt %argf");
}
TEST_F(SpirvWriterTest, Builtin_Select_ScalarCondition_VectorOperands) {
auto* argf = b.FunctionParam("argf", ty.vec4<i32>());
auto* argt = b.FunctionParam("argt", ty.vec4<i32>());
auto* cond = b.FunctionParam("cond", ty.bool_());
auto* func = b.Function("foo", ty.vec4<i32>());
func->SetParams({argf, argt, cond});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec4<i32>(), core::BuiltinFn::kSelect, argf, argt, cond);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%11 = OpCompositeConstruct %v4bool %cond %cond %cond %cond");
EXPECT_INST("%result = OpSelect %v4int %11 %argt %argf");
}
TEST_F(SpirvWriterTest, Builtin_StorageBarrier) {
auto* func = b.Function("foo", ty.void_());
b.Append(func->Block(), [&] {
b.Call(ty.void_(), core::BuiltinFn::kStorageBarrier);
b.Return(func);
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("OpControlBarrier %uint_2 %uint_2 %uint_72");
}
TEST_F(SpirvWriterTest, Builtin_TextureBarrier) {
auto* func = b.Function("foo", ty.void_());
b.Append(func->Block(), [&] {
b.Call(ty.void_(), core::BuiltinFn::kTextureBarrier);
b.Return(func);
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("OpControlBarrier %uint_2 %uint_2 %uint_2056");
}
TEST_F(SpirvWriterTest, Builtin_WorkgroupBarrier) {
auto* func = b.Function("foo", ty.void_());
b.Append(func->Block(), [&] {
b.Call(ty.void_(), core::BuiltinFn::kWorkgroupBarrier);
b.Return(func);
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("OpControlBarrier %uint_2 %uint_2 %uint_264");
}
TEST_F(SpirvWriterTest, Builtin_SubgroupBallot) {
auto* func = b.Function("foo", ty.vec4<u32>());
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.vec4<u32>(), core::BuiltinFn::kSubgroupBallot);
mod.SetName(result, "result");
b.Return(func, result);
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("OpCapability GroupNonUniformBallot");
EXPECT_INST("%result = OpGroupNonUniformBallot %v4uint %uint_3 %true");
}
TEST_F(SpirvWriterTest, Builtin_SubgroupBroadcastValueF32) {
auto* func = b.Function("foo", ty.f32());
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.f32(), core::BuiltinFn::kSubgroupBroadcast, 1_f, 0_u);
mod.SetName(result, "result");
b.Return(func, result);
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("OpCapability GroupNonUniformBallot");
EXPECT_INST("%result = OpGroupNonUniformBroadcast %float %uint_3 %float_1 %uint_0");
}
TEST_F(SpirvWriterTest, Builtin_SubgroupBroadcastValueI32) {
auto* func = b.Function("foo", ty.i32());
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.i32(), core::BuiltinFn::kSubgroupBroadcast, 1_i, 0_u);
mod.SetName(result, "result");
b.Return(func, result);
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("OpCapability GroupNonUniformBallot");
EXPECT_INST("%result = OpGroupNonUniformBroadcast %int %uint_3 %int_1 %uint_0");
}
TEST_F(SpirvWriterTest, Builtin_SubgroupBroadcastValueU32) {
auto* func = b.Function("foo", ty.u32());
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.u32(), core::BuiltinFn::kSubgroupBroadcast, 1_u, 0_u);
mod.SetName(result, "result");
b.Return(func, result);
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("OpCapability GroupNonUniformBallot");
EXPECT_INST("%result = OpGroupNonUniformBroadcast %uint %uint_3 %uint_1 %uint_0");
}
TEST_F(SpirvWriterTest, Builtin_ArrayLength) {
auto* var = b.Var("var", ty.ptr(storage, ty.runtime_array(ty.i32())));
var->SetBindingPoint(0, 0);
mod.root_block->Append(var);
auto* func = b.Function("foo", ty.u32());
b.Append(func->Block(), [&] {
auto* ptr = b.Let("ptr", var);
auto* result = b.Call(ty.u32(), core::BuiltinFn::kArrayLength, ptr);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%1 = OpVariable %_ptr_StorageBuffer_tint_symbol_1 StorageBuffer");
EXPECT_INST("%result = OpArrayLength %uint %1 0");
}
TEST_F(SpirvWriterTest, Builtin_ArrayLength_WithStruct) {
auto* arr = ty.runtime_array(ty.i32());
auto* str = ty.Struct(mod.symbols.New("Buffer"), {
{mod.symbols.New("a"), ty.i32()},
{mod.symbols.New("b"), ty.i32()},
{mod.symbols.New("arr"), arr},
});
auto* var = b.Var("var", ty.ptr(storage, str));
var->SetBindingPoint(0, 0);
mod.root_block->Append(var);
auto* func = b.Function("foo", ty.u32());
b.Append(func->Block(), [&] {
auto* ptr = b.Let("ptr", b.Access(ty.ptr(storage, arr), var, 2_u));
auto* result = b.Call(ty.u32(), core::BuiltinFn::kArrayLength, ptr);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST("%var = OpVariable %_ptr_StorageBuffer_Buffer StorageBuffer");
EXPECT_INST("%result = OpArrayLength %uint %var 2");
}
////////////////////////////////////////////////////////////////////////////////
// DP4A builtins
////////////////////////////////////////////////////////////////////////////////
TEST_F(SpirvWriterTest, Builtin_Dot4I8Packed) {
auto* arg1 = b.FunctionParam("arg1", ty.u32());
auto* arg2 = b.FunctionParam("arg2", ty.u32());
auto* func = b.Function("foo", ty.i32());
func->SetParams({arg1, arg2});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.i32(), core::BuiltinFn::kDot4I8Packed, arg1, arg2);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
OpCapability DotProduct
OpCapability DotProductInput4x8BitPacked
OpExtension "SPV_KHR_integer_dot_product"
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %unused_entry_point "unused_entry_point"
OpExecutionMode %unused_entry_point LocalSize 1 1 1
; Debug Information
OpName %foo "foo" ; id %1
OpName %arg1 "arg1" ; id %4
OpName %arg2 "arg2" ; id %5
OpName %result "result" ; id %8
OpName %unused_entry_point "unused_entry_point" ; id %9
; Types, variables and constants
%int = OpTypeInt 32 1
%uint = OpTypeInt 32 0
%6 = OpTypeFunction %int %uint %uint
%void = OpTypeVoid
%11 = OpTypeFunction %void
; Function foo
%foo = OpFunction %int None %6
%arg1 = OpFunctionParameter %uint
%arg2 = OpFunctionParameter %uint
%7 = OpLabel
%result = OpSDot %int %arg1 %arg2 PackedVectorFormat4x8Bit
OpReturnValue %result
OpFunctionEnd
)");
}
TEST_F(SpirvWriterTest, Builtin_Dot4U8Packed) {
auto* arg1 = b.FunctionParam("arg1", ty.u32());
auto* arg2 = b.FunctionParam("arg2", ty.u32());
auto* func = b.Function("foo", ty.u32());
func->SetParams({arg1, arg2});
b.Append(func->Block(), [&] {
auto* result = b.Call(ty.u32(), core::BuiltinFn::kDot4U8Packed, arg1, arg2);
b.Return(func, result);
mod.SetName(result, "result");
});
ASSERT_TRUE(Generate()) << Error() << output_;
EXPECT_INST(R"(
OpCapability DotProduct
OpCapability DotProductInput4x8BitPacked
OpExtension "SPV_KHR_integer_dot_product"
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %unused_entry_point "unused_entry_point"
OpExecutionMode %unused_entry_point LocalSize 1 1 1
; Debug Information
OpName %foo "foo" ; id %1
OpName %arg1 "arg1" ; id %3
OpName %arg2 "arg2" ; id %4
OpName %result "result" ; id %7
OpName %unused_entry_point "unused_entry_point" ; id %8
; Types, variables and constants
%uint = OpTypeInt 32 0
%5 = OpTypeFunction %uint %uint %uint
%void = OpTypeVoid
%10 = OpTypeFunction %void
; Function foo
%foo = OpFunction %uint None %5
%arg1 = OpFunctionParameter %uint
%arg2 = OpFunctionParameter %uint
%6 = OpLabel
%result = OpUDot %uint %arg1 %arg2 PackedVectorFormat4x8Bit
OpReturnValue %result
OpFunctionEnd
)");
}
} // namespace
} // namespace tint::spirv::writer