blob: c856328ec2f5b002f1eb6b84279cb4fe18d53b62 [file] [log] [blame]
* Copyright 2021 Google LLC
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#include "include/core/SkTypes.h"
#include "src/sksl/SkSLPosition.h"
#include "src/sksl/ir/SkSLConstructor.h"
#include "src/sksl/ir/SkSLExpression.h"
#include "src/sksl/ir/SkSLIRNode.h"
#include "src/sksl/ir/SkSLType.h"
#include <memory>
#include <optional>
#include <utility>
namespace SkSL {
class Context;
* Represents the construction of a vector splat, such as `half3(n)`.
* These always contain exactly 1 scalar.
class ConstructorSplat final : public SingleArgumentConstructor {
inline static constexpr Kind kIRNodeKind = Kind::kConstructorSplat;
ConstructorSplat(Position pos, const Type& type, std::unique_ptr<Expression> arg)
: INHERITED(pos, kIRNodeKind, &type, std::move(arg)) {}
// The input argument must be scalar. A "splat" to a scalar type will be optimized into a no-op.
static std::unique_ptr<Expression> Make(const Context& context,
Position pos,
const Type& type,
std::unique_ptr<Expression> arg);
std::unique_ptr<Expression> clone(Position pos) const override {
return std::make_unique<ConstructorSplat>(pos, this->type(), argument()->clone());
bool supportsConstantValues() const override {
return true;
std::optional<double> getConstantValue(int n) const override {
SkASSERT(n >= 0 && n < this->type().columns());
return this->argument()->getConstantValue(0);
using INHERITED = SingleArgumentConstructor;
} // namespace SkSL