blob: 41451c140b1df5ca3013ca57a4b494917da78bf1 [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 "src/sksl/SkSLConstantFolder.h"
#include "src/sksl/ir/SkSLConstructorSplat.h"
namespace SkSL {
std::unique_ptr<Expression> ConstructorSplat::Make(const Context& context,
int offset,
const Type& type,
std::unique_ptr<Expression> arg) {
SkASSERT(arg->type() == type.componentType());
// A "splat" to a scalar type is a no-op and can be eliminated.
if (type.isScalar()) {
return arg;
if (context.fConfig->fSettings.fOptimize) {
// Replace constant variables with their corresponding values, so `float3(five)` can
// compile down to `float3(5.0)` (the latter is a compile-time constant).
arg = ConstantFolder::MakeConstantValueForVariable(std::move(arg));
return std::make_unique<ConstructorSplat>(offset, type, std::move(arg));
} // namespace SkSL