SkSLSampleUsage.cpp

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/*
 * Copyright 2020 Google LLC
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
#include "include/private/SkSLSampleUsage.h"
 
#include <algorithm>
 
namespace SkSL {
 
SampleUsage SampleUsage::merge(const SampleUsage& other) {
    // This function is only used in Analysis::MergeSampleUsageVisitor to determine the combined
    // SampleUsage for a child fp/shader/etc. We should never see matrix sampling here.
    SkASSERT(fKind != Kind::kUniformMatrix && other.fKind != Kind::kUniformMatrix);
 
    static_assert(Kind::kExplicit > Kind::kPassThrough);
    static_assert(Kind::kPassThrough > Kind::kNone);
    fKind = std::max(fKind, other.fKind);
 
    return *this;
}
 
}  // namespace SkSL