chromium/third_party/skia/src/shaders/SkPerlinNoiseShaderImpl.cpp

/*
 * Copyright 2013 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#include "src/shaders/SkPerlinNoiseShaderImpl.h"

#include "include/core/SkColor.h"
#include "include/core/SkColorSpace.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkShader.h"
#include "include/effects/SkPerlinNoiseShader.h"
#include "src/base/SkArenaAlloc.h"
#include "src/core/SkEffectPriv.h"
#include "src/core/SkRasterPipeline.h"
#include "src/core/SkRasterPipelineOpContexts.h"
#include "src/core/SkRasterPipelineOpList.h"
#include "src/core/SkReadBuffer.h"
#include "src/core/SkWriteBuffer.h"
#include "src/shaders/SkPerlinNoiseShaderType.h"

#include <optional>

SkPerlinNoiseShader::SkPerlinNoiseShader(SkPerlinNoiseShaderType type,
                                         SkScalar baseFrequencyX,
                                         SkScalar baseFrequencyY,
                                         int numOctaves,
                                         SkScalar seed,
                                         const SkISize* tileSize)
        : … { … }

sk_sp<SkFlattenable> SkPerlinNoiseShader::CreateProc(SkReadBuffer& buffer) { … }

void SkPerlinNoiseShader::flatten(SkWriteBuffer& buffer) const { … }

bool SkPerlinNoiseShader::appendStages(const SkStageRec& rec,
                                       const SkShaders::MatrixRec& mRec) const { … }

///////////////////////////////////////////////////////////////////////////////////////////////////

static bool valid_input(
        SkScalar baseX, SkScalar baseY, int numOctaves, const SkISize* tileSize, SkScalar seed) { … }

void SkRegisterPerlinNoiseShaderFlattenable() { … }

namespace SkShaders {
sk_sp<SkShader> MakeFractalNoise(SkScalar baseFrequencyX,
                                 SkScalar baseFrequencyY,
                                 int numOctaves,
                                 SkScalar seed,
                                 const SkISize* tileSize) { … }

sk_sp<SkShader> MakeTurbulence(SkScalar baseFrequencyX,
                               SkScalar baseFrequencyY,
                               int numOctaves,
                               SkScalar seed,
                               const SkISize* tileSize) { … }

}  // namespace SkShaders