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/*
* Copyright 2012 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkMorphologyImageFilter.h"
#include "SkBitmap.h"
#include "SkColorPriv.h"
#include "SkOpts.h"
#include "SkReadBuffer.h"
#include "SkRect.h"
#include "SkSpecialImage.h"
#include "SkWriteBuffer.h"
#if SK_SUPPORT_GPU
#include "GrContext.h"
#include "GrFixedClip.h"
#include "GrRenderTargetContext.h"
#include "GrTexture.h"
#include "GrTextureProxy.h"
#include "SkGr.h"
#include "effects/Gr1DKernelEffect.h"
#include "effects/GrProxyMove.h"
#include "glsl/GrGLSLFragmentProcessor.h"
#include "glsl/GrGLSLFragmentShaderBuilder.h"
#include "glsl/GrGLSLProgramDataManager.h"
#include "glsl/GrGLSLUniformHandler.h"
#include "../private/GrGLSL.h"
#endif
sk_sp<SkImageFilter> SkDilateImageFilter::Make(int radiusX, int radiusY,
sk_sp<SkImageFilter> input,
const CropRect* cropRect) {
if (radiusX < 0 || radiusY < 0) {
return nullptr;
}
return sk_sp<SkImageFilter>(new SkDilateImageFilter(radiusX, radiusY,
std::move(input),
cropRect));
}
sk_sp<SkImageFilter> SkErodeImageFilter::Make(int radiusX, int radiusY,
sk_sp<SkImageFilter> input,
const CropRect* cropRect) {
if (radiusX < 0 || radiusY < 0) {
return nullptr;
}
return sk_sp<SkImageFilter>(new SkErodeImageFilter(radiusX, radiusY,
std::move(input),
cropRect));
}
SkMorphologyImageFilter::SkMorphologyImageFilter(int radiusX,
int radiusY,
sk_sp<SkImageFilter> input,
const CropRect* cropRect)
: INHERITED(&input, 1, cropRect)
, fRadius(SkISize::Make(radiusX, radiusY)) {
}
void SkMorphologyImageFilter::flatten(SkWriteBuffer& buffer) const {
this->INHERITED::flatten(buffer);
buffer.writeInt(fRadius.fWidth);
buffer.writeInt(fRadius.fHeight);
}
static void call_proc_X(SkMorphologyImageFilter::Proc procX,
const SkBitmap& src, SkBitmap* dst,
int radiusX, const SkIRect& bounds) {
procX(src.getAddr32(bounds.left(), bounds.top()), dst->getAddr32(0, 0),
radiusX, bounds.width(), bounds.height(),
src.rowBytesAsPixels(), dst->rowBytesAsPixels());
}
static void call_proc_Y(SkMorphologyImageFilter::Proc procY,
const SkPMColor* src, int srcRowBytesAsPixels, SkBitmap* dst,
int radiusY, const SkIRect& bounds) {
procY(src, dst->getAddr32(0, 0),
radiusY, bounds.height(), bounds.width(),
srcRowBytesAsPixels, dst->rowBytesAsPixels());
}
SkRect SkMorphologyImageFilter::computeFastBounds(const SkRect& src) const {
SkRect bounds = this->getInput(0) ? this->getInput(0)->computeFastBounds(src) : src;
bounds.outset(SkIntToScalar(fRadius.width()), SkIntToScalar(fRadius.height()));
return bounds;
}
SkIRect SkMorphologyImageFilter::onFilterNodeBounds(const SkIRect& src, const SkMatrix& ctm,
MapDirection) const {
SkVector radius = SkVector::Make(SkIntToScalar(this->radius().width()),
SkIntToScalar(this->radius().height()));
ctm.mapVectors(&radius, 1);
return src.makeOutset(SkScalarCeilToInt(radius.x()), SkScalarCeilToInt(radius.y()));
}
sk_sp<SkFlattenable> SkErodeImageFilter::CreateProc(SkReadBuffer& buffer) {
SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1);
const int width = buffer.readInt();
const int height = buffer.readInt();
return Make(width, height, common.getInput(0), &common.cropRect());
}
sk_sp<SkFlattenable> SkDilateImageFilter::CreateProc(SkReadBuffer& buffer) {
SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1);
const int width = buffer.readInt();
const int height = buffer.readInt();
return Make(width, height, common.getInput(0), &common.cropRect());
}
#ifndef SK_IGNORE_TO_STRING
void SkErodeImageFilter::toString(SkString* str) const {
str->appendf("SkErodeImageFilter: (");
str->appendf("radius: (%d,%d)", this->radius().fWidth, this->radius().fHeight);
str->append(")");
}
#endif
#ifndef SK_IGNORE_TO_STRING
void SkDilateImageFilter::toString(SkString* str) const {
str->appendf("SkDilateImageFilter: (");
str->appendf("radius: (%d,%d)", this->radius().fWidth, this->radius().fHeight);
str->append(")");
}
#endif
#if SK_SUPPORT_GPU
///////////////////////////////////////////////////////////////////////////////
/**
* Morphology effects. Depending upon the type of morphology, either the
* component-wise min (Erode_Type) or max (Dilate_Type) of all pixels in the
* kernel is selected as the new color. The new color is modulated by the input
* color.
*/
class GrMorphologyEffect : public Gr1DKernelEffect {
public:
enum MorphologyType {
kErode_MorphologyType,
kDilate_MorphologyType,
};
static sk_sp<GrFragmentProcessor> Make(sk_sp<GrTextureProxy> proxy,
Direction dir, int radius, MorphologyType type) {
return sk_sp<GrFragmentProcessor>(new GrMorphologyEffect(std::move(proxy),
dir, radius, type));
}
static sk_sp<GrFragmentProcessor> Make(sk_sp<GrTextureProxy> proxy, Direction dir, int radius,
MorphologyType type, const float bounds[2]) {
return sk_sp<GrFragmentProcessor>(new GrMorphologyEffect(std::move(proxy),
dir, radius, type, bounds));
}
~GrMorphologyEffect() override;
MorphologyType type() const { return fType; }
bool useRange() const { return fUseRange; }
const float* range() const { return fRange; }
const char* name() const override { return "Morphology"; }
protected:
MorphologyType fType;
bool fUseRange;
float fRange[2];
private:
GrGLSLFragmentProcessor* onCreateGLSLInstance() const override;
void onGetGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder*) const override;
bool onIsEqual(const GrFragmentProcessor&) const override;
GrMorphologyEffect(sk_sp<GrTextureProxy>,
Direction, int radius, MorphologyType);
GrMorphologyEffect(sk_sp<GrTextureProxy>,
Direction, int radius, MorphologyType, const float bounds[2]);
GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
typedef Gr1DKernelEffect INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
class GrGLMorphologyEffect : public GrGLSLFragmentProcessor {
public:
void emitCode(EmitArgs&) override;
static inline void GenKey(const GrProcessor&, const GrShaderCaps&, GrProcessorKeyBuilder*);
protected:
void onSetData(const GrGLSLProgramDataManager&, const GrFragmentProcessor&) override;
private:
GrGLSLProgramDataManager::UniformHandle fPixelSizeUni;
GrGLSLProgramDataManager::UniformHandle fRangeUni;
typedef GrGLSLFragmentProcessor INHERITED;
};
void GrGLMorphologyEffect::emitCode(EmitArgs& args) {
const GrMorphologyEffect& me = args.fFp.cast<GrMorphologyEffect>();
GrGLSLUniformHandler* uniformHandler = args.fUniformHandler;
fPixelSizeUni = uniformHandler->addUniform(kFragment_GrShaderFlag,
kFloat_GrSLType, kDefault_GrSLPrecision,
"PixelSize");
const char* pixelSizeInc = uniformHandler->getUniformCStr(fPixelSizeUni);
fRangeUni = uniformHandler->addUniform(kFragment_GrShaderFlag,
kVec2f_GrSLType, kDefault_GrSLPrecision,
"Range");
const char* range = uniformHandler->getUniformCStr(fRangeUni);
GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
SkString coords2D = fragBuilder->ensureCoords2D(args.fTransformedCoords[0]);
const char* func;
switch (me.type()) {
case GrMorphologyEffect::kErode_MorphologyType:
fragBuilder->codeAppendf("\t\t%s = vec4(1, 1, 1, 1);\n", args.fOutputColor);
func = "min";
break;
case GrMorphologyEffect::kDilate_MorphologyType:
fragBuilder->codeAppendf("\t\t%s = vec4(0, 0, 0, 0);\n", args.fOutputColor);
func = "max";
break;
default:
SkFAIL("Unexpected type");
func = ""; // suppress warning
break;
}
const char* dir;
switch (me.direction()) {
case Gr1DKernelEffect::kX_Direction:
dir = "x";
break;
case Gr1DKernelEffect::kY_Direction:
dir = "y";
break;
default:
SkFAIL("Unknown filter direction.");
dir = ""; // suppress warning
}
int width = GrMorphologyEffect::WidthFromRadius(me.radius());
// vec2 coord = coord2D;
fragBuilder->codeAppendf("\t\tvec2 coord = %s;\n", coords2D.c_str());
// coord.x -= radius * pixelSize;
fragBuilder->codeAppendf("\t\tcoord.%s -= %d.0 * %s; \n", dir, me.radius(), pixelSizeInc);
if (me.useRange()) {
// highBound = min(highBound, coord.x + (width-1) * pixelSize);
fragBuilder->codeAppendf("\t\tfloat highBound = min(%s.y, coord.%s + %f * %s);",
range, dir, float(width - 1), pixelSizeInc);
// coord.x = max(lowBound, coord.x);
fragBuilder->codeAppendf("\t\tcoord.%s = max(%s.x, coord.%s);", dir, range, dir);
}
fragBuilder->codeAppendf("\t\tfor (int i = 0; i < %d; i++) {\n", width);
fragBuilder->codeAppendf("\t\t\t%s = %s(%s, ", args.fOutputColor, func, args.fOutputColor);
fragBuilder->appendTextureLookup(args.fTexSamplers[0], "coord");
fragBuilder->codeAppend(");\n");
// coord.x += pixelSize;
fragBuilder->codeAppendf("\t\t\tcoord.%s += %s;\n", dir, pixelSizeInc);
if (me.useRange()) {
// coord.x = min(highBound, coord.x);
fragBuilder->codeAppendf("\t\t\tcoord.%s = min(highBound, coord.%s);", dir, dir);
}
fragBuilder->codeAppend("\t\t}\n");
fragBuilder->codeAppendf("%s *= %s;\n", args.fOutputColor, args.fInputColor);
}
void GrGLMorphologyEffect::GenKey(const GrProcessor& proc,
const GrShaderCaps&, GrProcessorKeyBuilder* b) {
const GrMorphologyEffect& m = proc.cast<GrMorphologyEffect>();
uint32_t key = static_cast<uint32_t>(m.radius());
key |= (m.type() << 8);
key |= (m.direction() << 9);
if (m.useRange()) {
key |= 1 << 10;
}
b->add32(key);
}
void GrGLMorphologyEffect::onSetData(const GrGLSLProgramDataManager& pdman,
const GrFragmentProcessor& proc) {
const GrMorphologyEffect& m = proc.cast<GrMorphologyEffect>();
GrTexture& texture = *m.textureSampler(0).peekTexture();
float pixelSize = 0.0f;
switch (m.direction()) {
case Gr1DKernelEffect::kX_Direction:
pixelSize = 1.0f / texture.width();
break;
case Gr1DKernelEffect::kY_Direction:
pixelSize = 1.0f / texture.height();
break;
default:
SkFAIL("Unknown filter direction.");
}
pdman.set1f(fPixelSizeUni, pixelSize);
if (m.useRange()) {
const float* range = m.range();
if (Gr1DKernelEffect::kY_Direction == m.direction() &&
texture.origin() == kBottomLeft_GrSurfaceOrigin) {
pdman.set2f(fRangeUni, 1.0f - (range[1]*pixelSize), 1.0f - (range[0]*pixelSize));
} else {
pdman.set2f(fRangeUni, range[0] * pixelSize, range[1] * pixelSize);
}
}
}
///////////////////////////////////////////////////////////////////////////////
GrMorphologyEffect::GrMorphologyEffect(sk_sp<GrTextureProxy> proxy,
Direction direction,
int radius,
MorphologyType type)
: INHERITED{ModulationFlags(proxy->config()), GR_PROXY_MOVE(proxy), direction, radius}
, fType(type)
, fUseRange(false) {
this->initClassID<GrMorphologyEffect>();
}
GrMorphologyEffect::GrMorphologyEffect(sk_sp<GrTextureProxy> proxy,
Direction direction,
int radius,
MorphologyType type,
const float range[2])
: INHERITED{ModulationFlags(proxy->config()), GR_PROXY_MOVE(proxy), direction, radius}
, fType(type)
, fUseRange(true) {
this->initClassID<GrMorphologyEffect>();
fRange[0] = range[0];
fRange[1] = range[1];
}
GrMorphologyEffect::~GrMorphologyEffect() {
}
void GrMorphologyEffect::onGetGLSLProcessorKey(const GrShaderCaps& caps,
GrProcessorKeyBuilder* b) const {
GrGLMorphologyEffect::GenKey(*this, caps, b);
}
GrGLSLFragmentProcessor* GrMorphologyEffect::onCreateGLSLInstance() const {
return new GrGLMorphologyEffect;
}
bool GrMorphologyEffect::onIsEqual(const GrFragmentProcessor& sBase) const {
const GrMorphologyEffect& s = sBase.cast<GrMorphologyEffect>();
return (this->radius() == s.radius() &&
this->direction() == s.direction() &&
this->useRange() == s.useRange() &&
this->type() == s.type());
}
///////////////////////////////////////////////////////////////////////////////
GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrMorphologyEffect);
#if GR_TEST_UTILS
sk_sp<GrFragmentProcessor> GrMorphologyEffect::TestCreate(GrProcessorTestData* d) {
int texIdx = d->fRandom->nextBool() ? GrProcessorUnitTest::kSkiaPMTextureIdx
: GrProcessorUnitTest::kAlphaTextureIdx;
sk_sp<GrTextureProxy> proxy = d->textureProxy(texIdx);
Direction dir = d->fRandom->nextBool() ? kX_Direction : kY_Direction;
static const int kMaxRadius = 10;
int radius = d->fRandom->nextRangeU(1, kMaxRadius);
MorphologyType type = d->fRandom->nextBool() ? GrMorphologyEffect::kErode_MorphologyType
: GrMorphologyEffect::kDilate_MorphologyType;
return GrMorphologyEffect::Make(std::move(proxy), dir, radius, type);
}
#endif
static void apply_morphology_rect(GrRenderTargetContext* renderTargetContext,
const GrClip& clip,
sk_sp<GrTextureProxy> proxy,
const SkIRect& srcRect,
const SkIRect& dstRect,
int radius,
GrMorphologyEffect::MorphologyType morphType,
const float bounds[2],
Gr1DKernelEffect::Direction direction) {
GrPaint paint;
paint.setGammaCorrect(renderTargetContext->isGammaCorrect());
paint.addColorFragmentProcessor(GrMorphologyEffect::Make(std::move(proxy),
direction, radius, morphType,
bounds));
paint.setPorterDuffXPFactory(SkBlendMode::kSrc);
renderTargetContext->fillRectToRect(clip, std::move(paint), GrAA::kNo, SkMatrix::I(),
SkRect::Make(dstRect), SkRect::Make(srcRect));
}
static void apply_morphology_rect_no_bounds(GrRenderTargetContext* renderTargetContext,
const GrClip& clip,
sk_sp<GrTextureProxy> proxy,
const SkIRect& srcRect,
const SkIRect& dstRect,
int radius,
GrMorphologyEffect::MorphologyType morphType,
Gr1DKernelEffect::Direction direction) {
GrPaint paint;
paint.setGammaCorrect(renderTargetContext->isGammaCorrect());
paint.addColorFragmentProcessor(GrMorphologyEffect::Make(std::move(proxy),
direction, radius, morphType));
paint.setPorterDuffXPFactory(SkBlendMode::kSrc);
renderTargetContext->fillRectToRect(clip, std::move(paint), GrAA::kNo, SkMatrix::I(),
SkRect::Make(dstRect), SkRect::Make(srcRect));
}
static void apply_morphology_pass(GrRenderTargetContext* renderTargetContext,
const GrClip& clip,
sk_sp<GrTextureProxy> textureProxy,
const SkIRect& srcRect,
const SkIRect& dstRect,
int radius,
GrMorphologyEffect::MorphologyType morphType,
Gr1DKernelEffect::Direction direction) {
float bounds[2] = { 0.0f, 1.0f };
SkIRect lowerSrcRect = srcRect, lowerDstRect = dstRect;
SkIRect middleSrcRect = srcRect, middleDstRect = dstRect;
SkIRect upperSrcRect = srcRect, upperDstRect = dstRect;
if (direction == Gr1DKernelEffect::kX_Direction) {
bounds[0] = SkIntToScalar(srcRect.left()) + 0.5f;
bounds[1] = SkIntToScalar(srcRect.right()) - 0.5f;
lowerSrcRect.fRight = srcRect.left() + radius;
lowerDstRect.fRight = dstRect.left() + radius;
upperSrcRect.fLeft = srcRect.right() - radius;
upperDstRect.fLeft = dstRect.right() - radius;
middleSrcRect.inset(radius, 0);
middleDstRect.inset(radius, 0);
} else {
bounds[0] = SkIntToScalar(srcRect.top()) + 0.5f;
bounds[1] = SkIntToScalar(srcRect.bottom()) - 0.5f;
lowerSrcRect.fBottom = srcRect.top() + radius;
lowerDstRect.fBottom = dstRect.top() + radius;
upperSrcRect.fTop = srcRect.bottom() - radius;
upperDstRect.fTop = dstRect.bottom() - radius;
middleSrcRect.inset(0, radius);
middleDstRect.inset(0, radius);
}
if (middleSrcRect.fLeft - middleSrcRect.fRight >= 0) {
// radius covers srcRect; use bounds over entire draw
apply_morphology_rect(renderTargetContext, clip, std::move(textureProxy),
srcRect, dstRect, radius, morphType, bounds, direction);
} else {
// Draw upper and lower margins with bounds; middle without.
apply_morphology_rect(renderTargetContext, clip, textureProxy,
lowerSrcRect, lowerDstRect, radius, morphType, bounds, direction);
apply_morphology_rect(renderTargetContext, clip, textureProxy,
upperSrcRect, upperDstRect, radius, morphType, bounds, direction);
apply_morphology_rect_no_bounds(renderTargetContext, clip, std::move(textureProxy),
middleSrcRect, middleDstRect, radius, morphType, direction);
}
}
static sk_sp<SkSpecialImage> apply_morphology(
GrContext* context,
SkSpecialImage* input,
const SkIRect& rect,
GrMorphologyEffect::MorphologyType morphType,
SkISize radius,
const SkImageFilter::OutputProperties& outputProperties) {
sk_sp<GrTextureProxy> srcTexture(input->asTextureProxyRef(context));
SkASSERT(srcTexture);
sk_sp<SkColorSpace> colorSpace = sk_ref_sp(outputProperties.colorSpace());
GrPixelConfig config = GrRenderableConfigForColorSpace(colorSpace.get());
// setup new clip
const GrFixedClip clip(SkIRect::MakeWH(srcTexture->width(), srcTexture->height()));
const SkIRect dstRect = SkIRect::MakeWH(rect.width(), rect.height());
SkIRect srcRect = rect;
SkASSERT(radius.width() > 0 || radius.height() > 0);
if (radius.fWidth > 0) {
sk_sp<GrRenderTargetContext> dstRTContext(context->makeDeferredRenderTargetContext(
SkBackingFit::kApprox, rect.width(), rect.height(), config, colorSpace));
if (!dstRTContext) {
return nullptr;
}
apply_morphology_pass(dstRTContext.get(), clip, std::move(srcTexture),
srcRect, dstRect, radius.fWidth, morphType,
Gr1DKernelEffect::kX_Direction);
SkIRect clearRect = SkIRect::MakeXYWH(dstRect.fLeft, dstRect.fBottom,
dstRect.width(), radius.fHeight);
GrColor clearColor = GrMorphologyEffect::kErode_MorphologyType == morphType
? SK_ColorWHITE
: SK_ColorTRANSPARENT;
dstRTContext->clear(&clearRect, clearColor, false);
srcTexture = dstRTContext->asTextureProxyRef();
srcRect = dstRect;
}
if (radius.fHeight > 0) {
sk_sp<GrRenderTargetContext> dstRTContext(context->makeDeferredRenderTargetContext(
SkBackingFit::kApprox, rect.width(), rect.height(), config, colorSpace));
if (!dstRTContext) {
return nullptr;
}
apply_morphology_pass(dstRTContext.get(), clip, std::move(srcTexture),
srcRect, dstRect, radius.fHeight, morphType,
Gr1DKernelEffect::kY_Direction);
srcTexture = dstRTContext->asTextureProxyRef();
}
return SkSpecialImage::MakeDeferredFromGpu(context,
SkIRect::MakeWH(rect.width(), rect.height()),
kNeedNewImageUniqueID_SpecialImage,
std::move(srcTexture), std::move(colorSpace),
&input->props());
}
#endif
sk_sp<SkSpecialImage> SkMorphologyImageFilter::onFilterImage(SkSpecialImage* source,
const Context& ctx,
SkIPoint* offset) const {
SkIPoint inputOffset = SkIPoint::Make(0, 0);
sk_sp<SkSpecialImage> input(this->filterInput(0, source, ctx, &inputOffset));
if (!input) {
return nullptr;
}
SkIRect bounds;
input = this->applyCropRect(this->mapContext(ctx), input.get(), &inputOffset, &bounds);
if (!input) {
return nullptr;
}
SkVector radius = SkVector::Make(SkIntToScalar(this->radius().width()),
SkIntToScalar(this->radius().height()));
ctx.ctm().mapVectors(&radius, 1);
int width = SkScalarFloorToInt(radius.fX);
int height = SkScalarFloorToInt(radius.fY);
if (width < 0 || height < 0) {
return nullptr;
}
SkIRect srcBounds = bounds;
srcBounds.offset(-inputOffset);
if (0 == width && 0 == height) {
offset->fX = bounds.left();
offset->fY = bounds.top();
return input->makeSubset(srcBounds);
}
#if SK_SUPPORT_GPU
if (source->isTextureBacked()) {
GrContext* context = source->getContext();
// Ensure the input is in the destination color space. Typically applyCropRect will have
// called pad_image to account for our dilation of bounds, so the result will already be
// moved to the destination color space. If a filter DAG avoids that, then we use this
// fall-back, which saves us from having to do the xform during the filter itself.
input = ImageToColorSpace(input.get(), ctx.outputProperties());
auto type = (kDilate_Op == this->op()) ? GrMorphologyEffect::kDilate_MorphologyType
: GrMorphologyEffect::kErode_MorphologyType;
sk_sp<SkSpecialImage> result(apply_morphology(context, input.get(), srcBounds, type,
SkISize::Make(width, height),
ctx.outputProperties()));
if (result) {
offset->fX = bounds.left();
offset->fY = bounds.top();
}
return result;
}
#endif
SkBitmap inputBM;
if (!input->getROPixels(&inputBM)) {
return nullptr;
}
if (inputBM.colorType() != kN32_SkColorType) {
return nullptr;
}
SkImageInfo info = SkImageInfo::Make(bounds.width(), bounds.height(),
inputBM.colorType(), inputBM.alphaType());
SkBitmap dst;
if (!dst.tryAllocPixels(info)) {
return nullptr;
}
SkMorphologyImageFilter::Proc procX, procY;
if (kDilate_Op == this->op()) {
procX = SkOpts::dilate_x;
procY = SkOpts::dilate_y;
} else {
procX = SkOpts::erode_x;
procY = SkOpts::erode_y;
}
if (width > 0 && height > 0) {
SkBitmap tmp;
if (!tmp.tryAllocPixels(info)) {
return nullptr;
}
call_proc_X(procX, inputBM, &tmp, width, srcBounds);
SkIRect tmpBounds = SkIRect::MakeWH(srcBounds.width(), srcBounds.height());
call_proc_Y(procY,
tmp.getAddr32(tmpBounds.left(), tmpBounds.top()), tmp.rowBytesAsPixels(),
&dst, height, tmpBounds);
} else if (width > 0) {
call_proc_X(procX, inputBM, &dst, width, srcBounds);
} else if (height > 0) {
call_proc_Y(procY,
inputBM.getAddr32(srcBounds.left(), srcBounds.top()),
inputBM.rowBytesAsPixels(),
&dst, height, srcBounds);
}
offset->fX = bounds.left();
offset->fY = bounds.top();
return SkSpecialImage::MakeFromRaster(SkIRect::MakeWH(bounds.width(), bounds.height()),
dst, &source->props());
}
sk_sp<SkImageFilter> SkMorphologyImageFilter::onMakeColorSpace(SkColorSpaceXformer* xformer) const {
SkASSERT(1 == this->countInputs());
if (!this->getInput(0)) {
return sk_ref_sp(const_cast<SkMorphologyImageFilter*>(this));
}
sk_sp<SkImageFilter> input = this->getInput(0)->makeColorSpace(xformer);
return (SkMorphologyImageFilter::kDilate_Op == this->op())
? SkDilateImageFilter::Make(fRadius.width(), fRadius.height(), std::move(input),
this->getCropRectIfSet())
: SkErodeImageFilter::Make(fRadius.width(), fRadius.height(), std::move(input),
this->getCropRectIfSet());
}