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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 "include/effects/SkMorphologyImageFilter.h"
- #include "include/core/SkBitmap.h"
- #include "include/core/SkRect.h"
- #include "include/private/SkColorData.h"
- #include "src/core/SkImageFilterPriv.h"
- #include "src/core/SkReadBuffer.h"
- #include "src/core/SkSpecialImage.h"
- #include "src/core/SkWriteBuffer.h"
- #if SK_SUPPORT_GPU
- #include "include/gpu/GrContext.h"
- #include "include/gpu/GrTexture.h"
- #include "include/private/GrRecordingContext.h"
- #include "src/gpu/GrContextPriv.h"
- #include "src/gpu/GrCoordTransform.h"
- #include "src/gpu/GrFixedClip.h"
- #include "src/gpu/GrRecordingContextPriv.h"
- #include "src/gpu/GrRenderTargetContext.h"
- #include "src/gpu/GrTextureProxy.h"
- #include "src/gpu/SkGr.h"
- #include "src/gpu/glsl/GrGLSLFragmentProcessor.h"
- #include "src/gpu/glsl/GrGLSLFragmentShaderBuilder.h"
- #include "src/gpu/glsl/GrGLSLProgramDataManager.h"
- #include "src/gpu/glsl/GrGLSLUniformHandler.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 SkIRect* inputRect) 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());
- }
- #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 GrFragmentProcessor {
- public:
- enum class Direction { kX, kY };
- enum class Type { kErode, kDilate };
- static std::unique_ptr<GrFragmentProcessor> Make(sk_sp<GrTextureProxy> proxy, Direction dir,
- int radius, Type type) {
- return std::unique_ptr<GrFragmentProcessor>(
- new GrMorphologyEffect(std::move(proxy), dir, radius, type, nullptr));
- }
- static std::unique_ptr<GrFragmentProcessor> Make(sk_sp<GrTextureProxy> proxy, Direction dir,
- int radius, Type type, const float bounds[2]) {
- return std::unique_ptr<GrFragmentProcessor>(
- new GrMorphologyEffect(std::move(proxy), dir, radius, type, bounds));
- }
- Type type() const { return fType; }
- bool useRange() const { return fUseRange; }
- const float* range() const { return fRange; }
- Direction direction() const { return fDirection; }
- int radius() const { return fRadius; }
- int width() const { return 2 * fRadius + 1; }
- const char* name() const override { return "Morphology"; }
- std::unique_ptr<GrFragmentProcessor> clone() const override {
- return std::unique_ptr<GrFragmentProcessor>(new GrMorphologyEffect(*this));
- }
- private:
- GrCoordTransform fCoordTransform;
- TextureSampler fTextureSampler;
- Direction fDirection;
- int fRadius;
- Type fType;
- bool fUseRange;
- float fRange[2];
- GrGLSLFragmentProcessor* onCreateGLSLInstance() const override;
- void onGetGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder*) const override;
- bool onIsEqual(const GrFragmentProcessor&) const override;
- const TextureSampler& onTextureSampler(int i) const override { return fTextureSampler; }
- GrMorphologyEffect(sk_sp<GrTextureProxy>, Direction, int radius, Type, const float range[2]);
- explicit GrMorphologyEffect(const GrMorphologyEffect&);
- GR_DECLARE_FRAGMENT_PROCESSOR_TEST
- typedef GrFragmentProcessor 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, kHalf_GrSLType, "PixelSize");
- const char* pixelSizeInc = uniformHandler->getUniformCStr(fPixelSizeUni);
- fRangeUni = uniformHandler->addUniform(kFragment_GrShaderFlag, kFloat2_GrSLType, "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::Type::kErode:
- fragBuilder->codeAppendf("\t\t%s = half4(1, 1, 1, 1);\n", args.fOutputColor);
- func = "min";
- break;
- case GrMorphologyEffect::Type::kDilate:
- fragBuilder->codeAppendf("\t\t%s = half4(0, 0, 0, 0);\n", args.fOutputColor);
- func = "max";
- break;
- default:
- SK_ABORT("Unexpected type");
- func = ""; // suppress warning
- break;
- }
- const char* dir;
- switch (me.direction()) {
- case GrMorphologyEffect::Direction::kX:
- dir = "x";
- break;
- case GrMorphologyEffect::Direction::kY:
- dir = "y";
- break;
- default:
- SK_ABORT("Unknown filter direction.");
- dir = ""; // suppress warning
- }
- int width = me.width();
- // float2 coord = coord2D;
- fragBuilder->codeAppendf("\t\tfloat2 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 |= (static_cast<uint32_t>(m.type()) << 8);
- key |= (static_cast<uint32_t>(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>();
- GrSurfaceProxy* proxy = m.textureSampler(0).proxy();
- GrTexture& texture = *proxy->peekTexture();
- float pixelSize = 0.0f;
- switch (m.direction()) {
- case GrMorphologyEffect::Direction::kX:
- pixelSize = 1.0f / texture.width();
- break;
- case GrMorphologyEffect::Direction::kY:
- pixelSize = 1.0f / texture.height();
- break;
- default:
- SK_ABORT("Unknown filter direction.");
- }
- pdman.set1f(fPixelSizeUni, pixelSize);
- if (m.useRange()) {
- const float* range = m.range();
- if (GrMorphologyEffect::Direction::kY == m.direction() &&
- proxy->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,
- Type type,
- const float range[2])
- : INHERITED(kGrMorphologyEffect_ClassID,
- ModulateForClampedSamplerOptFlags(proxy->config()))
- , fCoordTransform(proxy.get())
- , fTextureSampler(std::move(proxy))
- , fDirection(direction)
- , fRadius(radius)
- , fType(type)
- , fUseRange(SkToBool(range)) {
- // Make sure the sampler's ctor uses the clamp wrap mode
- SkASSERT(fTextureSampler.samplerState().wrapModeX() == GrSamplerState::WrapMode::kClamp &&
- fTextureSampler.samplerState().wrapModeY() == GrSamplerState::WrapMode::kClamp);
- this->addCoordTransform(&fCoordTransform);
- this->setTextureSamplerCnt(1);
- if (fUseRange) {
- fRange[0] = range[0];
- fRange[1] = range[1];
- }
- }
- GrMorphologyEffect::GrMorphologyEffect(const GrMorphologyEffect& that)
- : INHERITED(kGrMorphologyEffect_ClassID, that.optimizationFlags())
- , fCoordTransform(that.fCoordTransform)
- , fTextureSampler(that.fTextureSampler)
- , fDirection(that.fDirection)
- , fRadius(that.fRadius)
- , fType(that.fType)
- , fUseRange(that.fUseRange) {
- this->addCoordTransform(&fCoordTransform);
- this->setTextureSamplerCnt(1);
- if (that.fUseRange) {
- fRange[0] = that.fRange[0];
- fRange[1] = that.fRange[1];
- }
- }
- 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
- std::unique_ptr<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() ? Direction::kX : Direction::kY;
- static const int kMaxRadius = 10;
- int radius = d->fRandom->nextRangeU(1, kMaxRadius);
- Type type = d->fRandom->nextBool() ? GrMorphologyEffect::Type::kErode
- : GrMorphologyEffect::Type::kDilate;
- 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::Type morphType,
- const float bounds[2],
- GrMorphologyEffect::Direction direction) {
- GrPaint paint;
- 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::Type morphType,
- GrMorphologyEffect::Direction direction) {
- GrPaint paint;
- 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::Type morphType,
- GrMorphologyEffect::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 == GrMorphologyEffect::Direction::kX) {
- 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.width() <= 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(
- GrRecordingContext* context,
- SkSpecialImage* input,
- const SkIRect& rect,
- GrMorphologyEffect::Type 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());
- GrColorType colorType = SkColorTypeToGrColorType(outputProperties.colorType());
- // 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->priv().makeDeferredRenderTargetContext(
- SkBackingFit::kApprox,
- rect.width(),
- rect.height(),
- colorType,
- colorSpace,
- 1,
- GrMipMapped::kNo,
- kBottomLeft_GrSurfaceOrigin,
- nullptr,
- SkBudgeted::kYes,
- srcTexture->isProtected() ? GrProtected::kYes : GrProtected::kNo));
- if (!dstRTContext) {
- return nullptr;
- }
- apply_morphology_pass(dstRTContext.get(), clip, std::move(srcTexture), srcRect, dstRect,
- radius.fWidth, morphType, GrMorphologyEffect::Direction::kX);
- SkIRect clearRect = SkIRect::MakeXYWH(dstRect.fLeft, dstRect.fBottom,
- dstRect.width(), radius.fHeight);
- SkPMColor4f clearColor = GrMorphologyEffect::Type::kErode == morphType
- ? SK_PMColor4fWHITE : SK_PMColor4fTRANSPARENT;
- dstRTContext->clear(&clearRect, clearColor, GrRenderTargetContext::CanClearFullscreen::kNo);
- srcTexture = dstRTContext->asTextureProxyRef();
- srcRect = dstRect;
- }
- if (radius.fHeight > 0) {
- sk_sp<GrRenderTargetContext> dstRTContext(context->priv().makeDeferredRenderTargetContext(
- SkBackingFit::kApprox,
- rect.width(),
- rect.height(),
- colorType,
- colorSpace,
- 1,
- GrMipMapped::kNo,
- kBottomLeft_GrSurfaceOrigin,
- nullptr,
- SkBudgeted::kYes,
- srcTexture->isProtected() ? GrProtected::kYes : GrProtected::kNo));
- if (!dstRTContext) {
- return nullptr;
- }
- apply_morphology_pass(dstRTContext.get(), clip, std::move(srcTexture), srcRect, dstRect,
- radius.fHeight, morphType, GrMorphologyEffect::Direction::kY);
- srcTexture = dstRTContext->asTextureProxyRef();
- }
- return SkSpecialImage::MakeDeferredFromGpu(context,
- SkIRect::MakeWH(rect.width(), rect.height()),
- kNeedNewImageUniqueID_SpecialImage,
- std::move(srcTexture), std::move(colorSpace),
- &input->props());
- }
- #endif
- namespace {
- enum MorphType { kDilate, kErode };
- enum class MorphDirection { kX, kY };
- #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE2
- template<MorphType type, MorphDirection direction>
- static void morph(const SkPMColor* src, SkPMColor* dst,
- int radius, int width, int height, int srcStride, int dstStride) {
- const int srcStrideX = direction == MorphDirection::kX ? 1 : srcStride;
- const int dstStrideX = direction == MorphDirection::kX ? 1 : dstStride;
- const int srcStrideY = direction == MorphDirection::kX ? srcStride : 1;
- const int dstStrideY = direction == MorphDirection::kX ? dstStride : 1;
- radius = SkMin32(radius, width - 1);
- const SkPMColor* upperSrc = src + radius * srcStrideX;
- for (int x = 0; x < width; ++x) {
- const SkPMColor* lp = src;
- const SkPMColor* up = upperSrc;
- SkPMColor* dptr = dst;
- for (int y = 0; y < height; ++y) {
- __m128i extreme = (type == kDilate) ? _mm_setzero_si128()
- : _mm_set1_epi32(0xFFFFFFFF);
- for (const SkPMColor* p = lp; p <= up; p += srcStrideX) {
- __m128i src_pixel = _mm_cvtsi32_si128(*p);
- extreme = (type == kDilate) ? _mm_max_epu8(src_pixel, extreme)
- : _mm_min_epu8(src_pixel, extreme);
- }
- *dptr = _mm_cvtsi128_si32(extreme);
- dptr += dstStrideY;
- lp += srcStrideY;
- up += srcStrideY;
- }
- if (x >= radius) { src += srcStrideX; }
- if (x + radius < width - 1) { upperSrc += srcStrideX; }
- dst += dstStrideX;
- }
- }
- #elif defined(SK_ARM_HAS_NEON)
- template<MorphType type, MorphDirection direction>
- static void morph(const SkPMColor* src, SkPMColor* dst,
- int radius, int width, int height, int srcStride, int dstStride) {
- const int srcStrideX = direction == MorphDirection::kX ? 1 : srcStride;
- const int dstStrideX = direction == MorphDirection::kX ? 1 : dstStride;
- const int srcStrideY = direction == MorphDirection::kX ? srcStride : 1;
- const int dstStrideY = direction == MorphDirection::kX ? dstStride : 1;
- radius = SkMin32(radius, width - 1);
- const SkPMColor* upperSrc = src + radius * srcStrideX;
- for (int x = 0; x < width; ++x) {
- const SkPMColor* lp = src;
- const SkPMColor* up = upperSrc;
- SkPMColor* dptr = dst;
- for (int y = 0; y < height; ++y) {
- uint8x8_t extreme = vdup_n_u8(type == kDilate ? 0 : 255);
- for (const SkPMColor* p = lp; p <= up; p += srcStrideX) {
- uint8x8_t src_pixel = vreinterpret_u8_u32(vdup_n_u32(*p));
- extreme = (type == kDilate) ? vmax_u8(src_pixel, extreme)
- : vmin_u8(src_pixel, extreme);
- }
- *dptr = vget_lane_u32(vreinterpret_u32_u8(extreme), 0);
- dptr += dstStrideY;
- lp += srcStrideY;
- up += srcStrideY;
- }
- if (x >= radius) src += srcStrideX;
- if (x + radius < width - 1) upperSrc += srcStrideX;
- dst += dstStrideX;
- }
- }
- #else
- template<MorphType type, MorphDirection direction>
- static void morph(const SkPMColor* src, SkPMColor* dst,
- int radius, int width, int height, int srcStride, int dstStride) {
- const int srcStrideX = direction == MorphDirection::kX ? 1 : srcStride;
- const int dstStrideX = direction == MorphDirection::kX ? 1 : dstStride;
- const int srcStrideY = direction == MorphDirection::kX ? srcStride : 1;
- const int dstStrideY = direction == MorphDirection::kX ? dstStride : 1;
- radius = SkMin32(radius, width - 1);
- const SkPMColor* upperSrc = src + radius * srcStrideX;
- for (int x = 0; x < width; ++x) {
- const SkPMColor* lp = src;
- const SkPMColor* up = upperSrc;
- SkPMColor* dptr = dst;
- for (int y = 0; y < height; ++y) {
- // If we're maxing (dilate), start from 0; if minning (erode), start from 255.
- const int start = (type == kDilate) ? 0 : 255;
- int B = start, G = start, R = start, A = start;
- for (const SkPMColor* p = lp; p <= up; p += srcStrideX) {
- int b = SkGetPackedB32(*p),
- g = SkGetPackedG32(*p),
- r = SkGetPackedR32(*p),
- a = SkGetPackedA32(*p);
- if (type == kDilate) {
- B = SkTMax(b, B);
- G = SkTMax(g, G);
- R = SkTMax(r, R);
- A = SkTMax(a, A);
- } else {
- B = SkTMin(b, B);
- G = SkTMin(g, G);
- R = SkTMin(r, R);
- A = SkTMin(a, A);
- }
- }
- *dptr = SkPackARGB32(A, R, G, B);
- dptr += dstStrideY;
- lp += srcStrideY;
- up += srcStrideY;
- }
- if (x >= radius) { src += srcStrideX; }
- if (x + radius < width - 1) { upperSrc += srcStrideX; }
- dst += dstStrideX;
- }
- }
- #endif
- } // namespace
- 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->applyCropRectAndPad(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()) {
- auto 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::Type::kDilate
- : GrMorphologyEffect::Type::kErode;
- 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 = &morph<kDilate, MorphDirection::kX>;
- procY = &morph<kDilate, MorphDirection::kY>;
- } else {
- procX = &morph<kErode, MorphDirection::kX>;
- procY = &morph<kErode, MorphDirection::kY>;
- }
- 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());
- }
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