| /* |
| * 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 "SkColorSpaceXformer.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()); |
| auto input = xformer->apply(this->getInput(0)); |
| if (input.get() != this->getInput(0)) { |
| 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()); |
| } |
| return this->refMe(); |
| } |
