| /* |
| * 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 "SkDevice.h" |
| #include "SkOpts.h" |
| #include "SkReadBuffer.h" |
| #include "SkRect.h" |
| #include "SkWriteBuffer.h" |
| #if SK_SUPPORT_GPU |
| #include "GrContext.h" |
| #include "GrDrawContext.h" |
| #include "GrInvariantOutput.h" |
| #include "GrTexture.h" |
| #include "SkGr.h" |
| #include "effects/Gr1DKernelEffect.h" |
| #include "glsl/GrGLSLFragmentProcessor.h" |
| #include "glsl/GrGLSLFragmentShaderBuilder.h" |
| #include "glsl/GrGLSLProgramDataManager.h" |
| #include "glsl/GrGLSLUniformHandler.h" |
| #endif |
| |
| SkMorphologyImageFilter::SkMorphologyImageFilter(int radiusX, |
| int radiusY, |
| SkImageFilter* input, |
| const CropRect* cropRect) |
| : INHERITED(1, &input, 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 callProcX(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 callProcY(SkMorphologyImageFilter::Proc procY, const SkBitmap& src, SkBitmap* dst, int radiusY, const SkIRect& bounds) |
| { |
| procY(src.getAddr32(bounds.left(), bounds.top()), dst->getAddr32(0, 0), |
| radiusY, bounds.height(), bounds.width(), |
| src.rowBytesAsPixels(), dst->rowBytesAsPixels()); |
| } |
| |
| bool SkMorphologyImageFilter::filterImageGeneric(SkMorphologyImageFilter::Proc procX, |
| SkMorphologyImageFilter::Proc procY, |
| Proxy* proxy, |
| const SkBitmap& source, |
| const Context& ctx, |
| SkBitmap* dst, |
| SkIPoint* offset) const { |
| SkBitmap src = source; |
| SkIPoint srcOffset = SkIPoint::Make(0, 0); |
| if (!this->filterInput(0, proxy, source, ctx, &src, &srcOffset)) { |
| return false; |
| } |
| |
| if (src.colorType() != kN32_SkColorType) { |
| return false; |
| } |
| |
| SkIRect bounds; |
| if (!this->applyCropRect(this->mapContext(ctx), proxy, src, &srcOffset, &bounds, &src)) { |
| return false; |
| } |
| |
| SkAutoLockPixels alp(src); |
| if (!src.getPixels()) { |
| return false; |
| } |
| |
| 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 false; |
| } |
| |
| SkIRect srcBounds = bounds; |
| srcBounds.offset(-srcOffset); |
| |
| if (width == 0 && height == 0) { |
| src.extractSubset(dst, srcBounds); |
| offset->fX = bounds.left(); |
| offset->fY = bounds.top(); |
| return true; |
| } |
| |
| SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(bounds.width(), bounds.height())); |
| if (!device) { |
| return false; |
| } |
| *dst = device->accessBitmap(false); |
| SkAutoLockPixels alp_dst(*dst); |
| |
| if (width > 0 && height > 0) { |
| SkAutoTUnref<SkBaseDevice> tempDevice(proxy->createDevice(dst->width(), dst->height())); |
| if (!tempDevice) { |
| return false; |
| } |
| SkBitmap temp = tempDevice->accessBitmap(false); |
| SkAutoLockPixels alp_temp(temp); |
| callProcX(procX, src, &temp, width, srcBounds); |
| SkIRect tmpBounds = SkIRect::MakeWH(srcBounds.width(), srcBounds.height()); |
| callProcY(procY, temp, dst, height, tmpBounds); |
| } else if (width > 0) { |
| callProcX(procX, src, dst, width, srcBounds); |
| } else if (height > 0) { |
| callProcY(procY, src, dst, height, srcBounds); |
| } |
| offset->fX = bounds.left(); |
| offset->fY = bounds.top(); |
| return true; |
| } |
| |
| bool SkErodeImageFilter::onFilterImage(Proxy* proxy, |
| const SkBitmap& source, const Context& ctx, |
| SkBitmap* dst, SkIPoint* offset) const { |
| return this->filterImageGeneric(SkOpts::erode_x, SkOpts::erode_y, |
| proxy, source, ctx, dst, offset); |
| } |
| |
| bool SkDilateImageFilter::onFilterImage(Proxy* proxy, |
| const SkBitmap& source, const Context& ctx, |
| SkBitmap* dst, SkIPoint* offset) const { |
| return this->filterImageGeneric(SkOpts::dilate_x, SkOpts::dilate_y, |
| proxy, source, ctx, dst, offset); |
| } |
| |
| void SkMorphologyImageFilter::computeFastBounds(const SkRect& src, SkRect* dst) const { |
| if (this->getInput(0)) { |
| this->getInput(0)->computeFastBounds(src, dst); |
| } else { |
| *dst = src; |
| } |
| dst->outset(SkIntToScalar(fRadius.width()), SkIntToScalar(fRadius.height())); |
| } |
| |
| void SkMorphologyImageFilter::onFilterNodeBounds(const SkIRect& src, const SkMatrix& ctm, |
| SkIRect* dst, MapDirection) const { |
| *dst = src; |
| SkVector radius = SkVector::Make(SkIntToScalar(this->radius().width()), |
| SkIntToScalar(this->radius().height())); |
| ctm.mapVectors(&radius, 1); |
| dst->outset(SkScalarCeilToInt(radius.x()), SkScalarCeilToInt(radius.y())); |
| } |
| |
| SkFlattenable* SkErodeImageFilter::CreateProc(SkReadBuffer& buffer) { |
| SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1); |
| const int width = buffer.readInt(); |
| const int height = buffer.readInt(); |
| return Create(width, height, common.getInput(0), &common.cropRect()); |
| } |
| |
| SkFlattenable* SkDilateImageFilter::CreateProc(SkReadBuffer& buffer) { |
| SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1); |
| const int width = buffer.readInt(); |
| const int height = buffer.readInt(); |
| return Create(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 GrFragmentProcessor* Create(GrTexture* tex, Direction dir, int radius, |
| MorphologyType type) { |
| return new GrMorphologyEffect(tex, dir, radius, type); |
| } |
| |
| static GrFragmentProcessor* Create(GrTexture* tex, Direction dir, int radius, |
| MorphologyType type, float bounds[2]) { |
| return new GrMorphologyEffect(tex, dir, radius, type, bounds); |
| } |
| |
| virtual ~GrMorphologyEffect(); |
| |
| 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 GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
| |
| bool onIsEqual(const GrFragmentProcessor&) const override; |
| |
| void onComputeInvariantOutput(GrInvariantOutput* inout) const override; |
| |
| GrMorphologyEffect(GrTexture*, Direction, int radius, MorphologyType); |
| GrMorphologyEffect(GrTexture*, Direction, int radius, MorphologyType, |
| float bounds[2]); |
| |
| GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
| |
| typedef Gr1DKernelEffect INHERITED; |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| class GrGLMorphologyEffect : public GrGLSLFragmentProcessor { |
| public: |
| GrGLMorphologyEffect(const GrProcessor&); |
| |
| virtual void emitCode(EmitArgs&) override; |
| |
| static inline void GenKey(const GrProcessor&, const GrGLSLCaps&, GrProcessorKeyBuilder* b); |
| |
| protected: |
| void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override; |
| |
| private: |
| int width() const { return GrMorphologyEffect::WidthFromRadius(fRadius); } |
| |
| int fRadius; |
| Gr1DKernelEffect::Direction fDirection; |
| bool fUseRange; |
| GrMorphologyEffect::MorphologyType fType; |
| GrGLSLProgramDataManager::UniformHandle fPixelSizeUni; |
| GrGLSLProgramDataManager::UniformHandle fRangeUni; |
| |
| typedef GrGLSLFragmentProcessor INHERITED; |
| }; |
| |
| GrGLMorphologyEffect::GrGLMorphologyEffect(const GrProcessor& proc) { |
| const GrMorphologyEffect& m = proc.cast<GrMorphologyEffect>(); |
| fRadius = m.radius(); |
| fDirection = m.direction(); |
| fUseRange = m.useRange(); |
| fType = m.type(); |
| } |
| |
| void GrGLMorphologyEffect::emitCode(EmitArgs& args) { |
| GrGLSLUniformHandler* uniformHandler = args.fUniformHandler; |
| fPixelSizeUni = uniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility, |
| kFloat_GrSLType, kDefault_GrSLPrecision, |
| "PixelSize"); |
| const char* pixelSizeInc = uniformHandler->getUniformCStr(fPixelSizeUni); |
| fRangeUni = uniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility, |
| kVec2f_GrSLType, kDefault_GrSLPrecision, |
| "Range"); |
| const char* range = uniformHandler->getUniformCStr(fRangeUni); |
| |
| GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder; |
| SkString coords2D = fragBuilder->ensureFSCoords2D(args.fCoords, 0); |
| const char* func; |
| switch (fType) { |
| 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 (fDirection) { |
| case Gr1DKernelEffect::kX_Direction: |
| dir = "x"; |
| break; |
| case Gr1DKernelEffect::kY_Direction: |
| dir = "y"; |
| break; |
| default: |
| SkFAIL("Unknown filter direction."); |
| dir = ""; // suppress warning |
| } |
| |
| // 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, fRadius, pixelSizeInc); |
| if (fUseRange) { |
| // 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.fSamplers[0], "coord"); |
| fragBuilder->codeAppend(");\n"); |
| // coord.x += pixelSize; |
| fragBuilder->codeAppendf("\t\t\tcoord.%s += %s;\n", dir, pixelSizeInc); |
| if (fUseRange) { |
| // coord.x = min(highBound, coord.x); |
| fragBuilder->codeAppendf("\t\t\tcoord.%s = min(highBound, coord.%s);", dir, dir); |
| } |
| fragBuilder->codeAppend("\t\t}\n"); |
| SkString modulate; |
| GrGLSLMulVarBy4f(&modulate, args.fOutputColor, args.fInputColor); |
| fragBuilder->codeAppend(modulate.c_str()); |
| } |
| |
| void GrGLMorphologyEffect::GenKey(const GrProcessor& proc, |
| const GrGLSLCaps&, 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 GrProcessor& proc) { |
| const GrMorphologyEffect& m = proc.cast<GrMorphologyEffect>(); |
| GrTexture& texture = *m.texture(0); |
| // the code we generated was for a specific kernel radius, direction and bound usage |
| SkASSERT(m.radius() == fRadius); |
| SkASSERT(m.direction() == fDirection); |
| SkASSERT(m.useRange() == fUseRange); |
| |
| float pixelSize = 0.0f; |
| switch (fDirection) { |
| 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 (fUseRange) { |
| const float* range = m.range(); |
| if (fDirection && texture.origin() == kBottomLeft_GrSurfaceOrigin) { |
| pdman.set2f(fRangeUni, 1.0f - range[1], 1.0f - range[0]); |
| } else { |
| pdman.set2f(fRangeUni, range[0], range[1]); |
| } |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| GrMorphologyEffect::GrMorphologyEffect(GrTexture* texture, |
| Direction direction, |
| int radius, |
| MorphologyType type) |
| : INHERITED(texture, direction, radius) |
| , fType(type), fUseRange(false) { |
| this->initClassID<GrMorphologyEffect>(); |
| } |
| |
| GrMorphologyEffect::GrMorphologyEffect(GrTexture* texture, |
| Direction direction, |
| int radius, |
| MorphologyType type, |
| float range[2]) |
| : INHERITED(texture, direction, radius) |
| , fType(type), fUseRange(true) { |
| this->initClassID<GrMorphologyEffect>(); |
| fRange[0] = range[0]; |
| fRange[1] = range[1]; |
| } |
| |
| GrMorphologyEffect::~GrMorphologyEffect() { |
| } |
| |
| void GrMorphologyEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
| GrProcessorKeyBuilder* b) const { |
| GrGLMorphologyEffect::GenKey(*this, caps, b); |
| } |
| |
| GrGLSLFragmentProcessor* GrMorphologyEffect::onCreateGLSLInstance() const { |
| return new GrGLMorphologyEffect(*this); |
| } |
| 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()); |
| } |
| |
| void GrMorphologyEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const { |
| // This is valid because the color components of the result of the kernel all come |
| // exactly from existing values in the source texture. |
| this->updateInvariantOutputForModulation(inout); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrMorphologyEffect); |
| |
| const GrFragmentProcessor* GrMorphologyEffect::TestCreate(GrProcessorTestData* d) { |
| int texIdx = d->fRandom->nextBool() ? GrProcessorUnitTest::kSkiaPMTextureIdx : |
| GrProcessorUnitTest::kAlphaTextureIdx; |
| 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::Create(d->fTextures[texIdx], dir, radius, type); |
| } |
| |
| namespace { |
| |
| |
| void apply_morphology_rect(GrDrawContext* drawContext, |
| const GrClip& clip, |
| GrTexture* texture, |
| const SkIRect& srcRect, |
| const SkIRect& dstRect, |
| int radius, |
| GrMorphologyEffect::MorphologyType morphType, |
| float bounds[2], |
| Gr1DKernelEffect::Direction direction) { |
| GrPaint paint; |
| paint.addColorFragmentProcessor(GrMorphologyEffect::Create(texture, |
| direction, |
| radius, |
| morphType, |
| bounds))->unref(); |
| paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode); |
| drawContext->fillRectToRect(clip, paint, SkMatrix::I(), SkRect::Make(dstRect), |
| SkRect::Make(srcRect)); |
| } |
| |
| void apply_morphology_rect_no_bounds(GrDrawContext* drawContext, |
| const GrClip& clip, |
| GrTexture* texture, |
| const SkIRect& srcRect, |
| const SkIRect& dstRect, |
| int radius, |
| GrMorphologyEffect::MorphologyType morphType, |
| Gr1DKernelEffect::Direction direction) { |
| GrPaint paint; |
| paint.addColorFragmentProcessor(GrMorphologyEffect::Create(texture, |
| direction, |
| radius, |
| morphType))->unref(); |
| paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode); |
| drawContext->fillRectToRect(clip, paint, SkMatrix::I(), SkRect::Make(dstRect), |
| SkRect::Make(srcRect)); |
| } |
| |
| void apply_morphology_pass(GrDrawContext* drawContext, |
| const GrClip& clip, |
| GrTexture* texture, |
| 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) / texture->width(); |
| bounds[1] = (SkIntToScalar(srcRect.right()) - 0.5f) / texture->width(); |
| 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) / texture->height(); |
| bounds[1] = (SkIntToScalar(srcRect.bottom()) - 0.5f) / texture->height(); |
| 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(drawContext, clip, texture, srcRect, dstRect, radius, |
| morphType, bounds, direction); |
| } else { |
| // Draw upper and lower margins with bounds; middle without. |
| apply_morphology_rect(drawContext, clip, texture, lowerSrcRect, lowerDstRect, radius, |
| morphType, bounds, direction); |
| apply_morphology_rect(drawContext, clip, texture, upperSrcRect, upperDstRect, radius, |
| morphType, bounds, direction); |
| apply_morphology_rect_no_bounds(drawContext, clip, texture, middleSrcRect, middleDstRect, |
| radius, morphType, direction); |
| } |
| } |
| |
| bool apply_morphology(const SkBitmap& input, |
| const SkIRect& rect, |
| GrMorphologyEffect::MorphologyType morphType, |
| SkISize radius, |
| SkBitmap* dst) { |
| SkAutoTUnref<GrTexture> srcTexture(SkRef(input.getTexture())); |
| SkASSERT(srcTexture); |
| GrContext* context = srcTexture->getContext(); |
| |
| // setup new clip |
| GrClip clip(SkRect::MakeWH(SkIntToScalar(srcTexture->width()), |
| SkIntToScalar(srcTexture->height()))); |
| |
| SkIRect dstRect = SkIRect::MakeWH(rect.width(), rect.height()); |
| GrSurfaceDesc desc; |
| desc.fFlags = kRenderTarget_GrSurfaceFlag; |
| desc.fWidth = rect.width(); |
| desc.fHeight = rect.height(); |
| desc.fConfig = kSkia8888_GrPixelConfig; |
| SkIRect srcRect = rect; |
| |
| if (radius.fWidth > 0) { |
| GrTexture* scratch = context->textureProvider()->createApproxTexture(desc); |
| if (nullptr == scratch) { |
| return false; |
| } |
| SkAutoTUnref<GrDrawContext> dstDrawContext( |
| context->drawContext(scratch->asRenderTarget())); |
| if (!dstDrawContext) { |
| return false; |
| } |
| |
| apply_morphology_pass(dstDrawContext, clip, 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; |
| dstDrawContext->clear(&clearRect, clearColor, false); |
| |
| srcTexture.reset(scratch); |
| srcRect = dstRect; |
| } |
| if (radius.fHeight > 0) { |
| GrTexture* scratch = context->textureProvider()->createApproxTexture(desc); |
| if (nullptr == scratch) { |
| return false; |
| } |
| SkAutoTUnref<GrDrawContext> dstDrawContext( |
| context->drawContext(scratch->asRenderTarget())); |
| if (!dstDrawContext) { |
| return false; |
| } |
| |
| apply_morphology_pass(dstDrawContext, clip, srcTexture, |
| srcRect, dstRect, radius.fHeight, morphType, |
| Gr1DKernelEffect::kY_Direction); |
| |
| srcTexture.reset(scratch); |
| } |
| GrWrapTextureInBitmap(srcTexture, rect.width(), rect.height(), false, dst); |
| return true; |
| } |
| |
| }; |
| |
| bool SkMorphologyImageFilter::filterImageGPUGeneric(bool dilate, |
| Proxy* proxy, |
| const SkBitmap& src, |
| const Context& ctx, |
| SkBitmap* result, |
| SkIPoint* offset) const { |
| SkBitmap input = src; |
| SkIPoint srcOffset = SkIPoint::Make(0, 0); |
| if (!this->filterInputGPU(0, proxy, src, ctx, &input, &srcOffset)) { |
| return false; |
| } |
| SkIRect bounds; |
| if (!this->applyCropRect(this->mapContext(ctx), proxy, input, &srcOffset, &bounds, &input)) { |
| return false; |
| } |
| 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 false; |
| } |
| |
| SkIRect srcBounds = bounds; |
| srcBounds.offset(-srcOffset); |
| if (width == 0 && height == 0) { |
| input.extractSubset(result, srcBounds); |
| offset->fX = bounds.left(); |
| offset->fY = bounds.top(); |
| return true; |
| } |
| |
| GrMorphologyEffect::MorphologyType type = dilate ? GrMorphologyEffect::kDilate_MorphologyType |
| : GrMorphologyEffect::kErode_MorphologyType; |
| if (!apply_morphology(input, srcBounds, type, SkISize::Make(width, height), result)) { |
| return false; |
| } |
| offset->fX = bounds.left(); |
| offset->fY = bounds.top(); |
| return true; |
| } |
| |
| bool SkDilateImageFilter::filterImageGPU(Proxy* proxy, const SkBitmap& src, const Context& ctx, |
| SkBitmap* result, SkIPoint* offset) const { |
| return this->filterImageGPUGeneric(true, proxy, src, ctx, result, offset); |
| } |
| |
| bool SkErodeImageFilter::filterImageGPU(Proxy* proxy, const SkBitmap& src, const Context& ctx, |
| SkBitmap* result, SkIPoint* offset) const { |
| return this->filterImageGPUGeneric(false, proxy, src, ctx, result, offset); |
| } |
| |
| #endif |
