* found in the LICENSE file.
*/
-#include "SkBitmap.h"
#include "SkMagnifierImageFilter.h"
+
+#include "SkBitmap.h"
#include "SkColorPriv.h"
#include "SkReadBuffer.h"
+#include "SkSpecialImage.h"
#include "SkWriteBuffer.h"
#include "SkValidationUtils.h"
////////////////////////////////////////////////////////////////////////////////
#if SK_SUPPORT_GPU
+#include "GrContext.h"
+#include "GrDrawContext.h"
+#include "GrInvariantOutput.h"
#include "effects/GrSingleTextureEffect.h"
-#include "gl/GrGLEffect.h"
-#include "gl/GrGLSL.h"
-#include "gl/GrGLTexture.h"
-#include "GrTBackendEffectFactory.h"
-
-class GrGLMagnifierEffect;
+#include "glsl/GrGLSLFragmentProcessor.h"
+#include "glsl/GrGLSLFragmentShaderBuilder.h"
+#include "glsl/GrGLSLProgramDataManager.h"
+#include "glsl/GrGLSLUniformHandler.h"
class GrMagnifierEffect : public GrSingleTextureEffect {
public:
- static GrEffectRef* Create(GrTexture* texture,
- float xOffset,
- float yOffset,
- float xInvZoom,
- float yInvZoom,
- float xInvInset,
- float yInvInset) {
- AutoEffectUnref effect(SkNEW_ARGS(GrMagnifierEffect, (texture,
- xOffset,
- yOffset,
- xInvZoom,
- yInvZoom,
- xInvInset,
- yInvInset)));
- return CreateEffectRef(effect);
+ static sk_sp<GrFragmentProcessor> Make(GrTexture* texture,
+ const SkRect& bounds,
+ float xOffset,
+ float yOffset,
+ float xInvZoom,
+ float yInvZoom,
+ float xInvInset,
+ float yInvInset) {
+ return sk_sp<GrFragmentProcessor>(new GrMagnifierEffect(texture, bounds,
+ xOffset, yOffset,
+ xInvZoom, yInvZoom,
+ xInvInset, yInvInset));
}
- virtual ~GrMagnifierEffect() {};
+ ~GrMagnifierEffect() override {};
- static const char* Name() { return "Magnifier"; }
+ const char* name() const override { return "Magnifier"; }
- virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE;
- virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
+ const SkRect& bounds() const { return fBounds; } // Bounds of source image.
+ // Offset to apply to zoomed pixels, (srcRect position / texture size).
+ float xOffset() const { return fXOffset; }
+ float yOffset() const { return fYOffset; }
- float x_offset() const { return fXOffset; }
- float y_offset() const { return fYOffset; }
- float x_inv_zoom() const { return fXInvZoom; }
- float y_inv_zoom() const { return fYInvZoom; }
- float x_inv_inset() const { return fXInvInset; }
- float y_inv_inset() const { return fYInvInset; }
+ // Scale to apply to zoomed pixels (srcRect size / bounds size).
+ float xInvZoom() const { return fXInvZoom; }
+ float yInvZoom() const { return fYInvZoom; }
- typedef GrGLMagnifierEffect GLEffect;
+ // 1/radius over which to transition from unzoomed to zoomed pixels (bounds size / inset).
+ float xInvInset() const { return fXInvInset; }
+ float yInvInset() const { return fYInvInset; }
private:
GrMagnifierEffect(GrTexture* texture,
+ const SkRect& bounds,
float xOffset,
float yOffset,
float xInvZoom,
float yInvZoom,
float xInvInset,
float yInvInset)
- : GrSingleTextureEffect(texture, MakeDivByTextureWHMatrix(texture))
+ : INHERITED(texture, nullptr, GrCoordTransform::MakeDivByTextureWHMatrix(texture))
+ , fBounds(bounds)
, fXOffset(xOffset)
, fYOffset(yOffset)
, fXInvZoom(xInvZoom)
, fYInvZoom(yInvZoom)
, fXInvInset(xInvInset)
- , fYInvInset(yInvInset) {}
+ , fYInvInset(yInvInset) {
+ this->initClassID<GrMagnifierEffect>();
+ }
+
+ GrGLSLFragmentProcessor* onCreateGLSLInstance() const override;
- virtual bool onIsEqual(const GrEffect&) const SK_OVERRIDE;
+ void onGetGLSLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override;
- GR_DECLARE_EFFECT_TEST;
+ bool onIsEqual(const GrFragmentProcessor&) const override;
+ void onComputeInvariantOutput(GrInvariantOutput* inout) const override;
+
+ GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
+
+ SkRect fBounds;
float fXOffset;
float fYOffset;
float fXInvZoom;
};
// For brevity
-typedef GrGLUniformManager::UniformHandle UniformHandle;
+typedef GrGLSLProgramDataManager::UniformHandle UniformHandle;
-class GrGLMagnifierEffect : public GrGLEffect {
+class GrGLMagnifierEffect : public GrGLSLFragmentProcessor {
public:
- GrGLMagnifierEffect(const GrBackendEffectFactory&, const GrDrawEffect&);
-
- virtual void emitCode(GrGLShaderBuilder*,
- const GrDrawEffect&,
- EffectKey,
- const char* outputColor,
- const char* inputColor,
- const TransformedCoordsArray&,
- const TextureSamplerArray&) SK_OVERRIDE;
+ void emitCode(EmitArgs&) override;
- virtual void setData(const GrGLUniformManager&, const GrDrawEffect&) SK_OVERRIDE;
+protected:
+ void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override;
private:
UniformHandle fOffsetVar;
UniformHandle fInvZoomVar;
UniformHandle fInvInsetVar;
+ UniformHandle fBoundsVar;
- typedef GrGLEffect INHERITED;
+ typedef GrGLSLFragmentProcessor INHERITED;
};
-GrGLMagnifierEffect::GrGLMagnifierEffect(const GrBackendEffectFactory& factory, const GrDrawEffect&)
- : INHERITED(factory) {
-}
-
-void GrGLMagnifierEffect::emitCode(GrGLShaderBuilder* builder,
- const GrDrawEffect&,
- EffectKey key,
- const char* outputColor,
- const char* inputColor,
- const TransformedCoordsArray& coords,
- const TextureSamplerArray& samplers) {
- SkString coords2D = builder->ensureFSCoords2D(coords, 0);
- fOffsetVar = builder->addUniform(
- GrGLShaderBuilder::kFragment_Visibility |
- GrGLShaderBuilder::kVertex_Visibility,
- kVec2f_GrSLType, "Offset");
- fInvZoomVar = builder->addUniform(
- GrGLShaderBuilder::kFragment_Visibility |
- GrGLShaderBuilder::kVertex_Visibility,
- kVec2f_GrSLType, "InvZoom");
- fInvInsetVar = builder->addUniform(
- GrGLShaderBuilder::kFragment_Visibility |
- GrGLShaderBuilder::kVertex_Visibility,
- kVec2f_GrSLType, "InvInset");
-
- builder->fsCodeAppendf("\t\tvec2 coord = %s;\n", coords2D.c_str());
- builder->fsCodeAppendf("\t\tvec2 zoom_coord = %s + %s * %s;\n",
- builder->getUniformCStr(fOffsetVar),
- coords2D.c_str(),
- builder->getUniformCStr(fInvZoomVar));
-
- builder->fsCodeAppend("\t\tvec2 delta = min(coord, vec2(1.0, 1.0) - coord);\n");
-
- builder->fsCodeAppendf("\t\tdelta = delta * %s;\n", builder->getUniformCStr(fInvInsetVar));
-
- builder->fsCodeAppend("\t\tfloat weight = 0.0;\n");
- builder->fsCodeAppend("\t\tif (delta.s < 2.0 && delta.t < 2.0) {\n");
- builder->fsCodeAppend("\t\t\tdelta = vec2(2.0, 2.0) - delta;\n");
- builder->fsCodeAppend("\t\t\tfloat dist = length(delta);\n");
- builder->fsCodeAppend("\t\t\tdist = max(2.0 - dist, 0.0);\n");
- builder->fsCodeAppend("\t\t\tweight = min(dist * dist, 1.0);\n");
- builder->fsCodeAppend("\t\t} else {\n");
- builder->fsCodeAppend("\t\t\tvec2 delta_squared = delta * delta;\n");
- builder->fsCodeAppend("\t\t\tweight = min(min(delta_squared.x, delta_squared.y), 1.0);\n");
- builder->fsCodeAppend("\t\t}\n");
-
- builder->fsCodeAppend("\t\tvec2 mix_coord = mix(coord, zoom_coord, weight);\n");
- builder->fsCodeAppend("\t\tvec4 output_color = ");
- builder->fsAppendTextureLookup(samplers[0], "mix_coord");
- builder->fsCodeAppend(";\n");
-
- builder->fsCodeAppendf("\t\t%s = output_color;", outputColor);
+void GrGLMagnifierEffect::emitCode(EmitArgs& args) {
+ GrGLSLUniformHandler* uniformHandler = args.fUniformHandler;
+ fOffsetVar = uniformHandler->addUniform(kFragment_GrShaderFlag,
+ kVec2f_GrSLType, kDefault_GrSLPrecision,
+ "Offset");
+ fInvZoomVar = uniformHandler->addUniform(kFragment_GrShaderFlag,
+ kVec2f_GrSLType, kDefault_GrSLPrecision,
+ "InvZoom");
+ fInvInsetVar = uniformHandler->addUniform(kFragment_GrShaderFlag,
+ kVec2f_GrSLType, kDefault_GrSLPrecision,
+ "InvInset");
+ fBoundsVar = uniformHandler->addUniform(kFragment_GrShaderFlag,
+ kVec4f_GrSLType, kDefault_GrSLPrecision,
+ "Bounds");
+
+ GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder;
+ SkString coords2D = fragBuilder->ensureFSCoords2D(args.fCoords, 0);
+ fragBuilder->codeAppendf("\t\tvec2 coord = %s;\n", coords2D.c_str());
+ fragBuilder->codeAppendf("\t\tvec2 zoom_coord = %s + %s * %s;\n",
+ uniformHandler->getUniformCStr(fOffsetVar),
+ coords2D.c_str(),
+ uniformHandler->getUniformCStr(fInvZoomVar));
+ const char* bounds = uniformHandler->getUniformCStr(fBoundsVar);
+ fragBuilder->codeAppendf("\t\tvec2 delta = (coord - %s.xy) * %s.zw;\n", bounds, bounds);
+ fragBuilder->codeAppendf("\t\tdelta = min(delta, vec2(1.0, 1.0) - delta);\n");
+ fragBuilder->codeAppendf("\t\tdelta = delta * %s;\n",
+ uniformHandler->getUniformCStr(fInvInsetVar));
+
+ fragBuilder->codeAppend("\t\tfloat weight = 0.0;\n");
+ fragBuilder->codeAppend("\t\tif (delta.s < 2.0 && delta.t < 2.0) {\n");
+ fragBuilder->codeAppend("\t\t\tdelta = vec2(2.0, 2.0) - delta;\n");
+ fragBuilder->codeAppend("\t\t\tfloat dist = length(delta);\n");
+ fragBuilder->codeAppend("\t\t\tdist = max(2.0 - dist, 0.0);\n");
+ fragBuilder->codeAppend("\t\t\tweight = min(dist * dist, 1.0);\n");
+ fragBuilder->codeAppend("\t\t} else {\n");
+ fragBuilder->codeAppend("\t\t\tvec2 delta_squared = delta * delta;\n");
+ fragBuilder->codeAppend("\t\t\tweight = min(min(delta_squared.x, delta_squared.y), 1.0);\n");
+ fragBuilder->codeAppend("\t\t}\n");
+
+ fragBuilder->codeAppend("\t\tvec2 mix_coord = mix(coord, zoom_coord, weight);\n");
+ fragBuilder->codeAppend("\t\tvec4 output_color = ");
+ fragBuilder->appendTextureLookup(args.fTexSamplers[0], "mix_coord");
+ fragBuilder->codeAppend(";\n");
+
+ fragBuilder->codeAppendf("\t\t%s = output_color;", args.fOutputColor);
SkString modulate;
- GrGLSLMulVarBy4f(&modulate, 2, outputColor, inputColor);
- builder->fsCodeAppend(modulate.c_str());
+ GrGLSLMulVarBy4f(&modulate, args.fOutputColor, args.fInputColor);
+ fragBuilder->codeAppend(modulate.c_str());
}
-void GrGLMagnifierEffect::setData(const GrGLUniformManager& uman,
- const GrDrawEffect& drawEffect) {
- const GrMagnifierEffect& zoom = drawEffect.castEffect<GrMagnifierEffect>();
- uman.set2f(fOffsetVar, zoom.x_offset(), zoom.y_offset());
- uman.set2f(fInvZoomVar, zoom.x_inv_zoom(), zoom.y_inv_zoom());
- uman.set2f(fInvInsetVar, zoom.x_inv_inset(), zoom.y_inv_inset());
+void GrGLMagnifierEffect::onSetData(const GrGLSLProgramDataManager& pdman,
+ const GrProcessor& effect) {
+ const GrMagnifierEffect& zoom = effect.cast<GrMagnifierEffect>();
+ pdman.set2f(fOffsetVar, zoom.xOffset(), zoom.yOffset());
+ pdman.set2f(fInvZoomVar, zoom.xInvZoom(), zoom.yInvZoom());
+ pdman.set2f(fInvInsetVar, zoom.xInvInset(), zoom.yInvInset());
+ pdman.set4f(fBoundsVar, zoom.bounds().x(), zoom.bounds().y(),
+ zoom.bounds().width(), zoom.bounds().height());
}
/////////////////////////////////////////////////////////////////////
-GR_DEFINE_EFFECT_TEST(GrMagnifierEffect);
+void GrMagnifierEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps,
+ GrProcessorKeyBuilder* b) const {
+ GrGLMagnifierEffect::GenKey(*this, caps, b);
+}
-GrEffectRef* GrMagnifierEffect::TestCreate(SkRandom* random,
- GrContext* context,
- const GrDrawTargetCaps&,
- GrTexture** textures) {
- GrTexture* texture = textures[0];
+GrGLSLFragmentProcessor* GrMagnifierEffect::onCreateGLSLInstance() const {
+ return new GrGLMagnifierEffect;
+}
+
+GR_DEFINE_FRAGMENT_PROCESSOR_TEST(GrMagnifierEffect);
+
+sk_sp<GrFragmentProcessor> GrMagnifierEffect::TestCreate(GrProcessorTestData* d) {
+ GrTexture* texture = d->fTextures[0];
const int kMaxWidth = 200;
const int kMaxHeight = 200;
const int kMaxInset = 20;
- uint32_t width = random->nextULessThan(kMaxWidth);
- uint32_t height = random->nextULessThan(kMaxHeight);
- uint32_t x = random->nextULessThan(kMaxWidth - width);
- uint32_t y = random->nextULessThan(kMaxHeight - height);
- uint32_t inset = random->nextULessThan(kMaxInset);
+ uint32_t width = d->fRandom->nextULessThan(kMaxWidth);
+ uint32_t height = d->fRandom->nextULessThan(kMaxHeight);
+ uint32_t x = d->fRandom->nextULessThan(kMaxWidth - width);
+ uint32_t y = d->fRandom->nextULessThan(kMaxHeight - height);
+ uint32_t inset = d->fRandom->nextULessThan(kMaxInset);
- GrEffectRef* effect = GrMagnifierEffect::Create(
+ sk_sp<GrFragmentProcessor> effect(GrMagnifierEffect::Make(
texture,
+ SkRect::MakeWH(SkIntToScalar(kMaxWidth), SkIntToScalar(kMaxHeight)),
(float) width / texture->width(),
(float) height / texture->height(),
texture->width() / (float) x,
texture->height() / (float) y,
(float) inset / texture->width(),
- (float) inset / texture->height());
- SkASSERT(NULL != effect);
+ (float) inset / texture->height()));
+ SkASSERT(effect);
return effect;
}
///////////////////////////////////////////////////////////////////////////////
-const GrBackendEffectFactory& GrMagnifierEffect::getFactory() const {
- return GrTBackendEffectFactory<GrMagnifierEffect>::getInstance();
-}
-
-bool GrMagnifierEffect::onIsEqual(const GrEffect& sBase) const {
- const GrMagnifierEffect& s = CastEffect<GrMagnifierEffect>(sBase);
- return (this->texture(0) == s.texture(0) &&
+bool GrMagnifierEffect::onIsEqual(const GrFragmentProcessor& sBase) const {
+ const GrMagnifierEffect& s = sBase.cast<GrMagnifierEffect>();
+ return (this->fBounds == s.fBounds &&
this->fXOffset == s.fXOffset &&
this->fYOffset == s.fYOffset &&
this->fXInvZoom == s.fXInvZoom &&
this->fYInvInset == s.fYInvInset);
}
-void GrMagnifierEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const {
- this->updateConstantColorComponentsForModulation(color, validFlags);
+void GrMagnifierEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const {
+ this->updateInvariantOutputForModulation(inout);
}
#endif
////////////////////////////////////////////////////////////////////////////////
-SkMagnifierImageFilter::SkMagnifierImageFilter(SkReadBuffer& buffer)
- : INHERITED(1, buffer) {
- float x = buffer.readScalar();
- float y = buffer.readScalar();
- float width = buffer.readScalar();
- float height = buffer.readScalar();
- fSrcRect = SkRect::MakeXYWH(x, y, width, height);
- fInset = buffer.readScalar();
-
- buffer.validate(SkScalarIsFinite(fInset) && SkIsValidRect(fSrcRect) &&
- // Negative numbers in src rect are not supported
- (fSrcRect.fLeft >= 0) && (fSrcRect.fTop >= 0));
+
+sk_sp<SkImageFilter> SkMagnifierImageFilter::Make(const SkRect& srcRect, SkScalar inset,
+ sk_sp<SkImageFilter> input,
+ const CropRect* cropRect) {
+
+ if (!SkScalarIsFinite(inset) || !SkIsValidRect(srcRect)) {
+ return nullptr;
+ }
+ // Negative numbers in src rect are not supported
+ if (srcRect.fLeft < 0 || srcRect.fTop < 0) {
+ return nullptr;
+ }
+ return sk_sp<SkImageFilter>(new SkMagnifierImageFilter(srcRect, inset,
+ std::move(input),
+ cropRect));
}
-// FIXME: implement single-input semantics
-SkMagnifierImageFilter::SkMagnifierImageFilter(SkRect srcRect, SkScalar inset)
- : INHERITED(0), fSrcRect(srcRect), fInset(inset) {
+
+SkMagnifierImageFilter::SkMagnifierImageFilter(const SkRect& srcRect,
+ SkScalar inset,
+ sk_sp<SkImageFilter> input,
+ const CropRect* cropRect)
+ : INHERITED(&input, 1, cropRect)
+ , fSrcRect(srcRect)
+ , fInset(inset) {
SkASSERT(srcRect.x() >= 0 && srcRect.y() >= 0 && inset >= 0);
}
-#if SK_SUPPORT_GPU
-bool SkMagnifierImageFilter::asNewEffect(GrEffectRef** effect, GrTexture* texture, const SkMatrix&, const SkIRect&) const {
- if (effect) {
- SkScalar yOffset = (texture->origin() == kTopLeft_GrSurfaceOrigin) ? fSrcRect.y() :
- (texture->height() - (fSrcRect.y() + fSrcRect.height()));
- SkScalar invInset = fInset > 0 ? SkScalarInvert(fInset) : SK_Scalar1;
- *effect = GrMagnifierEffect::Create(texture,
- fSrcRect.x() / texture->width(),
- yOffset / texture->height(),
- fSrcRect.width() / texture->width(),
- fSrcRect.height() / texture->height(),
- texture->width() * invInset,
- texture->height() * invInset);
- }
- return true;
+sk_sp<SkFlattenable> SkMagnifierImageFilter::CreateProc(SkReadBuffer& buffer) {
+ SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1);
+ SkRect src;
+ buffer.readRect(&src);
+ return Make(src, buffer.readScalar(), common.getInput(0), &common.cropRect());
}
-#endif
void SkMagnifierImageFilter::flatten(SkWriteBuffer& buffer) const {
this->INHERITED::flatten(buffer);
- buffer.writeScalar(fSrcRect.x());
- buffer.writeScalar(fSrcRect.y());
- buffer.writeScalar(fSrcRect.width());
- buffer.writeScalar(fSrcRect.height());
+ buffer.writeRect(fSrcRect);
buffer.writeScalar(fInset);
}
-bool SkMagnifierImageFilter::onFilterImage(Proxy*, const SkBitmap& src,
- const SkMatrix&, SkBitmap* dst,
- SkIPoint* offset) {
- SkASSERT(src.config() == SkBitmap::kARGB_8888_Config);
- SkASSERT(fSrcRect.width() < src.width());
- SkASSERT(fSrcRect.height() < src.height());
-
- if ((src.config() != SkBitmap::kARGB_8888_Config) ||
- (fSrcRect.width() >= src.width()) ||
- (fSrcRect.height() >= src.height())) {
- return false;
+sk_sp<SkSpecialImage> SkMagnifierImageFilter::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;
}
- SkAutoLockPixels alp(src);
- SkASSERT(src.getPixels());
- if (!src.getPixels() || src.width() <= 0 || src.height() <= 0) {
- return false;
+ const SkIRect inputBounds = SkIRect::MakeXYWH(inputOffset.x(), inputOffset.y(),
+ input->width(), input->height());
+
+ SkIRect bounds;
+ if (!this->applyCropRect(ctx, inputBounds, &bounds)) {
+ return nullptr;
}
- dst->setConfig(src.config(), src.width(), src.height());
- dst->allocPixels();
- if (!dst->getPixels()) {
- return false;
+ SkScalar invInset = fInset > 0 ? SkScalarInvert(fInset) : SK_Scalar1;
+
+ SkScalar invXZoom = fSrcRect.width() / bounds.width();
+ SkScalar invYZoom = fSrcRect.height() / bounds.height();
+
+
+#if SK_SUPPORT_GPU
+ if (source->isTextureBacked()) {
+ GrContext* context = source->getContext();
+
+ sk_sp<GrTexture> inputTexture(input->asTextureRef(context));
+ SkASSERT(inputTexture);
+
+ offset->fX = bounds.left();
+ offset->fY = bounds.top();
+ bounds.offset(-inputOffset);
+
+ SkScalar yOffset = inputTexture->origin() == kTopLeft_GrSurfaceOrigin
+ ? fSrcRect.y()
+ : inputTexture->height() -
+ fSrcRect.height() * inputTexture->height() / bounds.height() - fSrcRect.y();
+ int boundsY = inputTexture->origin() == kTopLeft_GrSurfaceOrigin
+ ? bounds.y()
+ : inputTexture->height() - bounds.height();
+ SkRect effectBounds = SkRect::MakeXYWH(
+ SkIntToScalar(bounds.x()) / inputTexture->width(),
+ SkIntToScalar(boundsY) / inputTexture->height(),
+ SkIntToScalar(inputTexture->width()) / bounds.width(),
+ SkIntToScalar(inputTexture->height()) / bounds.height());
+ // SRGBTODO: Handle sRGB here
+ sk_sp<GrFragmentProcessor> fp(GrMagnifierEffect::Make(
+ inputTexture.get(),
+ effectBounds,
+ fSrcRect.x() / inputTexture->width(),
+ yOffset / inputTexture->height(),
+ invXZoom,
+ invYZoom,
+ bounds.width() * invInset,
+ bounds.height() * invInset));
+ if (!fp) {
+ return nullptr;
+ }
+
+ return DrawWithFP(context, std::move(fp), bounds);
}
+#endif
- SkScalar inv_inset = fInset > 0 ? SkScalarInvert(fInset) : SK_Scalar1;
+ SkBitmap inputBM;
- SkScalar inv_x_zoom = fSrcRect.width() / src.width();
- SkScalar inv_y_zoom = fSrcRect.height() / src.height();
+ if (!input->getROPixels(&inputBM)) {
+ return nullptr;
+ }
- SkColor* sptr = src.getAddr32(0, 0);
- SkColor* dptr = dst->getAddr32(0, 0);
- int width = src.width(), height = src.height();
- for (int y = 0; y < height; ++y) {
- for (int x = 0; x < width; ++x) {
- SkScalar x_dist = SkMin32(x, width - x - 1) * inv_inset;
- SkScalar y_dist = SkMin32(y, height - y - 1) * inv_inset;
+ if ((inputBM.colorType() != kN32_SkColorType) ||
+ (fSrcRect.width() >= inputBM.width()) || (fSrcRect.height() >= inputBM.height())) {
+ return nullptr;
+ }
+
+ SkAutoLockPixels alp(inputBM);
+ SkASSERT(inputBM.getPixels());
+ if (!inputBM.getPixels() || inputBM.width() <= 0 || inputBM.height() <= 0) {
+ return nullptr;
+ }
+
+ const SkImageInfo info = SkImageInfo::MakeN32Premul(bounds.width(), bounds.height());
+
+ SkBitmap dst;
+ if (!dst.tryAllocPixels(info)) {
+ return nullptr;
+ }
+
+ SkAutoLockPixels dstLock(dst);
+
+ SkColor* dptr = dst.getAddr32(0, 0);
+ int dstWidth = dst.width(), dstHeight = dst.height();
+ for (int y = 0; y < dstHeight; ++y) {
+ for (int x = 0; x < dstWidth; ++x) {
+ SkScalar x_dist = SkMin32(x, dstWidth - x - 1) * invInset;
+ SkScalar y_dist = SkMin32(y, dstHeight - y - 1) * invInset;
SkScalar weight = 0;
static const SkScalar kScalar2 = SkScalar(2);
weight = SkMinScalar(sqDist, SK_Scalar1);
}
- SkScalar x_interp = SkScalarMul(weight, (fSrcRect.x() + x * inv_x_zoom)) +
+ SkScalar x_interp = SkScalarMul(weight, (fSrcRect.x() + x * invXZoom)) +
(SK_Scalar1 - weight) * x;
- SkScalar y_interp = SkScalarMul(weight, (fSrcRect.y() + y * inv_y_zoom)) +
+ SkScalar y_interp = SkScalarMul(weight, (fSrcRect.y() + y * invYZoom)) +
(SK_Scalar1 - weight) * y;
- int x_val = SkPin32(SkScalarFloorToInt(x_interp), 0, width - 1);
- int y_val = SkPin32(SkScalarFloorToInt(y_interp), 0, height - 1);
+ int x_val = SkTPin(bounds.x() + SkScalarFloorToInt(x_interp), 0, inputBM.width() - 1);
+ int y_val = SkTPin(bounds.y() + SkScalarFloorToInt(y_interp), 0, inputBM.height() - 1);
- *dptr = sptr[y_val * width + x_val];
+ *dptr = *inputBM.getAddr32(x_val, y_val);
dptr++;
}
}
- return true;
+
+ offset->fX = bounds.left();
+ offset->fY = bounds.top();
+ return SkSpecialImage::MakeFromRaster(SkIRect::MakeWH(bounds.width(), bounds.height()),
+ dst);
}
+
+#ifndef SK_IGNORE_TO_STRING
+void SkMagnifierImageFilter::toString(SkString* str) const {
+ str->appendf("SkMagnifierImageFilter: (");
+ str->appendf("src: (%f,%f,%f,%f) ",
+ fSrcRect.fLeft, fSrcRect.fTop, fSrcRect.fRight, fSrcRect.fBottom);
+ str->appendf("inset: %f", fInset);
+ str->append(")");
+}
+#endif
projects / platform / upstream / libSkiaSharp.git / blobdiff