Fix Morphology effects sourcing outside of the crop rect.
BUG=skia:1766 Committed: https://skia.googlesource.com/skia/+/f6be925b5615f07039ce95c3433039694a8d1679 Review URL: https://codereview.chromium.org/781153002
This commit is contained in:
cwallez
Commit bot
parent
66e09a87d4
commit
80a61df691
@ -12,7 +12,9 @@
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#include "SkShader.h"
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#include "SkBlurImageFilter.h"
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#include "SkMorphologyImageFilter.h"
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#include "SkColorFilterImageFilter.h"
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#include "SkBitmapSource.h"
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#include "SkMergeImageFilter.h"
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#include "SkOffsetImageFilter.h"
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#include "SkTestImageFilters.h"
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@ -98,7 +100,28 @@ protected:
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return SkString("imagefilterscropped");
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}
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virtual SkISize onISize() { return SkISize::Make(400, 640); }
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virtual SkISize onISize() { return SkISize::Make(400, 880); }
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void make_checkerboard() {
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fCheckerboard.allocN32Pixels(80, 80);
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SkCanvas canvas(fCheckerboard);
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canvas.clear(SK_ColorTRANSPARENT);
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SkPaint darkPaint;
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darkPaint.setColor(0xFF404040);
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SkPaint lightPaint;
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lightPaint.setColor(0xFFA0A0A0);
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for (int y = 0; y < 80; y += 16) {
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for (int x = 0; x < 80; x += 16) {
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canvas.save();
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canvas.translate(SkIntToScalar(x), SkIntToScalar(y));
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canvas.drawRect(SkRect::MakeXYWH(0, 0, 8, 8), darkPaint);
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canvas.drawRect(SkRect::MakeXYWH(8, 0, 8, 8), lightPaint);
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canvas.drawRect(SkRect::MakeXYWH(0, 8, 8, 8), lightPaint);
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canvas.drawRect(SkRect::MakeXYWH(8, 8, 8, 8), darkPaint);
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canvas.restore();
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}
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}
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}
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void draw_frame(SkCanvas* canvas, const SkRect& r) {
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SkPaint paint;
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@ -107,6 +130,10 @@ protected:
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canvas->drawRect(r, paint);
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}
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virtual void onOnceBeforeDraw() SK_OVERRIDE{
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make_checkerboard();
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}
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virtual void onDraw(SkCanvas* canvas) {
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void (*drawProc[])(SkCanvas*, const SkRect&, SkImageFilter*) = {
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draw_sprite, draw_bitmap, draw_path, draw_paint, draw_text
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@ -122,6 +149,9 @@ protected:
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SkAutoTUnref<SkImageFilter> cfOffset(SkColorFilterImageFilter::Create(cf.get(), offset.get()));
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SkAutoTUnref<SkImageFilter> erodeX(SkErodeImageFilter::Create(8, 0, NULL, &cropRect));
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SkAutoTUnref<SkImageFilter> erodeY(SkErodeImageFilter::Create(0, 8, NULL, &cropRect));
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SkImageFilter* filters[] = {
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NULL,
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SkColorFilterImageFilter::Create(cf.get(), NULL, &cropRect),
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@ -129,6 +159,10 @@ protected:
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SkBlurImageFilter::Create(8.0f, 0.0f, NULL, &cropRect),
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SkBlurImageFilter::Create(0.0f, 8.0f, NULL, &cropRect),
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SkBlurImageFilter::Create(8.0f, 8.0f, NULL, &cropRect),
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SkErodeImageFilter::Create(1, 1, NULL, &cropRect),
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SkErodeImageFilter::Create(8, 0, erodeY, &cropRect),
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SkErodeImageFilter::Create(0, 8, erodeX, &cropRect),
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SkErodeImageFilter::Create(8, 8, NULL, &cropRect),
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SkMergeImageFilter::Create(NULL, cfOffset.get(), SkXfermode::kSrcOver_Mode, &cropRect),
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SkBlurImageFilter::Create(8.0f, 8.0f, NULL, &bogusRect),
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SkColorFilterImageFilter::Create(cf.get(), NULL, &bogusRect),
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@ -143,6 +177,8 @@ protected:
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for (size_t j = 0; j < SK_ARRAY_COUNT(drawProc); ++j) {
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canvas->save();
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for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) {
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SkPaint paint;
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canvas->drawBitmap(fCheckerboard, 0, 0);
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drawProc[j](canvas, r, filters[i]);
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canvas->translate(0, DY);
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}
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@ -156,6 +192,7 @@ protected:
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}
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private:
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SkBitmap fCheckerboard;
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typedef GM INHERITED;
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};
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@ -303,9 +303,16 @@ public:
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return SkNEW_ARGS(GrMorphologyEffect, (tex, dir, radius, type));
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}
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static GrFragmentProcessor* Create(GrTexture* tex, Direction dir, int radius,
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MorphologyType type, float bounds[2]) {
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return SkNEW_ARGS(GrMorphologyEffect, (tex, dir, radius, type, bounds));
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}
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virtual ~GrMorphologyEffect();
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MorphologyType type() const { return fType; }
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bool useRange() const { return fUseRange; }
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const float* range() const { return fRange; }
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const char* name() const SK_OVERRIDE { return "Morphology"; }
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@ -316,6 +323,8 @@ public:
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protected:
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MorphologyType fType;
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bool fUseRange;
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float fRange[2];
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private:
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bool onIsEqual(const GrFragmentProcessor&) const SK_OVERRIDE;
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@ -323,6 +332,7 @@ private:
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void onComputeInvariantOutput(GrInvariantOutput* inout) const SK_OVERRIDE;
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GrMorphologyEffect(GrTexture*, Direction, int radius, MorphologyType);
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GrMorphologyEffect(GrTexture*, Direction, int radius, MorphologyType, float bounds[2]);
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GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
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@ -350,8 +360,11 @@ private:
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int width() const { return GrMorphologyEffect::WidthFromRadius(fRadius); }
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int fRadius;
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Gr1DKernelEffect::Direction fDirection;
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bool fUseRange;
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GrMorphologyEffect::MorphologyType fType;
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GrGLProgramDataManager::UniformHandle fImageIncrementUni;
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GrGLProgramDataManager::UniformHandle fPixelSizeUni;
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GrGLProgramDataManager::UniformHandle fRangeUni;
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typedef GrGLFragmentProcessor INHERITED;
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};
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@ -359,6 +372,8 @@ private:
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GrGLMorphologyEffect::GrGLMorphologyEffect(const GrProcessor& proc) {
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const GrMorphologyEffect& m = proc.cast<GrMorphologyEffect>();
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fRadius = m.radius();
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fDirection = m.direction();
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fUseRange = m.useRange();
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fType = m.type();
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}
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@ -368,9 +383,14 @@ void GrGLMorphologyEffect::emitCode(GrGLFPBuilder* builder,
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const char* inputColor,
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const TransformedCoordsArray& coords,
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const TextureSamplerArray& samplers) {
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fImageIncrementUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility,
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kVec2f_GrSLType, kDefault_GrSLPrecision,
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"ImageIncrement");
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fPixelSizeUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility,
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kFloat_GrSLType, kDefault_GrSLPrecision,
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"PixelSize");
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const char* pixelSizeInc = builder->getUniformCStr(fPixelSizeUni);
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fRangeUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility,
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kVec2f_GrSLType, kDefault_GrSLPrecision,
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"Range");
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const char* range = builder->getUniformCStr(fRangeUni);
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GrGLFPFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder();
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SkString coords2D = fsBuilder->ensureFSCoords2D(coords, 0);
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@ -389,14 +409,41 @@ void GrGLMorphologyEffect::emitCode(GrGLFPBuilder* builder,
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func = ""; // suppress warning
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break;
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}
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const char* imgInc = builder->getUniformCStr(fImageIncrementUni);
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fsBuilder->codeAppendf("\t\tvec2 coord = %s - %d.0 * %s;\n", coords2D.c_str(), fRadius, imgInc);
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fsBuilder->codeAppendf("\t\tfor (int i = 0; i < %d; i++) {\n", this->width());
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const char* dir;
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switch (fDirection) {
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case Gr1DKernelEffect::kX_Direction:
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dir = "x";
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break;
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case Gr1DKernelEffect::kY_Direction:
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dir = "y";
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break;
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default:
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SkFAIL("Unknown filter direction.");
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dir = ""; // suppress warning
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}
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// vec2 coord = coord2D;
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fsBuilder->codeAppendf("\t\tvec2 coord = %s;\n", coords2D.c_str());
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// coord.x -= radius * pixelSize;
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fsBuilder->codeAppendf("\t\tcoord.%s -= %d.0 * %s; \n", dir, fRadius, pixelSizeInc);
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if (fUseRange) {
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// highBound = min(highBound, coord.x + (width-1) * pixelSize);
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fsBuilder->codeAppendf("\t\tfloat highBound = min(%s.y, coord.%s + %f * %s);",
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range, dir, float(width() - 1), pixelSizeInc);
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// coord.x = max(lowBound, coord.x);
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fsBuilder->codeAppendf("\t\tcoord.%s = max(%s.x, coord.%s);", dir, range, dir);
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}
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fsBuilder->codeAppendf("\t\tfor (int i = 0; i < %d; i++) {\n", width());
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fsBuilder->codeAppendf("\t\t\t%s = %s(%s, ", outputColor, func, outputColor);
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fsBuilder->appendTextureLookup(samplers[0], "coord");
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fsBuilder->codeAppend(");\n");
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fsBuilder->codeAppendf("\t\t\tcoord += %s;\n", imgInc);
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// coord.x += pixelSize;
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fsBuilder->codeAppendf("\t\t\tcoord.%s += %s;\n", dir, pixelSizeInc);
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if (fUseRange) {
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// coord.x = min(highBound, coord.x);
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fsBuilder->codeAppendf("\t\t\tcoord.%s = min(highBound, coord.%s);", dir, dir);
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}
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fsBuilder->codeAppend("\t\t}\n");
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SkString modulate;
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GrGLSLMulVarBy4f(&modulate, outputColor, inputColor);
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@ -408,27 +455,41 @@ void GrGLMorphologyEffect::GenKey(const GrProcessor& proc,
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const GrMorphologyEffect& m = proc.cast<GrMorphologyEffect>();
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uint32_t key = static_cast<uint32_t>(m.radius());
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key |= (m.type() << 8);
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key |= (m.direction() << 9);
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if (m.useRange()) key |= 1 << 10;
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b->add32(key);
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}
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void GrGLMorphologyEffect::setData(const GrGLProgramDataManager& pdman,
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const GrProcessor& proc) {
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const Gr1DKernelEffect& kern = proc.cast<Gr1DKernelEffect>();
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GrTexture& texture = *kern.texture(0);
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// the code we generated was for a specific kernel radius
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SkASSERT(kern.radius() == fRadius);
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float imageIncrement[2] = { 0 };
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switch (kern.direction()) {
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const GrMorphologyEffect& m = proc.cast<GrMorphologyEffect>();
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GrTexture& texture = *m.texture(0);
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// the code we generated was for a specific kernel radius, direction and bound usage
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SkASSERT(m.radius() == fRadius);
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SkASSERT(m.direction() == fDirection);
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SkASSERT(m.useRange() == fUseRange);
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float pixelSize = 0.0f;
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switch (fDirection) {
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case Gr1DKernelEffect::kX_Direction:
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imageIncrement[0] = 1.0f / texture.width();
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pixelSize = 1.0f / texture.width();
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break;
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case Gr1DKernelEffect::kY_Direction:
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imageIncrement[1] = 1.0f / texture.height();
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pixelSize = 1.0f / texture.height();
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break;
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default:
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SkFAIL("Unknown filter direction.");
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}
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pdman.set2fv(fImageIncrementUni, 1, imageIncrement);
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pdman.set1f(fPixelSizeUni, pixelSize);
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if (fUseRange) {
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const float* range = m.range();
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if (fDirection && texture.origin() == kBottomLeft_GrSurfaceOrigin) {
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pdman.set2f(fRangeUni, 1.0f - range[1], 1.0f - range[0]);
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} else {
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pdman.set2f(fRangeUni, range[0], range[1]);
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}
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}
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}
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///////////////////////////////////////////////////////////////////////////////
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@ -438,10 +499,22 @@ GrMorphologyEffect::GrMorphologyEffect(GrTexture* texture,
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int radius,
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MorphologyType type)
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: Gr1DKernelEffect(texture, direction, radius)
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, fType(type) {
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, fType(type), fUseRange(false) {
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this->initClassID<GrMorphologyEffect>();
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}
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GrMorphologyEffect::GrMorphologyEffect(GrTexture* texture,
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Direction direction,
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int radius,
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MorphologyType type,
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float range[2])
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: Gr1DKernelEffect(texture, direction, radius)
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, fType(type), fUseRange(true) {
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this->initClassID<GrMorphologyEffect>();
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fRange[0] = range[0];
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fRange[1] = range[1];
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}
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GrMorphologyEffect::~GrMorphologyEffect() {
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}
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@ -456,6 +529,7 @@ bool GrMorphologyEffect::onIsEqual(const GrFragmentProcessor& sBase) const {
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const GrMorphologyEffect& s = sBase.cast<GrMorphologyEffect>();
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return (this->radius() == s.radius() &&
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this->direction() == s.direction() &&
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this->useRange() == s.useRange() &&
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this->type() == s.type());
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}
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@ -486,7 +560,26 @@ GrFragmentProcessor* GrMorphologyEffect::TestCreate(SkRandom* random,
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namespace {
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void apply_morphology_pass(GrContext* context,
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void apply_morphology_rect(GrContext* context,
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GrTexture* texture,
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const SkIRect& srcRect,
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const SkIRect& dstRect,
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int radius,
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GrMorphologyEffect::MorphologyType morphType,
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float bounds[2],
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Gr1DKernelEffect::Direction direction) {
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GrPaint paint;
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paint.addColorProcessor(GrMorphologyEffect::Create(texture,
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direction,
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radius,
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morphType,
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bounds))->unref();
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context->drawNonAARectToRect(paint, SkMatrix::I(), SkRect::Make(dstRect),
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SkRect::Make(srcRect));
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}
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void apply_morphology_rect_no_bounds(GrContext* context,
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GrTexture* texture,
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const SkIRect& srcRect,
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const SkIRect& dstRect,
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@ -502,6 +595,51 @@ void apply_morphology_pass(GrContext* context,
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SkRect::Make(srcRect));
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}
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void apply_morphology_pass(GrContext* context,
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GrTexture* texture,
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const SkIRect& srcRect,
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const SkIRect& dstRect,
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int radius,
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GrMorphologyEffect::MorphologyType morphType,
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Gr1DKernelEffect::Direction direction) {
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float bounds[2] = { 0.0f, 1.0f };
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SkIRect lowerSrcRect = srcRect, lowerDstRect = dstRect;
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SkIRect middleSrcRect = srcRect, middleDstRect = dstRect;
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SkIRect upperSrcRect = srcRect, upperDstRect = dstRect;
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if (direction == Gr1DKernelEffect::kX_Direction) {
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bounds[0] = (SkIntToScalar(srcRect.left()) + 0.5f) / texture->width();
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bounds[1] = (SkIntToScalar(srcRect.right()) - 0.5f) / texture->width();
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lowerSrcRect.fRight = srcRect.left() + radius;
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lowerDstRect.fRight = dstRect.left() + radius;
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upperSrcRect.fLeft = srcRect.right() - radius;
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upperDstRect.fLeft = dstRect.right() - radius;
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middleSrcRect.inset(radius, 0);
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middleDstRect.inset(radius, 0);
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} else {
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bounds[0] = (SkIntToScalar(srcRect.top()) + 0.5f) / texture->height();
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bounds[1] = (SkIntToScalar(srcRect.bottom()) - 0.5f) / texture->height();
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lowerSrcRect.fBottom = srcRect.top() + radius;
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lowerDstRect.fBottom = dstRect.top() + radius;
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upperSrcRect.fTop = srcRect.bottom() - radius;
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upperDstRect.fTop = dstRect.bottom() - radius;
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middleSrcRect.inset(0, radius);
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middleDstRect.inset(0, radius);
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}
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if (middleSrcRect.fLeft - middleSrcRect.fRight >= 0) {
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// radius covers srcRect; use bounds over entire draw
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apply_morphology_rect(context, texture, srcRect, dstRect, radius,
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morphType, bounds, direction);
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} else {
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// Draw upper and lower margins with bounds; middle without.
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apply_morphology_rect(context, texture, lowerSrcRect, lowerDstRect, radius,
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morphType, bounds, direction);
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apply_morphology_rect(context, texture, upperSrcRect, upperDstRect, radius,
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morphType, bounds, direction);
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apply_morphology_rect_no_bounds(context, texture, middleSrcRect, middleDstRect, radius,
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morphType, direction);
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}
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}
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bool apply_morphology(const SkBitmap& input,
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const SkIRect& rect,
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GrMorphologyEffect::MorphologyType morphType,
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