skia2/gm/emboss.cpp

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/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm.h"
#include "SkBlurMask.h"
#include "SkCanvas.h"
#include "SkColorFilter.h"
#include "SkEmbossMaskFilter.h"
#include "SkFont.h"
static SkBitmap make_bm() {
SkBitmap bm;
bm.allocN32Pixels(100, 100);
SkCanvas canvas(bm);
canvas.clear(0);
SkPaint paint;
paint.setAntiAlias(true);
canvas.drawCircle(50, 50, 50, paint);
return bm;
}
class EmbossGM : public skiagm::GM {
public:
EmbossGM() {
}
protected:
SkString onShortName() override {
return SkString("emboss");
}
SkISize onISize() override {
return SkISize::Make(600, 120);
}
void onDraw(SkCanvas* canvas) override {
SkPaint paint;
SkBitmap bm = make_bm();
canvas->drawBitmap(bm, 10, 10, &paint);
canvas->translate(bm.width() + SkIntToScalar(10), 0);
paint.setMaskFilter(SkEmbossMaskFilter::Make(
SkBlurMask::ConvertRadiusToSigma(3),
{ { SK_Scalar1, SK_Scalar1, SK_Scalar1 }, 0, 128, 16*2 }));
Revert "Alloc glyph image correctly for SkMask::k3D_Format." This reverts commit 1662257bdaaaf26b016bf2a3e329c34f7f5ed581. Reason for revert: Android still using this API Original change's description: > Alloc glyph image correctly for SkMask::k3D_Format. > > Remove the no longer used outside Skia SK_SUPPORT_LEGACY_EMBOSSMASKFILTER > define, and either delete the code it guards or update it to use the new > emboss mask filter factory. > > Re-enable the code to test the emboss mask filter. > > Add a test to ensure that embossed text is drawn correctly, as before > glyphs did not allocate the proper amount of memory for the k3D_Format > which the emboss mask filter produces. > > Fixes SkEmbossMask::Emboss to write the whole of the mul and add planes > to avoid pixel differences and MemorySanitizer errors. > > Update the GPU to understand the k3D_Format and use just the alpha > plane, ignoring the mul and add plane which it currently cannot support. > > Change-Id: Icac1a3f37d6e8c6be3151df570f5e14111e18585 > Reviewed-on: https://skia-review.googlesource.com/70260 > Reviewed-by: Herb Derby <herb@google.com> > Reviewed-on: https://skia-review.googlesource.com/70962 > Commit-Queue: Ben Wagner <bungeman@google.com> TBR=djsollen@google.com,bungeman@google.com,herb@google.com Change-Id: Id6625bae8d3bd70ce7aa3045348c04fdd146c637 No-Presubmit: true No-Tree-Checks: true No-Try: true Reviewed-on: https://skia-review.googlesource.com/71183 Reviewed-by: Brian Osman <brianosman@google.com> Commit-Queue: Brian Osman <brianosman@google.com>
2017-11-14 16:16:39 +00:00
canvas->drawBitmap(bm, 10, 10, &paint);
canvas->translate(bm.width() + SkIntToScalar(10), 0);
// this combination of emboss+colorfilter used to crash -- so we exercise it to
// confirm that we have a fix.
paint.setColorFilter(SkColorFilters::Blend(0xFFFF0000, SkBlendMode::kSrcATop));
Revert "Alloc glyph image correctly for SkMask::k3D_Format." This reverts commit 1662257bdaaaf26b016bf2a3e329c34f7f5ed581. Reason for revert: Android still using this API Original change's description: > Alloc glyph image correctly for SkMask::k3D_Format. > > Remove the no longer used outside Skia SK_SUPPORT_LEGACY_EMBOSSMASKFILTER > define, and either delete the code it guards or update it to use the new > emboss mask filter factory. > > Re-enable the code to test the emboss mask filter. > > Add a test to ensure that embossed text is drawn correctly, as before > glyphs did not allocate the proper amount of memory for the k3D_Format > which the emboss mask filter produces. > > Fixes SkEmbossMask::Emboss to write the whole of the mul and add planes > to avoid pixel differences and MemorySanitizer errors. > > Update the GPU to understand the k3D_Format and use just the alpha > plane, ignoring the mul and add plane which it currently cannot support. > > Change-Id: Icac1a3f37d6e8c6be3151df570f5e14111e18585 > Reviewed-on: https://skia-review.googlesource.com/70260 > Reviewed-by: Herb Derby <herb@google.com> > Reviewed-on: https://skia-review.googlesource.com/70962 > Commit-Queue: Ben Wagner <bungeman@google.com> TBR=djsollen@google.com,bungeman@google.com,herb@google.com Change-Id: Id6625bae8d3bd70ce7aa3045348c04fdd146c637 No-Presubmit: true No-Tree-Checks: true No-Try: true Reviewed-on: https://skia-review.googlesource.com/71183 Reviewed-by: Brian Osman <brianosman@google.com> Commit-Queue: Brian Osman <brianosman@google.com>
2017-11-14 16:16:39 +00:00
canvas->drawBitmap(bm, 10, 10, &paint);
canvas->translate(bm.width() + SkIntToScalar(10), 0);
paint.setAntiAlias(true);
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(SkIntToScalar(10));
paint.setMaskFilter(SkEmbossMaskFilter::Make(
SkBlurMask::ConvertRadiusToSigma(4),
{ { SK_Scalar1, SK_Scalar1, SK_Scalar1 }, 0, 128, 16*2 }));
paint.setColorFilter(nullptr);
paint.setShader(SkShaders::Color(SK_ColorBLUE));
paint.setDither(true);
canvas->drawCircle(SkIntToScalar(50), SkIntToScalar(50),
SkIntToScalar(30), paint);
canvas->translate(SkIntToScalar(100), 0);
paint.setStyle(SkPaint::kFill_Style);
canvas->drawString("Hello", 0, 50, SkFont(nullptr, 50), paint);
}
private:
typedef skiagm::GM INHERITED;
};
DEF_GM(return new EmbossGM;)