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skia2/gm/displacement.cpp
John Stiles a6841be235 Enable ClangTidy check llvm-namespace-comment. 
This fixes a large number of SkSL namespaces which were labeled as if
they were anonymous, and also a handful of other mislabeled namespaces.
Missing namespace-end comments have been added throughout.
A number of diffs are just indentation-related (adjusting 1- or 3-
space indents to 2-space).

Change-Id: I6c62052a0d3aea4ae12ca07e0c2a8587b2fce4ec
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/308503
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
2020-08-06 19:07:52 +00:00

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/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm/gm.h"
#include "include/core/SkBitmap.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkImage.h"
#include "include/core/SkImageFilter.h"
#include "include/core/SkPaint.h"
#include "include/core/SkRect.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkScalar.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/effects/SkImageFilters.h"
#include "tools/ToolUtils.h"
#include <utility>
namespace skiagm {
class DisplacementMapGM : public GM {
public:
DisplacementMapGM() {
this->setBGColor(0xFF000000);
}
protected:
SkString onShortName() override {
return SkString("displacement");
}
void onOnceBeforeDraw() override {
fBitmap = ToolUtils::create_string_bitmap(80, 80, 0xFF884422, 15, 55, 96, "g");
SkColor c1 = ToolUtils::color_to_565(0xFF244484);
SkColor c2 = ToolUtils::color_to_565(0xFF804020);
fCheckerboard =
SkImage::MakeFromBitmap(ToolUtils::create_checkerboard_bitmap(80, 80, c1, c2, 8));
fSmall = SkImage::MakeFromBitmap(ToolUtils::create_checkerboard_bitmap(64, 64, c1, c2, 8));
fLarge = SkImage::MakeFromBitmap(ToolUtils::create_checkerboard_bitmap(96, 96, c1, c2, 8));
fLargeW = SkImage::MakeFromBitmap(ToolUtils::create_checkerboard_bitmap(96, 64, c1, c2, 8));
fLargeH = SkImage::MakeFromBitmap(ToolUtils::create_checkerboard_bitmap(64, 96, c1, c2, 8));
}
SkISize onISize() override {
return SkISize::Make(600, 500);
}
void drawClippedBitmap(SkCanvas* canvas, int x, int y, const SkPaint& paint) const {
canvas->save();
canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
canvas->clipRect(SkRect::MakeWH(SkIntToScalar(fBitmap.width()), SkIntToScalar(fBitmap.height())));
canvas->drawBitmap(fBitmap, 0, 0, &paint);
canvas->restore();
}
void onDraw(SkCanvas* canvas) override {
canvas->clear(SK_ColorBLACK);
SkPaint paint;
sk_sp<SkImageFilter> displ(SkImageFilters::Image(fCheckerboard));
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kR, SkColorChannel::kG, 0.0f, displ, nullptr));
this->drawClippedBitmap(canvas, 0, 0, paint);
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kB, SkColorChannel::kA, 16.0f, displ, nullptr));
this->drawClippedBitmap(canvas, 100, 0, paint);
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kR, SkColorChannel::kB, 32.0f, displ, nullptr));
this->drawClippedBitmap(canvas, 200, 0, paint);
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kG, SkColorChannel::kA, 48.0f, displ, nullptr));
this->drawClippedBitmap(canvas, 300, 0, paint);
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kR, SkColorChannel::kA, 64.0f, displ, nullptr));
this->drawClippedBitmap(canvas, 400, 0, paint);
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kR, SkColorChannel::kG, 40.0f, displ, nullptr));
this->drawClippedBitmap(canvas, 0, 100, paint);
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kB, SkColorChannel::kA, 40.0f, displ, nullptr));
this->drawClippedBitmap(canvas, 100, 100, paint);
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kR, SkColorChannel::kB, 40.0f, displ, nullptr));
this->drawClippedBitmap(canvas, 200, 100, paint);
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kG, SkColorChannel::kA, 40.0f, displ, nullptr));
this->drawClippedBitmap(canvas, 300, 100, paint);
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kR, SkColorChannel::kA, 40.0f, displ, nullptr));
this->drawClippedBitmap(canvas, 400, 100, paint);
SkIRect cropRect = SkIRect::MakeXYWH(30, 30, 40, 40);
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kR, SkColorChannel::kG, 0.0f, displ, nullptr, &cropRect));
this->drawClippedBitmap(canvas, 0, 200, paint);
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kB, SkColorChannel::kA, 16.0f, displ, nullptr, &cropRect));
this->drawClippedBitmap(canvas, 100, 200, paint);
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kR, SkColorChannel::kB, 32.0f, displ, nullptr, &cropRect));
this->drawClippedBitmap(canvas, 200, 200, paint);
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kG, SkColorChannel::kA, 48.0f, displ, nullptr, &cropRect));
this->drawClippedBitmap(canvas, 300, 200, paint);
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kR, SkColorChannel::kA, 64.0f, displ, nullptr, &cropRect));
this->drawClippedBitmap(canvas, 400, 200, paint);
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kR, SkColorChannel::kG, 40.0f, displ, nullptr, &cropRect));
this->drawClippedBitmap(canvas, 0, 300, paint);
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kB, SkColorChannel::kA, 40.0f, displ, nullptr, &cropRect));
this->drawClippedBitmap(canvas, 100, 300, paint);
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kR, SkColorChannel::kB, 40.0f, displ, nullptr, &cropRect));
this->drawClippedBitmap(canvas, 200, 300, paint);
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kG, SkColorChannel::kA, 40.0f, displ, nullptr, &cropRect));
this->drawClippedBitmap(canvas, 300, 300, paint);
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kR, SkColorChannel::kA, 40.0f, displ, nullptr, &cropRect));
this->drawClippedBitmap(canvas, 400, 300, paint);
// Test for negative scale.
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kG, SkColorChannel::kA, -40.0f, displ, nullptr));
this->drawClippedBitmap(canvas, 500, 0, paint);
// Tests for images of different sizes
displ = SkImageFilters::Image(fSmall);
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kR, SkColorChannel::kG, 40.0f, std::move(displ), nullptr));
this->drawClippedBitmap(canvas, 0, 400, paint);
displ = SkImageFilters::Image(fLarge);
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kB, SkColorChannel::kA, 40.0f, std::move(displ), nullptr));
this->drawClippedBitmap(canvas, 100, 400, paint);
displ = SkImageFilters::Image(fLargeW);
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kR, SkColorChannel::kB, 40.0f, std::move(displ), nullptr));
this->drawClippedBitmap(canvas, 200, 400, paint);
displ = SkImageFilters::Image(fLargeH);
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kG, SkColorChannel::kA, 40.0f, std::move(displ), nullptr));
this->drawClippedBitmap(canvas, 300, 400, paint);
// Test for no given displacement input. In this case, both displacement
// and color should use the same bitmap, given to SkCanvas::drawBitmap()
// as an input argument.
paint.setImageFilter(SkImageFilters::DisplacementMap(
SkColorChannel::kG, SkColorChannel::kA, 40.0f, nullptr, nullptr));
this->drawClippedBitmap(canvas, 400, 400, paint);
}
private:
SkBitmap fBitmap;
sk_sp<SkImage> fCheckerboard, fSmall, fLarge, fLargeW, fLargeH;
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new DisplacementMapGM;)
} // namespace skiagm
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