diff options
author | 2015-02-19 11:39:46 -0800 | |
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committer | 2015-02-19 11:39:46 -0800 | |
commit | c8e4765b8e72f6792bd739ce871f2f1e9f878d10 (patch) | |
tree | e90bc635314b4434f8103324168148fa9ad4e8f5 /gm/mipmap.cpp | |
parent | ddf30e64fe474847b204d7062fad3341d245062c (diff) |
gm to illustrate mipmap layer choice
BUG=skia:
NOTREECHECKS=True
TBR=
Review URL: https://codereview.chromium.org/942593002
Diffstat (limited to 'gm/mipmap.cpp')
-rw-r--r-- | gm/mipmap.cpp | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/gm/mipmap.cpp b/gm/mipmap.cpp new file mode 100644 index 0000000000..948fd99ded --- /dev/null +++ b/gm/mipmap.cpp @@ -0,0 +1,68 @@ +/* + * Copyright 2015 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 "SkCanvas.h" +#include "SkImage.h" +#include "SkRandom.h" +#include "SkSurface.h" + +static SkImage* make_image() { + const SkImageInfo info = SkImageInfo::MakeN32Premul(319, 52); + SkAutoTUnref<SkSurface> surface(SkSurface::NewRaster(info)); + SkCanvas* canvas = surface->getCanvas(); + canvas->drawColor(0xFFF8F8F8); + + SkPaint paint; + paint.setAntiAlias(true); + + paint.setStyle(SkPaint::kStroke_Style); + for (int i = 0; i < 20; ++i) { + canvas->drawCircle(-4, 25, 20, paint); + canvas->translate(25, 0); + } + return surface->newImageSnapshot(); +} + +static void test_mip(SkCanvas* canvas) { + SkAutoTUnref<SkImage> img(make_image());//SkImage::NewFromData(data)); + + SkPaint paint; + const SkRect dst = SkRect::MakeWH(177, 15); + + paint.setTextSize(30); + SkString str; + str.printf("scale %g %g", dst.width() / img->width(), dst.height() / img->height()); +// canvas->drawText(str.c_str(), str.size(), 300, 100, paint); + + canvas->translate(20, 20); + for (int i = 0; i < 4; ++i) { + paint.setFilterLevel(SkPaint::FilterLevel(i)); + canvas->drawImageRect(img, NULL, dst, &paint); + canvas->translate(0, 20); + } + canvas->drawImage(img, 20, 20, NULL); +} + +class MipMapGM : public skiagm::GM { +public: + MipMapGM() {} + +protected: + SkString onShortName() SK_OVERRIDE { return SkString("mipmap"); } + + SkISize onISize() SK_OVERRIDE { return SkISize::Make(400, 200); } + + void onDraw(SkCanvas* canvas) SK_OVERRIDE { + test_mip(canvas); + } + +private: + typedef skiagm::GM INHERITED; +}; +DEF_GM( return new MipMapGM; ) + |