Add GM to track thin rectangle rendering
https://codereview.chromium.org/15012024/ git-svn-id: http://skia.googlecode.com/svn/trunk@9120 2bbb7eff-a529-9590-31e7-b0007b416f81
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gm/thinrects.cpp
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123
gm/thinrects.cpp
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/*
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* Copyright 2013 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm.h"
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namespace skiagm {
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// Draw various width thin rects at 1/8 horizontal pixel increments
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class ThinRectsGM : public GM {
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public:
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ThinRectsGM() {
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this->setBGColor(0xFF000000);
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}
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protected:
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virtual SkString onShortName() SK_OVERRIDE {
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return SkString("thinrects");
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}
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virtual SkISize onISize() SK_OVERRIDE {
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return make_isize(240, 320);
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}
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virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
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SkPaint white;
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white.setColor(SK_ColorWHITE);
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white.setAntiAlias(true);
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SkPaint green;
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green.setColor(SK_ColorGREEN);
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green.setAntiAlias(true);
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for (int i = 0; i < 8; ++i) {
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canvas->save();
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canvas->translate(i*0.125f, i*40.0f);
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DrawVertRects(canvas, white);
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canvas->translate(40.0f, 0.0f);
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DrawVertRects(canvas, green);
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canvas->restore();
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canvas->save();
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canvas->translate(80.0f, i*40.0f + i*0.125f);
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DrawHorizRects(canvas, white);
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canvas->translate(40.0f, 0.0f);
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DrawHorizRects(canvas, green);
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canvas->restore();
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canvas->save();
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canvas->translate(160.0f + i*0.125f,
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i*40.0f + i*0.125f);
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DrawSquares(canvas, white);
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canvas->translate(40.0f, 0.0f);
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DrawSquares(canvas, green);
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canvas->restore();
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}
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}
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private:
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static void DrawVertRects(SkCanvas* canvas, const SkPaint& p) {
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static const SkRect vertRects[] = {
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{ 1, 1, 5.0f, 21 }, // 4 pix wide
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{ 8, 1, 10.0f, 21 }, // 2 pix wide
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{ 13, 1, 14.0f, 21 }, // 1 pix wide
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{ 17, 1, 17.5f, 21 }, // 1/2 pix wide
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{ 21, 1, 21.25f, 21 }, // 1/4 pix wide
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{ 25, 1, 25.125f, 21 }, // 1/8 pix wide
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{ 29, 1, 29.0f, 21 } // 0 pix wide
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};
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for (int j = 0; j < SK_ARRAY_COUNT(vertRects); ++j) {
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canvas->drawRect(vertRects[j], p);
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}
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}
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static void DrawHorizRects(SkCanvas* canvas, const SkPaint& p) {
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static const SkRect horizRects[] = {
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{ 1, 1, 21, 5.0f }, // 4 pix high
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{ 1, 8, 21, 10.0f }, // 2 pix high
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{ 1, 13, 21, 14.0f }, // 1 pix high
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{ 1, 17, 21, 17.5f }, // 1/2 pix high
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{ 1, 21, 21, 21.25f }, // 1/4 pix high
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{ 1, 25, 21, 25.125f }, // 1/8 pix high
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{ 1, 29, 21, 29.0f } // 0 pix high
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};
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for (int j = 0; j < SK_ARRAY_COUNT(horizRects); ++j) {
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canvas->drawRect(horizRects[j], p);
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}
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}
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static void DrawSquares(SkCanvas* canvas, const SkPaint& p) {
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static const SkRect squares[] = {
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{ 1, 1, 5.0f, 5.0f }, // 4 pix
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{ 8, 8, 10.0f, 10.0f }, // 2 pix
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{ 13, 13, 14.0f, 14.0f }, // 1 pix
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{ 17, 17, 17.5f, 17.5f }, // 1/2 pix
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{ 21, 21, 21.25f, 21.25f }, // 1/4 pix
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{ 25, 25, 25.125f, 25.125f }, // 1/8 pix
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{ 29, 29, 29.0f, 29.0f } // 0 pix
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};
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for (int j = 0; j < SK_ARRAY_COUNT(squares); ++j) {
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canvas->drawRect(squares[j], p);
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}
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}
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typedef GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static GM* MyFactory(void*) { return new ThinRectsGM; }
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static GMRegistry reg(MyFactory);
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}
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@ -98,6 +98,7 @@
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'../gm/texteffects.cpp',
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'../gm/testimagefilters.cpp',
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'../gm/texdata.cpp',
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'../gm/thinrects.cpp',
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'../gm/tilemodes.cpp',
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'../gm/tinybitmap.cpp',
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'../gm/twopointradial.cpp',
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