52b346e34d
Change-Id: I0594d9e8d2495643a404bddee61d7f01c7c0103c Reviewed-on: https://skia-review.googlesource.com/7263 Reviewed-by: Robert Phillips <robertphillips@google.com> Commit-Queue: Robert Phillips <robertphillips@google.com>
88 lines
2.5 KiB
C++
88 lines
2.5 KiB
C++
/*
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* Copyright 2017 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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// This GM tests out the deprecated Android-specific unclipped saveLayer "feature".
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// In particular, it attempts to compare the performance of unclipped saveLayers with alternatives.
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static void save_layer_unclipped(SkCanvas* canvas,
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SkScalar l, SkScalar t, SkScalar r, SkScalar b) {
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static const uint32_t kSecretDeprecated_DontClipToLayerFlag = 1U << 31;
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SkRect rect = SkRect::MakeLTRB(l, t, r, b);
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canvas->saveLayer({ &rect, nullptr, nullptr, kSecretDeprecated_DontClipToLayerFlag });
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}
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static void do_draw(SkCanvas* canvas) {
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SkPaint paint;
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SkRandom rand;
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for (int i = 0; i < 20; ++i) {
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paint.setColor(sk_tool_utils::color_to_565(rand.nextU() | (0xFF << 24)));
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canvas->drawRect({ 15, 15, 290, 40 }, paint);
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canvas->translate(0, 30);
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}
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}
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class UnclippedSaveLayerGM : public skiagm::GM {
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public:
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enum class Mode {
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kClipped,
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kUnclipped
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};
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UnclippedSaveLayerGM(Mode mode) : fMode(mode) { this->setBGColor(SK_ColorWHITE); }
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protected:
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bool runAsBench() const override { return true; }
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SkString onShortName() override {
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if (Mode::kClipped == fMode) {
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return SkString("savelayer_unclipped");
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} else {
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SkASSERT(Mode::kUnclipped == fMode);
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return SkString("savelayer_clipped");
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}
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}
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SkISize onISize() override { return SkISize::Make(320, 640); }
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void onDraw(SkCanvas* canvas) override {
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const SkScalar L = 10;
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const SkScalar T = 10;
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const SkScalar R = 310;
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const SkScalar B = 630;
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canvas->clipRect({ L, T, R, B });
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for (int i = 0; i < 100; ++i) {
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SkAutoCanvasRestore acr(canvas, true);
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if (Mode::kClipped == fMode) {
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save_layer_unclipped(canvas, L, T, R, T + 20);
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save_layer_unclipped(canvas, L, B - 20, R, B);
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} else {
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SkASSERT(Mode::kUnclipped == fMode);
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canvas->saveLayer({ L, T, R, B }, nullptr);
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}
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do_draw(canvas);
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}
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}
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private:
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Mode fMode;
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typedef skiagm::GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_GM(return new UnclippedSaveLayerGM(UnclippedSaveLayerGM::Mode::kClipped);)
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DEF_GM(return new UnclippedSaveLayerGM(UnclippedSaveLayerGM::Mode::kUnclipped);)
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