blob: bae2381b652a659a10feb620618f12fe771a581f [file] [log] [blame]
joshualitte4cee1f2015-05-11 13:04:28 -07001/*
2 * Copyright 2015 Google Inc.
3 *
4 * Use of this source code is governed by a BD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#include "gm.h"
9
10#include "SkCanvas.h"
11#include "SkSurface.h"
12#include "SkTextBlob.h"
13
14// This tests that we don't try to reuse textblobs from the GPU textblob cache across pixel geometry
15// changes when we have LCD. crbug/486744
16namespace skiagm {
17class TextBlobGeometryChange : public GM {
18public:
19 TextBlobGeometryChange() { }
20
21protected:
22 SkString onShortName() override {
23 return SkString("textblobgeometrychange");
24 }
25
26 SkISize onISize() override {
27 return SkISize::Make(kWidth, kHeight);
28 }
29
30 void onDraw(SkCanvas* canvas) override {
31 const char text[] = "Hamburgefons";
32
33 SkPaint paint;
caryclark1818acb2015-07-24 12:09:25 -070034 sk_tool_utils::set_portable_typeface(&paint);
joshualitte4cee1f2015-05-11 13:04:28 -070035 paint.setTextSize(20);
36 paint.setAntiAlias(true);
37 paint.setLCDRenderText(true);
38
39 SkTextBlobBuilder builder;
40
41 sk_tool_utils::add_to_text_blob(&builder, text, paint, 10, 10);
42
43 SkAutoTUnref<const SkTextBlob> blob(builder.build());
44
45 SkImageInfo info = SkImageInfo::MakeN32Premul(200, 200);
46 SkSurfaceProps props(0, kUnknown_SkPixelGeometry);
47 SkAutoTUnref<SkSurface> surface(canvas->newSurface(info, &props));
48 if (surface) {
49 SkCanvas* c = surface->getCanvas();
50
51 // LCD text on white background
52 SkRect rect = SkRect::MakeLTRB(0.f, 0.f, SkIntToScalar(kWidth), kHeight / 2.f);
53 SkPaint rectPaint;
54 rectPaint.setColor(0xffffffff);
55 canvas->drawRect(rect, rectPaint);
56 canvas->drawTextBlob(blob.get(), 10, 50, paint);
57
58 // This should not look garbled since we should disable LCD text in this case
59 // (i.e., unknown pixel geometry)
60 c->clear(0x00ffffff);
61 c->drawTextBlob(blob.get(), 10, 150, paint);
62 surface->draw(canvas, 0, 0, nullptr);
63 } else {
64 const char* text = "This test requires a surface";
65 size_t len = strlen(text);
66 SkPaint paint;
67 canvas->drawText(text, len, 10, 100, paint);
68 }
69 }
70
71private:
72 static const int kWidth = 200;
73 static const int kHeight = 200;
74
75 typedef GM INHERITED;
76};
77
78//////////////////////////////////////////////////////////////////////////////
79
halcanary385fe4d2015-08-26 13:07:48 -070080DEF_GM(return new TextBlobGeometryChange;)
joshualitte4cee1f2015-05-11 13:04:28 -070081}