Matt Sarett | 547a727 | 2017-04-12 11:52:47 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "gm.h" |
Brian Osman | 5b6fa82 | 2018-02-14 10:16:32 -0500 | [diff] [blame] | 9 | #include "Resources.h" |
Matt Sarett | 547a727 | 2017-04-12 11:52:47 -0400 | [diff] [blame] | 10 | #include "SkCanvas.h" |
| 11 | #include "SkSurface.h" |
Mike Reed | 46596ae | 2018-01-02 15:40:29 -0500 | [diff] [blame] | 12 | #include "sk_tool_utils.h" |
Matt Sarett | 547a727 | 2017-04-12 11:52:47 -0400 | [diff] [blame] | 13 | |
| 14 | static sk_sp<SkImage> make_image(SkCanvas* rootCanvas, SkColor color) { |
| 15 | SkImageInfo info = SkImageInfo::MakeN32Premul(100, 100); |
Cary Clark | a24712e | 2018-09-05 18:41:40 +0000 | [diff] [blame] | 16 | auto surface(sk_tool_utils::makeSurface(rootCanvas, info)); |
Matt Sarett | 547a727 | 2017-04-12 11:52:47 -0400 | [diff] [blame] | 17 | |
| 18 | SkPaint paint; |
| 19 | paint.setAntiAlias(true); |
| 20 | paint.setColor(color); |
| 21 | surface->getCanvas()->drawIRect(SkIRect::MakeXYWH(25, 25, 50, 50), paint); |
| 22 | return surface->makeImageSnapshot(); |
| 23 | } |
| 24 | |
| 25 | DEF_SIMPLE_GM(localmatriximageshader, canvas, 250, 250) { |
| 26 | sk_sp<SkImage> redImage = make_image(canvas, SK_ColorRED); |
| 27 | SkMatrix translate = SkMatrix::MakeTrans(100.0f, 0.0f); |
| 28 | SkMatrix rotate; |
| 29 | rotate.setRotate(45.0f); |
Mike Reed | 0acd795 | 2017-04-28 11:12:19 -0400 | [diff] [blame] | 30 | sk_sp<SkShader> redImageShader = redImage->makeShader(&translate); |
Matt Sarett | 547a727 | 2017-04-12 11:52:47 -0400 | [diff] [blame] | 31 | sk_sp<SkShader> redLocalMatrixShader = redImageShader->makeWithLocalMatrix(rotate); |
| 32 | |
| 33 | // Rotate about the origin will happen first. |
| 34 | SkPaint paint; |
| 35 | paint.setShader(redLocalMatrixShader); |
| 36 | canvas->drawIRect(SkIRect::MakeWH(250, 250), paint); |
| 37 | |
| 38 | sk_sp<SkImage> blueImage = make_image(canvas, SK_ColorBLUE); |
Mike Reed | 0acd795 | 2017-04-28 11:12:19 -0400 | [diff] [blame] | 39 | sk_sp<SkShader> blueImageShader = blueImage->makeShader(&rotate); |
Matt Sarett | 547a727 | 2017-04-12 11:52:47 -0400 | [diff] [blame] | 40 | sk_sp<SkShader> blueLocalMatrixShader = blueImageShader->makeWithLocalMatrix(translate); |
| 41 | |
| 42 | // Translate will happen first. |
| 43 | paint.setShader(blueLocalMatrixShader); |
| 44 | canvas->drawIRect(SkIRect::MakeWH(250, 250), paint); |
| 45 | |
| 46 | canvas->translate(100.0f, 0.0f); |
| 47 | |
| 48 | // Use isAImage() and confirm that the shaders will draw exactly the same (to the right by 100). |
| 49 | SkShader::TileMode mode[2]; |
| 50 | SkMatrix matrix; |
| 51 | SkImage* image = redLocalMatrixShader->isAImage(&matrix, mode); |
| 52 | paint.setShader(image->makeShader(mode[0], mode[1], &matrix)); |
| 53 | canvas->drawIRect(SkIRect::MakeWH(250, 250), paint); |
| 54 | image = blueLocalMatrixShader->isAImage(&matrix, mode); |
| 55 | paint.setShader(image->makeShader(mode[0], mode[1], &matrix)); |
| 56 | canvas->drawIRect(SkIRect::MakeWH(250, 250), paint); |
| 57 | } |
Brian Osman | 5b6fa82 | 2018-02-14 10:16:32 -0500 | [diff] [blame] | 58 | |
| 59 | DEF_SIMPLE_GM(localmatriximageshader_filtering, canvas, 256, 256) { |
| 60 | // Test that filtering decisions (eg bicubic for upscale) are made correctly when the scale |
| 61 | // comes from a local matrix shader. |
| 62 | auto image = GetResourceAsImage("images/mandrill_256.png"); |
| 63 | SkPaint p; |
| 64 | p.setFilterQuality(kHigh_SkFilterQuality); |
| 65 | SkMatrix m = SkMatrix::MakeScale(2.0f); |
| 66 | p.setShader(image->makeShader()->makeWithLocalMatrix(m)); |
| 67 | |
| 68 | canvas->drawRect(SkRect::MakeXYWH(0, 0, 256, 256), p); |
| 69 | } |