Michael Ludwig | 4edd420 | 2019-01-15 12:09:25 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2019 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" |
| 9 | |
| 10 | #include "Resources.h" |
| 11 | |
| 12 | DEF_SIMPLE_GM(skbug_8664, canvas, 830, 550) { |
| 13 | const struct { |
| 14 | SkScalar fSx, fSy, fTx, fTy; |
| 15 | } xforms[] = { |
| 16 | { 1, 1, 0, 0 }, |
| 17 | { 0.5f, 0.5f, 530, 0 }, |
| 18 | { 0.25f, 0.25f, 530, 275 }, |
| 19 | { 0.125f, 0.125f, 530, 420 }, |
| 20 | }; |
| 21 | |
| 22 | SkPaint imagePaint; |
| 23 | // Must be at least medium to require mipmaps when we downscale the image |
| 24 | imagePaint.setFilterQuality(kMedium_SkFilterQuality); |
| 25 | sk_sp<SkImage> image(GetResourceAsImage("images/mandrill_512.png")); |
| 26 | |
| 27 | SkPaint overlayPaint; |
| 28 | overlayPaint.setColor(0x80FFFFFF); |
| 29 | |
| 30 | // Make the overlay visible even when the downscaled images fail to render |
| 31 | canvas->clear(0xFF888888); |
| 32 | |
| 33 | canvas->translate(20, 20); |
| 34 | for (const auto& xform : xforms) { |
| 35 | canvas->save(); |
| 36 | canvas->translate(xform.fTx, xform.fTy); |
| 37 | canvas->scale(xform.fSx, xform.fSy); |
| 38 | |
| 39 | // Draw an image, possibly down sampled, which forces us to generate mipmaps inline |
| 40 | // on the second iteration. |
| 41 | canvas->drawImage(image, 0, 0, &imagePaint); |
| 42 | |
| 43 | // Draw an overlay that requires the scissor test for its clipping, so that the mipmap |
| 44 | // generation + scissor interference bug is highlighted in Adreno 330 devices. |
| 45 | SkRect inner = SkRect::MakeLTRB(32.f, 32.f, 480.f, 480.f); |
| 46 | SkRect outer = inner.makeOutset(16.f, 16.f); |
| 47 | |
| 48 | // Clip to smaller rectangle |
| 49 | canvas->save(); |
| 50 | canvas->clipRect(inner); |
| 51 | // Then apply a rotation and draw a larger rectangle to ensure the clip cannot be dropped |
| 52 | canvas->rotate(20.f); |
| 53 | canvas->drawRect(outer, overlayPaint); |
| 54 | canvas->restore(); |
| 55 | |
| 56 | canvas->restore(); |
| 57 | } |
| 58 | } |