| /* |
| * Copyright 2021 Google LLC |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "gm/gm.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkMatrix.h" |
| #include "include/core/SkRect.h" |
| #include "src/base/SkFloatBits.h" |
| |
| // Outsetting of very thin, nearly line, quads for AA would go haywire and draw far outside of the |
| // quad. Artifacts seemed to occur more when coord values are large, hence the large GM size. At the |
| // time of GM creation this was fixed by dropping AA, which makes these quads practically never draw |
| // as it's very unlikely a pixel center would fall inside the geometry. |
| DEF_SIMPLE_GM(crbug_1174186, canvas, 1200, 1200) { |
| auto m = SkMatrix::MakeAll( |
| SkBits2Float(0x24480629), SkBits2Float(0xbf3555c2), SkBits2Float(0x4377d67b), |
| SkBits2Float(0x23a61d51), SkBits2Float(0x3f34b400), SkBits2Float(0x4453f572), |
| SkBits2Float(0x00000000), SkBits2Float(0x00000000), SkBits2Float(0x3f800000)); |
| |
| SkPoint pts[] = {{SkBits2Float(0x3f7ffff2), SkBits2Float(0x43483d60)}, |
| {SkBits2Float(0x00000000), SkBits2Float(0x43483d60)}, |
| {SkBits2Float(0x00000000), SkBits2Float(0x4311a628)}, |
| {SkBits2Float(0x3f800000), SkBits2Float(0x43130f8c)}}; |
| SkColor color = SK_ColorGREEN; |
| canvas->translate(-500, 0); |
| for (int i = 0; i < 10; ++i) { |
| for (int flags = 0; flags < static_cast<int>(SkCanvas::kAll_QuadAAFlags); ++flags) { |
| SkCanvas::QuadAAFlags aaFlags = static_cast<SkCanvas::QuadAAFlags>(flags); |
| canvas->save(); |
| canvas->concat(m); |
| canvas->experimental_DrawEdgeAAQuad(SkRect::MakeWH(1000, 1000), pts, aaFlags, color, |
| SkBlendMode::kSrcOver); |
| canvas->restore(); |
| canvas->translate(5.1f, 0); |
| SkColor rgb = color & 0x00FFFFFF; |
| color = 0xFF000000 | (rgb << 4) | (rgb >> 20); |
| } |
| } |
| } |