| /* |
| * Copyright 2019 Google Inc. |
| * |
| * 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/SkImage.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkScalar.h" |
| #include "tools/DecodeUtils.h" |
| #include "tools/Resources.h" |
| |
| DEF_SIMPLE_GM(skbug_8664, canvas, 830, 550) { |
| const struct { |
| SkScalar fSx, fSy, fTx, fTy; |
| } xforms[] = { |
| { 1, 1, 0, 0 }, |
| { 0.5f, 0.5f, 530, 0 }, |
| { 0.25f, 0.25f, 530, 275 }, |
| { 0.125f, 0.125f, 530, 420 }, |
| }; |
| |
| // Must be at least medium to require mipmaps when we downscale the image |
| SkSamplingOptions sampling(SkFilterMode::kLinear, |
| SkMipmapMode::kLinear); |
| |
| sk_sp<SkImage> image(ToolUtils::GetResourceAsImage("images/mandrill_512.png")); |
| |
| SkPaint overlayPaint; |
| overlayPaint.setColor(0x80FFFFFF); |
| |
| // Make the overlay visible even when the downscaled images fail to render |
| canvas->clear(0xFF888888); |
| |
| canvas->translate(20, 20); |
| for (const auto& xform : xforms) { |
| canvas->save(); |
| canvas->translate(xform.fTx, xform.fTy); |
| canvas->scale(xform.fSx, xform.fSy); |
| |
| // Draw an image, possibly down sampled, which forces us to generate mipmaps inline |
| // on the second iteration. |
| canvas->drawImage(image, 0, 0, sampling, nullptr); |
| |
| // Draw an overlay that requires the scissor test for its clipping, so that the mipmap |
| // generation + scissor interference bug is highlighted in Adreno 330 devices. |
| SkRect inner = SkRect::MakeLTRB(32.f, 32.f, 480.f, 480.f); |
| SkRect outer = inner.makeOutset(16.f, 16.f); |
| |
| // Clip to smaller rectangle |
| canvas->save(); |
| canvas->clipRect(inner); |
| // Then apply a rotation and draw a larger rectangle to ensure the clip cannot be dropped |
| canvas->rotate(20.f); |
| canvas->drawRect(outer, overlayPaint); |
| canvas->restore(); |
| |
| canvas->restore(); |
| } |
| } |