/* * 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/SkFilterQuality.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/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 }, }; SkPaint imagePaint; // Must be at least medium to require mipmaps when we downscale the image imagePaint.setFilterQuality(kMedium_SkFilterQuality); sk_sp<SkImage> image(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, &imagePaint); // 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(); } }