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- /*
- * 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();
- }
- }
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