| /* |
| * Copyright 2017 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "include/core/SkAlphaType.h" |
| #include "include/core/SkBitmap.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkColorType.h" |
| #include "include/core/SkImageInfo.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkSurface.h" |
| #include "include/core/SkTypes.h" |
| #include "include/gpu/GpuTypes.h" |
| #include "include/gpu/GrDirectContext.h" |
| #include "include/gpu/GrTypes.h" |
| #include "include/private/base/SkDebug.h" |
| #include "tests/CtsEnforcement.h" |
| #include "tests/Test.h" |
| |
| #include <cstdint> |
| |
| class GrRecordingContext; |
| struct GrContextOptions; |
| |
| static SkBitmap read_pixels(sk_sp<SkSurface> surface, SkColor initColor) { |
| SkBitmap bmp; |
| bmp.allocN32Pixels(surface->width(), surface->height()); |
| bmp.eraseColor(initColor); |
| if (!surface->readPixels(bmp, 0, 0)) { |
| SkDebugf("readPixels failed\n"); |
| } |
| return bmp; |
| } |
| |
| static sk_sp<SkSurface> make_surface(GrRecordingContext* rContext) { |
| SkImageInfo info = SkImageInfo::Make(50, 50, kRGBA_8888_SkColorType, kPremul_SkAlphaType); |
| return SkSurface::MakeRenderTarget( |
| rContext, skgpu::Budgeted::kNo, info, 4, kBottomLeft_GrSurfaceOrigin, nullptr); |
| } |
| |
| static void test_bug_6653(GrDirectContext* dContext, |
| skiatest::Reporter* reporter, |
| const char* label) { |
| SkRect rect = SkRect::MakeWH(50, 50); |
| |
| SkPaint paint; |
| paint.setColor(SK_ColorWHITE); |
| paint.setStrokeWidth(5); |
| paint.setStyle(SkPaint::kStroke_Style); |
| |
| // The one device that fails this test (Galaxy S6) does so in a flaky fashion. Trying many |
| // times makes it more likely to fail. Also, interacting with the phone (eg swiping between |
| // different home screens) while the test is running makes it fail close to 100%. |
| static const int kNumIterations = 50; |
| |
| for (int i = 0; i < kNumIterations; ++i) { |
| auto s0 = make_surface(dContext); |
| if (!s0) { |
| // MSAA may not be supported |
| return; |
| } |
| |
| auto s1 = make_surface(dContext); |
| s1->getCanvas()->clear(SK_ColorBLACK); |
| s1->getCanvas()->drawOval(rect, paint); |
| SkBitmap b1 = read_pixels(s1, SK_ColorBLACK); |
| s1 = nullptr; |
| |
| // The bug requires that all three of the following surfaces are cleared to the same color |
| auto s2 = make_surface(dContext); |
| s2->getCanvas()->clear(SK_ColorBLUE); |
| SkBitmap b2 = read_pixels(s2, SK_ColorBLACK); |
| s2 = nullptr; |
| |
| auto s3 = make_surface(dContext); |
| s3->getCanvas()->clear(SK_ColorBLUE); |
| s0->getCanvas()->drawImage(read_pixels(s3, SK_ColorBLACK).asImage(), 0, 0); |
| s3 = nullptr; |
| |
| auto s4 = make_surface(dContext); |
| s4->getCanvas()->clear(SK_ColorBLUE); |
| s4->getCanvas()->drawOval(rect, paint); |
| |
| // When this fails, b4 will "succeed", but return an empty bitmap (containing just the |
| // clear color). Regardless, b5 will contain the oval that was just drawn, so diffing the |
| // two bitmaps tests for the failure case. Initialize the bitmaps to different colors so |
| // that if the readPixels doesn't work, this test will always fail. |
| SkBitmap b4 = read_pixels(s4, SK_ColorRED); |
| SkBitmap b5 = read_pixels(s4, SK_ColorGREEN); |
| |
| bool match = true; |
| for (int y = 0; y < b4.height() && match; ++y) { |
| for (int x = 0; x < b4.width() && match; ++x) { |
| uint32_t pixelA = *b4.getAddr32(x, y); |
| uint32_t pixelB = *b5.getAddr32(x, y); |
| if (pixelA != pixelB) { |
| match = false; |
| } |
| } |
| } |
| |
| REPORTER_ASSERT(reporter, match, "%s", label); |
| } |
| } |
| |
| // Tests that readPixels returns up-to-date results. This has failed on several GPUs, |
| // from multiple vendors, in MSAA mode. |
| DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS(skbug6653, reporter, ctxInfo, CtsEnforcement::kApiLevel_T) { |
| auto ctx = ctxInfo.directContext(); |
| test_bug_6653(ctx, reporter, "Default"); |
| } |