Skbug6653.cpp File Reference

#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/gpu/ganesh/SkSurfaceGanesh.h"
#include "include/private/base/SkDebug.h"
#include "tests/CtsEnforcement.h"
#include "tests/Test.h"
#include <cstdint>

Go to the source code of this file.

Functions
static SkBitmap	read_pixels (sk_sp< SkSurface > surface, SkColor initColor)
static sk_sp< SkSurface >	make_surface (GrRecordingContext *rContext)
static void	test_bug_6653 (GrDirectContext *dContext, skiatest::Reporter *reporter, const char *label)
	DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS (skbug6653, reporter, ctxInfo, CtsEnforcement::kApiLevel_T)

Function Documentation

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS()

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS	(	skbug6653	,
		reporter	,
		ctxInfo	,
		CtsEnforcement::kApiLevel_T
	)

Definition at line 115 of file Skbug6653.cpp.

                                                                                                {
    auto ctx = ctxInfo.directContext();
    test_bug_6653(ctx, reporter, "Default");
}

make_surface()

static sk_sp< SkSurface > make_surface ( GrRecordingContext *  rContext )

static

Definition at line 42 of file Skbug6653.cpp.

                                                                   {
    SkImageInfo info = SkImageInfo::Make(50, 50, kRGBA_8888_SkColorType, kPremul_SkAlphaType);
    return SkSurfaces::RenderTarget(
            rContext, skgpu::Budgeted::kNo, info, 4, kBottomLeft_GrSurfaceOrigin, nullptr);
}

read_pixels()

static SkBitmap read_pixels ( sk_sp< SkSurface >  surface, SkColor  initColor  )

static

Definition at line 32 of file Skbug6653.cpp.

                                                                         {
    SkBitmap bmp;
    bmp.allocN32Pixels(surface->width(), surface->height());
    bmp.eraseColor(initColor);
    if (!surface->readPixels(bmp, 0, 0)) {
        SkDebugf("readPixels failed\n");
    }
    return bmp;
}

test_bug_6653()

static void test_bug_6653 ( GrDirectContext *  dContext, skiatest::Reporter *  reporter, const char *  label  )

static

Definition at line 48 of file Skbug6653.cpp.

                                             {
    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);
    }
}