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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file
*/
#include "SkCanvas.h"
#include "SkSpecialImage.h"
#include "SkSpecialSurface.h"
#include "Test.h"
#if SK_SUPPORT_GPU
#include "GrContext.h"
#include "SkGr.h"
#endif
class TestingSpecialSurfaceAccess {
public:
static const SkIRect& Subset(const SkSpecialSurface* surf) {
return surf->subset();
}
static const SkIRect& Subset(const SkSpecialImage* img) {
return img->subset();
}
};
// Both 'kSmallerSize' and 'kFullSize' need to be a non-power-of-2 to exercise
// the gpu's loose fit behavior
static const int kSmallerSize = 10;
static const int kPad = 5;
static const int kFullSize = kSmallerSize + 2 * kPad;
// Exercise the public API of SkSpecialSurface (e.g., getCanvas, newImageSnapshot)
static void test_surface(const sk_sp<SkSpecialSurface>& surf,
skiatest::Reporter* reporter,
int offset) {
const SkIRect surfSubset = TestingSpecialSurfaceAccess::Subset(surf.get());
REPORTER_ASSERT(reporter, offset == surfSubset.fLeft);
REPORTER_ASSERT(reporter, offset == surfSubset.fTop);
REPORTER_ASSERT(reporter, kSmallerSize == surfSubset.width());
REPORTER_ASSERT(reporter, kSmallerSize == surfSubset.height());
SkCanvas* canvas = surf->getCanvas();
SkASSERT_RELEASE(canvas);
canvas->clear(SK_ColorRED);
sk_sp<SkSpecialImage> img(surf->makeImageSnapshot());
REPORTER_ASSERT(reporter, img);
const SkIRect imgSubset = TestingSpecialSurfaceAccess::Subset(img.get());
REPORTER_ASSERT(reporter, surfSubset == imgSubset);
// the canvas was invalidated by the newImageSnapshot call
REPORTER_ASSERT(reporter, !surf->getCanvas());
}
DEF_TEST(SpecialSurface_Raster, reporter) {
SkImageInfo info = SkImageInfo::MakeN32(kSmallerSize, kSmallerSize, kOpaque_SkAlphaType);
sk_sp<SkSpecialSurface> surf(SkSpecialSurface::MakeRaster(nullptr, info));
test_surface(surf, reporter, 0);
}
DEF_TEST(SpecialSurface_Raster2, reporter) {
SkBitmap bm;
bm.allocN32Pixels(kFullSize, kFullSize, true);
const SkIRect subset = SkIRect::MakeXYWH(kPad, kPad, kSmallerSize, kSmallerSize);
sk_sp<SkSpecialSurface> surf(SkSpecialSurface::MakeFromBitmap(nullptr, subset, bm));
test_surface(surf, reporter, kPad);
// TODO: check that the clear didn't escape the active region
}
#if SK_SUPPORT_GPU
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(SpecialSurface_Gpu1, reporter, context) {
GrSurfaceDesc desc;
desc.fConfig = kSkia8888_GrPixelConfig;
desc.fFlags = kRenderTarget_GrSurfaceFlag;
desc.fWidth = kSmallerSize;
desc.fHeight = kSmallerSize;
sk_sp<SkSpecialSurface> surf(SkSpecialSurface::MakeRenderTarget(nullptr, context, desc));
test_surface(surf, reporter, 0);
}
// test the more flexible factory
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(SpecialSurface_Gpu2, reporter, context) {
GrSurfaceDesc desc;
desc.fConfig = kSkia8888_GrPixelConfig;
desc.fFlags = kRenderTarget_GrSurfaceFlag;
desc.fWidth = kFullSize;
desc.fHeight = kFullSize;
SkAutoTUnref<GrTexture> temp(context->textureProvider()->createApproxTexture(desc));
SkASSERT_RELEASE(temp);
const SkIRect subset = SkIRect::MakeXYWH(kPad, kPad, kSmallerSize, kSmallerSize);
sk_sp<SkSpecialSurface> surf(SkSpecialSurface::MakeFromTexture(nullptr, subset, temp));
test_surface(surf, reporter, kPad);
// TODO: check that the clear didn't escape the active region
}
#endif
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