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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 "SkAutoPixmapStorage.h"
#include "SkBitmap.h"
#include "SkCanvas.h"
#include "SkImage.h"
#include "SkPixmap.h"
#include "SkSpecialImage.h"
#include "SkSpecialSurface.h"
#include "Test.h"
#include "TestingSpecialImageAccess.h"
#if SK_SUPPORT_GPU
#include "GrContext.h"
#endif
// This test creates backing resources exactly sized to [kFullSize x kFullSize].
// It then wraps them in an SkSpecialImage with only the center (red) region being active.
// It then draws the SkSpecialImage to a full sized (all blue) canvas and checks that none
// of the inactive (green) region leaked out.
static const int kSmallerSize = 10;
static const int kPad = 3;
static const int kFullSize = kSmallerSize + 2 * kPad;
// Create a bitmap with red in the center and green around it
static SkBitmap create_bm() {
SkBitmap bm;
bm.allocN32Pixels(kFullSize, kFullSize, true);
SkCanvas temp(bm);
temp.clear(SK_ColorGREEN);
SkPaint p;
p.setColor(SK_ColorRED);
p.setAntiAlias(false);
temp.drawRect(SkRect::MakeXYWH(SkIntToScalar(kPad), SkIntToScalar(kPad),
SkIntToScalar(kSmallerSize), SkIntToScalar(kSmallerSize)),
p);
return bm;
}
// Basic test of the SkSpecialImage public API (e.g., peekTexture, peekPixels & draw)
static void test_image(SkSpecialImage* img, skiatest::Reporter* reporter,
bool peekPixelsSucceeds, bool peekTextureSucceeds,
int offset, int size) {
const SkIRect subset = TestingSpecialImageAccess::Subset(img);
REPORTER_ASSERT(reporter, offset == subset.left());
REPORTER_ASSERT(reporter, offset == subset.top());
REPORTER_ASSERT(reporter, kSmallerSize == subset.width());
REPORTER_ASSERT(reporter, kSmallerSize == subset.height());
//--------------
REPORTER_ASSERT(reporter, peekTextureSucceeds == !!TestingSpecialImageAccess::PeekTexture(img));
//--------------
SkPixmap pixmap;
REPORTER_ASSERT(reporter, peekPixelsSucceeds ==
!!TestingSpecialImageAccess::PeekPixels(img, &pixmap));
if (peekPixelsSucceeds) {
REPORTER_ASSERT(reporter, size == pixmap.width());
REPORTER_ASSERT(reporter, size == pixmap.height());
}
//--------------
SkImageInfo info = SkImageInfo::MakeN32(kFullSize, kFullSize, kOpaque_SkAlphaType);
SkAutoTUnref<SkSpecialSurface> surf(img->newSurface(info));
SkCanvas* canvas = surf->getCanvas();
canvas->clear(SK_ColorBLUE);
img->draw(canvas, SkIntToScalar(kPad), SkIntToScalar(kPad), nullptr);
SkBitmap bm;
bm.allocN32Pixels(kFullSize, kFullSize, true);
bool result = canvas->readPixels(bm.info(), bm.getPixels(), bm.rowBytes(), 0, 0);
SkASSERT_RELEASE(result);
// Only the center (red) portion should've been drawn into the canvas
REPORTER_ASSERT(reporter, SK_ColorBLUE == bm.getColor(kPad-1, kPad-1));
REPORTER_ASSERT(reporter, SK_ColorRED == bm.getColor(kPad, kPad));
REPORTER_ASSERT(reporter, SK_ColorRED == bm.getColor(kSmallerSize+kPad-1,
kSmallerSize+kPad-1));
REPORTER_ASSERT(reporter, SK_ColorBLUE == bm.getColor(kSmallerSize+kPad,
kSmallerSize+kPad));
}
DEF_TEST(SpecialImage_Raster, reporter) {
SkBitmap bm = create_bm();
SkAutoTUnref<SkSpecialImage> fullSImage(SkSpecialImage::NewFromRaster(
nullptr,
SkIRect::MakeWH(kFullSize, kFullSize),
bm));
const SkIRect& subset = SkIRect::MakeXYWH(kPad, kPad, kSmallerSize, kSmallerSize);
{
SkAutoTUnref<SkSpecialImage> subSImg1(SkSpecialImage::NewFromRaster(nullptr, subset, bm));
test_image(subSImg1, reporter, true, false, kPad, kFullSize);
}
{
SkAutoTUnref<SkSpecialImage> subSImg2(fullSImage->extractSubset(subset));
test_image(subSImg2, reporter, true, false, 0, kSmallerSize);
}
}
DEF_TEST(SpecialImage_Image, reporter) {
SkBitmap bm = create_bm();
SkAutoTUnref<SkImage> fullImage(SkImage::NewFromBitmap(bm));
SkAutoTUnref<SkSpecialImage> fullSImage(SkSpecialImage::NewFromImage(
nullptr,
SkIRect::MakeWH(kFullSize, kFullSize),
fullImage));
const SkIRect& subset = SkIRect::MakeXYWH(kPad, kPad, kSmallerSize, kSmallerSize);
{
SkAutoTUnref<SkSpecialImage> subSImg1(SkSpecialImage::NewFromImage(nullptr,
subset,
fullImage));
test_image(subSImg1, reporter, true, false, kPad, kFullSize);
}
{
SkAutoTUnref<SkSpecialImage> subSImg2(fullSImage->extractSubset(subset));
test_image(subSImg2, reporter, true, false, 0, kSmallerSize);
}
}
DEF_TEST(SpecialImage_Pixmap, reporter) {
SkAutoPixmapStorage pixmap;
const SkImageInfo info = SkImageInfo::MakeN32(kFullSize, kFullSize, kOpaque_SkAlphaType);
pixmap.alloc(info);
pixmap.erase(SK_ColorGREEN);
const SkIRect& subset = SkIRect::MakeXYWH(kPad, kPad, kSmallerSize, kSmallerSize);
pixmap.erase(SK_ColorRED, subset);
{
// The SkAutoPixmapStorage keeps hold of the memory
SkAutoTUnref<SkSpecialImage> img(SkSpecialImage::NewFromPixmap(nullptr, subset, pixmap,
nullptr, nullptr));
test_image(img, reporter, true, false, kPad, kFullSize);
}
{
// The image takes ownership of the memory
SkAutoTUnref<SkSpecialImage> img(SkSpecialImage::NewFromPixmap(
nullptr, subset, pixmap,
[] (void* addr, void*) -> void { sk_free(addr); },
nullptr));
pixmap.release();
test_image(img, reporter, true, false, kPad, kFullSize);
}
}
#if SK_SUPPORT_GPU
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(SpecialImage_Gpu, reporter, context) {
SkBitmap bm = create_bm();
GrSurfaceDesc desc;
desc.fConfig = kSkia8888_GrPixelConfig;
desc.fFlags = kNone_GrSurfaceFlags;
desc.fWidth = kFullSize;
desc.fHeight = kFullSize;
SkAutoTUnref<GrTexture> texture(context->textureProvider()->createTexture(desc, SkBudgeted::kNo,
bm.getPixels(), 0));
if (!texture) {
return;
}
SkAutoTUnref<SkSpecialImage> fullSImg(SkSpecialImage::NewFromGpu(
nullptr,
SkIRect::MakeWH(kFullSize, kFullSize),
kNeedNewImageUniqueID_SpecialImage,
texture));
const SkIRect& subset = SkIRect::MakeXYWH(kPad, kPad, kSmallerSize, kSmallerSize);
{
SkAutoTUnref<SkSpecialImage> subSImg1(SkSpecialImage::NewFromGpu(
nullptr, subset,
kNeedNewImageUniqueID_SpecialImage,
texture));
test_image(subSImg1, reporter, false, true, kPad, kFullSize);
}
{
SkAutoTUnref<SkSpecialImage> subSImg2(fullSImg->extractSubset(subset));
test_image(subSImg2, reporter, false, true, kPad, kFullSize);
}
}
#endif
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