skia2/tests/ImageIsOpaqueTest.cpp
brianosman fad98562d8 Prototype code that turns any/every flattenable into JSON
This makes inspecting things in SkDebugger far more useful - any filter
or other complex object on the paint is ultimately visible. You still
have to do some guess work to figure out what the fields actually mean,
but you can at least cross-reference with the code in flatten().

Screenshots:
Before: https://screenshot.googleplex.com/a6JM5HBBe6G.png
After : https://screenshot.googleplex.com/XQfr4YJ6mnH.png

Changes to public API are just removals and changes to make
some functions virtual.

TBR=reed@google.com

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1920423002

Review-Url: https://codereview.chromium.org/1920423002
2016-05-04 11:06:28 -07:00

82 lines
2.9 KiB
C++

/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkTypes.h"
#include "Test.h"
#if SK_SUPPORT_GPU
#include "GrContext.h"
#endif
#include "SkImage.h"
#include "SkSurface.h"
#include "SkReadBuffer.h"
#include "SkWriteBuffer.h"
static void test_flatten(skiatest::Reporter* reporter, const SkImageInfo& info) {
// just need a safe amount of storage, but ensure that it is 4-byte aligned.
int32_t storage[(sizeof(SkImageInfo)*2) / sizeof(int32_t)];
SkBinaryWriteBuffer wb(storage, sizeof(storage));
info.flatten(wb);
SkASSERT(wb.bytesWritten() < sizeof(storage));
SkReadBuffer rb(storage, wb.bytesWritten());
SkImageInfo info2;
// pick a noisy byte pattern, so we ensure that unflatten sets all of our fields
memset(&info2, 0xB8, sizeof(info2));
info2.unflatten(rb);
REPORTER_ASSERT(reporter, rb.offset() == wb.bytesWritten());
REPORTER_ASSERT(reporter, info == info2);
}
DEF_TEST(ImageInfo_flattening, reporter) {
for (int ct = 0; ct <= kLastEnum_SkColorType; ++ct) {
for (int at = 0; at <= kLastEnum_SkAlphaType; ++at) {
for (int pt = 0; pt <= kLastEnum_SkColorProfileType; ++pt) {
SkImageInfo info = SkImageInfo::Make(100, 200,
static_cast<SkColorType>(ct),
static_cast<SkAlphaType>(at),
static_cast<SkColorProfileType>(pt));
test_flatten(reporter, info);
}
}
}
}
static void check_isopaque(skiatest::Reporter* reporter, const sk_sp<SkSurface>& surface,
bool expectedOpaque) {
sk_sp<SkImage> image(surface->makeImageSnapshot());
REPORTER_ASSERT(reporter, image->isOpaque() == expectedOpaque);
}
DEF_TEST(ImageIsOpaqueTest, reporter) {
SkImageInfo infoTransparent = SkImageInfo::MakeN32Premul(5, 5);
auto surfaceTransparent(SkSurface::MakeRaster(infoTransparent));
check_isopaque(reporter, surfaceTransparent, false);
SkImageInfo infoOpaque = SkImageInfo::MakeN32(5, 5, kOpaque_SkAlphaType);
auto surfaceOpaque(SkSurface::MakeRaster(infoOpaque));
check_isopaque(reporter, surfaceOpaque, true);
}
#if SK_SUPPORT_GPU
DEF_GPUTEST_FOR_GL_RENDERING_CONTEXTS(ImageIsOpaqueTest_Gpu, reporter, ctxInfo) {
GrContext* context = ctxInfo.fGrContext;
SkImageInfo infoTransparent = SkImageInfo::MakeN32Premul(5, 5);
auto surfaceTransparent(SkSurface::MakeRenderTarget(context, SkBudgeted::kNo, infoTransparent));
check_isopaque(reporter, surfaceTransparent, false);
SkImageInfo infoOpaque = SkImageInfo::MakeN32(5, 5, kOpaque_SkAlphaType);
auto surfaceOpaque(SkSurface::MakeRenderTarget(context,SkBudgeted::kNo, infoOpaque));
check_isopaque(reporter, surfaceOpaque, true);
}
#endif