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skia2/dm/DMSrcSink.cpp
Robert Phillips a479f96daf Get ViaDDL working with Vulkan 
Change-Id: Iab5ab689529227d2c8a6dbea89e555b73622a99c
Reviewed-on: https://skia-review.googlesource.com/118989
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
2018-04-11 11:20:02 +00:00

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/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "DMSrcSink.h"
#include <cmath>
#include <functional>
#include "../src/jumper/SkJumper.h"
#include "Resources.h"
#include "SkAndroidCodec.h"
#include "SkAutoMalloc.h"
#include "SkBase64.h"
#include "SkCodec.h"
#include "SkCodecImageGenerator.h"
#include "SkColorSpace.h"
#include "SkColorSpaceXform.h"
#include "SkColorSpaceXformCanvas.h"
#include "SkColorSpace_XYZ.h"
#include "SkCommonFlags.h"
#include "SkCommonFlagsGpu.h"
#include "SkData.h"
#include "SkDebugCanvas.h"
#include "SkDeferredDisplayListRecorder.h"
#include "SkDocument.h"
#include "SkExecutor.h"
#include "SkImageGenerator.h"
#include "SkImageGeneratorCG.h"
#include "SkImageGeneratorWIC.h"
#include "SkImageInfoPriv.h"
#include "SkLiteDL.h"
#include "SkLiteRecorder.h"
#include "SkMallocPixelRef.h"
#include "SkMultiPictureDocumentPriv.h"
#include "SkMultiPictureDraw.h"
#include "SkNullCanvas.h"
#include "SkOSFile.h"
#include "SkOSPath.h"
#include "SkOpts.h"
#include "SkPictureCommon.h"
#include "SkPictureData.h"
#include "SkPictureRecorder.h"
#include "SkPipe.h"
#include "SkPngEncoder.h"
#include "SkRandom.h"
#include "SkRecordDraw.h"
#include "SkRecorder.h"
#include "SkStream.h"
#include "SkSurfaceCharacterization.h"
#include "SkSwizzler.h"
#include "SkTLogic.h"
#include "SkTaskGroup.h"
#include "SkThreadedBMPDevice.h"
#if defined(SK_BUILD_FOR_WIN)
#include "SkAutoCoInitialize.h"
#include "SkHRESULT.h"
#include "SkTScopedComPtr.h"
#include <XpsObjectModel.h>
#endif
#if !defined(SK_BUILD_FOR_GOOGLE3)
#include "Skottie.h"
#endif
#if defined(SK_XML)
#include "SkSVGCanvas.h"
#include "SkSVGDOM.h"
#include "SkXMLWriter.h"
#endif
#if SK_SUPPORT_GPU
#include "GrBackendSurface.h"
#include "GrContextPriv.h"
#include "GrGpu.h"
#endif
DEFINE_bool(multiPage, false, "For document-type backends, render the source"
" into multiple pages");
DEFINE_bool(RAW_threading, true, "Allow RAW decodes to run on multiple threads?");
using sk_gpu_test::GrContextFactory;
namespace DM {
GMSrc::GMSrc(skiagm::GMRegistry::Factory factory) : fFactory(factory) {}
Error GMSrc::draw(SkCanvas* canvas) const {
std::unique_ptr<skiagm::GM> gm(fFactory(nullptr));
gm->draw(canvas);
return "";
}
SkISize GMSrc::size() const {
std::unique_ptr<skiagm::GM> gm(fFactory(nullptr));
return gm->getISize();
}
Name GMSrc::name() const {
std::unique_ptr<skiagm::GM> gm(fFactory(nullptr));
return gm->getName();
}
void GMSrc::modifyGrContextOptions(GrContextOptions* options) const {
std::unique_ptr<skiagm::GM> gm(fFactory(nullptr));
gm->modifyGrContextOptions(options);
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
BRDSrc::BRDSrc(Path path, Mode mode, CodecSrc::DstColorType dstColorType, uint32_t sampleSize)
: fPath(path)
, fMode(mode)
, fDstColorType(dstColorType)
, fSampleSize(sampleSize)
{}
bool BRDSrc::veto(SinkFlags flags) const {
// No need to test to non-raster or indirect backends.
return flags.type != SinkFlags::kRaster
|| flags.approach != SinkFlags::kDirect;
}
static SkBitmapRegionDecoder* create_brd(Path path) {
sk_sp<SkData> encoded(SkData::MakeFromFileName(path.c_str()));
if (!encoded) {
return nullptr;
}
return SkBitmapRegionDecoder::Create(encoded, SkBitmapRegionDecoder::kAndroidCodec_Strategy);
}
static inline void alpha8_to_gray8(SkBitmap* bitmap) {
// Android requires kGray8 bitmaps to be tagged as kAlpha8. Here we convert
// them back to kGray8 so our test framework can draw them correctly.
if (kAlpha_8_SkColorType == bitmap->info().colorType()) {
SkImageInfo newInfo = bitmap->info().makeColorType(kGray_8_SkColorType)
.makeAlphaType(kOpaque_SkAlphaType);
*const_cast<SkImageInfo*>(&bitmap->info()) = newInfo;
}
}
Error BRDSrc::draw(SkCanvas* canvas) const {
if (canvas->imageInfo().colorSpace() &&
kRGBA_F16_SkColorType != canvas->imageInfo().colorType()) {
// SkAndroidCodec uses legacy premultiplication and blending. Therefore, we only
// run these tests on legacy canvases.
// We allow an exception for F16, since Android uses F16.
return Error::Nonfatal("Skip testing to color correct canvas.");
}
SkColorType colorType = canvas->imageInfo().colorType();
if (kRGB_565_SkColorType == colorType &&
CodecSrc::kGetFromCanvas_DstColorType != fDstColorType) {
return Error::Nonfatal("Testing non-565 to 565 is uninteresting.");
}
switch (fDstColorType) {
case CodecSrc::kGetFromCanvas_DstColorType:
break;
case CodecSrc::kGrayscale_Always_DstColorType:
colorType = kGray_8_SkColorType;
break;
default:
SkASSERT(false);
break;
}
std::unique_ptr<SkBitmapRegionDecoder> brd(create_brd(fPath));
if (nullptr == brd.get()) {
return Error::Nonfatal(SkStringPrintf("Could not create brd for %s.", fPath.c_str()));
}
auto recommendedCT = brd->computeOutputColorType(colorType);
if (kRGB_565_SkColorType == colorType && recommendedCT != colorType) {
return Error::Nonfatal("Skip decoding non-opaque to 565.");
}
colorType = recommendedCT;
auto colorSpace = brd->computeOutputColorSpace(colorType, nullptr);
const uint32_t width = brd->width();
const uint32_t height = brd->height();
// Visually inspecting very small output images is not necessary.
if ((width / fSampleSize <= 10 || height / fSampleSize <= 10) && 1 != fSampleSize) {
return Error::Nonfatal("Scaling very small images is uninteresting.");
}
switch (fMode) {
case kFullImage_Mode: {
SkBitmap bitmap;
if (!brd->decodeRegion(&bitmap, nullptr, SkIRect::MakeXYWH(0, 0, width, height),
fSampleSize, colorType, false, colorSpace)) {
return "Cannot decode (full) region.";
}
alpha8_to_gray8(&bitmap);
canvas->drawBitmap(bitmap, 0, 0);
return "";
}
case kDivisor_Mode: {
const uint32_t divisor = 2;
if (width < divisor || height < divisor) {
return Error::Nonfatal("Divisor is larger than image dimension.");
}
// Use a border to test subsets that extend outside the image.
// We will not allow the border to be larger than the image dimensions. Allowing
// these large borders causes off by one errors that indicate a problem with the
// test suite, not a problem with the implementation.
const uint32_t maxBorder = SkTMin(width, height) / (fSampleSize * divisor);
const uint32_t scaledBorder = SkTMin(5u, maxBorder);
const uint32_t unscaledBorder = scaledBorder * fSampleSize;
// We may need to clear the canvas to avoid uninitialized memory.
// Assume we are scaling a 780x780 image with sampleSize = 8.
// The output image should be 97x97.
// Each subset will be 390x390.
// Each scaled subset be 48x48.
// Four scaled subsets will only fill a 96x96 image.
// The bottom row and last column will not be touched.
// This is an unfortunate result of our rounding rules when scaling.
// Maybe we need to consider testing scaled subsets without trying to
// combine them to match the full scaled image? Or maybe this is the
// best we can do?
canvas->clear(0);
for (uint32_t x = 0; x < divisor; x++) {
for (uint32_t y = 0; y < divisor; y++) {
// Calculate the subset dimensions
uint32_t subsetWidth = width / divisor;
uint32_t subsetHeight = height / divisor;
const int left = x * subsetWidth;
const int top = y * subsetHeight;
// Increase the size of the last subset in each row or column, when the
// divisor does not divide evenly into the image dimensions
subsetWidth += (x + 1 == divisor) ? (width % divisor) : 0;
subsetHeight += (y + 1 == divisor) ? (height % divisor) : 0;
// Increase the size of the subset in order to have a border on each side
const int decodeLeft = left - unscaledBorder;
const int decodeTop = top - unscaledBorder;
const uint32_t decodeWidth = subsetWidth + unscaledBorder * 2;
const uint32_t decodeHeight = subsetHeight + unscaledBorder * 2;
SkBitmap bitmap;
if (!brd->decodeRegion(&bitmap, nullptr, SkIRect::MakeXYWH(decodeLeft,
decodeTop, decodeWidth, decodeHeight), fSampleSize, colorType, false,
colorSpace)) {
return "Cannot decode region.";
}
alpha8_to_gray8(&bitmap);
canvas->drawBitmapRect(bitmap,
SkRect::MakeXYWH((SkScalar) scaledBorder, (SkScalar) scaledBorder,
(SkScalar) (subsetWidth / fSampleSize),
(SkScalar) (subsetHeight / fSampleSize)),
SkRect::MakeXYWH((SkScalar) (left / fSampleSize),
(SkScalar) (top / fSampleSize),
(SkScalar) (subsetWidth / fSampleSize),
(SkScalar) (subsetHeight / fSampleSize)),
nullptr);
}
}
return "";
}
default:
SkASSERT(false);
return "Error: Should not be reached.";
}
}
SkISize BRDSrc::size() const {
std::unique_ptr<SkBitmapRegionDecoder> brd(create_brd(fPath));
if (brd) {
return {SkTMax(1, brd->width() / (int)fSampleSize),
SkTMax(1, brd->height() / (int)fSampleSize)};
}
return {0, 0};
}
static SkString get_scaled_name(const Path& path, float scale) {
return SkStringPrintf("%s_%.3f", SkOSPath::Basename(path.c_str()).c_str(), scale);
}
Name BRDSrc::name() const {
// We will replicate the names used by CodecSrc so that images can
// be compared in Gold.
if (1 == fSampleSize) {
return SkOSPath::Basename(fPath.c_str());
}
return get_scaled_name(fPath, 1.0f / (float) fSampleSize);
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
static bool serial_from_path_name(const SkString& path) {
if (!FLAGS_RAW_threading) {
static const char* const exts[] = {
"arw", "cr2", "dng", "nef", "nrw", "orf", "raf", "rw2", "pef", "srw",
"ARW", "CR2", "DNG", "NEF", "NRW", "ORF", "RAF", "RW2", "PEF", "SRW",
};
const char* actualExt = strrchr(path.c_str(), '.');
if (actualExt) {
actualExt++;
for (auto* ext : exts) {
if (0 == strcmp(ext, actualExt)) {
return true;
}
}
}
}
return false;
}
CodecSrc::CodecSrc(Path path, Mode mode, DstColorType dstColorType, SkAlphaType dstAlphaType,
float scale)
: fPath(path)
, fMode(mode)
, fDstColorType(dstColorType)
, fDstAlphaType(dstAlphaType)
, fScale(scale)
, fRunSerially(serial_from_path_name(path))
{}
bool CodecSrc::veto(SinkFlags flags) const {
// Test to direct raster backends (8888 and 565).
return flags.type != SinkFlags::kRaster || flags.approach != SinkFlags::kDirect;
}
// Allows us to test decodes to non-native 8888.
static void swap_rb_if_necessary(SkBitmap& bitmap, CodecSrc::DstColorType dstColorType) {
if (CodecSrc::kNonNative8888_Always_DstColorType != dstColorType) {
return;
}
for (int y = 0; y < bitmap.height(); y++) {
uint32_t* row = (uint32_t*) bitmap.getAddr(0, y);
SkOpts::RGBA_to_BGRA(row, row, bitmap.width());
}
}
// FIXME: Currently we cannot draw unpremultiplied sources. skbug.com/3338 and skbug.com/3339.
// This allows us to still test unpremultiplied decodes.
static void premultiply_if_necessary(SkBitmap& bitmap) {
if (kUnpremul_SkAlphaType != bitmap.alphaType()) {
return;
}
switch (bitmap.colorType()) {
case kRGBA_F16_SkColorType: {
SkJumper_MemoryCtx ctx = { bitmap.getAddr(0,0), bitmap.rowBytesAsPixels() };
SkRasterPipeline_<256> p;
p.append(SkRasterPipeline::load_f16, &ctx);
p.append(SkRasterPipeline::premul);
p.append(SkRasterPipeline::store_f16, &ctx);
p.run(0,0, bitmap.width(), bitmap.height());
}
break;
case kN32_SkColorType:
for (int y = 0; y < bitmap.height(); y++) {
uint32_t* row = (uint32_t*) bitmap.getAddr(0, y);
SkOpts::RGBA_to_rgbA(row, row, bitmap.width());
}
break;
default:
// No need to premultiply kGray or k565 outputs.
break;
}
// In the kIndex_8 case, the canvas won't even try to draw unless we mark the
// bitmap as kPremul.
bitmap.setAlphaType(kPremul_SkAlphaType);
}
static bool get_decode_info(SkImageInfo* decodeInfo, SkColorType canvasColorType,
CodecSrc::DstColorType dstColorType, SkAlphaType dstAlphaType) {
switch (dstColorType) {
case CodecSrc::kGrayscale_Always_DstColorType:
if (kRGB_565_SkColorType == canvasColorType) {
return false;
}
*decodeInfo = decodeInfo->makeColorType(kGray_8_SkColorType);
break;
case CodecSrc::kNonNative8888_Always_DstColorType:
if (kRGB_565_SkColorType == canvasColorType
|| kRGBA_F16_SkColorType == canvasColorType) {
return false;
}
#ifdef SK_PMCOLOR_IS_RGBA
*decodeInfo = decodeInfo->makeColorType(kBGRA_8888_SkColorType);
#else
*decodeInfo = decodeInfo->makeColorType(kRGBA_8888_SkColorType);
#endif
break;
default:
if (kRGB_565_SkColorType == canvasColorType &&
kOpaque_SkAlphaType != decodeInfo->alphaType()) {
return false;
}
if (kRGBA_F16_SkColorType == canvasColorType) {
sk_sp<SkColorSpace> linearSpace = decodeInfo->colorSpace()->makeLinearGamma();
*decodeInfo = decodeInfo->makeColorSpace(std::move(linearSpace));
}
*decodeInfo = decodeInfo->makeColorType(canvasColorType);
break;
}
*decodeInfo = decodeInfo->makeAlphaType(dstAlphaType);
return true;
}
static void draw_to_canvas(SkCanvas* canvas, const SkImageInfo& info, void* pixels, size_t rowBytes,
CodecSrc::DstColorType dstColorType,
SkScalar left = 0, SkScalar top = 0) {
SkBitmap bitmap;
bitmap.installPixels(info, pixels, rowBytes);
premultiply_if_necessary(bitmap);
swap_rb_if_necessary(bitmap, dstColorType);
canvas->drawBitmap(bitmap, left, top);
}
// For codec srcs, we want the "draw" step to be a memcpy. Any interesting color space or
// color format conversions should be performed by the codec. Sometimes the output of the
// decode will be in an interesting color space. On our srgb and f16 backends, we need to
// "pretend" that the color space is standard sRGB to avoid triggering color conversion
// at draw time.
static void set_bitmap_color_space(SkImageInfo* info) {
if (kRGBA_F16_SkColorType == info->colorType()) {
*info = info->makeColorSpace(SkColorSpace::MakeSRGBLinear());
} else {
*info = info->makeColorSpace(SkColorSpace::MakeSRGB());
}
}
Error CodecSrc::draw(SkCanvas* canvas) const {
sk_sp<SkData> encoded(SkData::MakeFromFileName(fPath.c_str()));
if (!encoded) {
return SkStringPrintf("Couldn't read %s.", fPath.c_str());
}
std::unique_ptr<SkCodec> codec(SkCodec::MakeFromData(encoded));
if (nullptr == codec.get()) {
return SkStringPrintf("Couldn't create codec for %s.", fPath.c_str());
}
SkImageInfo decodeInfo = codec->getInfo();
if (!get_decode_info(&decodeInfo, canvas->imageInfo().colorType(), fDstColorType,
fDstAlphaType)) {
return Error::Nonfatal("Skipping uninteresting test.");
}
// Try to scale the image if it is desired
SkISize size = codec->getScaledDimensions(fScale);
if (size == decodeInfo.dimensions() && 1.0f != fScale) {
return Error::Nonfatal("Test without scaling is uninteresting.");
}
// Visually inspecting very small output images is not necessary. We will
// cover these cases in unit testing.
if ((size.width() <= 10 || size.height() <= 10) && 1.0f != fScale) {
return Error::Nonfatal("Scaling very small images is uninteresting.");
}
decodeInfo = decodeInfo.makeWH(size.width(), size.height());
const int bpp = decodeInfo.bytesPerPixel();
const size_t rowBytes = size.width() * bpp;
const size_t safeSize = decodeInfo.computeByteSize(rowBytes);
SkAutoMalloc pixels(safeSize);
SkCodec::Options options;
options.fPremulBehavior = canvas->imageInfo().colorSpace() ?
SkTransferFunctionBehavior::kRespect : SkTransferFunctionBehavior::kIgnore;
if (kCodecZeroInit_Mode == fMode) {
memset(pixels.get(), 0, size.height() * rowBytes);
options.fZeroInitialized = SkCodec::kYes_ZeroInitialized;
}
SkImageInfo bitmapInfo = decodeInfo;
set_bitmap_color_space(&bitmapInfo);
if (kRGBA_8888_SkColorType == decodeInfo.colorType() ||
kBGRA_8888_SkColorType == decodeInfo.colorType()) {
bitmapInfo = bitmapInfo.makeColorType(kN32_SkColorType);
}
switch (fMode) {
case kAnimated_Mode: {
std::vector<SkCodec::FrameInfo> frameInfos = codec->getFrameInfo();
if (frameInfos.size() <= 1) {
return SkStringPrintf("%s is not an animated image.", fPath.c_str());
}
// As in CodecSrc::size(), compute a roughly square grid to draw the frames
// into. "factor" is the number of frames to draw on one row. There will be
// up to "factor" rows as well.
const float root = sqrt((float) frameInfos.size());
const int factor = sk_float_ceil2int(root);
// Used to cache a frame that future frames will depend on.
SkAutoMalloc priorFramePixels;
int cachedFrame = SkCodec::kNone;
for (int i = 0; static_cast<size_t>(i) < frameInfos.size(); i++) {
options.fFrameIndex = i;
// Check for a prior frame
const int reqFrame = frameInfos[i].fRequiredFrame;
if (reqFrame != SkCodec::kNone && reqFrame == cachedFrame
&& priorFramePixels.get()) {
// Copy into pixels
memcpy(pixels.get(), priorFramePixels.get(), safeSize);
options.fPriorFrame = reqFrame;
} else {
options.fPriorFrame = SkCodec::kNone;
}
SkCodec::Result result = codec->getPixels(decodeInfo, pixels.get(),
rowBytes, &options);
if (SkCodec::kInvalidInput == result && i > 0) {
// Some of our test images have truncated later frames. Treat that
// the same as incomplete.
result = SkCodec::kIncompleteInput;
}
switch (result) {
case SkCodec::kSuccess:
case SkCodec::kErrorInInput:
case SkCodec::kIncompleteInput: {
// If the next frame depends on this one, store it in priorFrame.
// It is possible that we may discard a frame that future frames depend on,
// but the codec will simply redecode the discarded frame.
// Do this before calling draw_to_canvas, which premultiplies in place. If
// we're decoding to unpremul, we want to pass the unmodified frame to the
// codec for decoding the next frame.
if (static_cast<size_t>(i+1) < frameInfos.size()
&& frameInfos[i+1].fRequiredFrame == i) {
memcpy(priorFramePixels.reset(safeSize), pixels.get(), safeSize);
cachedFrame = i;
}
SkAutoCanvasRestore acr(canvas, true);
const int xTranslate = (i % factor) * decodeInfo.width();
const int yTranslate = (i / factor) * decodeInfo.height();
canvas->translate(SkIntToScalar(xTranslate), SkIntToScalar(yTranslate));
draw_to_canvas(canvas, bitmapInfo, pixels.get(), rowBytes, fDstColorType);
if (result != SkCodec::kSuccess) {
return "";
}
break;
}
case SkCodec::kInvalidConversion:
if (i > 0 && (decodeInfo.colorType() == kRGB_565_SkColorType)) {
return Error::Nonfatal(SkStringPrintf(
"Cannot decode frame %i to 565 (%s).", i, fPath.c_str()));
}
// Fall through.
default:
return SkStringPrintf("Couldn't getPixels for frame %i in %s.",
i, fPath.c_str());
}
}
break;
}
case kCodecZeroInit_Mode:
case kCodec_Mode: {
switch (codec->getPixels(decodeInfo, pixels.get(), rowBytes, &options)) {
case SkCodec::kSuccess:
// We consider these to be valid, since we should still decode what is
// available.
case SkCodec::kErrorInInput:
case SkCodec::kIncompleteInput:
break;
default:
// Everything else is considered a failure.
return SkStringPrintf("Couldn't getPixels %s.", fPath.c_str());
}
draw_to_canvas(canvas, bitmapInfo, pixels.get(), rowBytes, fDstColorType);
break;
}
case kScanline_Mode: {
void* dst = pixels.get();
uint32_t height = decodeInfo.height();
const bool useIncremental = [this]() {
auto exts = { "png", "PNG", "gif", "GIF" };
for (auto ext : exts) {
if (fPath.endsWith(ext)) {
return true;
}
}
return false;
}();
// ico may use the old scanline method or the new one, depending on whether it
// internally holds a bmp or a png.
const bool ico = fPath.endsWith("ico");
bool useOldScanlineMethod = !useIncremental && !ico;
if (useIncremental || ico) {
if (SkCodec::kSuccess == codec->startIncrementalDecode(decodeInfo, dst,
rowBytes, &options)) {
int rowsDecoded;
auto result = codec->incrementalDecode(&rowsDecoded);
if (SkCodec::kIncompleteInput == result || SkCodec::kErrorInInput == result) {
codec->fillIncompleteImage(decodeInfo, dst, rowBytes,
SkCodec::kNo_ZeroInitialized, height,
rowsDecoded);
}
} else {
if (useIncremental) {
// Error: These should support incremental decode.
return "Could not start incremental decode";
}
// Otherwise, this is an ICO. Since incremental failed, it must contain a BMP,
// which should work via startScanlineDecode
useOldScanlineMethod = true;
}
}
if (useOldScanlineMethod) {
if (SkCodec::kSuccess != codec->startScanlineDecode(decodeInfo)) {
return "Could not start scanline decoder";
}
// We do not need to check the return value. On an incomplete
// image, memory will be filled with a default value.
codec->getScanlines(dst, height, rowBytes);
}
draw_to_canvas(canvas, bitmapInfo, dst, rowBytes, fDstColorType);
break;
}
case kStripe_Mode: {
const int height = decodeInfo.height();
// This value is chosen arbitrarily. We exercise more cases by choosing a value that
// does not align with image blocks.
const int stripeHeight = 37;
const int numStripes = (height + stripeHeight - 1) / stripeHeight;
void* dst = pixels.get();
// Decode odd stripes
if (SkCodec::kSuccess != codec->startScanlineDecode(decodeInfo, &options)) {
return "Could not start scanline decoder";
}
// This mode was designed to test the new skip scanlines API in libjpeg-turbo.
// Jpegs have kTopDown_SkScanlineOrder, and at this time, it is not interesting
// to run this test for image types that do not have this scanline ordering.
// We only run this on Jpeg, which is always kTopDown.
SkASSERT(SkCodec::kTopDown_SkScanlineOrder == codec->getScanlineOrder());
for (int i = 0; i < numStripes; i += 2) {
// Skip a stripe
const int linesToSkip = SkTMin(stripeHeight, height - i * stripeHeight);
codec->skipScanlines(linesToSkip);
// Read a stripe
const int startY = (i + 1) * stripeHeight;
const int linesToRead = SkTMin(stripeHeight, height - startY);
if (linesToRead > 0) {
codec->getScanlines(SkTAddOffset<void>(dst, rowBytes * startY), linesToRead,
rowBytes);
}
}
// Decode even stripes
const SkCodec::Result startResult = codec->startScanlineDecode(decodeInfo);
if (SkCodec::kSuccess != startResult) {
return "Failed to restart scanline decoder with same parameters.";
}
for (int i = 0; i < numStripes; i += 2) {
// Read a stripe
const int startY = i * stripeHeight;
const int linesToRead = SkTMin(stripeHeight, height - startY);
codec->getScanlines(SkTAddOffset<void>(dst, rowBytes * startY), linesToRead,
rowBytes);
// Skip a stripe
const int linesToSkip = SkTMin(stripeHeight, height - (i + 1) * stripeHeight);
if (linesToSkip > 0) {
codec->skipScanlines(linesToSkip);
}
}
draw_to_canvas(canvas, bitmapInfo, dst, rowBytes, fDstColorType);
break;
}
case kCroppedScanline_Mode: {
const int width = decodeInfo.width();
const int height = decodeInfo.height();
// This value is chosen because, as we move across the image, it will sometimes
// align with the jpeg block sizes and it will sometimes not. This allows us
// to test interestingly different code paths in the implementation.
const int tileSize = 36;
SkIRect subset;
for (int x = 0; x < width; x += tileSize) {
subset = SkIRect::MakeXYWH(x, 0, SkTMin(tileSize, width - x), height);
options.fSubset = &subset;
if (SkCodec::kSuccess != codec->startScanlineDecode(decodeInfo, &options)) {
return "Could not start scanline decoder.";
}
codec->getScanlines(SkTAddOffset<void>(pixels.get(), x * bpp), height, rowBytes);
}
draw_to_canvas(canvas, bitmapInfo, pixels.get(), rowBytes, fDstColorType);
break;
}
case kSubset_Mode: {
// Arbitrarily choose a divisor.
int divisor = 2;
// Total width/height of the image.
const int W = codec->getInfo().width();
const int H = codec->getInfo().height();
if (divisor > W || divisor > H) {
return Error::Nonfatal(SkStringPrintf("Cannot codec subset: divisor %d is too big "
"for %s with dimensions (%d x %d)", divisor,
fPath.c_str(), W, H));
}
// subset dimensions
// SkWebpCodec, the only one that supports subsets, requires even top/left boundaries.
const int w = SkAlign2(W / divisor);
const int h = SkAlign2(H / divisor);
SkIRect subset;
options.fSubset = &subset;
SkBitmap subsetBm;
// We will reuse pixel memory from bitmap.
void* dst = pixels.get();
// Keep track of left and top (for drawing subsetBm into canvas). We could use
// fScale * x and fScale * y, but we want integers such that the next subset will start
// where the last one ended. So we'll add decodeInfo.width() and height().
int left = 0;
for (int x = 0; x < W; x += w) {
int top = 0;
for (int y = 0; y < H; y+= h) {
// Do not make the subset go off the edge of the image.
const int preScaleW = SkTMin(w, W - x);
const int preScaleH = SkTMin(h, H - y);
subset.setXYWH(x, y, preScaleW, preScaleH);
// And scale
// FIXME: Should we have a version of getScaledDimensions that takes a subset
// into account?
const int scaledW = SkTMax(1, SkScalarRoundToInt(preScaleW * fScale));
const int scaledH = SkTMax(1, SkScalarRoundToInt(preScaleH * fScale));
decodeInfo = decodeInfo.makeWH(scaledW, scaledH);
SkImageInfo subsetBitmapInfo = bitmapInfo.makeWH(scaledW, scaledH);
size_t subsetRowBytes = subsetBitmapInfo.minRowBytes();
const SkCodec::Result result = codec->getPixels(decodeInfo, dst, subsetRowBytes,
&options);
switch (result) {
case SkCodec::kSuccess:
case SkCodec::kErrorInInput:
case SkCodec::kIncompleteInput:
break;
default:
return SkStringPrintf("subset codec failed to decode (%d, %d, %d, %d) "
"from %s with dimensions (%d x %d)\t error %d",
x, y, decodeInfo.width(), decodeInfo.height(),
fPath.c_str(), W, H, result);
}
draw_to_canvas(canvas, subsetBitmapInfo, dst, subsetRowBytes, fDstColorType,
SkIntToScalar(left), SkIntToScalar(top));
// translate by the scaled height.
top += decodeInfo.height();
}
// translate by the scaled width.
left += decodeInfo.width();
}
return "";
}
default:
SkASSERT(false);
return "Invalid fMode";
}
return "";
}
SkISize CodecSrc::size() const {
sk_sp<SkData> encoded(SkData::MakeFromFileName(fPath.c_str()));
std::unique_ptr<SkCodec> codec(SkCodec::MakeFromData(encoded));
if (nullptr == codec) {
return {0, 0};
}
auto imageSize = codec->getScaledDimensions(fScale);
if (fMode == kAnimated_Mode) {
// We'll draw one of each frame, so make it big enough to hold them all
// in a grid. The grid will be roughly square, with "factor" frames per
// row and up to "factor" rows.
const size_t count = codec->getFrameInfo().size();
const float root = sqrt((float) count);
const int factor = sk_float_ceil2int(root);
imageSize.fWidth = imageSize.fWidth * factor;
imageSize.fHeight = imageSize.fHeight * sk_float_ceil2int((float) count / (float) factor);
}
return imageSize;
}
Name CodecSrc::name() const {
if (1.0f == fScale) {
Name name = SkOSPath::Basename(fPath.c_str());
if (fMode == kAnimated_Mode) {
name.append("_animated");
}
return name;
}
SkASSERT(fMode != kAnimated_Mode);
return get_scaled_name(fPath, fScale);
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
AndroidCodecSrc::AndroidCodecSrc(Path path, CodecSrc::DstColorType dstColorType,
SkAlphaType dstAlphaType, int sampleSize)
: fPath(path)
, fDstColorType(dstColorType)
, fDstAlphaType(dstAlphaType)
, fSampleSize(sampleSize)
, fRunSerially(serial_from_path_name(path))
{}
bool AndroidCodecSrc::veto(SinkFlags flags) const {
// No need to test decoding to non-raster or indirect backend.
return flags.type != SinkFlags::kRaster
|| flags.approach != SinkFlags::kDirect;
}
Error AndroidCodecSrc::draw(SkCanvas* canvas) const {
if (canvas->imageInfo().colorSpace() &&
kRGBA_F16_SkColorType != canvas->imageInfo().colorType()) {
// SkAndroidCodec uses legacy premultiplication and blending. Therefore, we only
// run these tests on legacy canvases.
// We allow an exception for F16, since Android uses F16.
return Error::Nonfatal("Skip testing to color correct canvas.");
}
sk_sp<SkData> encoded(SkData::MakeFromFileName(fPath.c_str()));
if (!encoded) {
return SkStringPrintf("Couldn't read %s.", fPath.c_str());
}
std::unique_ptr<SkAndroidCodec> codec(SkAndroidCodec::MakeFromData(encoded));
if (nullptr == codec) {
return SkStringPrintf("Couldn't create android codec for %s.", fPath.c_str());
}
SkImageInfo decodeInfo = codec->getInfo();
if (!get_decode_info(&decodeInfo, canvas->imageInfo().colorType(), fDstColorType,
fDstAlphaType)) {
return Error::Nonfatal("Skipping uninteresting test.");
}
// Scale the image if it is desired.
SkISize size = codec->getSampledDimensions(fSampleSize);
// Visually inspecting very small output images is not necessary. We will
// cover these cases in unit testing.
if ((size.width() <= 10 || size.height() <= 10) && 1 != fSampleSize) {
return Error::Nonfatal("Scaling very small images is uninteresting.");
}
decodeInfo = decodeInfo.makeWH(size.width(), size.height());
int bpp = decodeInfo.bytesPerPixel();
size_t rowBytes = size.width() * bpp;
SkAutoMalloc pixels(size.height() * rowBytes);
SkBitmap bitmap;
SkImageInfo bitmapInfo = decodeInfo;
set_bitmap_color_space(&bitmapInfo);
if (kRGBA_8888_SkColorType == decodeInfo.colorType() ||
kBGRA_8888_SkColorType == decodeInfo.colorType()) {
bitmapInfo = bitmapInfo.makeColorType(kN32_SkColorType);
}
// Create options for the codec.
SkAndroidCodec::AndroidOptions options;
options.fSampleSize = fSampleSize;
switch (codec->getAndroidPixels(decodeInfo, pixels.get(), rowBytes, &options)) {
case SkCodec::kSuccess:
case SkCodec::kErrorInInput:
case SkCodec::kIncompleteInput:
break;
default:
return SkStringPrintf("Couldn't getPixels %s.", fPath.c_str());
}
draw_to_canvas(canvas, bitmapInfo, pixels.get(), rowBytes, fDstColorType);
return "";
}
SkISize AndroidCodecSrc::size() const {
sk_sp<SkData> encoded(SkData::MakeFromFileName(fPath.c_str()));
std::unique_ptr<SkAndroidCodec> codec(SkAndroidCodec::MakeFromData(encoded));
if (nullptr == codec) {
return {0, 0};
}
return codec->getSampledDimensions(fSampleSize);
}
Name AndroidCodecSrc::name() const {
// We will replicate the names used by CodecSrc so that images can
// be compared in Gold.
if (1 == fSampleSize) {
return SkOSPath::Basename(fPath.c_str());
}
return get_scaled_name(fPath, 1.0f / (float) fSampleSize);
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
ImageGenSrc::ImageGenSrc(Path path, Mode mode, SkAlphaType alphaType, bool isGpu)
: fPath(path)
, fMode(mode)
, fDstAlphaType(alphaType)
, fIsGpu(isGpu)
, fRunSerially(serial_from_path_name(path))
{}
bool ImageGenSrc::veto(SinkFlags flags) const {
if (fIsGpu) {
// MSAA runs tend to run out of memory and tests the same code paths as regular gpu configs.
return flags.type != SinkFlags::kGPU || flags.approach != SinkFlags::kDirect ||
flags.multisampled == SinkFlags::kMultisampled;
}
return flags.type != SinkFlags::kRaster || flags.approach != SinkFlags::kDirect;
}
Error ImageGenSrc::draw(SkCanvas* canvas) const {
if (kRGB_565_SkColorType == canvas->imageInfo().colorType()) {
return Error::Nonfatal("Uninteresting to test image generator to 565.");
}
sk_sp<SkData> encoded(SkData::MakeFromFileName(fPath.c_str()));
if (!encoded) {
return SkStringPrintf("Couldn't read %s.", fPath.c_str());
}
#if defined(SK_BUILD_FOR_WIN)
// Initialize COM in order to test with WIC.
SkAutoCoInitialize com;
if (!com.succeeded()) {
return "Could not initialize COM.";
}
#endif
std::unique_ptr<SkImageGenerator> gen(nullptr);
switch (fMode) {
case kCodec_Mode:
gen = SkCodecImageGenerator::MakeFromEncodedCodec(encoded);
if (!gen) {
return "Could not create codec image generator.";
}
break;
case kPlatform_Mode: {
#if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
gen = SkImageGeneratorCG::MakeFromEncodedCG(encoded);
#elif defined(SK_BUILD_FOR_WIN)
gen.reset(SkImageGeneratorWIC::NewFromEncodedWIC(encoded.get()));
#endif
if (!gen) {
return "Could not create platform image generator.";
}
break;
}
default:
SkASSERT(false);
return "Invalid image generator mode";
}
// Test deferred decoding path on GPU
if (fIsGpu) {
sk_sp<SkImage> image(SkImage::MakeFromGenerator(std::move(gen), nullptr));
if (!image) {
return "Could not create image from codec image generator.";
}
canvas->drawImage(image, 0, 0);
return "";
}
// Test various color and alpha types on CPU
SkImageInfo decodeInfo = gen->getInfo().makeAlphaType(fDstAlphaType);
SkImageGenerator::Options options;
options.fBehavior = canvas->imageInfo().colorSpace() ?
SkTransferFunctionBehavior::kRespect : SkTransferFunctionBehavior::kIgnore;
int bpp = decodeInfo.bytesPerPixel();
size_t rowBytes = decodeInfo.width() * bpp;
SkAutoMalloc pixels(decodeInfo.height() * rowBytes);
if (!gen->getPixels(decodeInfo, pixels.get(), rowBytes, &options)) {
SkString err =
SkStringPrintf("Image generator could not getPixels() for %s\n", fPath.c_str());
#if defined(SK_BUILD_FOR_WIN)
if (kPlatform_Mode == fMode) {
// Do not issue a fatal error for WIC flakiness.
return Error::Nonfatal(err);
}
#endif
return err;
}
set_bitmap_color_space(&decodeInfo);
draw_to_canvas(canvas, decodeInfo, pixels.get(), rowBytes,
CodecSrc::kGetFromCanvas_DstColorType);
return "";
}
SkISize ImageGenSrc::size() const {
sk_sp<SkData> encoded(SkData::MakeFromFileName(fPath.c_str()));
std::unique_ptr<SkCodec> codec(SkCodec::MakeFromData(encoded));
if (nullptr == codec) {
return {0, 0};
}
return codec->getInfo().dimensions();
}
Name ImageGenSrc::name() const {
return SkOSPath::Basename(fPath.c_str());
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
ColorCodecSrc::ColorCodecSrc(Path path, Mode mode, SkColorType colorType)
: fPath(path)
, fMode(mode)
, fColorType(colorType)
{}
bool ColorCodecSrc::veto(SinkFlags flags) const {
// Test to direct raster backends (8888 and 565).
return flags.type != SinkFlags::kRaster || flags.approach != SinkFlags::kDirect;
}
void clamp_if_necessary(const SkBitmap& bitmap, SkColorType dstCT) {
if (kRGBA_F16_SkColorType != bitmap.colorType() || kRGBA_F16_SkColorType == dstCT) {
// No need to clamp if the dst is F16. We will clamp when we encode to PNG.
return;
}
SkJumper_MemoryCtx ptr = { bitmap.getAddr(0,0), bitmap.rowBytesAsPixels() };
SkRasterPipeline_<256> p;
p.append(SkRasterPipeline::load_f16, &ptr);
p.append(SkRasterPipeline::clamp_0);
if (kPremul_SkAlphaType == bitmap.alphaType()) {
p.append(SkRasterPipeline::clamp_a);
} else {
p.append(SkRasterPipeline::clamp_1);
}
p.append(SkRasterPipeline::store_f16, &ptr);
p.run(0,0, bitmap.width(), bitmap.height());
}
Error ColorCodecSrc::draw(SkCanvas* canvas) const {
if (kRGB_565_SkColorType == canvas->imageInfo().colorType()) {
return Error::Nonfatal("No need to test color correction to 565 backend.");
}
bool runInLegacyMode = kBaseline_Mode == fMode;
if (runInLegacyMode && canvas->imageInfo().colorSpace()) {
return Error::Nonfatal("Skipping tests that are only interesting in legacy mode.");
} else if (!runInLegacyMode && !canvas->imageInfo().colorSpace()) {
return Error::Nonfatal("Skipping tests that are only interesting in srgb mode.");
}
sk_sp<SkData> encoded(SkData::MakeFromFileName(fPath.c_str()));
if (!encoded) {
return SkStringPrintf("Couldn't read %s.", fPath.c_str());
}
std::unique_ptr<SkCodec> codec(SkCodec::MakeFromData(encoded));
if (nullptr == codec) {
return SkStringPrintf("Couldn't create codec for %s.", fPath.c_str());
}
// Load the dst ICC profile. This particular dst is fairly similar to Adobe RGB.
sk_sp<SkData> dstData = GetResourceAsData("icc_profiles/HP_ZR30w.icc");
if (!dstData) {
return "Cannot read monitor profile. Is the resource path set correctly?";
}
sk_sp<SkColorSpace> dstSpace = nullptr;
if (kDst_sRGB_Mode == fMode) {
dstSpace = SkColorSpace::MakeSRGB();
} else if (kDst_HPZR30w_Mode == fMode) {
dstSpace = SkColorSpace::MakeICC(dstData->data(), dstData->size());
}
SkImageInfo decodeInfo = codec->getInfo().makeColorType(fColorType).makeColorSpace(dstSpace);
if (kUnpremul_SkAlphaType == decodeInfo.alphaType()) {
decodeInfo = decodeInfo.makeAlphaType(kPremul_SkAlphaType);
}
if (kRGBA_F16_SkColorType == fColorType) {
decodeInfo = decodeInfo.makeColorSpace(decodeInfo.colorSpace()->makeLinearGamma());
}
SkImageInfo bitmapInfo = decodeInfo;
set_bitmap_color_space(&bitmapInfo);
if (kRGBA_8888_SkColorType == decodeInfo.colorType() ||
kBGRA_8888_SkColorType == decodeInfo.colorType())
{
bitmapInfo = bitmapInfo.makeColorType(kN32_SkColorType);
}
SkBitmap bitmap;
if (!bitmap.tryAllocPixels(bitmapInfo)) {
return SkStringPrintf("Image(%s) is too large (%d x %d)", fPath.c_str(),
bitmapInfo.width(), bitmapInfo.height());
}
size_t rowBytes = bitmap.rowBytes();
SkCodec::Result r = codec->getPixels(decodeInfo, bitmap.getPixels(), rowBytes);
switch (r) {
case SkCodec::kSuccess:
case SkCodec::kErrorInInput:
case SkCodec::kIncompleteInput:
break;
default:
return SkStringPrintf("Couldn't getPixels %s. Error code %d", fPath.c_str(), r);
}
switch (fMode) {
case kBaseline_Mode:
case kDst_sRGB_Mode:
case kDst_HPZR30w_Mode:
// We do not support drawing unclamped F16.
clamp_if_necessary(bitmap, canvas->imageInfo().colorType());
canvas->drawBitmap(bitmap, 0, 0);
break;
default:
SkASSERT(false);
return "Invalid fMode";
}
return "";
}
SkISize ColorCodecSrc::size() const {
sk_sp<SkData> encoded(SkData::MakeFromFileName(fPath.c_str()));
std::unique_ptr<SkCodec> codec(SkCodec::MakeFromData(encoded));
if (nullptr == codec) {
return {0, 0};
}
return {codec->getInfo().width(), codec->getInfo().height()};
}
Name ColorCodecSrc::name() const {
return SkOSPath::Basename(fPath.c_str());
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
SKPSrc::SKPSrc(Path path) : fPath(path) { }
static sk_sp<SkPicture> read_skp(const char* path, const SkDeserialProcs* procs = nullptr) {
std::unique_ptr<SkStream> stream = SkStream::MakeFromFile(path);
if (!stream) {
return nullptr;
}
sk_sp<SkPicture> pic(SkPicture::MakeFromStream(stream.get(), procs));
if (!pic) {
return nullptr;
}
stream = nullptr; // Might as well drop this when we're done with it.
return pic;
}
Error SKPSrc::draw(SkCanvas* canvas) const {
sk_sp<SkPicture> pic = read_skp(fPath.c_str());
if (!pic) {
return SkStringPrintf("Couldn't read %s.", fPath.c_str());
}
canvas->clipRect(SkRect::MakeWH(FLAGS_skpViewportSize, FLAGS_skpViewportSize));
canvas->drawPicture(pic);
return "";
}
static SkRect get_cull_rect_for_skp(const char* path) {
std::unique_ptr<SkStream> stream = SkStream::MakeFromFile(path);
if (!stream) {
return SkRect::MakeEmpty();
}
SkPictInfo info;
if (!SkPicture_StreamIsSKP(stream.get(), &info)) {
return SkRect::MakeEmpty();
}
return info.fCullRect;
}
SkISize SKPSrc::size() const {
SkRect viewport = get_cull_rect_for_skp(fPath.c_str());
if (!viewport.intersect((SkRect::MakeWH(FLAGS_skpViewportSize, FLAGS_skpViewportSize)))) {
return {0, 0};
}
return viewport.roundOut().size();
}
Name SKPSrc::name() const { return SkOSPath::Basename(fPath.c_str()); }
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
#if !defined(SK_BUILD_FOR_GOOGLE3)
SkottieSrc::SkottieSrc(Path path)
: fName(SkOSPath::Basename(path.c_str())) {
fAnimation = skottie::Animation::MakeFromFile(path.c_str());
if (!fAnimation) {
return;
}
// Fit kTileCount x kTileCount frames to a 1000x1000 film strip.
static constexpr SkScalar kTargetSize = 1000;
fTileSize = SkSize::Make(kTargetSize / kTileCount, kTargetSize / kTileCount).toCeil();
}
Error SkottieSrc::draw(SkCanvas* canvas) const {
if (!fAnimation) {
return SkStringPrintf("Unable to parse file: %s", fName.c_str());
}
canvas->drawColor(SK_ColorWHITE);
const auto ip = fAnimation->inPoint() * 1000 / fAnimation->frameRate(),
op = fAnimation->outPoint() * 1000 / fAnimation->frameRate(),
fr = (op - ip) / (kTileCount * kTileCount - 1);
// Shuffled order to exercise non-linear frame progression.
static constexpr int frames[] = { 4, 0, 3, 1, 2 };
static_assert(SK_ARRAY_COUNT(frames) == kTileCount, "");
for (int i = 0; i < kTileCount; ++i) {
const SkScalar y = frames[i] * fTileSize.height();
for (int j = 0; j < kTileCount; ++j) {
const SkScalar x = frames[j] * fTileSize.width();
SkRect dest = SkRect::MakeXYWH(x, y, fTileSize.width(), fTileSize.height());
const auto t = fr * (frames[i] * kTileCount + frames[j]);
{
SkAutoCanvasRestore acr(canvas, true);
canvas->clipRect(dest, true);
canvas->concat(SkMatrix::MakeRectToRect(SkRect::MakeSize(fAnimation->size()),
dest,
SkMatrix::kCenter_ScaleToFit));
fAnimation->animationTick(t);
fAnimation->render(canvas);
}
}
}
return "";
}
SkISize SkottieSrc::size() const {
return SkISize::Make(kTileCount * fTileSize.width(),
kTileCount * fTileSize.height());
}
Name SkottieSrc::name() const { return fName; }
bool SkottieSrc::veto(SinkFlags flags) const {
// No need to test to non-(raster||gpu||vector) or indirect backends.
bool type_ok = flags.type == SinkFlags::kRaster
|| flags.type == SinkFlags::kGPU
|| flags.type == SinkFlags::kVector;
return !type_ok || flags.approach != SinkFlags::kDirect;
}
#endif
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
#if defined(SK_XML)
// Used when the image doesn't have an intrinsic size.
static const SkSize kDefaultSVGSize = {1000, 1000};
// Used to force-scale tiny fixed-size images.
static const SkSize kMinimumSVGSize = {128, 128};
SVGSrc::SVGSrc(Path path)
: fName(SkOSPath::Basename(path.c_str()))
, fScale(1) {
SkFILEStream stream(path.c_str());
if (!stream.isValid()) {
return;
}
fDom = SkSVGDOM::MakeFromStream(stream);
if (!fDom) {
return;
}
const SkSize& sz = fDom->containerSize();
if (sz.isEmpty()) {
// no intrinsic size
fDom->setContainerSize(kDefaultSVGSize);
} else {
fScale = SkTMax(1.f, SkTMax(kMinimumSVGSize.width() / sz.width(),
kMinimumSVGSize.height() / sz.height()));
}
}
Error SVGSrc::draw(SkCanvas* canvas) const {
if (!fDom) {
return SkStringPrintf("Unable to parse file: %s", fName.c_str());
}
SkAutoCanvasRestore acr(canvas, true);
canvas->scale(fScale, fScale);
fDom->render(canvas);
return "";
}
SkISize SVGSrc::size() const {
if (!fDom) {
return {0, 0};
}
return SkSize{fDom->containerSize().width() * fScale, fDom->containerSize().height() * fScale}
.toRound();
}
Name SVGSrc::name() const { return fName; }
bool SVGSrc::veto(SinkFlags flags) const {
// No need to test to non-(raster||gpu||vector) or indirect backends.
bool type_ok = flags.type == SinkFlags::kRaster
|| flags.type == SinkFlags::kGPU
|| flags.type == SinkFlags::kVector;
return !type_ok || flags.approach != SinkFlags::kDirect;
}
#endif // defined(SK_XML)
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
MSKPSrc::MSKPSrc(Path path) : fPath(path) {
std::unique_ptr<SkStreamAsset> stream = SkStream::MakeFromFile(fPath.c_str());
int count = SkMultiPictureDocumentReadPageCount(stream.get());
if (count > 0) {
fPages.reset(count);
(void)SkMultiPictureDocumentReadPageSizes(stream.get(), &fPages[0], fPages.count());
}
}
int MSKPSrc::pageCount() const { return fPages.count(); }
SkISize MSKPSrc::size() const { return this->size(0); }
SkISize MSKPSrc::size(int i) const {
return i >= 0 && i < fPages.count() ? fPages[i].fSize.toCeil() : SkISize{0, 0};
}
Error MSKPSrc::draw(SkCanvas* c) const { return this->draw(0, c); }
Error MSKPSrc::draw(int i, SkCanvas* canvas) const {
if (this->pageCount() == 0) {
return SkStringPrintf("Unable to parse MultiPictureDocument file: %s", fPath.c_str());
}
if (i >= fPages.count() || i < 0) {
return SkStringPrintf("MultiPictureDocument page number out of range: %d", i);
}
SkPicture* page = fPages[i].fPicture.get();
if (!page) {
std::unique_ptr<SkStreamAsset> stream = SkStream::MakeFromFile(fPath.c_str());
if (!stream) {
return SkStringPrintf("Unable to open file: %s", fPath.c_str());
}
if (!SkMultiPictureDocumentRead(stream.get(), &fPages[0], fPages.count())) {
return SkStringPrintf("SkMultiPictureDocument reader failed on page %d: %s", i,
fPath.c_str());
}
page = fPages[i].fPicture.get();
}
canvas->drawPicture(page);
return "";
}
Name MSKPSrc::name() const { return SkOSPath::Basename(fPath.c_str()); }
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
Error NullSink::draw(const Src& src, SkBitmap*, SkWStream*, SkString*) const {
return src.draw(SkMakeNullCanvas().get());
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
static bool encode_png_base64(const SkBitmap& bitmap, SkString* dst) {
SkPixmap pm;
if (!bitmap.peekPixels(&pm)) {
dst->set("peekPixels failed");
return false;
}
// We're going to embed this PNG in a data URI, so make it as small as possible
SkPngEncoder::Options options;
options.fFilterFlags = SkPngEncoder::FilterFlag::kAll;
options.fZLibLevel = 9;
options.fUnpremulBehavior = pm.colorSpace() ? SkTransferFunctionBehavior::kRespect
: SkTransferFunctionBehavior::kIgnore;
SkDynamicMemoryWStream wStream;
if (!SkPngEncoder::Encode(&wStream, pm, options)) {
dst->set("SkPngEncoder::Encode failed");
return false;
}
sk_sp<SkData> pngData = wStream.detachAsData();
size_t len = SkBase64::Encode(pngData->data(), pngData->size(), nullptr);
// The PNG can be almost arbitrarily large. We don't want to fill our logs with enormous URLs.
// Infra says these can be pretty big, as long as we're only outputting them on failure.
static const size_t kMaxBase64Length = 1024 * 1024;
if (len > kMaxBase64Length) {
dst->printf("Encoded image too large (%u bytes)", static_cast<uint32_t>(len));
return false;
}
dst->resize(len);
SkBase64::Encode(pngData->data(), pngData->size(), dst->writable_str());
return true;
}
static Error compare_bitmaps(const SkBitmap& reference, const SkBitmap& bitmap) {
// The dimensions are a property of the Src only, and so should be identical.
SkASSERT(reference.computeByteSize() == bitmap.computeByteSize());
if (reference.computeByteSize() != bitmap.computeByteSize()) {
return "Dimensions don't match reference";
}
// All SkBitmaps in DM are tight, so this comparison is easy.
if (0 != memcmp(reference.getPixels(), bitmap.getPixels(), reference.computeByteSize())) {
SkString encoded;
SkString errString("Pixels don't match reference");
if (encode_png_base64(reference, &encoded)) {
errString.append("\nExpected: data:image/png;base64,");
errString.append(encoded);
} else {
errString.append("\nExpected image failed to encode: ");
errString.append(encoded);
}
if (encode_png_base64(bitmap, &encoded)) {
errString.append("\nActual: data:image/png;base64,");
errString.append(encoded);
} else {
errString.append("\nActual image failed to encode: ");
errString.append(encoded);
}
return errString;
}
return "";
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
DEFINE_bool(gpuStats, false, "Append GPU stats to the log for each GPU task?");
GPUSink::GPUSink(GrContextFactory::ContextType ct,
GrContextFactory::ContextOverrides overrides,
SkCommandLineConfigGpu::SurfType surfType,
int samples,
bool diText,
SkColorType colorType,
SkAlphaType alphaType,
sk_sp<SkColorSpace> colorSpace,
bool threaded,
const GrContextOptions& grCtxOptions)
: fContextType(ct)
, fContextOverrides(overrides)
, fSurfType(surfType)
, fSampleCount(samples)
, fUseDIText(diText)
, fColorType(colorType)
, fAlphaType(alphaType)
, fColorSpace(std::move(colorSpace))
, fThreaded(threaded)
, fBaseContextOptions(grCtxOptions) {}
DEFINE_bool(drawOpClip, false, "Clip each GrDrawOp to its device bounds for testing.");
Error GPUSink::draw(const Src& src, SkBitmap* dst, SkWStream* dstStream, SkString* log) const {
return this->onDraw(src, dst, dstStream, log, fBaseContextOptions);
}
Error GPUSink::onDraw(const Src& src, SkBitmap* dst, SkWStream*, SkString* log,
const GrContextOptions& baseOptions) const {
GrContextOptions grOptions = baseOptions;
src.modifyGrContextOptions(&grOptions);
GrContextFactory factory(grOptions);
const SkISize size = src.size();
SkImageInfo info =
SkImageInfo::Make(size.width(), size.height(), fColorType, fAlphaType, fColorSpace);
sk_sp<SkSurface> surface;
#if SK_SUPPORT_GPU
GrContext* context = factory.getContextInfo(fContextType, fContextOverrides).grContext();
const int maxDimension = context->caps()->maxTextureSize();
if (maxDimension < SkTMax(size.width(), size.height())) {
return Error::Nonfatal("Src too large to create a texture.\n");
}
uint32_t flags = fUseDIText ? SkSurfaceProps::kUseDeviceIndependentFonts_Flag : 0;
SkSurfaceProps props(flags, SkSurfaceProps::kLegacyFontHost_InitType);
GrBackendTexture backendTexture;
GrBackendRenderTarget backendRT;
switch (fSurfType) {
case SkCommandLineConfigGpu::SurfType::kDefault:
surface = SkSurface::MakeRenderTarget(context, SkBudgeted::kNo, info, fSampleCount,
&props);
break;
case SkCommandLineConfigGpu::SurfType::kBackendTexture:
backendTexture = context->contextPriv().getGpu()->createTestingOnlyBackendTexture(
nullptr, info.width(), info.height(), info.colorType(), true, GrMipMapped::kNo);
surface = SkSurface::MakeFromBackendTexture(context, backendTexture,
kTopLeft_GrSurfaceOrigin, fSampleCount,
fColorType, info.refColorSpace(), &props);
break;
case SkCommandLineConfigGpu::SurfType::kBackendRenderTarget:
if (1 == fSampleCount) {
auto srgbEncoded = info.colorSpace() && info.colorSpace()->gammaCloseToSRGB()
? GrSRGBEncoded::kYes
: GrSRGBEncoded::kNo;
auto colorType = SkColorTypeToGrColorType(info.colorType());
backendRT = context->contextPriv().getGpu()->createTestingOnlyBackendRenderTarget(
info.width(), info.height(), colorType, srgbEncoded);
surface = SkSurface::MakeFromBackendRenderTarget(
context, backendRT, kBottomLeft_GrSurfaceOrigin, info.colorType(),
info.refColorSpace(), &props);
}
break;
}
#endif
if (!surface) {
return "Could not create a surface.";
}
if (FLAGS_preAbandonGpuContext) {
factory.abandonContexts();
}
SkCanvas* canvas = surface->getCanvas();
Error err = src.draw(canvas);
if (!err.isEmpty()) {
return err;
}
canvas->flush();
if (FLAGS_gpuStats) {
#if SK_SUPPORT_GPU
canvas->getGrContext()->contextPriv().dumpCacheStats(log);
canvas->getGrContext()->contextPriv().dumpGpuStats(log);
#endif
}
if (info.colorType() == kRGB_565_SkColorType || info.colorType() == kARGB_4444_SkColorType ||
info.colorType() == kRGB_888x_SkColorType) {
// We don't currently support readbacks into these formats on the GPU backend. Convert to
// 32 bit.
info = SkImageInfo::Make(size.width(), size.height(), kRGBA_8888_SkColorType,
kPremul_SkAlphaType, fColorSpace);
}
dst->allocPixels(info);
canvas->readPixels(*dst, 0, 0);
if (FLAGS_abandonGpuContext) {
factory.abandonContexts();
} else if (FLAGS_releaseAndAbandonGpuContext) {
factory.releaseResourcesAndAbandonContexts();
}
#if SK_SUPPORT_GPU
if (!context->contextPriv().abandoned()) {
surface.reset();
if (backendTexture.isValid()) {
context->contextPriv().getGpu()->deleteTestingOnlyBackendTexture(backendTexture);
}
if (backendRT.isValid()) {
context->contextPriv().getGpu()->deleteTestingOnlyBackendRenderTarget(backendRT);
}
}
#endif
return "";
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
GPUThreadTestingSink::GPUThreadTestingSink(GrContextFactory::ContextType ct,
GrContextFactory::ContextOverrides overrides,
SkCommandLineConfigGpu::SurfType surfType,
int samples,
bool diText,
SkColorType colorType,
SkAlphaType alphaType,
sk_sp<SkColorSpace> colorSpace,
bool threaded,
const GrContextOptions& grCtxOptions)
: INHERITED(ct, overrides, surfType, samples, diText, colorType, alphaType,
std::move(colorSpace), threaded, grCtxOptions)
#if SK_SUPPORT_GPU
, fExecutor(SkExecutor::MakeFIFOThreadPool(FLAGS_gpuThreads)) {
#else
, fExecutor(nullptr) {
#endif
SkASSERT(fExecutor);
}
Error GPUThreadTestingSink::draw(const Src& src, SkBitmap* dst, SkWStream* wStream,
SkString* log) const {
// Draw twice, once with worker threads, and once without. Verify that we get the same result.
// Also, force us to only use the software path renderer, so we really stress-test the threaded
// version of that code.
GrContextOptions contextOptions = this->baseContextOptions();
contextOptions.fGpuPathRenderers = GpuPathRenderers::kNone;
contextOptions.fExecutor = fExecutor.get();
Error err = this->onDraw(src, dst, wStream, log, contextOptions);
if (!err.isEmpty() || !dst) {
return err;
}
SkBitmap reference;
SkString refLog;
SkDynamicMemoryWStream refStream;
contextOptions.fExecutor = nullptr;
Error refErr = this->onDraw(src, &reference, &refStream, &refLog, contextOptions);
if (!refErr.isEmpty()) {
return refErr;
}
return compare_bitmaps(reference, *dst);
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
static Error draw_skdocument(const Src& src, SkDocument* doc, SkWStream* dst) {
if (src.size().isEmpty()) {
return "Source has empty dimensions";
}
SkASSERT(doc);
int pageCount = src.pageCount();
for (int i = 0; i < pageCount; ++i) {
int width = src.size(i).width(), height = src.size(i).height();
SkCanvas* canvas =
doc->beginPage(SkIntToScalar(width), SkIntToScalar(height));
if (!canvas) {
return "SkDocument::beginPage(w,h) returned nullptr";
}
Error err = src.draw(i, canvas);
if (!err.isEmpty()) {
return err;
}
doc->endPage();
}
doc->close();
dst->flush();
return "";
}
Error PDFSink::draw(const Src& src, SkBitmap*, SkWStream* dst, SkString*) const {
SkDocument::PDFMetadata metadata;
metadata.fTitle = src.name();
metadata.fSubject = "rendering correctness test";
metadata.fCreator = "Skia/DM";
metadata.fRasterDPI = fRasterDpi;
metadata.fPDFA = fPDFA;
sk_sp<SkDocument> doc = SkDocument::MakePDF(dst, metadata);
if (!doc) {
return "SkDocument::MakePDF() returned nullptr";
}
return draw_skdocument(src, doc.get(), dst);
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
XPSSink::XPSSink() {}
#ifdef SK_BUILD_FOR_WIN
static SkTScopedComPtr<IXpsOMObjectFactory> make_xps_factory() {
IXpsOMObjectFactory* factory;
HRN(CoCreateInstance(CLSID_XpsOMObjectFactory,
nullptr,
CLSCTX_INPROC_SERVER,
IID_PPV_ARGS(&factory)));
return SkTScopedComPtr<IXpsOMObjectFactory>(factory);
}
Error XPSSink::draw(const Src& src, SkBitmap*, SkWStream* dst, SkString*) const {
SkAutoCoInitialize com;
if (!com.succeeded()) {
return "Could not initialize COM.";
}
SkTScopedComPtr<IXpsOMObjectFactory> factory = make_xps_factory();
if (!factory) {
return "Failed to create XPS Factory.";
}
sk_sp<SkDocument> doc(SkDocument::MakeXPS(dst, factory.get()));
if (!doc) {
return "SkDocument::MakeXPS() returned nullptr";
}
return draw_skdocument(src, doc.get(), dst);
}
#else
Error XPSSink::draw(const Src& src, SkBitmap*, SkWStream* dst, SkString*) const {
return "XPS not supported on this platform.";
}
#endif
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
PipeSink::PipeSink() {}
Error PipeSink::draw(const Src& src, SkBitmap*, SkWStream* dst, SkString*) const {
return src.draw(SkPipeSerializer().beginWrite(SkRect::Make(src.size()), dst));
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
SKPSink::SKPSink() {}
Error SKPSink::draw(const Src& src, SkBitmap*, SkWStream* dst, SkString*) const {
SkSize size;
size = src.size();
SkPictureRecorder recorder;
Error err = src.draw(recorder.beginRecording(size.width(), size.height()));
if (!err.isEmpty()) {
return err;
}
recorder.finishRecordingAsPicture()->serialize(dst);
return "";
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
Error DebugSink::draw(const Src& src, SkBitmap*, SkWStream* dst, SkString*) const {
SkDebugCanvas debugCanvas(src.size().width(), src.size().height());
Error err = src.draw(&debugCanvas);
if (!err.isEmpty()) {
return err;
}
std::unique_ptr<SkCanvas> nullCanvas = SkMakeNullCanvas();
UrlDataManager dataManager(SkString("data"));
Json::Value json = debugCanvas.toJSON(
dataManager, debugCanvas.getSize(), nullCanvas.get());
std::string value = Json::StyledWriter().write(json);
return dst->write(value.c_str(), value.size()) ? "" : "SkWStream Error";
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
SVGSink::SVGSink(int pageIndex) : fPageIndex(pageIndex) {}
Error SVGSink::draw(const Src& src, SkBitmap*, SkWStream* dst, SkString*) const {
#if defined(SK_XML)
if (src.pageCount() > 1) {
int pageCount = src.pageCount();
if (fPageIndex > pageCount - 1) {
return Error(SkStringPrintf("Page index %d too high for document with only %d pages.",
fPageIndex, pageCount));
}
}
std::unique_ptr<SkXMLWriter> xmlWriter(new SkXMLStreamWriter(dst));
return src.draw(fPageIndex,
SkSVGCanvas::Make(SkRect::MakeWH(SkIntToScalar(src.size().width()),
SkIntToScalar(src.size().height())),
xmlWriter.get())
.get());
#else
(void)fPageIndex;
return Error("SVG sink is disabled.");
#endif // SK_XML
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
RasterSink::RasterSink(SkColorType colorType, sk_sp<SkColorSpace> colorSpace)
: fColorType(colorType)
, fColorSpace(std::move(colorSpace)) {}
void RasterSink::allocPixels(const Src& src, SkBitmap* dst) const {
const SkISize size = src.size();
// If there's an appropriate alpha type for this color type, use it, otherwise use premul.
SkAlphaType alphaType = kPremul_SkAlphaType;
(void)SkColorTypeValidateAlphaType(fColorType, alphaType, &alphaType);
dst->allocPixelsFlags(SkImageInfo::Make(size.width(), size.height(),
fColorType, alphaType, fColorSpace),
SkBitmap::kZeroPixels_AllocFlag);
}
Error RasterSink::draw(const Src& src, SkBitmap* dst, SkWStream*, SkString*) const {
this->allocPixels(src, dst);
SkCanvas canvas(*dst);
return src.draw(&canvas);
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
ThreadedSink::ThreadedSink(SkColorType colorType, sk_sp<SkColorSpace> colorSpace)
: RasterSink(colorType, colorSpace)
, fExecutor(SkExecutor::MakeFIFOThreadPool(FLAGS_backendThreads)) {
}
Error ThreadedSink::draw(const Src& src, SkBitmap* dst, SkWStream* stream, SkString* str) const {
this->allocPixels(src, dst);
std::unique_ptr<SkThreadedBMPDevice> device(new SkThreadedBMPDevice(
*dst, FLAGS_backendTiles, FLAGS_backendThreads, fExecutor.get()));
std::unique_ptr<SkCanvas> canvas(new SkCanvas(device.get()));
Error result = src.draw(canvas.get());
canvas->flush();
return result;
// ??? yuqian: why does the following give me segmentation fault while the above one works?
// The seg fault occurs right in the beginning of ThreadedSink::draw with invalid
// memory address (it would crash without even calling this->allocPixels).
// SkThreadedBMPDevice device(*dst, tileCnt, FLAGS_cpuThreads, fExecutor.get());
// SkCanvas canvas(&device);
// Error result = src.draw(&canvas);
// canvas.flush();
// return result;
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
// Handy for front-patching a Src. Do whatever up-front work you need, then call draw_to_canvas(),
// passing the Sink draw() arguments, a size, and a function draws into an SkCanvas.
// Several examples below.
template <typename Fn>
static Error draw_to_canvas(Sink* sink, SkBitmap* bitmap, SkWStream* stream, SkString* log,
SkISize size, const Fn& draw) {
class ProxySrc : public Src {
public:
ProxySrc(SkISize size, const Fn& draw) : fSize(size), fDraw(draw) {}
Error draw(SkCanvas* canvas) const override { return fDraw(canvas); }
Name name() const override { return "ProxySrc"; }
SkISize size() const override { return fSize; }
private:
SkISize fSize;
const Fn& fDraw;
};
return sink->draw(ProxySrc(size, draw), bitmap, stream, log);
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
DEFINE_bool(check, true, "If true, have most Via- modes fail if they affect the output.");
// Is *bitmap identical to what you get drawing src into sink?
static Error check_against_reference(const SkBitmap* bitmap, const Src& src, Sink* sink) {
// We can only check raster outputs.
// (Non-raster outputs like .pdf, .skp, .svg may differ but still draw identically.)
if (FLAGS_check && bitmap) {
SkBitmap reference;
SkString log;
SkDynamicMemoryWStream wStream;
Error err = sink->draw(src, &reference, &wStream, &log);
// If we can draw into this Sink via some pipeline, we should be able to draw directly.
SkASSERT(err.isEmpty());
if (!err.isEmpty()) {
return err;
}
return compare_bitmaps(reference, *bitmap);
}
return "";
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
static SkISize auto_compute_translate(SkMatrix* matrix, int srcW, int srcH) {
SkRect bounds = SkRect::MakeIWH(srcW, srcH);
matrix->mapRect(&bounds);
matrix->postTranslate(-bounds.x(), -bounds.y());
return {SkScalarRoundToInt(bounds.width()), SkScalarRoundToInt(bounds.height())};
}
ViaMatrix::ViaMatrix(SkMatrix matrix, Sink* sink) : Via(sink), fMatrix(matrix) {}
Error ViaMatrix::draw(const Src& src, SkBitmap* bitmap, SkWStream* stream, SkString* log) const {
SkMatrix matrix = fMatrix;
SkISize size = auto_compute_translate(&matrix, src.size().width(), src.size().height());
return draw_to_canvas(fSink.get(), bitmap, stream, log, size, [&](SkCanvas* canvas) {
canvas->concat(matrix);
return src.draw(canvas);
});
}
// Undoes any flip or 90 degree rotate without changing the scale of the bitmap.
// This should be pixel-preserving.
ViaUpright::ViaUpright(SkMatrix matrix, Sink* sink) : Via(sink), fMatrix(matrix) {}
Error ViaUpright::draw(const Src& src, SkBitmap* bitmap, SkWStream* stream, SkString* log) const {
Error err = fSink->draw(src, bitmap, stream, log);
if (!err.isEmpty()) {
return err;
}
SkMatrix inverse;
if (!fMatrix.rectStaysRect() || !fMatrix.invert(&inverse)) {
return "Cannot upright --matrix.";
}
SkMatrix upright = SkMatrix::I();
upright.setScaleX(SkScalarSignAsScalar(inverse.getScaleX()));
upright.setScaleY(SkScalarSignAsScalar(inverse.getScaleY()));
upright.setSkewX(SkScalarSignAsScalar(inverse.getSkewX()));
upright.setSkewY(SkScalarSignAsScalar(inverse.getSkewY()));
SkBitmap uprighted;
SkISize size = auto_compute_translate(&upright, bitmap->width(), bitmap->height());
uprighted.allocPixels(bitmap->info().makeWH(size.width(), size.height()));
SkCanvas canvas(uprighted);
canvas.concat(upright);
SkPaint paint;
paint.setBlendMode(SkBlendMode::kSrc);
canvas.drawBitmap(*bitmap, 0, 0, &paint);
*bitmap = uprighted;
return "";
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
Error ViaSerialization::draw(
const Src& src, SkBitmap* bitmap, SkWStream* stream, SkString* log) const {
// Record our Src into a picture.
auto size = src.size();
SkPictureRecorder recorder;
Error err = src.draw(recorder.beginRecording(SkIntToScalar(size.width()),
SkIntToScalar(size.height())));
if (!err.isEmpty()) {
return err;
}
sk_sp<SkPicture> pic(recorder.finishRecordingAsPicture());
// Serialize it and then deserialize it.
sk_sp<SkPicture> deserialized(SkPicture::MakeFromData(pic->serialize().get()));
err = draw_to_canvas(fSink.get(), bitmap, stream, log, size, [&](SkCanvas* canvas) {
canvas->drawPicture(deserialized);
return "";
});
if (!err.isEmpty()) {
return err;
}
return check_against_reference(bitmap, src, fSink.get());
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
ViaTiles::ViaTiles(int w, int h, SkBBHFactory* factory, Sink* sink)
: Via(sink)
, fW(w)
, fH(h)
, fFactory(factory) {}
Error ViaTiles::draw(const Src& src, SkBitmap* bitmap, SkWStream* stream, SkString* log) const {
auto size = src.size();
SkPictureRecorder recorder;
Error err = src.draw(recorder.beginRecording(SkIntToScalar(size.width()),
SkIntToScalar(size.height()),
fFactory.get()));
if (!err.isEmpty()) {
return err;
}
sk_sp<SkPicture> pic(recorder.finishRecordingAsPicture());
return draw_to_canvas(fSink.get(), bitmap, stream, log, src.size(), [&](SkCanvas* canvas) {
const int xTiles = (size.width() + fW - 1) / fW,
yTiles = (size.height() + fH - 1) / fH;
SkMultiPictureDraw mpd(xTiles*yTiles);
SkTArray<sk_sp<SkSurface>> surfaces;
// surfaces.setReserve(xTiles*yTiles);
SkImageInfo info = canvas->imageInfo().makeWH(fW, fH);
for (int j = 0; j < yTiles; j++) {
for (int i = 0; i < xTiles; i++) {
// This lets our ultimate Sink determine the best kind of surface.
// E.g., if it's a GpuSink, the surfaces and images are textures.
auto s = canvas->makeSurface(info);
if (!s) {
s = SkSurface::MakeRaster(info); // Some canvases can't create surfaces.
}
surfaces.push_back(s);
SkCanvas* c = s->getCanvas();
c->translate(SkIntToScalar(-i * fW),
SkIntToScalar(-j * fH)); // Line up the canvas with this tile.
mpd.add(c, pic.get());
}
}
mpd.draw();
for (int j = 0; j < yTiles; j++) {
for (int i = 0; i < xTiles; i++) {
sk_sp<SkImage> image(surfaces[i+xTiles*j]->makeImageSnapshot());
canvas->drawImage(image, SkIntToScalar(i*fW), SkIntToScalar(j*fH));
}
}
return "";
});
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
#if SK_SUPPORT_GPU
ViaDDL::ViaDDL(int numDivisions, Sink* sink)
: Via(sink)
, fNumDivisions(numDivisions) {
}
// This class consolidates tracking & extraction of the original image data from the sources,
// the upload of said data to the GPU and the fulfillment of promise images.
//
// The way this works is:
// the original skp is converted to SkData and all its image info is extracted into this
// class and only indices into this class are left in the SkData
// Prior to replaying in threads, all the images stored in this class are uploaded to the
// gpu and PromiseImageCallbackContexts are created for them
// Each thread reinflates the SkData into an SkPicture replacing all the indices w/
// promise images (all using the same GrBackendTexture and getting a ref to the
// appropriate PromiseImageCallbackContext) and then creates a DDL.
// This class is then reset - dropping all of its refs on the PromiseImageCallbackContexts
// Each done callback unrefs its PromiseImageCallbackContext so, once all the promise images
// are done the PromiseImageCallbackContext is freed and its GrBackendTexture removed
// from VRAM
//
class ViaDDL::PromiseImageHelper {
public:
// This class acts as a proxy for the single GrBackendTexture representing an image.
// Whenever a promise image is created for the image the promise image receives a ref to
// this object. Once all the promise images receive their done callbacks this object
// is deleted - removing the GrBackendTexture from VRAM.
// Note that while the DDLs are being created in the threads, the PromiseImageHelper holds
// a ref on all the PromiseImageCallbackContexts. However, once all the threads are done
// it drops all of its refs (via "reset").
class PromiseImageCallbackContext : public SkRefCnt {
public:
PromiseImageCallbackContext(GrContext* context) : fContext(context) {}
~PromiseImageCallbackContext() {
GrGpu* gpu = fContext->contextPriv().getGpu();
if (fBackendTexture.isValid()) {
gpu->deleteTestingOnlyBackendTexture(fBackendTexture);
}
}
void setBackendTexture(const GrBackendTexture& backendTexture) {
fBackendTexture = backendTexture;
}
const GrBackendTexture& backendTexture() const { return fBackendTexture; }
private:
GrContext* fContext;
GrBackendTexture fBackendTexture;
typedef SkRefCnt INHERITED;
};
// This is the information extracted into this class from the parsing of the skp file.
// Once it has all been uploaded to the GPU and distributed to the promise images, it
// is all dropped via "reset".
class PromiseImageInfo {
public:
int fIndex; // index in the 'fImageInfo' array
uint32_t fOriginalUniqueID; // original ID for deduping
SkBitmap fBitmap; // CPU-side cache of the contents
sk_sp<PromiseImageCallbackContext> fCallbackContext;
};
PromiseImageHelper() { }
void reset() { fImageInfo.reset(); }
bool isValidID(int id) const {
return id >= 0 && id < fImageInfo.count();
}
const PromiseImageInfo& getInfo(int id) const {
return fImageInfo[id];
}
// returns -1 on failure
int findOrDefineImage(SkImage* image) {
int preExistingID = this->findImage(image);
if (preExistingID >= 0) {
SkASSERT(this->isValidID(preExistingID));
return preExistingID;
}
int newID = this->addImage(image);
SkASSERT(this->isValidID(newID));
return newID;
}
void uploadAllToGPU(GrContext* context) {
GrGpu* gpu = context->contextPriv().getGpu();
SkASSERT(gpu);
for (int i = 0; i < fImageInfo.count(); ++i) {
sk_sp<PromiseImageCallbackContext> callbackContext(
new PromiseImageCallbackContext(context));
// DDL TODO: how can we tell if we need mipmapping!
callbackContext->setBackendTexture(gpu->createTestingOnlyBackendTexture(
fImageInfo[i].fBitmap.getPixels(),
fImageInfo[i].fBitmap.width(),
fImageInfo[i].fBitmap.height(),
fImageInfo[i].fBitmap.colorType(),
false, GrMipMapped::kNo));
// The GMs sometimes request too large an image
//SkAssertResult(callbackContext->backendTexture().isValid());
// The fImageInfo array gets the creation ref
fImageInfo[i].fCallbackContext = std::move(callbackContext);
}
}
static void PromiseImageFulfillProc(void* textureContext, GrBackendTexture* outTexture) {
auto callbackContext = static_cast<PromiseImageCallbackContext*>(textureContext);
SkASSERT(callbackContext->backendTexture().isValid());
*outTexture = callbackContext->backendTexture();
}
static void PromiseImageReleaseProc(void* textureContext) {
#ifdef SK_DEBUG
auto callbackContext = static_cast<PromiseImageCallbackContext*>(textureContext);
SkASSERT(callbackContext->backendTexture().isValid());
#endif
}
static void PromiseImageDoneProc(void* textureContext) {
auto callbackContext = static_cast<PromiseImageCallbackContext*>(textureContext);
callbackContext->unref();
}
private:
// returns -1 if not found
int findImage(SkImage* image) const {
for (int i = 0; i < fImageInfo.count(); ++i) {
if (fImageInfo[i].fOriginalUniqueID == image->uniqueID()) {
SkASSERT(fImageInfo[i].fIndex == i);
SkASSERT(this->isValidID(i) && this->isValidID(fImageInfo[i].fIndex));
return i;
}
}
return -1;
}
// returns -1 on failure
int addImage(SkImage* image) {
sk_sp<SkImage> rasterImage = image->makeRasterImage(); // force decoding of lazy images
SkImageInfo ii = SkImageInfo::Make(rasterImage->width(), rasterImage->height(),
rasterImage->colorType(), rasterImage->alphaType(),
rasterImage->refColorSpace());
SkBitmap bm;
bm.allocPixels(ii);
if (!rasterImage->readPixels(bm.pixmap(), 0, 0)) {
return -1;
}
bm.setImmutable();
PromiseImageInfo newImageInfo;
newImageInfo.fIndex = fImageInfo.count();
newImageInfo.fOriginalUniqueID = image->uniqueID();
newImageInfo.fBitmap = bm;
/* fCallbackContext is filled in by uploadAllToGPU */
fImageInfo.push_back(newImageInfo);
SkASSERT(newImageInfo.fIndex == fImageInfo.count()-1);
return fImageInfo.count()-1;
}
SkTArray<PromiseImageInfo> fImageInfo;
};
// TileData class encapsulates the information and behavior for a single tile/thread in
// a DDL rendering.
class ViaDDL::TileData {
public:
// Note: we could just pass in surface characterization
TileData(sk_sp<SkSurface> surf, const SkIRect& clip)
: fSurface(std::move(surf))
, fClip(clip) {
SkAssertResult(fSurface->characterize(&fCharacterization));
}
// This method operates in parallel
// In each thread we will reconvert the compressedPictureData into an SkPicture
// replacing each image-index with a promise image.
void preprocess(SkData* compressedPictureData, const PromiseImageHelper& helper) {
SkDeferredDisplayListRecorder recorder(fCharacterization);
// DDL TODO: the DDLRecorder's GrContext isn't initialized until getCanvas is called.
// Maybe set it up in the ctor?
SkCanvas* subCanvas = recorder.getCanvas();
sk_sp<SkPicture> reconstitutedPicture;
{
PerRecorderContext perRecorderContext { &recorder, &helper };
SkDeserialProcs procs;
procs.fImageCtx = (void*) &perRecorderContext;
procs.fImageProc = PromiseImageCreator;
reconstitutedPicture = SkPicture::MakeFromData(compressedPictureData, &procs);
if (!reconstitutedPicture) {
return;
}
}
subCanvas->clipRect(SkRect::MakeWH(fClip.width(), fClip.height()));
subCanvas->translate(-fClip.fLeft, -fClip.fTop);
// Note: in this use case we only render a picture to the deferred canvas
// but, more generally, clients will use arbitrary draw calls.
subCanvas->drawPicture(reconstitutedPicture);
fDisplayList = recorder.detach();
}
// This method operates serially and replays the recorded DDL into the tile surface.
void draw() {
fSurface->draw(fDisplayList.get());
}
// This method also operates serially and composes the results of replaying the DDL into
// the final destination surface.
void compose(SkCanvas* dst) {
sk_sp<SkImage> img = fSurface->makeImageSnapshot();
dst->save();
dst->clipRect(SkRect::Make(fClip));
dst->drawImage(std::move(img), fClip.fLeft, fClip.fTop);
dst->restore();
}
private:
// This stack-based context allows each thread to re-inflate the image indices into
// promise images while still using the same GrBackendTexture.
struct PerRecorderContext {
SkDeferredDisplayListRecorder* fRecorder;
const PromiseImageHelper* fHelper;
};
// This generates promise images to replace the indices in the compressed picture. This
// reconstitution is performed separately in each thread so we end up with multiple
// promise images referring to the same GrBackendTexture.
static sk_sp<SkImage> PromiseImageCreator(const void* rawData, size_t length, void* ctxIn) {
PerRecorderContext* perRecorderContext = static_cast<PerRecorderContext*>(ctxIn);
const PromiseImageHelper* helper = perRecorderContext->fHelper;
SkDeferredDisplayListRecorder* recorder = perRecorderContext->fRecorder;
SkASSERT(length == sizeof(int));
const int* indexPtr = static_cast<const int*>(rawData);
SkASSERT(helper->isValidID(*indexPtr));
const PromiseImageHelper::PromiseImageInfo& curImage = helper->getInfo(*indexPtr);
if (!curImage.fCallbackContext->backendTexture().isValid()) {
// We weren't able to make a backend texture for this SkImage
return nullptr;
}
SkASSERT(curImage.fIndex == *indexPtr);
GrBackendFormat backendFormat = curImage.fCallbackContext->backendTexture().format();
// Each DDL recorder gets its own ref on the promise callback context for the
// promise images it creates.
// DDL TODO: sort out mipmapping
sk_sp<SkImage> image = recorder->makePromiseTexture(
backendFormat,
curImage.fBitmap.width(),
curImage.fBitmap.height(),
GrMipMapped::kNo,
GrSurfaceOrigin::kTopLeft_GrSurfaceOrigin,
curImage.fBitmap.colorType(),
curImage.fBitmap.alphaType(),
curImage.fBitmap.refColorSpace(),
PromiseImageHelper::PromiseImageFulfillProc,
PromiseImageHelper::PromiseImageReleaseProc,
PromiseImageHelper::PromiseImageDoneProc,
(void*) SkSafeRef(curImage.fCallbackContext.get()));
SkASSERT(image);
return image;
}
sk_sp<SkSurface> fSurface;
SkIRect fClip; // in the device space of the dest canvas
std::unique_ptr<SkDeferredDisplayList> fDisplayList;
SkSurfaceCharacterization fCharacterization;
};
Error ViaDDL::draw(const Src& src, SkBitmap* bitmap, SkWStream* stream, SkString* log) const {
auto size = src.size();
SkPictureRecorder recorder;
Error err = src.draw(recorder.beginRecording(SkIntToScalar(size.width()),
SkIntToScalar(size.height())));
if (!err.isEmpty()) {
return err;
}
sk_sp<SkPicture> inputPicture(recorder.finishRecordingAsPicture());
// this is our ultimate final drawing area/rect
SkIRect viewport = SkIRect::MakeWH(size.fWidth, size.fHeight);
PromiseImageHelper helper;
sk_sp<SkData> compressedPictureData;
// Convert the SkPicture into SkData replacing all the SkImages with an index.
{
SkSerialProcs procs;
procs.fImageCtx = &helper;
procs.fImageProc = [](SkImage* image, void* ctx) -> sk_sp<SkData> {
auto helper = static_cast<PromiseImageHelper*>(ctx);
int id = helper->findOrDefineImage(image);
if (id >= 0) {
SkASSERT(helper->isValidID(id));
return SkData::MakeWithCopy(&id, sizeof(id));
}
return nullptr;
};
compressedPictureData = inputPicture->serialize(&procs);
if (!compressedPictureData) {
return SkStringPrintf("ViaDDL: Couldn't deflate SkPicture");
}
}
return draw_to_canvas(fSink.get(), bitmap, stream, log, size,
[&](SkCanvas* canvas) -> Error {
GrContext* context = canvas->getGrContext();
if (!context || !context->contextPriv().getGpu()) {
return SkStringPrintf("DDLs are GPU only");
}
// This is here bc this is the first point where we have access to the context
helper.uploadAllToGPU(context);
int xTileSize = viewport.width()/fNumDivisions;
int yTileSize = viewport.height()/fNumDivisions;
SkTArray<TileData> tileData;
tileData.reserve(fNumDivisions*fNumDivisions);
// First, create the destination tiles
for (int y = 0, yOff = 0; y < fNumDivisions; ++y, yOff += yTileSize) {
int ySize = (y < fNumDivisions-1) ? yTileSize : viewport.height()-yOff;
for (int x = 0, xOff = 0; x < fNumDivisions; ++x, xOff += xTileSize) {
int xSize = (x < fNumDivisions-1) ? xTileSize : viewport.width()-xOff;
SkIRect clip = SkIRect::MakeXYWH(xOff, yOff, xSize, ySize);
SkASSERT(viewport.contains(clip));
SkImageInfo tileII = SkImageInfo::MakeN32Premul(xSize, ySize);
tileData.push_back(TileData(canvas->makeSurface(tileII), clip));
}
}
// Second, run the cpu pre-processing in threads
SkTaskGroup().batch(tileData.count(), [&](int i) {
tileData[i].preprocess(compressedPictureData.get(), helper);
});
// This drops the helper's refs on all the promise images
helper.reset();
// Third, synchronously render the display lists into the dest tiles
// TODO: it would be cool to not wait until all the tiles are drawn to begin
// drawing to the GPU and composing to the final surface
for (int i = 0; i < tileData.count(); ++i) {
tileData[i].draw();
}
// Finally, compose the drawn tiles into the result
// Note: the separation between the tiles and the final composition better
// matches Chrome but costs us a copy
for (int i = 0; i < tileData.count(); ++i) {
tileData[i].compose(canvas);
}
context->flush();
return "";
});
}
#else
ViaDDL::ViaDDL(int numDivisions, Sink* sink) : Via(sink) { }
Error ViaDDL::draw(const Src& src, SkBitmap* bitmap, SkWStream* stream, SkString* log) const {
return "ViaDDL is GPU only";
}
#endif
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
Error ViaPicture::draw(const Src& src, SkBitmap* bitmap, SkWStream* stream, SkString* log) const {
auto size = src.size();
Error err = draw_to_canvas(fSink.get(), bitmap, stream, log, size, [&](SkCanvas* canvas) {
SkPictureRecorder recorder;
sk_sp<SkPicture> pic;
Error err = src.draw(recorder.beginRecording(SkIntToScalar(size.width()),
SkIntToScalar(size.height())));
if (!err.isEmpty()) {
return err;
}
pic = recorder.finishRecordingAsPicture();
canvas->drawPicture(pic);
return err;
});
if (!err.isEmpty()) {
return err;
}
return check_against_reference(bitmap, src, fSink.get());
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
Error ViaPipe::draw(const Src& src, SkBitmap* bitmap, SkWStream* stream, SkString* log) const {
auto size = src.size();
Error err = draw_to_canvas(fSink.get(), bitmap, stream, log, size, [&](SkCanvas* canvas) {
SkDynamicMemoryWStream tmpStream;
Error err = src.draw(SkPipeSerializer().beginWrite(SkRect::Make(size), &tmpStream));
if (!err.isEmpty()) {
return err;
}
sk_sp<SkData> data = tmpStream.detachAsData();
SkPipeDeserializer().playback(data->data(), data->size(), canvas);
return err;
});
if (!err.isEmpty()) {
return err;
}
return check_against_reference(bitmap, src, fSink.get());
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
#ifdef TEST_VIA_SVG
#include "SkXMLWriter.h"
#include "SkSVGCanvas.h"
#include "SkSVGDOM.h"
Error ViaSVG::draw(const Src& src, SkBitmap* bitmap, SkWStream* stream, SkString* log) const {
auto size = src.size();
return draw_to_canvas(fSink.get(), bitmap, stream, log, size, [&](SkCanvas* canvas) -> Error {
SkDynamicMemoryWStream wstream;
SkXMLStreamWriter writer(&wstream);
Error err = src.draw(SkSVGCanvas::Make(SkRect::Make(size), &writer).get());
if (!err.isEmpty()) {
return err;
}
std::unique_ptr<SkStream> rstream(wstream.detachAsStream());
auto dom = SkSVGDOM::MakeFromStream(*rstream);
if (dom) {
dom->setContainerSize(SkSize::Make(size));
dom->render(canvas);
}
return "";
});
}
#endif
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
Error ViaLite::draw(const Src& src, SkBitmap* bitmap, SkWStream* stream, SkString* log) const {
auto size = src.size();
SkIRect bounds = {0,0, size.width(), size.height()};
Error err = draw_to_canvas(fSink.get(), bitmap, stream, log, size, [&](SkCanvas* canvas) {
SkLiteDL dl;
SkLiteRecorder rec;
rec.reset(&dl, bounds);
Error err = src.draw(&rec);
if (!err.isEmpty()) {
return err;
}
dl.draw(canvas);
return err;
});
if (!err.isEmpty()) {
return err;
}
return check_against_reference(bitmap, src, fSink.get());
}
/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
ViaCSXform::ViaCSXform(Sink* sink, sk_sp<SkColorSpace> cs, bool colorSpin)
: Via(sink)
, fCS(std::move(cs))
, fColorSpin(colorSpin) {}
Error ViaCSXform::draw(const Src& src, SkBitmap* bitmap, SkWStream* stream, SkString* log) const {
return draw_to_canvas(fSink.get(), bitmap, stream, log, src.size(),
[&](SkCanvas* canvas) -> Error {
{
SkAutoCanvasRestore acr(canvas, true);
auto proxy = SkCreateColorSpaceXformCanvas(canvas, fCS);
Error err = src.draw(proxy.get());
if (!err.isEmpty()) {
return err;
}
}
// Undo the color spin, so we can look at the pixels in Gold.
if (fColorSpin) {
SkBitmap pixels;
pixels.allocPixels(canvas->imageInfo());
canvas->readPixels(pixels, 0, 0);
SkPaint rotateColors;
SkScalar matrix[20] = { 0, 0, 1, 0, 0, // B -> R
1, 0, 0, 0, 0, // R -> G
0, 1, 0, 0, 0, // G -> B
0, 0, 0, 1, 0 };
rotateColors.setBlendMode(SkBlendMode::kSrc);
rotateColors.setColorFilter(SkColorFilter::MakeMatrixFilterRowMajor255(matrix));
canvas->drawBitmap(pixels, 0, 0, &rotateColors);
}
return "";
});
}
} // namespace DM
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