skia2/tools/PictureRenderer.cpp
scroggo 895c43b28b Replace EncodeBitmap with an interface.
Gives more flexibility to the caller to decide whether to use the
encoded data returned by refEncodedData().

Provides an implementation that supports the old version of
SkPicture::serialize().

TODO: Update Chrome, so we can remove SK_LEGACY_ENCODE_BITMAP entirely

BUG=skia:3190

Review URL: https://codereview.chromium.org/784643002
2014-12-11 10:53:58 -08:00

878 lines
30 KiB
C++

/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "PictureRenderer.h"
#include "picture_utils.h"
#include "SamplePipeControllers.h"
#include "SkBitmapHasher.h"
#include "SkCanvas.h"
#include "SkData.h"
#include "SkDevice.h"
#include "SkDiscardableMemoryPool.h"
#include "SkGPipe.h"
#if SK_SUPPORT_GPU
#include "gl/GrGLDefines.h"
#include "SkGpuDevice.h"
#endif
#include "SkGraphics.h"
#include "SkImageEncoder.h"
#include "SkMaskFilter.h"
#include "SkMatrix.h"
#include "SkMultiPictureDraw.h"
#include "SkOSFile.h"
#include "SkPicture.h"
#include "SkPictureRecorder.h"
#include "SkPictureUtils.h"
#include "SkPixelRef.h"
#include "SkPixelSerializer.h"
#include "SkScalar.h"
#include "SkStream.h"
#include "SkString.h"
#include "SkSurface.h"
#include "SkTemplates.h"
#include "SkTDArray.h"
#include "SkThreadUtils.h"
#include "SkTypes.h"
static inline SkScalar scalar_log2(SkScalar x) {
static const SkScalar log2_conversion_factor = SkScalarDiv(1, SkScalarLog(2));
return SkScalarLog(x) * log2_conversion_factor;
}
namespace sk_tools {
enum {
kDefaultTileWidth = 256,
kDefaultTileHeight = 256
};
void PictureRenderer::init(const SkPicture* pict,
const SkString* writePath,
const SkString* mismatchPath,
const SkString* inputFilename,
bool useChecksumBasedFilenames,
bool useMultiPictureDraw) {
this->CopyString(&fWritePath, writePath);
this->CopyString(&fMismatchPath, mismatchPath);
this->CopyString(&fInputFilename, inputFilename);
fUseChecksumBasedFilenames = useChecksumBasedFilenames;
fUseMultiPictureDraw = useMultiPictureDraw;
SkASSERT(NULL == fPicture);
SkASSERT(NULL == fCanvas.get());
if (fPicture || fCanvas.get()) {
return;
}
SkASSERT(pict != NULL);
if (NULL == pict) {
return;
}
fPicture.reset(pict)->ref();
fCanvas.reset(this->setupCanvas());
}
void PictureRenderer::CopyString(SkString* dest, const SkString* src) {
if (src) {
dest->set(*src);
} else {
dest->reset();
}
}
class FlagsDrawFilter : public SkDrawFilter {
public:
FlagsDrawFilter(PictureRenderer::DrawFilterFlags* flags) :
fFlags(flags) {}
virtual bool filter(SkPaint* paint, Type t) {
paint->setFlags(paint->getFlags() & ~fFlags[t] & SkPaint::kAllFlags);
if (PictureRenderer::kMaskFilter_DrawFilterFlag & fFlags[t]) {
SkMaskFilter* maskFilter = paint->getMaskFilter();
if (maskFilter) {
paint->setMaskFilter(NULL);
}
}
if (PictureRenderer::kHinting_DrawFilterFlag & fFlags[t]) {
paint->setHinting(SkPaint::kNo_Hinting);
} else if (PictureRenderer::kSlightHinting_DrawFilterFlag & fFlags[t]) {
paint->setHinting(SkPaint::kSlight_Hinting);
}
return true;
}
private:
PictureRenderer::DrawFilterFlags* fFlags;
};
static void setUpFilter(SkCanvas* canvas, PictureRenderer::DrawFilterFlags* drawFilters) {
if (drawFilters && !canvas->getDrawFilter()) {
canvas->setDrawFilter(SkNEW_ARGS(FlagsDrawFilter, (drawFilters)))->unref();
if (drawFilters[0] & PictureRenderer::kAAClip_DrawFilterFlag) {
canvas->setAllowSoftClip(false);
}
}
}
SkCanvas* PictureRenderer::setupCanvas() {
const int width = this->getViewWidth();
const int height = this->getViewHeight();
return this->setupCanvas(width, height);
}
SkCanvas* PictureRenderer::setupCanvas(int width, int height) {
SkCanvas* canvas;
switch(fDeviceType) {
case kBitmap_DeviceType: {
SkBitmap bitmap;
sk_tools::setup_bitmap(&bitmap, width, height);
canvas = SkNEW_ARGS(SkCanvas, (bitmap));
}
break;
#if SK_SUPPORT_GPU
#if SK_ANGLE
case kAngle_DeviceType:
// fall through
#endif
#if SK_MESA
case kMesa_DeviceType:
// fall through
#endif
case kGPU_DeviceType:
case kNVPR_DeviceType: {
SkAutoTUnref<GrSurface> target;
if (fGrContext) {
// create a render target to back the device
GrSurfaceDesc desc;
desc.fConfig = kSkia8888_GrPixelConfig;
desc.fFlags = kRenderTarget_GrSurfaceFlag;
desc.fWidth = width;
desc.fHeight = height;
desc.fSampleCnt = fSampleCount;
target.reset(fGrContext->createUncachedTexture(desc, NULL, 0));
}
if (NULL == target.get()) {
SkASSERT(0);
return NULL;
}
uint32_t flags = fUseDFText ? SkGpuDevice::kDFText_Flag : 0;
SkAutoTUnref<SkGpuDevice> device(SkGpuDevice::Create(target,
SkSurfaceProps(SkSurfaceProps::kLegacyFontHost_InitType),
flags));
canvas = SkNEW_ARGS(SkCanvas, (device.get()));
break;
}
#endif
default:
SkASSERT(0);
return NULL;
}
setUpFilter(canvas, fDrawFilters);
this->scaleToScaleFactor(canvas);
// Pictures often lie about their extent (i.e., claim to be 100x100 but
// only ever draw to 90x100). Clear here so the undrawn portion will have
// a consistent color
canvas->clear(SK_ColorTRANSPARENT);
return canvas;
}
void PictureRenderer::scaleToScaleFactor(SkCanvas* canvas) {
SkASSERT(canvas != NULL);
if (fScaleFactor != SK_Scalar1) {
canvas->scale(fScaleFactor, fScaleFactor);
}
}
void PictureRenderer::end() {
this->resetState(true);
fPicture.reset(NULL);
fCanvas.reset(NULL);
}
int PictureRenderer::getViewWidth() {
SkASSERT(fPicture != NULL);
int width = SkScalarCeilToInt(fPicture->cullRect().width() * fScaleFactor);
if (fViewport.width() > 0) {
width = SkMin32(width, fViewport.width());
}
return width;
}
int PictureRenderer::getViewHeight() {
SkASSERT(fPicture != NULL);
int height = SkScalarCeilToInt(fPicture->cullRect().height() * fScaleFactor);
if (fViewport.height() > 0) {
height = SkMin32(height, fViewport.height());
}
return height;
}
/** Converts fPicture to a picture that uses a BBoxHierarchy.
* PictureRenderer subclasses that are used to test picture playback
* should call this method during init.
*/
void PictureRenderer::buildBBoxHierarchy() {
SkASSERT(fPicture);
if (kNone_BBoxHierarchyType != fBBoxHierarchyType && fPicture) {
SkAutoTDelete<SkBBHFactory> factory(this->getFactory());
SkPictureRecorder recorder;
uint32_t flags = this->recordFlags();
if (fUseMultiPictureDraw) {
flags |= SkPictureRecorder::kComputeSaveLayerInfo_RecordFlag;
}
SkCanvas* canvas = recorder.beginRecording(fPicture->cullRect().width(),
fPicture->cullRect().height(),
factory.get(),
flags);
fPicture->playback(canvas);
fPicture.reset(recorder.endRecording());
}
}
void PictureRenderer::resetState(bool callFinish) {
#if SK_SUPPORT_GPU
SkGLContext* glContext = this->getGLContext();
if (NULL == glContext) {
SkASSERT(kBitmap_DeviceType == fDeviceType);
return;
}
fGrContext->flush();
glContext->swapBuffers();
if (callFinish) {
SK_GL(*glContext, Finish());
}
#endif
}
void PictureRenderer::purgeTextures() {
SkDiscardableMemoryPool* pool = SkGetGlobalDiscardableMemoryPool();
pool->dumpPool();
#if SK_SUPPORT_GPU
SkGLContext* glContext = this->getGLContext();
if (NULL == glContext) {
SkASSERT(kBitmap_DeviceType == fDeviceType);
return;
}
// resetState should've already done this
fGrContext->flush();
fGrContext->purgeAllUnlockedResources();
#endif
}
/**
* Write the canvas to an image file and/or JSON summary.
*
* @param canvas Must be non-null. Canvas to be written to a file.
* @param writePath If nonempty, write the binary image to a file within this directory.
* @param mismatchPath If nonempty, write the binary image to a file within this directory,
* but only if the image does not match expectations.
* @param inputFilename If we are writing out a binary image, use this to build its filename.
* @param jsonSummaryPtr If not null, add image results (checksum) to this summary.
* @param useChecksumBasedFilenames If true, use checksum-based filenames when writing to disk.
* @param tileNumberPtr If not null, which tile number this image contains.
*
* @return bool True if the operation completed successfully.
*/
static bool write(SkCanvas* canvas, const SkString& writePath, const SkString& mismatchPath,
const SkString& inputFilename, ImageResultsAndExpectations *jsonSummaryPtr,
bool useChecksumBasedFilenames, const int* tileNumberPtr=NULL) {
SkASSERT(canvas != NULL);
if (NULL == canvas) {
return false;
}
SkBitmap bitmap;
SkISize size = canvas->getDeviceSize();
setup_bitmap(&bitmap, size.width(), size.height());
canvas->readPixels(&bitmap, 0, 0);
force_all_opaque(bitmap);
BitmapAndDigest bitmapAndDigest(bitmap);
SkString escapedInputFilename(inputFilename);
replace_char(&escapedInputFilename, '.', '_');
// TODO(epoger): what about including the config type within outputFilename? That way,
// we could combine results of different config types without conflicting filenames.
SkString outputFilename;
const char *outputSubdirPtr = NULL;
if (useChecksumBasedFilenames) {
ImageDigest *imageDigestPtr = bitmapAndDigest.getImageDigestPtr();
outputSubdirPtr = escapedInputFilename.c_str();
outputFilename.set(imageDigestPtr->getHashType());
outputFilename.append("_");
outputFilename.appendU64(imageDigestPtr->getHashValue());
} else {
outputFilename.set(escapedInputFilename);
if (tileNumberPtr) {
outputFilename.append("-tile");
outputFilename.appendS32(*tileNumberPtr);
}
}
outputFilename.append(".png");
if (jsonSummaryPtr) {
ImageDigest *imageDigestPtr = bitmapAndDigest.getImageDigestPtr();
SkString outputRelativePath;
if (outputSubdirPtr) {
outputRelativePath.set(outputSubdirPtr);
outputRelativePath.append("/"); // always use "/", even on Windows
outputRelativePath.append(outputFilename);
} else {
outputRelativePath.set(outputFilename);
}
jsonSummaryPtr->add(inputFilename.c_str(), outputRelativePath.c_str(),
*imageDigestPtr, tileNumberPtr);
if (!mismatchPath.isEmpty() &&
!jsonSummaryPtr->getExpectation(inputFilename.c_str(),
tileNumberPtr).matches(*imageDigestPtr)) {
if (!write_bitmap_to_disk(bitmap, mismatchPath, outputSubdirPtr, outputFilename)) {
return false;
}
}
}
if (writePath.isEmpty()) {
return true;
} else {
return write_bitmap_to_disk(bitmap, writePath, outputSubdirPtr, outputFilename);
}
}
///////////////////////////////////////////////////////////////////////////////////////////////
SkCanvas* RecordPictureRenderer::setupCanvas(int width, int height) {
// defer the canvas setup until the render step
return NULL;
}
// Encodes to PNG, unless there is already encoded data, in which case that gets
// used.
// FIXME: Share with PictureTest.cpp?
class PngPixelSerializer : public SkPixelSerializer {
public:
virtual bool onUseEncodedData(const void*, size_t) SK_OVERRIDE { return true; }
virtual SkData* onEncodePixels(const SkImageInfo& info, void* pixels,
size_t rowBytes) SK_OVERRIDE {
SkBitmap bm;
if (!bm.installPixels(info, pixels, rowBytes)) {
return NULL;
}
return SkImageEncoder::EncodeData(bm, SkImageEncoder::kPNG_Type, 100);
}
};
bool RecordPictureRenderer::render(SkBitmap** out) {
SkAutoTDelete<SkBBHFactory> factory(this->getFactory());
SkPictureRecorder recorder;
SkCanvas* canvas = recorder.beginRecording(SkIntToScalar(this->getViewWidth()),
SkIntToScalar(this->getViewHeight()),
factory.get(),
this->recordFlags());
this->scaleToScaleFactor(canvas);
fPicture->playback(canvas);
SkAutoTUnref<SkPicture> picture(recorder.endRecording());
if (!fWritePath.isEmpty()) {
// Record the new picture as a new SKP with PNG encoded bitmaps.
SkString skpPath = SkOSPath::Join(fWritePath.c_str(), fInputFilename.c_str());
SkFILEWStream stream(skpPath.c_str());
PngPixelSerializer serializer;
picture->serialize(&stream, &serializer);
return true;
}
return false;
}
SkString RecordPictureRenderer::getConfigNameInternal() {
return SkString("record");
}
///////////////////////////////////////////////////////////////////////////////////////////////
bool PipePictureRenderer::render(SkBitmap** out) {
SkASSERT(fCanvas.get() != NULL);
SkASSERT(fPicture != NULL);
if (NULL == fCanvas.get() || NULL == fPicture) {
return false;
}
PipeController pipeController(fCanvas.get());
SkGPipeWriter writer;
SkCanvas* pipeCanvas = writer.startRecording(&pipeController);
pipeCanvas->drawPicture(fPicture);
writer.endRecording();
fCanvas->flush();
if (out) {
*out = SkNEW(SkBitmap);
setup_bitmap(*out, SkScalarCeilToInt(fPicture->cullRect().width()),
SkScalarCeilToInt(fPicture->cullRect().height()));
fCanvas->readPixels(*out, 0, 0);
}
if (fEnableWrites) {
return write(fCanvas, fWritePath, fMismatchPath, fInputFilename, fJsonSummaryPtr,
fUseChecksumBasedFilenames);
} else {
return true;
}
}
SkString PipePictureRenderer::getConfigNameInternal() {
return SkString("pipe");
}
///////////////////////////////////////////////////////////////////////////////////////////////
void SimplePictureRenderer::init(const SkPicture* picture, const SkString* writePath,
const SkString* mismatchPath, const SkString* inputFilename,
bool useChecksumBasedFilenames, bool useMultiPictureDraw) {
INHERITED::init(picture, writePath, mismatchPath, inputFilename,
useChecksumBasedFilenames, useMultiPictureDraw);
this->buildBBoxHierarchy();
}
bool SimplePictureRenderer::render(SkBitmap** out) {
SkASSERT(fCanvas.get() != NULL);
SkASSERT(fPicture);
if (NULL == fCanvas.get() || NULL == fPicture) {
return false;
}
if (fUseMultiPictureDraw) {
SkMultiPictureDraw mpd;
mpd.add(fCanvas, fPicture);
mpd.draw();
} else {
fCanvas->drawPicture(fPicture);
}
fCanvas->flush();
if (out) {
*out = SkNEW(SkBitmap);
setup_bitmap(*out, SkScalarCeilToInt(fPicture->cullRect().width()),
SkScalarCeilToInt(fPicture->cullRect().height()));
fCanvas->readPixels(*out, 0, 0);
}
if (fEnableWrites) {
return write(fCanvas, fWritePath, fMismatchPath, fInputFilename, fJsonSummaryPtr,
fUseChecksumBasedFilenames);
} else {
return true;
}
}
SkString SimplePictureRenderer::getConfigNameInternal() {
return SkString("simple");
}
///////////////////////////////////////////////////////////////////////////////////////////////
#if SK_SUPPORT_GPU
TiledPictureRenderer::TiledPictureRenderer(const GrContext::Options& opts)
: INHERITED(opts)
, fTileWidth(kDefaultTileWidth)
#else
TiledPictureRenderer::TiledPictureRenderer()
: fTileWidth(kDefaultTileWidth)
#endif
, fTileHeight(kDefaultTileHeight)
, fTileWidthPercentage(0.0)
, fTileHeightPercentage(0.0)
, fTileMinPowerOf2Width(0)
, fCurrentTileOffset(-1)
, fTilesX(0)
, fTilesY(0) { }
void TiledPictureRenderer::init(const SkPicture* pict, const SkString* writePath,
const SkString* mismatchPath, const SkString* inputFilename,
bool useChecksumBasedFilenames, bool useMultiPictureDraw) {
SkASSERT(pict);
SkASSERT(0 == fTileRects.count());
if (NULL == pict || fTileRects.count() != 0) {
return;
}
// Do not call INHERITED::init(), which would create a (potentially large) canvas which is not
// used by bench_pictures.
fPicture.reset(pict)->ref();
this->CopyString(&fWritePath, writePath);
this->CopyString(&fMismatchPath, mismatchPath);
this->CopyString(&fInputFilename, inputFilename);
fUseChecksumBasedFilenames = useChecksumBasedFilenames;
fUseMultiPictureDraw = useMultiPictureDraw;
this->buildBBoxHierarchy();
if (fTileWidthPercentage > 0) {
fTileWidth = SkScalarCeilToInt(float(fTileWidthPercentage * fPicture->cullRect().width() / 100));
}
if (fTileHeightPercentage > 0) {
fTileHeight = SkScalarCeilToInt(float(fTileHeightPercentage * fPicture->cullRect().height() / 100));
}
if (fTileMinPowerOf2Width > 0) {
this->setupPowerOf2Tiles();
} else {
this->setupTiles();
}
fCanvas.reset(this->setupCanvas(fTileWidth, fTileHeight));
// Initialize to -1 so that the first call to nextTile will set this up to draw tile 0 on the
// first call to drawCurrentTile.
fCurrentTileOffset = -1;
}
void TiledPictureRenderer::end() {
fTileRects.reset();
this->INHERITED::end();
}
void TiledPictureRenderer::setupTiles() {
// Only use enough tiles to cover the viewport
const int width = this->getViewWidth();
const int height = this->getViewHeight();
fTilesX = fTilesY = 0;
for (int tile_y_start = 0; tile_y_start < height; tile_y_start += fTileHeight) {
fTilesY++;
for (int tile_x_start = 0; tile_x_start < width; tile_x_start += fTileWidth) {
if (0 == tile_y_start) {
// Only count tiles in the X direction on the first pass.
fTilesX++;
}
*fTileRects.append() = SkIRect::MakeXYWH(tile_x_start, tile_y_start,
fTileWidth, fTileHeight);
}
}
}
bool TiledPictureRenderer::tileDimensions(int &x, int &y) {
if (fTileRects.count() == 0 || NULL == fPicture) {
return false;
}
x = fTilesX;
y = fTilesY;
return true;
}
// The goal of the powers of two tiles is to minimize the amount of wasted tile
// space in the width-wise direction and then minimize the number of tiles. The
// constraints are that every tile must have a pixel width that is a power of
// two and also be of some minimal width (that is also a power of two).
//
// This is solved by first taking our picture size and rounding it up to the
// multiple of the minimal width. The binary representation of this rounded
// value gives us the tiles we need: a bit of value one means we need a tile of
// that size.
void TiledPictureRenderer::setupPowerOf2Tiles() {
// Only use enough tiles to cover the viewport
const int width = this->getViewWidth();
const int height = this->getViewHeight();
int rounded_value = width;
if (width % fTileMinPowerOf2Width != 0) {
rounded_value = width - (width % fTileMinPowerOf2Width) + fTileMinPowerOf2Width;
}
int num_bits = SkScalarCeilToInt(scalar_log2(SkIntToScalar(width)));
int largest_possible_tile_size = 1 << num_bits;
fTilesX = fTilesY = 0;
// The tile height is constant for a particular picture.
for (int tile_y_start = 0; tile_y_start < height; tile_y_start += fTileHeight) {
fTilesY++;
int tile_x_start = 0;
int current_width = largest_possible_tile_size;
// Set fTileWidth to be the width of the widest tile, so that each canvas is large enough
// to draw each tile.
fTileWidth = current_width;
while (current_width >= fTileMinPowerOf2Width) {
// It is very important this is a bitwise AND.
if (current_width & rounded_value) {
if (0 == tile_y_start) {
// Only count tiles in the X direction on the first pass.
fTilesX++;
}
*fTileRects.append() = SkIRect::MakeXYWH(tile_x_start, tile_y_start,
current_width, fTileHeight);
tile_x_start += current_width;
}
current_width >>= 1;
}
}
}
/**
* Draw the specified picture to the canvas translated to rectangle provided, so that this mini
* canvas represents the rectangle's portion of the overall picture.
* Saves and restores so that the initial clip and matrix return to their state before this function
* is called.
*/
static void draw_tile_to_canvas(SkCanvas* canvas,
const SkIRect& tileRect,
const SkPicture* picture) {
int saveCount = canvas->save();
// Translate so that we draw the correct portion of the picture.
// Perform a postTranslate so that the scaleFactor does not interfere with the positioning.
SkMatrix mat(canvas->getTotalMatrix());
mat.postTranslate(-SkIntToScalar(tileRect.fLeft), -SkIntToScalar(tileRect.fTop));
canvas->setMatrix(mat);
canvas->clipRect(SkRect::Make(tileRect));
canvas->clear(SK_ColorTRANSPARENT); // Not every picture covers the entirety of every tile
canvas->drawPicture(picture);
canvas->restoreToCount(saveCount);
canvas->flush();
}
///////////////////////////////////////////////////////////////////////////////////////////////
/**
* Copies the entirety of the src bitmap (typically a tile) into a portion of the dst bitmap.
* If the src bitmap is too large to fit within the dst bitmap after the x and y
* offsets have been applied, any excess will be ignored (so only the top-left portion of the
* src bitmap will be copied).
*
* @param src source bitmap
* @param dst destination bitmap
* @param xOffset x-offset within destination bitmap
* @param yOffset y-offset within destination bitmap
*/
static void bitmapCopyAtOffset(const SkBitmap& src, SkBitmap* dst,
int xOffset, int yOffset) {
for (int y = 0; y <src.height() && y + yOffset < dst->height() ; y++) {
for (int x = 0; x < src.width() && x + xOffset < dst->width() ; x++) {
*dst->getAddr32(xOffset + x, yOffset + y) = *src.getAddr32(x, y);
}
}
}
bool TiledPictureRenderer::nextTile(int &i, int &j) {
if (++fCurrentTileOffset < fTileRects.count()) {
i = fCurrentTileOffset % fTilesX;
j = fCurrentTileOffset / fTilesX;
return true;
}
return false;
}
void TiledPictureRenderer::drawCurrentTile() {
SkASSERT(fCurrentTileOffset >= 0 && fCurrentTileOffset < fTileRects.count());
draw_tile_to_canvas(fCanvas, fTileRects[fCurrentTileOffset], fPicture);
}
bool TiledPictureRenderer::postRender(SkCanvas* canvas, const SkIRect& tileRect,
SkBitmap* tempBM, SkBitmap** out,
int tileNumber) {
bool success = true;
if (fEnableWrites) {
success &= write(canvas, fWritePath, fMismatchPath, fInputFilename, fJsonSummaryPtr,
fUseChecksumBasedFilenames, &tileNumber);
}
if (out) {
if (canvas->readPixels(tempBM, 0, 0)) {
// Add this tile to the entire bitmap.
bitmapCopyAtOffset(*tempBM, *out, tileRect.left(), tileRect.top());
} else {
success = false;
}
}
return success;
}
bool TiledPictureRenderer::render(SkBitmap** out) {
SkASSERT(fPicture != NULL);
if (NULL == fPicture) {
return false;
}
SkBitmap bitmap;
if (out) {
*out = SkNEW(SkBitmap);
setup_bitmap(*out, SkScalarCeilToInt(fPicture->cullRect().width()),
SkScalarCeilToInt(fPicture->cullRect().height()));
setup_bitmap(&bitmap, fTileWidth, fTileHeight);
}
bool success = true;
if (fUseMultiPictureDraw) {
SkMultiPictureDraw mpd;
SkTDArray<SkSurface*> surfaces;
surfaces.setReserve(fTileRects.count());
// Create a separate SkSurface/SkCanvas for each tile along with a
// translated version of the skp (to mimic Chrome's behavior) and
// feed all such pairs to the MultiPictureDraw.
for (int i = 0; i < fTileRects.count(); ++i) {
SkImageInfo ii = fCanvas->imageInfo().makeWH(fTileRects[i].width(),
fTileRects[i].height());
*surfaces.append() = fCanvas->newSurface(ii);
surfaces[i]->getCanvas()->setMatrix(fCanvas->getTotalMatrix());
SkPictureRecorder recorder;
SkRTreeFactory bbhFactory;
SkCanvas* c = recorder.beginRecording(SkIntToScalar(fTileRects[i].width()),
SkIntToScalar(fTileRects[i].height()),
&bbhFactory,
SkPictureRecorder::kComputeSaveLayerInfo_RecordFlag);
c->save();
SkMatrix mat;
mat.setTranslate(-SkIntToScalar(fTileRects[i].fLeft),
-SkIntToScalar(fTileRects[i].fTop));
c->setMatrix(mat);
c->drawPicture(fPicture);
c->restore();
SkAutoTUnref<SkPicture> xlatedPicture(recorder.endRecording());
mpd.add(surfaces[i]->getCanvas(), xlatedPicture);
}
// Render all the buffered SkCanvases/SkPictures
mpd.draw();
// Sort out the results and cleanup the allocated surfaces
for (int i = 0; i < fTileRects.count(); ++i) {
success &= this->postRender(surfaces[i]->getCanvas(), fTileRects[i], &bitmap, out, i);
surfaces[i]->unref();
}
} else {
for (int i = 0; i < fTileRects.count(); ++i) {
draw_tile_to_canvas(fCanvas, fTileRects[i], fPicture);
success &= this->postRender(fCanvas, fTileRects[i], &bitmap, out, i);
}
}
return success;
}
SkCanvas* TiledPictureRenderer::setupCanvas(int width, int height) {
SkCanvas* canvas = this->INHERITED::setupCanvas(width, height);
SkASSERT(fPicture);
// Clip the tile to an area that is completely inside both the SkPicture and the viewport. This
// is mostly important for tiles on the right and bottom edges as they may go over this area and
// the picture may have some commands that draw outside of this area and so should not actually
// be written.
// Uses a clipRegion so that it will be unaffected by the scale factor, which may have been set
// by INHERITED::setupCanvas.
SkRegion clipRegion;
clipRegion.setRect(0, 0, this->getViewWidth(), this->getViewHeight());
canvas->clipRegion(clipRegion);
return canvas;
}
SkString TiledPictureRenderer::getConfigNameInternal() {
SkString name;
if (fTileMinPowerOf2Width > 0) {
name.append("pow2tile_");
name.appendf("%i", fTileMinPowerOf2Width);
} else {
name.append("tile_");
if (fTileWidthPercentage > 0) {
name.appendf("%.f%%", fTileWidthPercentage);
} else {
name.appendf("%i", fTileWidth);
}
}
name.append("x");
if (fTileHeightPercentage > 0) {
name.appendf("%.f%%", fTileHeightPercentage);
} else {
name.appendf("%i", fTileHeight);
}
return name;
}
///////////////////////////////////////////////////////////////////////////////////////////////
void PlaybackCreationRenderer::setup() {
SkAutoTDelete<SkBBHFactory> factory(this->getFactory());
fRecorder.reset(SkNEW(SkPictureRecorder));
SkCanvas* canvas = fRecorder->beginRecording(SkIntToScalar(this->getViewWidth()),
SkIntToScalar(this->getViewHeight()),
factory.get(),
this->recordFlags());
this->scaleToScaleFactor(canvas);
canvas->drawPicture(fPicture);
}
bool PlaybackCreationRenderer::render(SkBitmap** out) {
fPicture.reset(fRecorder->endRecording());
// Since this class does not actually render, return false.
return false;
}
SkString PlaybackCreationRenderer::getConfigNameInternal() {
return SkString("playback_creation");
}
///////////////////////////////////////////////////////////////////////////////////////////////
// SkPicture variants for each BBoxHierarchy type
SkBBHFactory* PictureRenderer::getFactory() {
switch (fBBoxHierarchyType) {
case kNone_BBoxHierarchyType:
return NULL;
case kRTree_BBoxHierarchyType:
return SkNEW(SkRTreeFactory);
case kTileGrid_BBoxHierarchyType:
return SkNEW_ARGS(SkTileGridFactory, (fGridInfo));
}
SkASSERT(0); // invalid bbhType
return NULL;
}
///////////////////////////////////////////////////////////////////////////////
class GatherRenderer : public PictureRenderer {
public:
#if SK_SUPPORT_GPU
GatherRenderer(const GrContext::Options& opts) : INHERITED(opts) { }
#endif
virtual bool render(SkBitmap** out = NULL) SK_OVERRIDE {
SkRect bounds = SkRect::MakeWH(SkIntToScalar(fPicture->cullRect().width()),
SkIntToScalar(fPicture->cullRect().height()));
SkData* data = SkPictureUtils::GatherPixelRefs(fPicture, bounds);
SkSafeUnref(data);
return (fWritePath.isEmpty()); // we don't have anything to write
}
private:
virtual SkString getConfigNameInternal() SK_OVERRIDE {
return SkString("gather_pixelrefs");
}
typedef PictureRenderer INHERITED;
};
#if SK_SUPPORT_GPU
PictureRenderer* CreateGatherPixelRefsRenderer(const GrContext::Options& opts) {
return SkNEW_ARGS(GatherRenderer, (opts));
}
#else
PictureRenderer* CreateGatherPixelRefsRenderer() {
return SkNEW(GatherRenderer);
}
#endif
} // namespace sk_tools