void SkSVGDevice::drawSprite(const SkDraw& draw, const SkBitmap& bitmap,
int x, int y, const SkPaint& paint) {
SkMatrix adjustedMatrix = *draw.fMatrix;
adjustedMatrix.preTranslate(SkIntToScalar(x), SkIntToScalar(y));
SkDraw adjustedDraw(draw);
adjustedDraw.fMatrix = &adjustedMatrix;
drawBitmapCommon(adjustedDraw, bitmap, paint);
}
bool SkLayerRasterizer::onRasterize(const SkPath& path, const SkMatrix& matrix,
const SkIRect* clipBounds,
SkMask* mask, SkMask::CreateMode mode) const {
SkASSERT(fLayers);
if (fLayers->empty()) {
return false;
}
if (SkMask::kJustRenderImage_CreateMode != mode) {
if (!compute_bounds(*fLayers, path, matrix, clipBounds, &mask->fBounds))
return false;
}
if (SkMask::kComputeBoundsAndRenderImage_CreateMode == mode) {
mask->fFormat = SkMask::kA8_Format;
mask->fRowBytes = mask->fBounds.width();
size_t size = mask->computeImageSize();
if (0 == size) {
return false; // too big to allocate, abort
}
mask->fImage = SkMask::AllocImage(size);
memset(mask->fImage, 0, size);
}
if (SkMask::kJustComputeBounds_CreateMode != mode) {
SkBitmap device;
SkRasterClip rectClip;
SkDraw draw;
SkMatrix translatedMatrix; // this translates us to our local pixels
SkMatrix drawMatrix; // this translates the path by each layer's offset
rectClip.setRect(SkIRect::MakeWH(mask->fBounds.width(), mask->fBounds.height()));
translatedMatrix = matrix;
translatedMatrix.postTranslate(-SkIntToScalar(mask->fBounds.fLeft),
-SkIntToScalar(mask->fBounds.fTop));
device.installMaskPixels(*mask);
draw.fBitmap = &device;
draw.fMatrix = &drawMatrix;
draw.fRC = &rectClip;
draw.fClip = &rectClip.bwRgn();
// we set the matrixproc in the loop, as the matrix changes each time (potentially)
SkDeque::F2BIter iter(*fLayers);
SkLayerRasterizer_Rec* rec;
while ((rec = (SkLayerRasterizer_Rec*)iter.next()) != NULL) {
drawMatrix = translatedMatrix;
drawMatrix.preTranslate(rec->fOffset.fX, rec->fOffset.fY);
draw.drawPath(path, rec->fPaint);
}
}
return true;
}
bool SkLayerRasterizer::onRasterize(const SkPath& path, const SkMatrix& matrix,
const SkIRect* clipBounds,
SkMask* mask, SkMask::CreateMode mode)
{
if (fLayers.empty())
return false;
if (SkMask::kJustRenderImage_CreateMode != mode)
{
if (!compute_bounds(fLayers, path, matrix, clipBounds, &mask->fBounds))
return false;
}
if (SkMask::kComputeBoundsAndRenderImage_CreateMode == mode)
{
mask->fFormat = SkMask::kA8_Format;
mask->fRowBytes = SkToU16(mask->fBounds.width());
mask->fImage = SkMask::AllocImage(mask->computeImageSize());
memset(mask->fImage, 0, mask->computeImageSize());
}
if (SkMask::kJustComputeBounds_CreateMode != mode)
{
SkBitmap device;
SkDraw draw;
SkMatrix translatedMatrix; // this translates us to our local pixels
SkMatrix drawMatrix; // this translates the path by each layer's offset
SkRegion rectClip;
rectClip.setRect(0, 0, mask->fBounds.width(), mask->fBounds.height());
translatedMatrix = matrix;
translatedMatrix.postTranslate(-SkIntToScalar(mask->fBounds.fLeft),
-SkIntToScalar(mask->fBounds.fTop));
device.setConfig(SkBitmap::kA8_Config, mask->fBounds.width(), mask->fBounds.height(), mask->fRowBytes);
device.setPixels(mask->fImage);
draw.fBitmap = &device;
draw.fMatrix = &drawMatrix;
draw.fClip = &rectClip;
// we set the matrixproc in the loop, as the matrix changes each time (potentially)
draw.fBounder = NULL;
SkDeque::Iter iter(fLayers);
SkLayerRasterizer_Rec* rec;
while ((rec = (SkLayerRasterizer_Rec*)iter.next()) != NULL) {
drawMatrix = translatedMatrix;
drawMatrix.preTranslate(rec->fOffset.fX, rec->fOffset.fY);
draw.drawPath(path, rec->fPaint);
}
}
return true;
}
static SkBitmap make_bmp(int w, int h) {
SkBitmap bmp;
bmp.allocN32Pixels(w, h, true);
SkCanvas canvas(bmp);
SkScalar wScalar = SkIntToScalar(w);
SkScalar hScalar = SkIntToScalar(h);
SkPoint pt = { wScalar / 2, hScalar / 2 };
SkScalar radius = 3 * SkMaxScalar(wScalar, hScalar);
SkColor colors[] = { SK_ColorDKGRAY, 0xFF222255,
0xFF331133, 0xFF884422,
0xFF000022, SK_ColorWHITE,
0xFFAABBCC};
SkScalar pos[] = {0,
SK_Scalar1 / 6,
2 * SK_Scalar1 / 6,
3 * SK_Scalar1 / 6,
4 * SK_Scalar1 / 6,
5 * SK_Scalar1 / 6,
SK_Scalar1};
SkPaint paint;
SkRect rect = SkRect::MakeWH(wScalar, hScalar);
SkMatrix mat = SkMatrix::I();
for (int i = 0; i < 4; ++i) {
paint.setShader(SkGradientShader::CreateRadial(
pt, radius,
colors, pos,
SK_ARRAY_COUNT(colors),
SkShader::kRepeat_TileMode,
0, &mat))->unref();
canvas.drawRect(rect, paint);
rect.inset(wScalar / 8, hScalar / 8);
mat.preTranslate(6 * wScalar, 6 * hScalar);
mat.postScale(SK_Scalar1 / 3, SK_Scalar1 / 3);
}
paint.setAntiAlias(true);
sk_tool_utils::set_portable_typeface(&paint);
paint.setTextSize(wScalar / 2.2f);
paint.setShader(0);
paint.setColor(SK_ColorLTGRAY);
static const char kTxt[] = "Skia";
SkPoint texPos = { wScalar / 17, hScalar / 2 + paint.getTextSize() / 2.5f };
canvas.drawText(kTxt, SK_ARRAY_COUNT(kTxt)-1, texPos.fX, texPos.fY, paint);
paint.setColor(SK_ColorBLACK);
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(SK_Scalar1);
canvas.drawText(kTxt, SK_ARRAY_COUNT(kTxt)-1, texPos.fX, texPos.fY, paint);
return bmp;
}
void GrLayerHoister::DrawLayersToAtlas(GrContext* context,
const SkTDArray<GrHoistedLayer>& atlased) {
if (atlased.count() > 0) {
// All the atlased layers are rendered into the same GrTexture
SkAutoTUnref<SkSurface> surface(SkSurface::NewRenderTargetDirect(
atlased[0].fLayer->texture()->asRenderTarget(), NULL));
SkCanvas* atlasCanvas = surface->getCanvas();
SkPaint clearPaint;
clearPaint.setColor(SK_ColorTRANSPARENT);
clearPaint.setXfermode(SkXfermode::Create(SkXfermode::kSrc_Mode))->unref();
for (int i = 0; i < atlased.count(); ++i) {
const GrCachedLayer* layer = atlased[i].fLayer;
const SkPicture* pict = atlased[i].fPicture;
const SkIPoint offset = atlased[i].fOffset;
SkDEBUGCODE(const SkPaint* layerPaint = layer->paint();)
SkASSERT(!layerPaint || !layerPaint->getImageFilter());
atlasCanvas->save();
// Add a rect clip to make sure the rendering doesn't
// extend beyond the boundaries of the atlased sub-rect
SkRect bound = SkRect::MakeXYWH(SkIntToScalar(layer->rect().fLeft),
SkIntToScalar(layer->rect().fTop),
SkIntToScalar(layer->rect().width()),
SkIntToScalar(layer->rect().height()));
atlasCanvas->clipRect(bound);
// Since 'clear' doesn't respect the clip we need to draw a rect
atlasCanvas->drawRect(bound, clearPaint);
// '-offset' maps the layer's top/left to the origin.
// Since this layer is atlased, the top/left corner needs
// to be offset to the correct location in the backing texture.
SkMatrix initialCTM;
initialCTM.setTranslate(SkIntToScalar(-offset.fX), SkIntToScalar(-offset.fY));
initialCTM.preTranslate(bound.fLeft, bound.fTop);
initialCTM.preConcat(atlased[i].fPreMat);
atlasCanvas->setMatrix(initialCTM);
atlasCanvas->concat(atlased[i].fLocalMat);
SkRecordPartialDraw(*pict->fRecord.get(), atlasCanvas, bound,
layer->start() + 1, layer->stop(), initialCTM);
atlasCanvas->restore();
}
atlasCanvas->flush();
}
void GrLayerHoister::DrawLayersToAtlas(GrContext* context,
const SkTDArray<GrHoistedLayer>& atlased) {
if (atlased.count() > 0) {
// All the atlased layers are rendered into the same GrTexture
SkSurfaceProps props(0, kUnknown_SkPixelGeometry);
SkAutoTUnref<SkSurface> surface(SkSurface::NewRenderTargetDirect(
atlased[0].fLayer->texture()->asRenderTarget(), &props));
SkCanvas* atlasCanvas = surface->getCanvas();
for (int i = 0; i < atlased.count(); ++i) {
const GrCachedLayer* layer = atlased[i].fLayer;
const SkBigPicture* pict = atlased[i].fPicture->asSkBigPicture();
if (!pict) {
// TODO: can we assume / assert this?
continue;
}
const SkIPoint offset = SkIPoint::Make(layer->srcIR().fLeft, layer->srcIR().fTop);
SkDEBUGCODE(const SkPaint* layerPaint = layer->paint();)
SkASSERT(!layerPaint || !layerPaint->getImageFilter());
SkASSERT(!layer->filter());
atlasCanvas->save();
// Add a rect clip to make sure the rendering doesn't
// extend beyond the boundaries of the atlased sub-rect
const SkRect bound = SkRect::Make(layer->rect());
atlasCanvas->clipRect(bound);
atlasCanvas->clear(0);
// '-offset' maps the layer's top/left to the origin.
// Since this layer is atlased, the top/left corner needs
// to be offset to the correct location in the backing texture.
SkMatrix initialCTM;
initialCTM.setTranslate(SkIntToScalar(-offset.fX), SkIntToScalar(-offset.fY));
initialCTM.preTranslate(bound.fLeft, bound.fTop);
initialCTM.preConcat(atlased[i].fPreMat);
atlasCanvas->setMatrix(initialCTM);
atlasCanvas->concat(atlased[i].fLocalMat);
pict->partialPlayback(atlasCanvas, layer->start() + 1, layer->stop(), initialCTM);
atlasCanvas->restore();
}
atlasCanvas->flush();
}
////////////////////////////////////////////////////////////////////////////////
// set up the draw state to enable the aa clipping mask. Besides setting up the
// stage matrix this also alters the vertex layout
static const GrFragmentProcessor* create_fp_for_mask(GrTexture* result, const SkIRect &devBound) {
SkMatrix mat;
// We use device coords to compute the texture coordinates. We set our matrix to be a
// translation to the devBound, and then a scaling matrix to normalized coords.
mat.setIDiv(result->width(), result->height());
mat.preTranslate(SkIntToScalar(-devBound.fLeft),
SkIntToScalar(-devBound.fTop));
SkIRect domainTexels = SkIRect::MakeWH(devBound.width(), devBound.height());
return GrTextureDomainEffect::Create(result,
mat,
GrTextureDomain::MakeTexelDomain(result, domainTexels),
GrTextureDomain::kDecal_Mode,
GrTextureParams::kNone_FilterMode,
kDevice_GrCoordSet);
}
void draw(SkCanvas* canvas) {
SkPaint paint;
SkPictureRecorder recorder;
SkCanvas* recordingCanvas = recorder.beginRecording(50, 50);
for (auto color : { SK_ColorRED, SK_ColorBLUE, 0xff007f00 } ) {
paint.setColor(color);
recordingCanvas->drawRect({10, 10, 30, 40}, paint);
recordingCanvas->translate(10, 10);
recordingCanvas->scale(1.2f, 1.4f);
}
sk_sp<SkPicture> playback = recorder.finishRecordingAsPicture();
const SkPicture* playbackPtr = playback.get();
SkMatrix matrix;
matrix.reset();
for (auto alpha : { 70, 140, 210 } ) {
paint.setAlpha(alpha);
canvas->drawPicture(playbackPtr, &matrix, &paint);
matrix.preTranslate(70, 70);
}
}
void GrSWMaskHelper::DrawToTargetWithPathMask(GrTexture* texture,
GrDrawTarget* target,
const GrIRect& rect) {
GrDrawState* drawState = target->drawState();
GrDrawState::AutoDeviceCoordDraw adcd(drawState);
if (!adcd.succeeded()) {
return;
}
enum {
// the SW path renderer shares this stage with glyph
// rendering (kGlyphMaskStage in GrTextContext)
// && edge rendering (kEdgeEffectStage in GrContext)
kPathMaskStage = GrPaint::kTotalStages,
};
GrRect dstRect = GrRect::MakeLTRB(
SK_Scalar1 * rect.fLeft,
SK_Scalar1 * rect.fTop,
SK_Scalar1 * rect.fRight,
SK_Scalar1 * rect.fBottom);
// We want to use device coords to compute the texture coordinates. We set our matrix to be
// equal to the view matrix followed by a translation so that the top-left of the device bounds
// maps to 0,0, and then a scaling matrix to normalized coords. We apply this matrix to the
// vertex positions rather than local coords.
SkMatrix maskMatrix;
maskMatrix.setIDiv(texture->width(), texture->height());
maskMatrix.preTranslate(SkIntToScalar(-rect.fLeft), SkIntToScalar(-rect.fTop));
maskMatrix.preConcat(drawState->getViewMatrix());
GrAssert(!drawState->isStageEnabled(kPathMaskStage));
drawState->setEffect(kPathMaskStage,
GrSimpleTextureEffect::Create(texture,
maskMatrix,
false,
GrEffect::kPosition_CoordsType))->unref();
target->drawSimpleRect(dstRect);
drawState->disableStage(kPathMaskStage);
}
static void morphpoints(SkPoint dst[], const SkPoint src[], int count,
SkPathMeasure& meas, SkScalar dist) {
for (int i = 0; i < count; i++) {
SkPoint pos;
SkVector tangent;
SkScalar sx = src[i].fX;
SkScalar sy = src[i].fY;
meas.getPosTan(dist + sx, &pos, &tangent);
SkMatrix matrix;
SkPoint pt;
pt.set(sx, sy);
matrix.setSinCos(tangent.fY, tangent.fX, 0, 0);
matrix.preTranslate(-sx, 0);
matrix.postTranslate(pos.fX, pos.fY);
matrix.mapPoints(&dst[i], &pt, 1);
}
}
static bool compute_bounds(const SkDeque& layers, const SkPath& path,
const SkMatrix& matrix,
const SkIRect* clipBounds, SkIRect* bounds) {
SkDeque::F2BIter iter(layers);
SkLayerRasterizer_Rec* rec;
bounds->set(SK_MaxS32, SK_MaxS32, SK_MinS32, SK_MinS32);
while ((rec = (SkLayerRasterizer_Rec*)iter.next()) != NULL) {
const SkPaint& paint = rec->fPaint;
SkPath fillPath, devPath;
const SkPath* p = &path;
if (paint.getPathEffect() || paint.getStyle() != SkPaint::kFill_Style) {
paint.getFillPath(path, &fillPath);
p = &fillPath;
}
if (p->isEmpty()) {
continue;
}
// apply the matrix and offset
{
SkMatrix m = matrix;
m.preTranslate(rec->fOffset.fX, rec->fOffset.fY);
p->transform(m, &devPath);
}
SkMask mask;
if (!SkDraw::DrawToMask(devPath, clipBounds, paint.getMaskFilter(),
&matrix, &mask,
SkMask::kJustComputeBounds_CreateMode,
SkPaint::kFill_Style)) {
return false;
}
bounds->join(mask.fBounds);
}
return true;
}
void GrSWMaskHelper::DrawToTargetWithPathMask(GrTexture* texture,
GrDrawContext* drawContext,
const GrPaint* paint,
const GrUserStencilSettings* userStencilSettings,
const GrClip& clip,
GrColor color,
const SkMatrix& viewMatrix,
const SkIRect& rect) {
SkMatrix invert;
if (!viewMatrix.invert(&invert)) {
return;
}
SkRect dstRect = SkRect::MakeLTRB(SK_Scalar1 * rect.fLeft,
SK_Scalar1 * rect.fTop,
SK_Scalar1 * rect.fRight,
SK_Scalar1 * rect.fBottom);
// We use device coords to compute the texture coordinates. We take the device coords and apply
// a translation so that the top-left of the device bounds maps to 0,0, and then a scaling
// matrix to normalized coords.
SkMatrix maskMatrix;
maskMatrix.setIDiv(texture->width(), texture->height());
maskMatrix.preTranslate(SkIntToScalar(-rect.fLeft), SkIntToScalar(-rect.fTop));
GrPipelineBuilder pipelineBuilder(*paint, drawContext->isUnifiedMultisampled());
pipelineBuilder.setRenderTarget(drawContext->accessRenderTarget());
pipelineBuilder.setUserStencil(userStencilSettings);
pipelineBuilder.addCoverageFragmentProcessor(
GrSimpleTextureEffect::Create(texture,
maskMatrix,
GrTextureParams::kNone_FilterMode,
kDevice_GrCoordSet))->unref();
SkAutoTUnref<GrDrawBatch> batch(GrRectBatchFactory::CreateNonAAFill(color, SkMatrix::I(),
dstRect, nullptr, &invert));
drawContext->drawBatch(pipelineBuilder, clip, batch);
}
void SkBaseDevice::drawTextBlob(const SkDraw& draw, const SkTextBlob* blob, SkScalar x, SkScalar y,
const SkPaint &paint) {
SkMatrix localMatrix;
SkDraw localDraw(draw);
if (x || y) {
localMatrix = *draw.fMatrix;
localMatrix.preTranslate(x, y);
localDraw.fMatrix = &localMatrix;
}
SkPaint runPaint = paint;
SkTextBlob::RunIterator it(blob);
while (!it.done()) {
size_t textLen = it.glyphCount() * sizeof(uint16_t);
const SkPoint& offset = it.offset();
// applyFontToPaint() always overwrites the exact same attributes,
// so it is safe to not re-seed the paint.
it.applyFontToPaint(&runPaint);
switch (it.positioning()) {
case SkTextBlob::kDefault_Positioning:
this->drawText(localDraw, it.glyphs(), textLen, offset.x(), offset.y(), runPaint);
break;
case SkTextBlob::kHorizontal_Positioning:
case SkTextBlob::kFull_Positioning:
this->drawPosText(localDraw, it.glyphs(), textLen, it.pos(), offset.y(),
SkTextBlob::ScalarsPerGlyph(it.positioning()), runPaint);
break;
default:
SkFAIL("unhandled positioning mode");
}
it.next();
}
}
SkPDFImageShader::SkPDFImageShader(SkPDFShader::State* state) : fState(state) {
fState.get()->fImage.lockPixels();
SkMatrix finalMatrix = fState.get()->fCanvasTransform;
finalMatrix.preConcat(fState.get()->fShaderTransform);
SkRect surfaceBBox;
surfaceBBox.set(fState.get()->fBBox);
transformBBox(finalMatrix, &surfaceBBox);
SkMatrix unflip;
unflip.setTranslate(0, SkScalarRound(surfaceBBox.height()));
unflip.preScale(SK_Scalar1, -SK_Scalar1);
SkISize size = SkISize::Make(SkScalarRound(surfaceBBox.width()),
SkScalarRound(surfaceBBox.height()));
SkPDFDevice pattern(size, size, unflip);
SkCanvas canvas(&pattern);
canvas.translate(-surfaceBBox.fLeft, -surfaceBBox.fTop);
finalMatrix.preTranslate(surfaceBBox.fLeft, surfaceBBox.fTop);
const SkBitmap* image = &fState.get()->fImage;
int width = image->width();
int height = image->height();
SkShader::TileMode tileModes[2];
tileModes[0] = fState.get()->fImageTileModes[0];
tileModes[1] = fState.get()->fImageTileModes[1];
canvas.drawBitmap(*image, 0, 0);
SkRect patternBBox = SkRect::MakeXYWH(-surfaceBBox.fLeft, -surfaceBBox.fTop,
width, height);
// Tiling is implied. First we handle mirroring.
if (tileModes[0] == SkShader::kMirror_TileMode) {
SkMatrix xMirror;
xMirror.setScale(-1, 1);
xMirror.postTranslate(2 * width, 0);
canvas.drawBitmapMatrix(*image, xMirror);
patternBBox.fRight += width;
}
if (tileModes[1] == SkShader::kMirror_TileMode) {
SkMatrix yMirror;
yMirror.setScale(SK_Scalar1, -SK_Scalar1);
yMirror.postTranslate(0, 2 * height);
canvas.drawBitmapMatrix(*image, yMirror);
patternBBox.fBottom += height;
}
if (tileModes[0] == SkShader::kMirror_TileMode &&
tileModes[1] == SkShader::kMirror_TileMode) {
SkMatrix mirror;
mirror.setScale(-1, -1);
mirror.postTranslate(2 * width, 2 * height);
canvas.drawBitmapMatrix(*image, mirror);
}
// Then handle Clamping, which requires expanding the pattern canvas to
// cover the entire surfaceBBox.
// If both x and y are in clamp mode, we start by filling in the corners.
// (Which are just a rectangles of the corner colors.)
if (tileModes[0] == SkShader::kClamp_TileMode &&
tileModes[1] == SkShader::kClamp_TileMode) {
SkPaint paint;
SkRect rect;
rect = SkRect::MakeLTRB(surfaceBBox.fLeft, surfaceBBox.fTop, 0, 0);
if (!rect.isEmpty()) {
paint.setColor(image->getColor(0, 0));
canvas.drawRect(rect, paint);
}
rect = SkRect::MakeLTRB(width, surfaceBBox.fTop, surfaceBBox.fRight, 0);
if (!rect.isEmpty()) {
paint.setColor(image->getColor(width - 1, 0));
canvas.drawRect(rect, paint);
}
rect = SkRect::MakeLTRB(width, height, surfaceBBox.fRight,
surfaceBBox.fBottom);
if (!rect.isEmpty()) {
paint.setColor(image->getColor(width - 1, height - 1));
canvas.drawRect(rect, paint);
}
rect = SkRect::MakeLTRB(surfaceBBox.fLeft, height, 0,
surfaceBBox.fBottom);
if (!rect.isEmpty()) {
paint.setColor(image->getColor(0, height - 1));
canvas.drawRect(rect, paint);
}
}
// Then expand the left, right, top, then bottom.
if (tileModes[0] == SkShader::kClamp_TileMode) {
SkIRect subset = SkIRect::MakeXYWH(0, 0, 1, height);
if (surfaceBBox.fLeft < 0) {
SkBitmap left;
SkAssertResult(image->extractSubset(&left, subset));
SkMatrix leftMatrix;
leftMatrix.setScale(-surfaceBBox.fLeft, 1);
leftMatrix.postTranslate(surfaceBBox.fLeft, 0);
canvas.drawBitmapMatrix(left, leftMatrix);
if (tileModes[1] == SkShader::kMirror_TileMode) {
leftMatrix.postScale(SK_Scalar1, -SK_Scalar1);
leftMatrix.postTranslate(0, 2 * height);
canvas.drawBitmapMatrix(left, leftMatrix);
}
patternBBox.fLeft = 0;
}
if (surfaceBBox.fRight > width) {
SkBitmap right;
subset.offset(width - 1, 0);
SkAssertResult(image->extractSubset(&right, subset));
SkMatrix rightMatrix;
rightMatrix.setScale(surfaceBBox.fRight - width, 1);
rightMatrix.postTranslate(width, 0);
canvas.drawBitmapMatrix(right, rightMatrix);
if (tileModes[1] == SkShader::kMirror_TileMode) {
rightMatrix.postScale(SK_Scalar1, -SK_Scalar1);
rightMatrix.postTranslate(0, 2 * height);
canvas.drawBitmapMatrix(right, rightMatrix);
}
patternBBox.fRight = surfaceBBox.width();
}
}
if (tileModes[1] == SkShader::kClamp_TileMode) {
SkIRect subset = SkIRect::MakeXYWH(0, 0, width, 1);
if (surfaceBBox.fTop < 0) {
SkBitmap top;
SkAssertResult(image->extractSubset(&top, subset));
SkMatrix topMatrix;
topMatrix.setScale(SK_Scalar1, -surfaceBBox.fTop);
topMatrix.postTranslate(0, surfaceBBox.fTop);
canvas.drawBitmapMatrix(top, topMatrix);
if (tileModes[0] == SkShader::kMirror_TileMode) {
topMatrix.postScale(-1, 1);
topMatrix.postTranslate(2 * width, 0);
canvas.drawBitmapMatrix(top, topMatrix);
}
patternBBox.fTop = 0;
}
if (surfaceBBox.fBottom > height) {
SkBitmap bottom;
subset.offset(0, height - 1);
SkAssertResult(image->extractSubset(&bottom, subset));
SkMatrix bottomMatrix;
bottomMatrix.setScale(SK_Scalar1, surfaceBBox.fBottom - height);
bottomMatrix.postTranslate(0, height);
canvas.drawBitmapMatrix(bottom, bottomMatrix);
if (tileModes[0] == SkShader::kMirror_TileMode) {
bottomMatrix.postScale(-1, 1);
bottomMatrix.postTranslate(2 * width, 0);
canvas.drawBitmapMatrix(bottom, bottomMatrix);
}
patternBBox.fBottom = surfaceBBox.height();
}
}
SkRefPtr<SkPDFArray> patternBBoxArray = new SkPDFArray;
patternBBoxArray->unref(); // SkRefPtr and new both took a reference.
patternBBoxArray->reserve(4);
patternBBoxArray->appendScalar(patternBBox.fLeft);
patternBBoxArray->appendScalar(patternBBox.fTop);
patternBBoxArray->appendScalar(patternBBox.fRight);
patternBBoxArray->appendScalar(patternBBox.fBottom);
// Put the canvas into the pattern stream (fContent).
SkRefPtr<SkStream> content = pattern.content();
content->unref(); // SkRefPtr and content() both took a reference.
pattern.getResources(&fResources);
setData(content.get());
insertName("Type", "Pattern");
insertInt("PatternType", 1);
insertInt("PaintType", 1);
insertInt("TilingType", 1);
insert("BBox", patternBBoxArray.get());
insertScalar("XStep", patternBBox.width());
insertScalar("YStep", patternBBox.height());
insert("Resources", pattern.getResourceDict());
insert("Matrix", SkPDFUtils::MatrixToArray(finalMatrix))->unref();
fState.get()->fImage.unlockPixels();
}
sk_sp<SkSpecialImage> SkDisplacementMapEffect::onFilterImage(SkSpecialImage* source,
const Context& ctx,
SkIPoint* offset) const {
SkIPoint colorOffset = SkIPoint::Make(0, 0);
sk_sp<SkSpecialImage> color(this->filterInput(1, source, ctx, &colorOffset));
if (!color) {
return nullptr;
}
SkIPoint displOffset = SkIPoint::Make(0, 0);
sk_sp<SkSpecialImage> displ(this->filterInput(0, source, ctx, &displOffset));
if (!displ) {
return nullptr;
}
const SkIRect srcBounds = SkIRect::MakeXYWH(colorOffset.x(), colorOffset.y(),
color->width(), color->height());
// Both paths do bounds checking on color pixel access, we don't need to
// pad the color bitmap to bounds here.
SkIRect bounds;
if (!this->applyCropRect(ctx, srcBounds, &bounds)) {
return nullptr;
}
SkIRect displBounds;
displ = this->applyCropRect(ctx, displ.get(), &displOffset, &displBounds);
if (!displ) {
return nullptr;
}
if (!bounds.intersect(displBounds)) {
return nullptr;
}
const SkIRect colorBounds = bounds.makeOffset(-colorOffset.x(), -colorOffset.y());
SkVector scale = SkVector::Make(fScale, fScale);
ctx.ctm().mapVectors(&scale, 1);
#if SK_SUPPORT_GPU
if (source->isTextureBacked()) {
GrContext* context = source->getContext();
sk_sp<GrTexture> colorTexture(color->asTextureRef(context));
sk_sp<GrTexture> displTexture(displ->asTextureRef(context));
if (!colorTexture || !displTexture) {
return nullptr;
}
GrSurfaceDesc desc;
desc.fFlags = kRenderTarget_GrSurfaceFlag;
desc.fWidth = bounds.width();
desc.fHeight = bounds.height();
desc.fConfig = kSkia8888_GrPixelConfig;
SkAutoTUnref<GrTexture> dst(context->textureProvider()->createApproxTexture(desc));
if (!dst) {
return nullptr;
}
GrPaint paint;
SkMatrix offsetMatrix = GrCoordTransform::MakeDivByTextureWHMatrix(displTexture.get());
offsetMatrix.preTranslate(SkIntToScalar(colorOffset.fX - displOffset.fX),
SkIntToScalar(colorOffset.fY - displOffset.fY));
paint.addColorFragmentProcessor(
GrDisplacementMapEffect::Create(fXChannelSelector,
fYChannelSelector,
scale,
displTexture.get(),
offsetMatrix,
colorTexture.get(),
SkISize::Make(color->width(),
color->height())))->unref();
paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
SkMatrix matrix;
matrix.setTranslate(-SkIntToScalar(colorBounds.x()), -SkIntToScalar(colorBounds.y()));
SkAutoTUnref<GrDrawContext> drawContext(context->drawContext(dst->asRenderTarget()));
if (!drawContext) {
return nullptr;
}
drawContext->drawRect(GrClip::WideOpen(), paint, matrix, SkRect::Make(colorBounds));
offset->fX = bounds.left();
offset->fY = bounds.top();
return SkSpecialImage::MakeFromGpu(SkIRect::MakeWH(bounds.width(), bounds.height()),
kNeedNewImageUniqueID_SpecialImage,
dst);
}
#endif
SkBitmap colorBM, displBM;
if (!color->getROPixels(&colorBM) || !displ->getROPixels(&displBM)) {
return nullptr;
}
if ((colorBM.colorType() != kN32_SkColorType) ||
(displBM.colorType() != kN32_SkColorType)) {
return nullptr;
}
SkAutoLockPixels colorLock(colorBM), displLock(displBM);
if (!colorBM.getPixels() || !displBM.getPixels()) {
return nullptr;
}
SkImageInfo info = SkImageInfo::MakeN32(bounds.width(), bounds.height(),
colorBM.alphaType());
SkBitmap dst;
if (!dst.tryAllocPixels(info)) {
return nullptr;
}
SkAutoLockPixels dstLock(dst);
computeDisplacement(fXChannelSelector, fYChannelSelector, scale, &dst,
displBM, colorOffset - displOffset, colorBM, colorBounds);
offset->fX = bounds.left();
offset->fY = bounds.top();
return SkSpecialImage::MakeFromRaster(SkIRect::MakeWH(bounds.width(), bounds.height()),
dst);
}
bool SkXfermodeImageFilter::filterImageGPU(Proxy* proxy,
const SkBitmap& src,
const Context& ctx,
SkBitmap* result,
SkIPoint* offset) const {
SkBitmap background = src;
SkIPoint backgroundOffset = SkIPoint::Make(0, 0);
if (getInput(0) && !getInput(0)->getInputResultGPU(proxy, src, ctx, &background,
&backgroundOffset)) {
return onFilterImage(proxy, src, ctx, result, offset);
}
GrTexture* backgroundTex = background.getTexture();
SkBitmap foreground = src;
SkIPoint foregroundOffset = SkIPoint::Make(0, 0);
if (getInput(1) && !getInput(1)->getInputResultGPU(proxy, src, ctx, &foreground,
&foregroundOffset)) {
return onFilterImage(proxy, src, ctx, result, offset);
}
GrTexture* foregroundTex = foreground.getTexture();
GrContext* context = foregroundTex->getContext();
GrEffect* xferEffect = NULL;
GrTextureDesc desc;
desc.fFlags = kRenderTarget_GrTextureFlagBit | kNoStencil_GrTextureFlagBit;
desc.fWidth = src.width();
desc.fHeight = src.height();
desc.fConfig = kSkia8888_GrPixelConfig;
GrAutoScratchTexture ast(context, desc);
if (NULL == ast.texture()) {
return false;
}
SkAutoTUnref<GrTexture> dst(ast.detach());
GrContext::AutoRenderTarget art(context, dst->asRenderTarget());
if (!fMode || !fMode->asNewEffect(&xferEffect, backgroundTex)) {
// canFilterImageGPU() should've taken care of this
SkASSERT(false);
return false;
}
SkMatrix foregroundMatrix = GrCoordTransform::MakeDivByTextureWHMatrix(foregroundTex);
foregroundMatrix.preTranslate(SkIntToScalar(backgroundOffset.fX-foregroundOffset.fX),
SkIntToScalar(backgroundOffset.fY-foregroundOffset.fY));
SkRect srcRect;
src.getBounds(&srcRect);
GrPaint paint;
paint.addColorTextureEffect(foregroundTex, foregroundMatrix);
paint.addColorEffect(xferEffect)->unref();
context->drawRect(paint, srcRect);
offset->fX = backgroundOffset.fX;
offset->fY = backgroundOffset.fY;
WrapTexture(dst, src.width(), src.height(), result);
return true;
}
bool SkXfermodeImageFilter::filterImageGPU(Proxy* proxy,
const SkBitmap& src,
const Context& ctx,
SkBitmap* result,
SkIPoint* offset) const {
SkBitmap background = src;
SkIPoint backgroundOffset = SkIPoint::Make(0, 0);
if (this->getInput(0) &&
!this->getInput(0)->getInputResultGPU(proxy, src, ctx, &background, &backgroundOffset)) {
return this->onFilterImage(proxy, src, ctx, result, offset);
}
GrTexture* backgroundTex = background.getTexture();
if (NULL == backgroundTex) {
SkASSERT(false);
return false;
}
SkBitmap foreground = src;
SkIPoint foregroundOffset = SkIPoint::Make(0, 0);
if (this->getInput(1) &&
!this->getInput(1)->getInputResultGPU(proxy, src, ctx, &foreground, &foregroundOffset)) {
return this->onFilterImage(proxy, src, ctx, result, offset);
}
GrTexture* foregroundTex = foreground.getTexture();
GrContext* context = foregroundTex->getContext();
GrFragmentProcessor* xferProcessor = NULL;
GrSurfaceDesc desc;
desc.fFlags = kRenderTarget_GrSurfaceFlag;
desc.fWidth = src.width();
desc.fHeight = src.height();
desc.fConfig = kSkia8888_GrPixelConfig;
SkAutoTUnref<GrTexture> dst(context->textureProvider()->refScratchTexture(
desc, GrTextureProvider::kApprox_ScratchTexMatch));
if (!dst) {
return false;
}
GrPaint paint;
if (!fMode || !fMode->asFragmentProcessor(&xferProcessor, paint.getProcessorDataManager(),
backgroundTex)) {
// canFilterImageGPU() should've taken care of this
SkASSERT(false);
return false;
}
SkMatrix foregroundMatrix = GrCoordTransform::MakeDivByTextureWHMatrix(foregroundTex);
foregroundMatrix.preTranslate(SkIntToScalar(backgroundOffset.fX-foregroundOffset.fX),
SkIntToScalar(backgroundOffset.fY-foregroundOffset.fY));
SkRect srcRect;
src.getBounds(&srcRect);
SkAutoTUnref<GrFragmentProcessor> foregroundDomain(GrTextureDomainEffect::Create(
paint.getProcessorDataManager(),
foregroundTex, foregroundMatrix,
GrTextureDomain::MakeTexelDomain(foregroundTex, foreground.bounds()),
GrTextureDomain::kDecal_Mode,
GrTextureParams::kNone_FilterMode)
);
paint.addColorProcessor(foregroundDomain.get());
paint.addColorProcessor(xferProcessor)->unref();
GrDrawContext* drawContext = context->drawContext();
if (!drawContext) {
return false;
}
drawContext->drawRect(dst->asRenderTarget(), GrClip::WideOpen(), paint,
SkMatrix::I(), srcRect);
offset->fX = backgroundOffset.fX;
offset->fY = backgroundOffset.fY;
WrapTexture(dst, src.width(), src.height(), result);
return true;
}
SkPDFImageShader* SkPDFImageShader::Create(
SkPDFCanon* canon,
SkScalar dpi,
SkAutoTDelete<SkPDFShader::State>* autoState) {
const SkPDFShader::State& state = **autoState;
state.fImage.lockPixels();
// The image shader pattern cell will be drawn into a separate device
// in pattern cell space (no scaling on the bitmap, though there may be
// translations so that all content is in the device, coordinates > 0).
// Map clip bounds to shader space to ensure the device is large enough
// to handle fake clamping.
SkMatrix finalMatrix = state.fCanvasTransform;
finalMatrix.preConcat(state.fShaderTransform);
SkRect deviceBounds;
deviceBounds.set(state.fBBox);
if (!inverse_transform_bbox(finalMatrix, &deviceBounds)) {
return NULL;
}
const SkBitmap* image = &state.fImage;
SkRect bitmapBounds;
image->getBounds(&bitmapBounds);
// For tiling modes, the bounds should be extended to include the bitmap,
// otherwise the bitmap gets clipped out and the shader is empty and awful.
// For clamp modes, we're only interested in the clip region, whether
// or not the main bitmap is in it.
SkShader::TileMode tileModes[2];
tileModes[0] = state.fImageTileModes[0];
tileModes[1] = state.fImageTileModes[1];
if (tileModes[0] != SkShader::kClamp_TileMode ||
tileModes[1] != SkShader::kClamp_TileMode) {
deviceBounds.join(bitmapBounds);
}
SkISize size = SkISize::Make(SkScalarRoundToInt(deviceBounds.width()),
SkScalarRoundToInt(deviceBounds.height()));
SkAutoTUnref<SkPDFDevice> patternDevice(
SkPDFDevice::CreateUnflipped(size, dpi, canon));
SkCanvas canvas(patternDevice.get());
SkRect patternBBox;
image->getBounds(&patternBBox);
// Translate the canvas so that the bitmap origin is at (0, 0).
canvas.translate(-deviceBounds.left(), -deviceBounds.top());
patternBBox.offset(-deviceBounds.left(), -deviceBounds.top());
// Undo the translation in the final matrix
finalMatrix.preTranslate(deviceBounds.left(), deviceBounds.top());
// If the bitmap is out of bounds (i.e. clamp mode where we only see the
// stretched sides), canvas will clip this out and the extraneous data
// won't be saved to the PDF.
canvas.drawBitmap(*image, 0, 0);
SkScalar width = SkIntToScalar(image->width());
SkScalar height = SkIntToScalar(image->height());
// Tiling is implied. First we handle mirroring.
if (tileModes[0] == SkShader::kMirror_TileMode) {
SkMatrix xMirror;
xMirror.setScale(-1, 1);
xMirror.postTranslate(2 * width, 0);
drawBitmapMatrix(&canvas, *image, xMirror);
patternBBox.fRight += width;
}
if (tileModes[1] == SkShader::kMirror_TileMode) {
SkMatrix yMirror;
yMirror.setScale(SK_Scalar1, -SK_Scalar1);
yMirror.postTranslate(0, 2 * height);
drawBitmapMatrix(&canvas, *image, yMirror);
patternBBox.fBottom += height;
}
if (tileModes[0] == SkShader::kMirror_TileMode &&
tileModes[1] == SkShader::kMirror_TileMode) {
SkMatrix mirror;
mirror.setScale(-1, -1);
mirror.postTranslate(2 * width, 2 * height);
drawBitmapMatrix(&canvas, *image, mirror);
}
// Then handle Clamping, which requires expanding the pattern canvas to
// cover the entire surfaceBBox.
// If both x and y are in clamp mode, we start by filling in the corners.
// (Which are just a rectangles of the corner colors.)
if (tileModes[0] == SkShader::kClamp_TileMode &&
tileModes[1] == SkShader::kClamp_TileMode) {
SkPaint paint;
SkRect rect;
rect = SkRect::MakeLTRB(deviceBounds.left(), deviceBounds.top(), 0, 0);
if (!rect.isEmpty()) {
paint.setColor(image->getColor(0, 0));
canvas.drawRect(rect, paint);
}
rect = SkRect::MakeLTRB(width, deviceBounds.top(),
deviceBounds.right(), 0);
if (!rect.isEmpty()) {
paint.setColor(image->getColor(image->width() - 1, 0));
canvas.drawRect(rect, paint);
}
rect = SkRect::MakeLTRB(width, height,
deviceBounds.right(), deviceBounds.bottom());
if (!rect.isEmpty()) {
paint.setColor(image->getColor(image->width() - 1,
image->height() - 1));
canvas.drawRect(rect, paint);
}
rect = SkRect::MakeLTRB(deviceBounds.left(), height,
0, deviceBounds.bottom());
if (!rect.isEmpty()) {
paint.setColor(image->getColor(0, image->height() - 1));
canvas.drawRect(rect, paint);
}
}
// Then expand the left, right, top, then bottom.
if (tileModes[0] == SkShader::kClamp_TileMode) {
SkIRect subset = SkIRect::MakeXYWH(0, 0, 1, image->height());
if (deviceBounds.left() < 0) {
SkBitmap left;
SkAssertResult(image->extractSubset(&left, subset));
SkMatrix leftMatrix;
leftMatrix.setScale(-deviceBounds.left(), 1);
leftMatrix.postTranslate(deviceBounds.left(), 0);
drawBitmapMatrix(&canvas, left, leftMatrix);
if (tileModes[1] == SkShader::kMirror_TileMode) {
leftMatrix.postScale(SK_Scalar1, -SK_Scalar1);
leftMatrix.postTranslate(0, 2 * height);
drawBitmapMatrix(&canvas, left, leftMatrix);
}
patternBBox.fLeft = 0;
}
if (deviceBounds.right() > width) {
SkBitmap right;
subset.offset(image->width() - 1, 0);
SkAssertResult(image->extractSubset(&right, subset));
SkMatrix rightMatrix;
rightMatrix.setScale(deviceBounds.right() - width, 1);
rightMatrix.postTranslate(width, 0);
drawBitmapMatrix(&canvas, right, rightMatrix);
if (tileModes[1] == SkShader::kMirror_TileMode) {
rightMatrix.postScale(SK_Scalar1, -SK_Scalar1);
rightMatrix.postTranslate(0, 2 * height);
drawBitmapMatrix(&canvas, right, rightMatrix);
}
patternBBox.fRight = deviceBounds.width();
}
}
if (tileModes[1] == SkShader::kClamp_TileMode) {
SkIRect subset = SkIRect::MakeXYWH(0, 0, image->width(), 1);
if (deviceBounds.top() < 0) {
SkBitmap top;
SkAssertResult(image->extractSubset(&top, subset));
SkMatrix topMatrix;
topMatrix.setScale(SK_Scalar1, -deviceBounds.top());
topMatrix.postTranslate(0, deviceBounds.top());
drawBitmapMatrix(&canvas, top, topMatrix);
if (tileModes[0] == SkShader::kMirror_TileMode) {
topMatrix.postScale(-1, 1);
topMatrix.postTranslate(2 * width, 0);
drawBitmapMatrix(&canvas, top, topMatrix);
}
patternBBox.fTop = 0;
}
if (deviceBounds.bottom() > height) {
SkBitmap bottom;
subset.offset(0, image->height() - 1);
SkAssertResult(image->extractSubset(&bottom, subset));
SkMatrix bottomMatrix;
bottomMatrix.setScale(SK_Scalar1, deviceBounds.bottom() - height);
bottomMatrix.postTranslate(0, height);
drawBitmapMatrix(&canvas, bottom, bottomMatrix);
if (tileModes[0] == SkShader::kMirror_TileMode) {
bottomMatrix.postScale(-1, 1);
bottomMatrix.postTranslate(2 * width, 0);
drawBitmapMatrix(&canvas, bottom, bottomMatrix);
}
patternBBox.fBottom = deviceBounds.height();
}
}
// Put the canvas into the pattern stream (fContent).
SkAutoTDelete<SkStreamAsset> content(patternDevice->content());
SkPDFImageShader* imageShader =
SkNEW_ARGS(SkPDFImageShader, (autoState->detach()));
imageShader->setData(content.get());
SkAutoTUnref<SkPDFDict> resourceDict(
patternDevice->createResourceDict());
populate_tiling_pattern_dict(imageShader, patternBBox,
resourceDict.get(), finalMatrix);
imageShader->fShaderState->fImage.unlockPixels();
canon->addImageShader(imageShader);
return imageShader;
}
void SkBitmapDevice::drawBitmapRect(const SkDraw& draw, const SkBitmap& bitmap,
const SkRect* src, const SkRect& dst,
const SkPaint& paint,
SkCanvas::DrawBitmapRectFlags flags) {
SkMatrix matrix;
SkRect bitmapBounds, tmpSrc, tmpDst;
SkBitmap tmpBitmap;
bitmapBounds.isetWH(bitmap.width(), bitmap.height());
// Compute matrix from the two rectangles
if (src) {
tmpSrc = *src;
} else {
tmpSrc = bitmapBounds;
}
matrix.setRectToRect(tmpSrc, dst, SkMatrix::kFill_ScaleToFit);
const SkRect* dstPtr = &dst;
const SkBitmap* bitmapPtr = &bitmap;
// clip the tmpSrc to the bounds of the bitmap, and recompute dstRect if
// needed (if the src was clipped). No check needed if src==null.
if (src) {
if (!bitmapBounds.contains(*src)) {
if (!tmpSrc.intersect(bitmapBounds)) {
return; // nothing to draw
}
// recompute dst, based on the smaller tmpSrc
matrix.mapRect(&tmpDst, tmpSrc);
dstPtr = &tmpDst;
}
// since we may need to clamp to the borders of the src rect within
// the bitmap, we extract a subset.
SkIRect srcIR;
tmpSrc.roundOut(&srcIR);
if (!bitmap.extractSubset(&tmpBitmap, srcIR)) {
return;
}
bitmapPtr = &tmpBitmap;
// Since we did an extract, we need to adjust the matrix accordingly
SkScalar dx = 0, dy = 0;
if (srcIR.fLeft > 0) {
dx = SkIntToScalar(srcIR.fLeft);
}
if (srcIR.fTop > 0) {
dy = SkIntToScalar(srcIR.fTop);
}
if (dx || dy) {
matrix.preTranslate(dx, dy);
}
SkRect extractedBitmapBounds;
extractedBitmapBounds.isetWH(bitmapPtr->width(), bitmapPtr->height());
if (extractedBitmapBounds == tmpSrc) {
// no fractional part in src, we can just call drawBitmap
goto USE_DRAWBITMAP;
}
} else {
USE_DRAWBITMAP:
// We can go faster by just calling drawBitmap, which will concat the
// matrix with the CTM, and try to call drawSprite if it can. If not,
// it will make a shader and call drawRect, as we do below.
this->drawBitmap(draw, *bitmapPtr, matrix, paint);
return;
}
// construct a shader, so we can call drawRect with the dst
SkShader* s = SkShader::CreateBitmapShader(*bitmapPtr,
SkShader::kClamp_TileMode,
SkShader::kClamp_TileMode,
&matrix);
if (NULL == s) {
return;
}
SkPaint paintWithShader(paint);
paintWithShader.setStyle(SkPaint::kFill_Style);
paintWithShader.setShader(s)->unref();
// Call ourself, in case the subclass wanted to share this setup code
// but handle the drawRect code themselves.
this->drawRect(draw, *dstPtr, paintWithShader);
}
sk_sp<SkSpecialImage> SkXfermodeImageFilter::filterImageGPU(SkSpecialImage* source,
sk_sp<SkSpecialImage> background,
const SkIPoint& backgroundOffset,
sk_sp<SkSpecialImage> foreground,
const SkIPoint& foregroundOffset,
const SkIRect& bounds) const {
SkASSERT(source->isTextureBacked());
GrContext* context = source->getContext();
sk_sp<GrTexture> backgroundTex, foregroundTex;
if (background) {
backgroundTex = background->asTextureRef(context);
}
if (foreground) {
foregroundTex = foreground->asTextureRef(context);
}
GrPaint paint;
// SRGBTODO: AllowSRGBInputs?
sk_sp<GrFragmentProcessor> bgFP;
if (backgroundTex) {
SkMatrix backgroundMatrix;
backgroundMatrix.setIDiv(backgroundTex->width(), backgroundTex->height());
backgroundMatrix.preTranslate(SkIntToScalar(-backgroundOffset.fX),
SkIntToScalar(-backgroundOffset.fY));
bgFP = GrTextureDomainEffect::Make(
backgroundTex.get(), nullptr, backgroundMatrix,
GrTextureDomain::MakeTexelDomain(backgroundTex.get(),
background->subset()),
GrTextureDomain::kDecal_Mode,
GrTextureParams::kNone_FilterMode);
} else {
bgFP = GrConstColorProcessor::Make(GrColor_TRANSPARENT_BLACK,
GrConstColorProcessor::kIgnore_InputMode);
}
if (foregroundTex) {
SkMatrix foregroundMatrix;
foregroundMatrix.setIDiv(foregroundTex->width(), foregroundTex->height());
foregroundMatrix.preTranslate(SkIntToScalar(-foregroundOffset.fX),
SkIntToScalar(-foregroundOffset.fY));
sk_sp<GrFragmentProcessor> foregroundFP;
foregroundFP = GrTextureDomainEffect::Make(
foregroundTex.get(), nullptr, foregroundMatrix,
GrTextureDomain::MakeTexelDomain(foregroundTex.get(),
foreground->subset()),
GrTextureDomain::kDecal_Mode,
GrTextureParams::kNone_FilterMode);
paint.addColorFragmentProcessor(std::move(foregroundFP));
// A null fMode is interpreted to mean kSrcOver_Mode (to match raster).
SkAutoTUnref<SkXfermode> mode(SkSafeRef(fMode.get()));
if (!mode) {
// It would be awesome to use SkXfermode::Create here but it knows better
// than us and won't return a kSrcOver_Mode SkXfermode. That means we
// have to get one the hard way.
struct ProcCoeff rec;
rec.fProc = SkXfermode::GetProc(SkXfermode::kSrcOver_Mode);
SkXfermode::ModeAsCoeff(SkXfermode::kSrcOver_Mode, &rec.fSC, &rec.fDC);
mode.reset(new SkProcCoeffXfermode(rec, SkXfermode::kSrcOver_Mode));
}
sk_sp<GrFragmentProcessor> xferFP(
mode->makeFragmentProcessorForImageFilter(std::move(bgFP)));
// A null 'xferFP' here means kSrc_Mode was used in which case we can just proceed
if (xferFP) {
paint.addColorFragmentProcessor(std::move(xferFP));
}
} else {
paint.addColorFragmentProcessor(std::move(bgFP));
}
paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
sk_sp<GrDrawContext> drawContext(context->makeDrawContext(SkBackingFit::kApprox,
bounds.width(), bounds.height(),
kSkia8888_GrPixelConfig,
sk_ref_sp(source->getColorSpace())));
if (!drawContext) {
return nullptr;
}
SkMatrix matrix;
matrix.setTranslate(SkIntToScalar(-bounds.left()), SkIntToScalar(-bounds.top()));
drawContext->drawRect(GrNoClip(), paint, matrix, SkRect::Make(bounds));
return SkSpecialImage::MakeFromGpu(SkIRect::MakeWH(bounds.width(), bounds.height()),
kNeedNewImageUniqueID_SpecialImage,
drawContext->asTexture(),
sk_ref_sp(drawContext->getColorSpace()));
}
bool SVGPaintServerGradient::setup(GraphicsContext*& context,
const RenderObject* object,
SVGPaintTargetType type,
bool isPaintingText) const
{
m_ownerElement->buildGradient();
RenderStyle* style = object->style();
bool isFilled =
(type & ApplyToFillTargetType) &&
style->svgStyle()->hasFill();
bool isStroked =
(type & ApplyToStrokeTargetType) &&
style->svgStyle()->hasStroke();
if(!gradientStops().size())
return false;
if(gradientStops().size()==1) {
context->setFillColor(gradientStops()[0].second);
return true;
}
// Create a gradient builder helper to generate the data
// we'll need to provide Skia
SkiaGradientBuilder builder(gradientStops(),
isFilled ? style->svgStyle()->fillOpacity() :
style->svgStyle()->strokeOpacity());
SkShader::TileMode tile_mode;
// Convert SVG spread modes to Skia tile modes
switch(spreadMethod())
{
default:
case SPREADMETHOD_PAD:
tile_mode = SkShader::kClamp_TileMode; break;
case SPREADMETHOD_REFLECT:
tile_mode = SkShader::kMirror_TileMode; break;
case SPREADMETHOD_REPEAT:
tile_mode = SkShader::kRepeat_TileMode; break;
}
SkShader* shader = NULL;
SkMatrix matrix;
// Calculate a matrix to transform a gradient to fit the bounding box
if (boundingBoxMode()) {
matrix.reset();
SkRect rc = context->getBoundingBoxForCurrentPath(true);
matrix.preTranslate(rc.fLeft, rc.fTop);
matrix.preScale(rc.width(), rc.height());
matrix.preConcat(gradientTransform());
} else
matrix = gradientTransform();
if (this->type() == LinearGradientPaintServer) {
const SVGPaintServerLinearGradient* linear =
static_cast<const SVGPaintServerLinearGradient*>(this);
SkPoint pts[2];
pts[0].fX = linear->gradientStart().x();
pts[0].fY = linear->gradientStart().y();
pts[1].fX = linear->gradientEnd().x();
pts[1].fY = linear->gradientEnd().y();
shader = SkGradientShader::CreateLinear(pts,
builder.colors(), builder.pos(), builder.count(), tile_mode);
} else if (this->type() == RadialGradientPaintServer) {
const SVGPaintServerRadialGradient* radial =
static_cast<const SVGPaintServerRadialGradient*>(this);
SkPoint center;
SkScalar radius;
center.fX = radial->gradientCenter().x();
center.fY = radial->gradientCenter().y();
radius = radial->gradientRadius();
shader = SkGradientShader::CreateRadial(
center, radius, builder.colors(), builder.pos(),
builder.count(), tile_mode);
} else {
return false;
}
if (isPaintingText) {
if (isFilled) {
context->setTextDrawingMode(cTextFill);
}
if (isStroked) {
context->setTextDrawingMode(cTextStroke);
}
}
if (isStroked) {
applyStrokeStyleToContext(context, style, object);
}
if (shader) {
shader->setLocalMatrix(matrix);
context->platformContext()->setGradient(shader);
return true;
}
return false;
}
sk_sp<SkShader> Gradient::createShader(const SkMatrix& localMatrix) {
sortStopsIfNecessary();
ASSERT(m_stopsSorted);
size_t countUsed = totalStopsNeeded(m_stops.data(), m_stops.size());
ASSERT(countUsed >= 2);
ASSERT(countUsed >= m_stops.size());
ColorStopOffsetVector pos(countUsed);
ColorStopColorVector colors(countUsed);
fillStops(m_stops.data(), m_stops.size(), pos, colors);
SkShader::TileMode tile = SkShader::kClamp_TileMode;
switch (m_spreadMethod) {
case SpreadMethodReflect:
tile = SkShader::kMirror_TileMode;
break;
case SpreadMethodRepeat:
tile = SkShader::kRepeat_TileMode;
break;
case SpreadMethodPad:
tile = SkShader::kClamp_TileMode;
break;
}
sk_sp<SkShader> shader;
uint32_t shouldDrawInPMColorSpace =
m_drawInPMColorSpace ? SkGradientShader::kInterpolateColorsInPremul_Flag
: 0;
if (m_radial) {
SkMatrix adjustedLocalMatrix = localMatrix;
if (m_aspectRatio != 1) {
// CSS3 elliptical gradients: apply the elliptical scaling at the
// gradient center point.
adjustedLocalMatrix.preTranslate(m_p0.x(), m_p0.y());
adjustedLocalMatrix.preScale(1, 1 / m_aspectRatio);
adjustedLocalMatrix.preTranslate(-m_p0.x(), -m_p0.y());
ASSERT(m_p0 == m_p1);
}
// Since the two-point radial gradient is slower than the plain radial,
// only use it if we have to.
if (m_p0 == m_p1 && m_r0 <= 0.0f) {
shader = SkGradientShader::MakeRadial(
m_p1.data(), m_r1, colors.data(), pos.data(),
static_cast<int>(countUsed), tile, shouldDrawInPMColorSpace,
&adjustedLocalMatrix);
} else {
// The radii we give to Skia must be positive. If we're given a
// negative radius, ask for zero instead.
SkScalar radius0 = m_r0 >= 0.0f ? WebCoreFloatToSkScalar(m_r0) : 0;
SkScalar radius1 = m_r1 >= 0.0f ? WebCoreFloatToSkScalar(m_r1) : 0;
shader = SkGradientShader::MakeTwoPointConical(
m_p0.data(), radius0, m_p1.data(), radius1, colors.data(), pos.data(),
static_cast<int>(countUsed), tile, shouldDrawInPMColorSpace,
&adjustedLocalMatrix);
}
} else {
SkPoint pts[2] = {m_p0.data(), m_p1.data()};
shader = SkGradientShader::MakeLinear(
pts, colors.data(), pos.data(), static_cast<int>(countUsed), tile,
shouldDrawInPMColorSpace, &localMatrix);
}
if (!shader) {
// use last color, since our "geometry" was degenerate (e.g. radius==0)
shader = SkShader::MakeColorShader(colors[countUsed - 1]);
}
return shader;
}
static void
SetPaintPattern(SkPaint& aPaint, const Pattern& aPattern, TempBitmap& aTmpBitmap,
Float aAlpha = 1.0)
{
switch (aPattern.GetType()) {
case PatternType::COLOR: {
Color color = static_cast<const ColorPattern&>(aPattern).mColor;
aPaint.setColor(ColorToSkColor(color, aAlpha));
break;
}
case PatternType::LINEAR_GRADIENT: {
const LinearGradientPattern& pat = static_cast<const LinearGradientPattern&>(aPattern);
GradientStopsSkia *stops = static_cast<GradientStopsSkia*>(pat.mStops.get());
SkShader::TileMode mode = ExtendModeToTileMode(stops->mExtendMode);
if (stops->mCount >= 2) {
SkPoint points[2];
points[0] = SkPoint::Make(SkFloatToScalar(pat.mBegin.x), SkFloatToScalar(pat.mBegin.y));
points[1] = SkPoint::Make(SkFloatToScalar(pat.mEnd.x), SkFloatToScalar(pat.mEnd.y));
SkShader* shader = SkGradientShader::CreateLinear(points,
&stops->mColors.front(),
&stops->mPositions.front(),
stops->mCount,
mode);
if (shader) {
SkMatrix mat;
GfxMatrixToSkiaMatrix(pat.mMatrix, mat);
SkShader* matrixShader = SkShader::CreateLocalMatrixShader(shader, mat);
SkSafeUnref(shader);
SkSafeUnref(aPaint.setShader(matrixShader));
}
} else {
aPaint.setColor(SkColorSetARGB(0, 0, 0, 0));
}
break;
}
case PatternType::RADIAL_GRADIENT: {
const RadialGradientPattern& pat = static_cast<const RadialGradientPattern&>(aPattern);
GradientStopsSkia *stops = static_cast<GradientStopsSkia*>(pat.mStops.get());
SkShader::TileMode mode = ExtendModeToTileMode(stops->mExtendMode);
if (stops->mCount >= 2) {
SkPoint points[2];
points[0] = SkPoint::Make(SkFloatToScalar(pat.mCenter1.x), SkFloatToScalar(pat.mCenter1.y));
points[1] = SkPoint::Make(SkFloatToScalar(pat.mCenter2.x), SkFloatToScalar(pat.mCenter2.y));
SkShader* shader = SkGradientShader::CreateTwoPointConical(points[0],
SkFloatToScalar(pat.mRadius1),
points[1],
SkFloatToScalar(pat.mRadius2),
&stops->mColors.front(),
&stops->mPositions.front(),
stops->mCount,
mode);
if (shader) {
SkMatrix mat;
GfxMatrixToSkiaMatrix(pat.mMatrix, mat);
SkShader* matrixShader = SkShader::CreateLocalMatrixShader(shader, mat);
SkSafeUnref(shader);
SkSafeUnref(aPaint.setShader(matrixShader));
}
} else {
aPaint.setColor(SkColorSetARGB(0, 0, 0, 0));
}
break;
}
case PatternType::SURFACE: {
const SurfacePattern& pat = static_cast<const SurfacePattern&>(aPattern);
aTmpBitmap = GetBitmapForSurface(pat.mSurface);
SkBitmap& bitmap = aTmpBitmap.mBitmap;
SkMatrix mat;
GfxMatrixToSkiaMatrix(pat.mMatrix, mat);
if (!pat.mSamplingRect.IsEmpty()) {
SkIRect rect = IntRectToSkIRect(pat.mSamplingRect);
bitmap.extractSubset(&bitmap, rect);
mat.preTranslate(rect.x(), rect.y());
}
SkShader::TileMode mode = ExtendModeToTileMode(pat.mExtendMode);
SkShader* shader = SkShader::CreateBitmapShader(bitmap, mode, mode);
SkShader* matrixShader = SkShader::CreateLocalMatrixShader(shader, mat);
SkSafeUnref(shader);
SkSafeUnref(aPaint.setShader(matrixShader));
if (pat.mFilter == Filter::POINT) {
aPaint.setFilterLevel(SkPaint::kNone_FilterLevel);
}
break;
}
}
}
bool SkXfermodeImageFilter::filterImageGPU(Proxy* proxy,
const SkBitmap& src,
const Context& ctx,
SkBitmap* result,
SkIPoint* offset) const {
SkBitmap background = src;
SkIPoint backgroundOffset = SkIPoint::Make(0, 0);
if (!this->filterInputGPU(0, proxy, src, ctx, &background, &backgroundOffset)) {
return false;
}
GrTexture* backgroundTex = background.getTexture();
if (nullptr == backgroundTex) {
SkASSERT(false);
return false;
}
SkBitmap foreground = src;
SkIPoint foregroundOffset = SkIPoint::Make(0, 0);
if (!this->filterInputGPU(1, proxy, src, ctx, &foreground, &foregroundOffset)) {
return false;
}
GrTexture* foregroundTex = foreground.getTexture();
GrContext* context = foregroundTex->getContext();
SkIRect bounds = background.bounds().makeOffset(backgroundOffset.x(), backgroundOffset.y());
bounds.join(foreground.bounds().makeOffset(foregroundOffset.x(), foregroundOffset.y()));
if (bounds.isEmpty()) {
return false;
}
const GrFragmentProcessor* xferFP = nullptr;
GrSurfaceDesc desc;
desc.fFlags = kRenderTarget_GrSurfaceFlag;
desc.fWidth = bounds.width();
desc.fHeight = bounds.height();
desc.fConfig = kSkia8888_GrPixelConfig;
SkAutoTUnref<GrTexture> dst(context->textureProvider()->createApproxTexture(desc));
if (!dst) {
return false;
}
GrPaint paint;
SkMatrix backgroundMatrix;
backgroundMatrix.setIDiv(backgroundTex->width(), backgroundTex->height());
backgroundMatrix.preTranslate(SkIntToScalar(-backgroundOffset.fX),
SkIntToScalar(-backgroundOffset.fY));
SkAutoTUnref<const GrFragmentProcessor> bgFP(GrTextureDomainEffect::Create(
backgroundTex, backgroundMatrix,
GrTextureDomain::MakeTexelDomain(backgroundTex, background.bounds()),
GrTextureDomain::kDecal_Mode,
GrTextureParams::kNone_FilterMode)
);
if (!fMode || !fMode->asFragmentProcessor(&xferFP, bgFP)) {
// canFilterImageGPU() should've taken care of this
SkASSERT(false);
return false;
}
SkMatrix foregroundMatrix;
foregroundMatrix.setIDiv(foregroundTex->width(), foregroundTex->height());
foregroundMatrix.preTranslate(SkIntToScalar(-foregroundOffset.fX),
SkIntToScalar(-foregroundOffset.fY));
SkAutoTUnref<const GrFragmentProcessor> foregroundFP(GrTextureDomainEffect::Create(
foregroundTex, foregroundMatrix,
GrTextureDomain::MakeTexelDomain(foregroundTex, foreground.bounds()),
GrTextureDomain::kDecal_Mode,
GrTextureParams::kNone_FilterMode)
);
paint.addColorFragmentProcessor(foregroundFP.get());
if (xferFP) {
paint.addColorFragmentProcessor(xferFP)->unref();
}
paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
SkAutoTUnref<GrDrawContext> drawContext(context->drawContext(dst->asRenderTarget()));
if (!drawContext) {
return false;
}
SkMatrix matrix;
matrix.setTranslate(SkIntToScalar(-bounds.left()), SkIntToScalar(-bounds.top()));
drawContext->drawRect(GrClip::WideOpen(), paint, matrix, SkRect::Make(bounds));
offset->fX = bounds.left();
offset->fY = bounds.top();
GrWrapTextureInBitmap(dst, bounds.width(), bounds.height(), false, result);
return true;
}
static SkMatrix make_div_and_translate_matrix(GrTexture* texture, int x, int y) {
SkMatrix matrix = GrCoordTransform::MakeDivByTextureWHMatrix(texture);
matrix.preTranslate(SkIntToScalar(x), SkIntToScalar(y));
return matrix;
}
static void preTranslate(JNIEnv* env, jobject clazz, jlong objHandle, jfloat dx, jfloat dy) {
SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
obj->preTranslate(dx, dy);
}
bool SkDisplacementMapEffect::filterImageGPU(Proxy* proxy, const SkBitmap& src, const Context& ctx,
SkBitmap* result, SkIPoint* offset) const {
SkBitmap colorBM = src;
SkIPoint colorOffset = SkIPoint::Make(0, 0);
if (getColorInput() && !getColorInput()->getInputResultGPU(proxy, src, ctx, &colorBM,
&colorOffset)) {
return false;
}
SkBitmap displacementBM = src;
SkIPoint displacementOffset = SkIPoint::Make(0, 0);
if (getDisplacementInput() &&
!getDisplacementInput()->getInputResultGPU(proxy, src, ctx, &displacementBM,
&displacementOffset)) {
return false;
}
SkIRect bounds;
// Since GrDisplacementMapEffect does bounds checking on color pixel access, we don't need to
// pad the color bitmap to bounds here.
if (!this->applyCropRect(ctx, colorBM, colorOffset, &bounds)) {
return false;
}
SkIRect displBounds;
if (!this->applyCropRect(ctx, proxy, displacementBM,
&displacementOffset, &displBounds, &displacementBM)) {
return false;
}
if (!bounds.intersect(displBounds)) {
return false;
}
GrTexture* color = colorBM.getTexture();
GrTexture* displacement = displacementBM.getTexture();
GrContext* context = color->getContext();
GrSurfaceDesc desc;
desc.fFlags = kRenderTarget_GrSurfaceFlag;
desc.fWidth = bounds.width();
desc.fHeight = bounds.height();
desc.fConfig = kSkia8888_GrPixelConfig;
SkAutoTUnref<GrTexture> dst(
context->refScratchTexture(desc, GrContext::kApprox_ScratchTexMatch));
if (!dst) {
return false;
}
SkVector scale = SkVector::Make(fScale, fScale);
ctx.ctm().mapVectors(&scale, 1);
GrPaint paint;
SkMatrix offsetMatrix = GrCoordTransform::MakeDivByTextureWHMatrix(displacement);
offsetMatrix.preTranslate(SkIntToScalar(colorOffset.fX - displacementOffset.fX),
SkIntToScalar(colorOffset.fY - displacementOffset.fY));
paint.addColorProcessor(
GrDisplacementMapEffect::Create(fXChannelSelector,
fYChannelSelector,
scale,
displacement,
offsetMatrix,
color,
colorBM.dimensions()))->unref();
SkIRect colorBounds = bounds;
colorBounds.offset(-colorOffset);
SkMatrix matrix;
matrix.setTranslate(-SkIntToScalar(colorBounds.x()),
-SkIntToScalar(colorBounds.y()));
context->drawRect(dst->asRenderTarget(), GrClip::WideOpen(), paint, matrix,
SkRect::Make(colorBounds));
offset->fX = bounds.left();
offset->fY = bounds.top();
WrapTexture(dst, bounds.width(), bounds.height(), result);
return true;
}
void SkBitmapDevice::drawBitmapRect(const SkDraw& draw, const SkBitmap& bitmap,
const SkRect* src, const SkRect& dst,
const SkPaint& paint, SkCanvas::SrcRectConstraint constraint) {
SkMatrix matrix;
SkRect bitmapBounds, tmpSrc, tmpDst;
SkBitmap tmpBitmap;
bitmapBounds.isetWH(bitmap.width(), bitmap.height());
// Compute matrix from the two rectangles
if (src) {
tmpSrc = *src;
} else {
tmpSrc = bitmapBounds;
}
matrix.setRectToRect(tmpSrc, dst, SkMatrix::kFill_ScaleToFit);
LogDrawScaleFactor(SkMatrix::Concat(*draw.fMatrix, matrix), paint.getFilterQuality());
const SkRect* dstPtr = &dst;
const SkBitmap* bitmapPtr = &bitmap;
// clip the tmpSrc to the bounds of the bitmap, and recompute dstRect if
// needed (if the src was clipped). No check needed if src==null.
if (src) {
if (!bitmapBounds.contains(*src)) {
if (!tmpSrc.intersect(bitmapBounds)) {
return; // nothing to draw
}
// recompute dst, based on the smaller tmpSrc
matrix.mapRect(&tmpDst, tmpSrc);
dstPtr = &tmpDst;
}
}
if (src && !src->contains(bitmapBounds) &&
SkCanvas::kFast_SrcRectConstraint == constraint &&
paint.getFilterQuality() != kNone_SkFilterQuality) {
// src is smaller than the bounds of the bitmap, and we are filtering, so we don't know
// how much more of the bitmap we need, so we can't use extractSubset or drawBitmap,
// but we must use a shader w/ dst bounds (which can access all of the bitmap needed).
goto USE_SHADER;
}
if (src) {
// since we may need to clamp to the borders of the src rect within
// the bitmap, we extract a subset.
const SkIRect srcIR = tmpSrc.roundOut();
if (!bitmap.extractSubset(&tmpBitmap, srcIR)) {
return;
}
bitmapPtr = &tmpBitmap;
// Since we did an extract, we need to adjust the matrix accordingly
SkScalar dx = 0, dy = 0;
if (srcIR.fLeft > 0) {
dx = SkIntToScalar(srcIR.fLeft);
}
if (srcIR.fTop > 0) {
dy = SkIntToScalar(srcIR.fTop);
}
if (dx || dy) {
matrix.preTranslate(dx, dy);
}
SkRect extractedBitmapBounds;
extractedBitmapBounds.isetWH(bitmapPtr->width(), bitmapPtr->height());
if (extractedBitmapBounds == tmpSrc) {
// no fractional part in src, we can just call drawBitmap
goto USE_DRAWBITMAP;
}
} else {
USE_DRAWBITMAP:
// We can go faster by just calling drawBitmap, which will concat the
// matrix with the CTM, and try to call drawSprite if it can. If not,
// it will make a shader and call drawRect, as we do below.
if (CanApplyDstMatrixAsCTM(matrix, paint)) {
draw.drawBitmap(*bitmapPtr, matrix, dstPtr, paint);
return;
}
}
USE_SHADER:
// Since the shader need only live for our stack-frame, pass in a custom allocator. This
// can save malloc calls, and signals to SkMakeBitmapShader to not try to copy the bitmap
// if its mutable, since that precaution is not needed (give the short lifetime of the shader).
SkTBlitterAllocator allocator;
// construct a shader, so we can call drawRect with the dst
auto s = SkMakeBitmapShader(*bitmapPtr, SkShader::kClamp_TileMode, SkShader::kClamp_TileMode,
&matrix, kNever_SkCopyPixelsMode, &allocator);
if (!s) {
return;
}
// we deliberately add a ref, since the allocator wants to be the last owner
s.get()->ref();
SkPaint paintWithShader(paint);
paintWithShader.setStyle(SkPaint::kFill_Style);
paintWithShader.setShader(s);
// Call ourself, in case the subclass wanted to share this setup code
// but handle the drawRect code themselves.
this->drawRect(draw, *dstPtr, paintWithShader);
}
bool SkXfermodeImageFilter::filterImageGPUDeprecated(Proxy* proxy,
const SkBitmap& src,
const Context& ctx,
SkBitmap* result,
SkIPoint* offset) const {
GrContext* context = nullptr;
SkBitmap background = src;
SkIPoint backgroundOffset = SkIPoint::Make(0, 0);
if (!this->filterInputGPUDeprecated(0, proxy, src, ctx, &background, &backgroundOffset)) {
background.reset();
}
GrTexture* backgroundTex = background.getTexture();
if (backgroundTex) {
context = backgroundTex->getContext();
}
SkBitmap foreground = src;
SkIPoint foregroundOffset = SkIPoint::Make(0, 0);
if (!this->filterInputGPUDeprecated(1, proxy, src, ctx, &foreground, &foregroundOffset)) {
foreground.reset();
}
GrTexture* foregroundTex = foreground.getTexture();
if (foregroundTex) {
context = foregroundTex->getContext();
}
if (!context) {
return false;
}
SkIRect bounds = background.bounds().makeOffset(backgroundOffset.x(), backgroundOffset.y());
bounds.join(foreground.bounds().makeOffset(foregroundOffset.x(), foregroundOffset.y()));
if (bounds.isEmpty()) {
return false;
}
GrSurfaceDesc desc;
desc.fFlags = kRenderTarget_GrSurfaceFlag;
desc.fWidth = bounds.width();
desc.fHeight = bounds.height();
desc.fConfig = kSkia8888_GrPixelConfig;
SkAutoTUnref<GrTexture> dst(context->textureProvider()->createApproxTexture(desc));
if (!dst) {
return false;
}
GrPaint paint;
SkAutoTUnref<const GrFragmentProcessor> bgFP;
if (backgroundTex) {
SkMatrix backgroundMatrix;
backgroundMatrix.setIDiv(backgroundTex->width(), backgroundTex->height());
backgroundMatrix.preTranslate(SkIntToScalar(-backgroundOffset.fX),
SkIntToScalar(-backgroundOffset.fY));
bgFP.reset(GrTextureDomainEffect::Create(
backgroundTex, backgroundMatrix,
GrTextureDomain::MakeTexelDomain(backgroundTex, background.bounds()),
GrTextureDomain::kDecal_Mode,
GrTextureParams::kNone_FilterMode));
} else {
bgFP.reset(GrConstColorProcessor::Create(GrColor_TRANSPARENT_BLACK,
GrConstColorProcessor::kIgnore_InputMode));
}
if (foregroundTex) {
SkMatrix foregroundMatrix;
foregroundMatrix.setIDiv(foregroundTex->width(), foregroundTex->height());
foregroundMatrix.preTranslate(SkIntToScalar(-foregroundOffset.fX),
SkIntToScalar(-foregroundOffset.fY));
SkAutoTUnref<const GrFragmentProcessor> foregroundFP;
foregroundFP.reset(GrTextureDomainEffect::Create(
foregroundTex, foregroundMatrix,
GrTextureDomain::MakeTexelDomain(foregroundTex, foreground.bounds()),
GrTextureDomain::kDecal_Mode,
GrTextureParams::kNone_FilterMode));
paint.addColorFragmentProcessor(foregroundFP.get());
// A null fMode is interpreted to mean kSrcOver_Mode (to match raster).
SkAutoTUnref<SkXfermode> mode(SkSafeRef(fMode.get()));
if (!mode) {
// It would be awesome to use SkXfermode::Create here but it knows better
// than us and won't return a kSrcOver_Mode SkXfermode. That means we
// have to get one the hard way.
struct ProcCoeff rec;
rec.fProc = SkXfermode::GetProc(SkXfermode::kSrcOver_Mode);
SkXfermode::ModeAsCoeff(SkXfermode::kSrcOver_Mode, &rec.fSC, &rec.fDC);
mode.reset(new SkProcCoeffXfermode(rec, SkXfermode::kSrcOver_Mode));
}
SkAutoTUnref<const GrFragmentProcessor> xferFP(mode->getFragmentProcessorForImageFilter(bgFP));
// A null 'xferFP' here means kSrc_Mode was used in which case we can just proceed
if (xferFP) {
paint.addColorFragmentProcessor(xferFP);
}
} else {
paint.addColorFragmentProcessor(bgFP);
}
paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
SkAutoTUnref<GrDrawContext> drawContext(context->drawContext(dst->asRenderTarget()));
if (!drawContext) {
return false;
}
SkMatrix matrix;
matrix.setTranslate(SkIntToScalar(-bounds.left()), SkIntToScalar(-bounds.top()));
drawContext->drawRect(GrClip::WideOpen(), paint, matrix, SkRect::Make(bounds));
offset->fX = bounds.left();
offset->fY = bounds.top();
GrWrapTextureInBitmap(dst, bounds.width(), bounds.height(), false, result);
return true;
}
bool SkXfermodeImageFilter::filterImageGPU(Proxy* proxy,
const SkBitmap& src,
const SkMatrix& ctm,
SkBitmap* result,
SkIPoint* offset) {
SkBitmap background;
SkIPoint backgroundOffset = SkIPoint::Make(0, 0);
if (!SkImageFilterUtils::GetInputResultGPU(getInput(0), proxy, src, ctm, &background,
&backgroundOffset)) {
return false;
}
GrTexture* backgroundTex = background.getTexture();
SkBitmap foreground;
SkIPoint foregroundOffset = SkIPoint::Make(0, 0);
if (!SkImageFilterUtils::GetInputResultGPU(getInput(1), proxy, src, ctm, &foreground,
&foregroundOffset)) {
return false;
}
GrTexture* foregroundTex = foreground.getTexture();
GrContext* context = foregroundTex->getContext();
GrEffectRef* xferEffect = NULL;
GrTextureDesc desc;
desc.fFlags = kRenderTarget_GrTextureFlagBit | kNoStencil_GrTextureFlagBit;
desc.fWidth = src.width();
desc.fHeight = src.height();
desc.fConfig = kSkia8888_GrPixelConfig;
GrAutoScratchTexture ast(context, desc);
SkAutoTUnref<GrTexture> dst(ast.detach());
GrContext::AutoRenderTarget art(context, dst->asRenderTarget());
SkXfermode::Coeff sm, dm;
if (!SkXfermode::AsNewEffectOrCoeff(fMode, &xferEffect, &sm, &dm, backgroundTex)) {
return false;
}
SkMatrix foregroundMatrix = GrEffect::MakeDivByTextureWHMatrix(foregroundTex);
foregroundMatrix.preTranslate(SkIntToScalar(backgroundOffset.fX-foregroundOffset.fX),
SkIntToScalar(backgroundOffset.fY-foregroundOffset.fY));
SkRect srcRect;
src.getBounds(&srcRect);
if (NULL != xferEffect) {
GrPaint paint;
paint.addColorTextureEffect(foregroundTex, foregroundMatrix);
paint.addColorEffect(xferEffect)->unref();
context->drawRect(paint, srcRect);
} else {
GrPaint backgroundPaint;
SkMatrix backgroundMatrix = GrEffect::MakeDivByTextureWHMatrix(backgroundTex);
backgroundPaint.addColorTextureEffect(backgroundTex, backgroundMatrix);
context->drawRect(backgroundPaint, srcRect);
GrPaint foregroundPaint;
foregroundPaint.setBlendFunc(sk_blend_to_grblend(sm), sk_blend_to_grblend(dm));
foregroundPaint.addColorTextureEffect(foregroundTex, foregroundMatrix);
context->drawRect(foregroundPaint, srcRect);
}
offset->fX += backgroundOffset.fX;
offset->fY += backgroundOffset.fY;
return SkImageFilterUtils::WrapTexture(dst, src.width(), src.height(), result);
}