static void generateMask(const SkMask& mask, const SkPath& path,
const SkMaskGamma::PreBlend& maskPreBlend) {
SkPaint paint;
int srcW = mask.fBounds.width();
int srcH = mask.fBounds.height();
int dstW = srcW;
int dstH = srcH;
int dstRB = mask.fRowBytes;
SkMatrix matrix;
matrix.setTranslate(-SkIntToScalar(mask.fBounds.fLeft),
-SkIntToScalar(mask.fBounds.fTop));
paint.setAntiAlias(SkMask::kBW_Format != mask.fFormat);
switch (mask.fFormat) {
case SkMask::kBW_Format:
dstRB = 0; // signals we need a copy
break;
case SkMask::kA8_Format:
break;
case SkMask::kLCD16_Format:
case SkMask::kLCD32_Format:
// TODO: trigger off LCD orientation
dstW = 4*dstW - 8;
matrix.setTranslate(-SkIntToScalar(mask.fBounds.fLeft + 1),
-SkIntToScalar(mask.fBounds.fTop));
matrix.postScale(SkIntToScalar(4), SK_Scalar1);
dstRB = 0; // signals we need a copy
break;
default:
SkDEBUGFAIL("unexpected mask format");
}
SkRasterClip clip;
clip.setRect(SkIRect::MakeWH(dstW, dstH));
const SkImageInfo info = SkImageInfo::MakeA8(dstW, dstH);
SkBitmap bm;
if (0 == dstRB) {
if (!bm.tryAllocPixels(info)) {
// can't allocate offscreen, so empty the mask and return
sk_bzero(mask.fImage, mask.computeImageSize());
return;
}
} else {
bm.installPixels(info, mask.fImage, dstRB);
}
sk_bzero(bm.getPixels(), bm.getSafeSize());
SkDraw draw;
draw.fRC = &clip;
draw.fClip = &clip.bwRgn();
draw.fMatrix = &matrix;
draw.fBitmap = &bm;
draw.drawPath(path, paint);
switch (mask.fFormat) {
case SkMask::kBW_Format:
packA8ToA1(mask, bm.getAddr8(0, 0), bm.rowBytes());
break;
case SkMask::kA8_Format:
if (maskPreBlend.isApplicable()) {
applyLUTToA8Mask(mask, maskPreBlend.fG);
}
break;
case SkMask::kLCD16_Format:
if (maskPreBlend.isApplicable()) {
pack4xHToLCD16<true>(bm, mask, maskPreBlend);
} else {
pack4xHToLCD16<false>(bm, mask, maskPreBlend);
}
break;
case SkMask::kLCD32_Format:
if (maskPreBlend.isApplicable()) {
pack4xHToLCD32<true>(bm, mask, maskPreBlend);
} else {
pack4xHToLCD32<false>(bm, mask, maskPreBlend);
}
break;
default:
break;
}
}
void onDraw(SkCanvas* canvas) override {
// We don't create pixels in an onOnceBeforeDraw() override because we want access to
// GrContext.
GrContext* context = canvas->getGrContext();
#if SK_SUPPORT_GPU
// Workaround for SampleApp.
if (GrTexture* tex = fBigTestPixels.fBitmap.getTexture()) {
if (tex->wasDestroyed()) {
fCreatedPixels = false;
}
}
#endif
bool madePixels = fCreatedPixels;
if (!madePixels) {
madePixels = gBleedRec[fBT].fPixelMaker(context, &fSmallTestPixels, kSmallTextureSize,
kSmallTextureSize);
madePixels &= gBleedRec[fBT].fPixelMaker(context, &fBigTestPixels, 2 * kMaxTileSize,
2 * kMaxTileSize);
fCreatedPixels = madePixels;
}
// Assume that if we coulnd't make the bitmap/image it's because it's a GPU test on a
// non-GPU backend.
if (!madePixels) {
skiagm::GM::DrawGpuOnlyMessage(canvas);
return;
}
fShader = gBleedRec[fBT].fShaderMaker();
canvas->clear(SK_ColorGRAY);
SkTDArray<SkMatrix> matrices;
// Draw with identity
*matrices.append() = SkMatrix::I();
// Draw with rotation and scale down in x, up in y.
SkMatrix m;
static const SkScalar kBottom = SkIntToScalar(kRow4Y + kBlockSize + kBlockSpacing);
m.setTranslate(0, kBottom);
m.preRotate(15.f, 0, kBottom + kBlockSpacing);
m.preScale(0.71f, 1.22f);
*matrices.append() = m;
// Align the next set with the middle of the previous in y, translated to the right in x.
SkPoint corners[] = {{0, 0}, { 0, kBottom }, { kWidth, kBottom }, {kWidth, 0} };
matrices[matrices.count()-1].mapPoints(corners, 4);
SkScalar y = (corners[0].fY + corners[1].fY + corners[2].fY + corners[3].fY) / 4;
SkScalar x = SkTMax(SkTMax(corners[0].fX, corners[1].fX),
SkTMax(corners[2].fX, corners[3].fX));
m.setTranslate(x, y);
m.preScale(0.2f, 0.2f);
*matrices.append() = m;
SkScalar maxX = 0;
for (int antiAlias = 0; antiAlias < 2; ++antiAlias) {
canvas->save();
canvas->translate(maxX, 0);
for (int m = 0; m < matrices.count(); ++m) {
canvas->save();
canvas->concat(matrices[m]);
bool aa = SkToBool(antiAlias);
// First draw a column with no bleeding and no filtering
this->drawCase1(canvas, kCol0X, kRow0Y, aa, SkCanvas::kStrict_SrcRectConstraint, kNone_SkFilterQuality);
this->drawCase2(canvas, kCol0X, kRow1Y, aa, SkCanvas::kStrict_SrcRectConstraint, kNone_SkFilterQuality);
this->drawCase3(canvas, kCol0X, kRow2Y, aa, SkCanvas::kStrict_SrcRectConstraint, kNone_SkFilterQuality);
this->drawCase4(canvas, kCol0X, kRow3Y, aa, SkCanvas::kStrict_SrcRectConstraint, kNone_SkFilterQuality);
this->drawCase5(canvas, kCol0X, kRow4Y, aa, SkCanvas::kStrict_SrcRectConstraint, kNone_SkFilterQuality);
// Then draw a column with no bleeding and low filtering
this->drawCase1(canvas, kCol1X, kRow0Y, aa, SkCanvas::kStrict_SrcRectConstraint, kLow_SkFilterQuality);
this->drawCase2(canvas, kCol1X, kRow1Y, aa, SkCanvas::kStrict_SrcRectConstraint, kLow_SkFilterQuality);
this->drawCase3(canvas, kCol1X, kRow2Y, aa, SkCanvas::kStrict_SrcRectConstraint, kLow_SkFilterQuality);
this->drawCase4(canvas, kCol1X, kRow3Y, aa, SkCanvas::kStrict_SrcRectConstraint, kLow_SkFilterQuality);
this->drawCase5(canvas, kCol1X, kRow4Y, aa, SkCanvas::kStrict_SrcRectConstraint, kLow_SkFilterQuality);
// Then draw a column with no bleeding and high filtering
this->drawCase1(canvas, kCol2X, kRow0Y, aa, SkCanvas::kStrict_SrcRectConstraint, kHigh_SkFilterQuality);
this->drawCase2(canvas, kCol2X, kRow1Y, aa, SkCanvas::kStrict_SrcRectConstraint, kHigh_SkFilterQuality);
this->drawCase3(canvas, kCol2X, kRow2Y, aa, SkCanvas::kStrict_SrcRectConstraint, kHigh_SkFilterQuality);
this->drawCase4(canvas, kCol2X, kRow3Y, aa, SkCanvas::kStrict_SrcRectConstraint, kHigh_SkFilterQuality);
this->drawCase5(canvas, kCol2X, kRow4Y, aa, SkCanvas::kStrict_SrcRectConstraint, kHigh_SkFilterQuality);
// Then draw a column with bleeding and no filtering (bleed should have no effect w/out blur)
this->drawCase1(canvas, kCol3X, kRow0Y, aa, SkCanvas::kFast_SrcRectConstraint, kNone_SkFilterQuality);
this->drawCase2(canvas, kCol3X, kRow1Y, aa, SkCanvas::kFast_SrcRectConstraint, kNone_SkFilterQuality);
this->drawCase3(canvas, kCol3X, kRow2Y, aa, SkCanvas::kFast_SrcRectConstraint, kNone_SkFilterQuality);
this->drawCase4(canvas, kCol3X, kRow3Y, aa, SkCanvas::kFast_SrcRectConstraint, kNone_SkFilterQuality);
this->drawCase5(canvas, kCol3X, kRow4Y, aa, SkCanvas::kFast_SrcRectConstraint, kNone_SkFilterQuality);
// Then draw a column with bleeding and low filtering
this->drawCase1(canvas, kCol4X, kRow0Y, aa, SkCanvas::kFast_SrcRectConstraint, kLow_SkFilterQuality);
this->drawCase2(canvas, kCol4X, kRow1Y, aa, SkCanvas::kFast_SrcRectConstraint, kLow_SkFilterQuality);
this->drawCase3(canvas, kCol4X, kRow2Y, aa, SkCanvas::kFast_SrcRectConstraint, kLow_SkFilterQuality);
this->drawCase4(canvas, kCol4X, kRow3Y, aa, SkCanvas::kFast_SrcRectConstraint, kLow_SkFilterQuality);
this->drawCase5(canvas, kCol4X, kRow4Y, aa, SkCanvas::kFast_SrcRectConstraint, kLow_SkFilterQuality);
// Finally draw a column with bleeding and high filtering
this->drawCase1(canvas, kCol5X, kRow0Y, aa, SkCanvas::kFast_SrcRectConstraint, kHigh_SkFilterQuality);
this->drawCase2(canvas, kCol5X, kRow1Y, aa, SkCanvas::kFast_SrcRectConstraint, kHigh_SkFilterQuality);
this->drawCase3(canvas, kCol5X, kRow2Y, aa, SkCanvas::kFast_SrcRectConstraint, kHigh_SkFilterQuality);
this->drawCase4(canvas, kCol5X, kRow3Y, aa, SkCanvas::kFast_SrcRectConstraint, kHigh_SkFilterQuality);
this->drawCase5(canvas, kCol5X, kRow4Y, aa, SkCanvas::kFast_SrcRectConstraint, kHigh_SkFilterQuality);
SkPoint corners[] = { { 0, 0 },{ 0, kBottom },{ kWidth, kBottom },{ kWidth, 0 } };
matrices[m].mapPoints(corners, 4);
SkScalar x = kBlockSize + SkTMax(SkTMax(corners[0].fX, corners[1].fX),
SkTMax(corners[2].fX, corners[3].fX));
maxX = SkTMax(maxX, x);
canvas->restore();
}
canvas->restore();
}
}
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->textureProvider()->refScratchTexture(desc,
GrTextureProvider::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;
}
static void test_matrix_min_max_scale(skiatest::Reporter* reporter) {
SkScalar scales[2];
bool success;
SkMatrix identity;
identity.reset();
REPORTER_ASSERT(reporter, SK_Scalar1 == identity.getMinScale());
REPORTER_ASSERT(reporter, SK_Scalar1 == identity.getMaxScale());
success = identity.getMinMaxScales(scales);
REPORTER_ASSERT(reporter, success && SK_Scalar1 == scales[0] && SK_Scalar1 == scales[1]);
SkMatrix scale;
scale.setScale(SK_Scalar1 * 2, SK_Scalar1 * 4);
REPORTER_ASSERT(reporter, SK_Scalar1 * 2 == scale.getMinScale());
REPORTER_ASSERT(reporter, SK_Scalar1 * 4 == scale.getMaxScale());
success = scale.getMinMaxScales(scales);
REPORTER_ASSERT(reporter, success && SK_Scalar1 * 2 == scales[0] && SK_Scalar1 * 4 == scales[1]);
SkMatrix rot90Scale;
rot90Scale.setRotate(90 * SK_Scalar1);
rot90Scale.postScale(SK_Scalar1 / 4, SK_Scalar1 / 2);
REPORTER_ASSERT(reporter, SK_Scalar1 / 4 == rot90Scale.getMinScale());
REPORTER_ASSERT(reporter, SK_Scalar1 / 2 == rot90Scale.getMaxScale());
success = rot90Scale.getMinMaxScales(scales);
REPORTER_ASSERT(reporter, success && SK_Scalar1 / 4 == scales[0] && SK_Scalar1 / 2 == scales[1]);
SkMatrix rotate;
rotate.setRotate(128 * SK_Scalar1);
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(SK_Scalar1, rotate.getMinScale(), SK_ScalarNearlyZero));
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(SK_Scalar1, rotate.getMaxScale(), SK_ScalarNearlyZero));
success = rotate.getMinMaxScales(scales);
REPORTER_ASSERT(reporter, success);
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(SK_Scalar1, scales[0], SK_ScalarNearlyZero));
REPORTER_ASSERT(reporter, SkScalarNearlyEqual(SK_Scalar1, scales[1], SK_ScalarNearlyZero));
SkMatrix translate;
translate.setTranslate(10 * SK_Scalar1, -5 * SK_Scalar1);
REPORTER_ASSERT(reporter, SK_Scalar1 == translate.getMinScale());
REPORTER_ASSERT(reporter, SK_Scalar1 == translate.getMaxScale());
success = translate.getMinMaxScales(scales);
REPORTER_ASSERT(reporter, success && SK_Scalar1 == scales[0] && SK_Scalar1 == scales[1]);
SkMatrix perspX;
perspX.reset();
perspX.setPerspX(SkScalarToPersp(SK_Scalar1 / 1000));
REPORTER_ASSERT(reporter, -SK_Scalar1 == perspX.getMinScale());
REPORTER_ASSERT(reporter, -SK_Scalar1 == perspX.getMaxScale());
// Verify that getMinMaxScales() doesn't update the scales array on failure.
scales[0] = -5;
scales[1] = -5;
success = perspX.getMinMaxScales(scales);
REPORTER_ASSERT(reporter, !success && -5 * SK_Scalar1 == scales[0] && -5 * SK_Scalar1 == scales[1]);
SkMatrix perspY;
perspY.reset();
perspY.setPerspY(SkScalarToPersp(-SK_Scalar1 / 500));
REPORTER_ASSERT(reporter, -SK_Scalar1 == perspY.getMinScale());
REPORTER_ASSERT(reporter, -SK_Scalar1 == perspY.getMaxScale());
scales[0] = -5;
scales[1] = -5;
success = perspY.getMinMaxScales(scales);
REPORTER_ASSERT(reporter, !success && -5 * SK_Scalar1 == scales[0] && -5 * SK_Scalar1 == scales[1]);
SkMatrix baseMats[] = {scale, rot90Scale, rotate,
translate, perspX, perspY};
SkMatrix mats[2*SK_ARRAY_COUNT(baseMats)];
for (size_t i = 0; i < SK_ARRAY_COUNT(baseMats); ++i) {
mats[i] = baseMats[i];
bool invertable = mats[i].invert(&mats[i + SK_ARRAY_COUNT(baseMats)]);
REPORTER_ASSERT(reporter, invertable);
}
SkRandom rand;
for (int m = 0; m < 1000; ++m) {
SkMatrix mat;
mat.reset();
for (int i = 0; i < 4; ++i) {
int x = rand.nextU() % SK_ARRAY_COUNT(mats);
mat.postConcat(mats[x]);
}
SkScalar minScale = mat.getMinScale();
SkScalar maxScale = mat.getMaxScale();
REPORTER_ASSERT(reporter, (minScale < 0) == (maxScale < 0));
REPORTER_ASSERT(reporter, (maxScale < 0) == mat.hasPerspective());
SkScalar scales[2];
bool success = mat.getMinMaxScales(scales);
REPORTER_ASSERT(reporter, success == !mat.hasPerspective());
REPORTER_ASSERT(reporter, !success || (scales[0] == minScale && scales[1] == maxScale));
if (mat.hasPerspective()) {
m -= 1; // try another non-persp matrix
continue;
}
// test a bunch of vectors. All should be scaled by between minScale and maxScale
// (modulo some error) and we should find a vector that is scaled by almost each.
static const SkScalar gVectorScaleTol = (105 * SK_Scalar1) / 100;
static const SkScalar gCloseScaleTol = (97 * SK_Scalar1) / 100;
SkScalar max = 0, min = SK_ScalarMax;
SkVector vectors[1000];
for (size_t i = 0; i < SK_ARRAY_COUNT(vectors); ++i) {
vectors[i].fX = rand.nextSScalar1();
vectors[i].fY = rand.nextSScalar1();
if (!vectors[i].normalize()) {
i -= 1;
continue;
}
}
mat.mapVectors(vectors, SK_ARRAY_COUNT(vectors));
for (size_t i = 0; i < SK_ARRAY_COUNT(vectors); ++i) {
SkScalar d = vectors[i].length();
REPORTER_ASSERT(reporter, SkScalarDiv(d, maxScale) < gVectorScaleTol);
REPORTER_ASSERT(reporter, SkScalarDiv(minScale, d) < gVectorScaleTol);
if (max < d) {
max = d;
}
if (min > d) {
min = d;
}
}
REPORTER_ASSERT(reporter, SkScalarDiv(max, maxScale) >= gCloseScaleTol);
REPORTER_ASSERT(reporter, SkScalarDiv(minScale, min) >= gCloseScaleTol);
}
}
SkPDFImageShader::SkPDFImageShader(SkPDFShader::State* state) : fState(state) {
fState.get()->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 = fState.get()->fCanvasTransform;
finalMatrix.preConcat(fState.get()->fShaderTransform);
SkRect deviceBounds;
deviceBounds.set(fState.get()->fBBox);
if (!inverseTransformBBox(finalMatrix, &deviceBounds)) {
return;
}
const SkBitmap* image = &fState.get()->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] = fState.get()->fImageTileModes[0];
tileModes[1] = fState.get()->fImageTileModes[1];
if (tileModes[0] != SkShader::kClamp_TileMode ||
tileModes[1] != SkShader::kClamp_TileMode) {
deviceBounds.join(bitmapBounds);
}
SkMatrix unflip;
unflip.setTranslate(0, SkScalarRoundToScalar(deviceBounds.height()));
unflip.preScale(SK_Scalar1, -SK_Scalar1);
SkISize size = SkISize::Make(SkScalarRound(deviceBounds.width()),
SkScalarRound(deviceBounds.height()));
SkPDFDevice pattern(size, size, unflip);
SkCanvas canvas(&pattern);
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);
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(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);
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 (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);
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 = 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());
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 (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);
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 = deviceBounds.height();
}
}
// Put the canvas into the pattern stream (fContent).
SkAutoTUnref<SkStream> content(pattern.content());
setData(content.get());
SkPDFResourceDict* resourceDict = pattern.getResourceDict();
resourceDict->getReferencedResources(fResources, &fResources, false);
populate_tiling_pattern_dict(this, patternBBox,
pattern.getResourceDict(), finalMatrix);
fState.get()->fImage.unlockPixels();
}
////////////////////////////////////////////////////////////////////////////////
// Create a 1-bit clip mask in the stencil buffer. 'devClipBounds' are in device
// (as opposed to canvas) coordinates
bool GrClipMaskManager::createStencilClipMask(int32_t elementsGenID,
InitialState initialState,
const ElementList& elements,
const SkIRect& clipSpaceIBounds,
const SkIPoint& clipSpaceToStencilOffset) {
SkASSERT(kNone_ClipMaskType == fCurrClipMaskType);
GrDrawState* drawState = fGpu->drawState();
SkASSERT(drawState->isClipState());
GrRenderTarget* rt = drawState->getRenderTarget();
SkASSERT(NULL != rt);
// TODO: dynamically attach a SB when needed.
GrStencilBuffer* stencilBuffer = rt->getStencilBuffer();
if (NULL == stencilBuffer) {
return false;
}
if (stencilBuffer->mustRenderClip(elementsGenID, clipSpaceIBounds, clipSpaceToStencilOffset)) {
stencilBuffer->setLastClip(elementsGenID, clipSpaceIBounds, clipSpaceToStencilOffset);
// Set the matrix so that rendered clip elements are transformed from clip to stencil space.
SkVector translate = {
SkIntToScalar(clipSpaceToStencilOffset.fX),
SkIntToScalar(clipSpaceToStencilOffset.fY)
};
SkMatrix matrix;
matrix.setTranslate(translate);
GrDrawTarget::AutoGeometryAndStatePush agasp(fGpu, GrDrawTarget::kReset_ASRInit, &matrix);
drawState = fGpu->drawState();
drawState->setRenderTarget(rt);
// We set the current clip to the bounds so that our recursive draws are scissored to them.
SkIRect stencilSpaceIBounds(clipSpaceIBounds);
stencilSpaceIBounds.offset(clipSpaceToStencilOffset);
GrDrawTarget::AutoClipRestore acr(fGpu, stencilSpaceIBounds);
drawState->enableState(GrDrawState::kClip_StateBit);
#if !VISUALIZE_COMPLEX_CLIP
drawState->enableState(GrDrawState::kNoColorWrites_StateBit);
#endif
int clipBit = stencilBuffer->bits();
SkASSERT((clipBit <= 16) && "Ganesh only handles 16b or smaller stencil buffers");
clipBit = (1 << (clipBit-1));
fGpu->clearStencilClip(stencilSpaceIBounds, kAllIn_InitialState == initialState);
// walk through each clip element and perform its set op
// with the existing clip.
for (ElementList::Iter iter(elements.headIter()); NULL != iter.get(); iter.next()) {
const Element* element = iter.get();
bool fillInverted = false;
// enabled at bottom of loop
drawState->disableState(GrGpu::kModifyStencilClip_StateBit);
// if the target is MSAA then we want MSAA enabled when the clip is soft
if (rt->isMultisampled()) {
drawState->setState(GrDrawState::kHWAntialias_StateBit, element->isAA());
}
// This will be used to determine whether the clip shape can be rendered into the
// stencil with arbitrary stencil settings.
GrPathRenderer::StencilSupport stencilSupport;
SkStrokeRec stroke(SkStrokeRec::kFill_InitStyle);
SkRegion::Op op = element->getOp();
GrPathRenderer* pr = NULL;
SkPath clipPath;
if (Element::kRect_Type == element->getType()) {
stencilSupport = GrPathRenderer::kNoRestriction_StencilSupport;
fillInverted = false;
} else {
element->asPath(&clipPath);
fillInverted = clipPath.isInverseFillType();
if (fillInverted) {
clipPath.toggleInverseFillType();
}
pr = this->getContext()->getPathRenderer(clipPath,
stroke,
fGpu,
false,
GrPathRendererChain::kStencilOnly_DrawType,
&stencilSupport);
if (NULL == pr) {
return false;
}
}
int passes;
GrStencilSettings stencilSettings[GrStencilSettings::kMaxStencilClipPasses];
bool canRenderDirectToStencil =
GrPathRenderer::kNoRestriction_StencilSupport == stencilSupport;
bool canDrawDirectToClip; // Given the renderer, the element,
// fill rule, and set operation can
// we render the element directly to
// stencil bit used for clipping.
canDrawDirectToClip = GrStencilSettings::GetClipPasses(op,
canRenderDirectToStencil,
clipBit,
fillInverted,
&passes,
stencilSettings);
// draw the element to the client stencil bits if necessary
if (!canDrawDirectToClip) {
GR_STATIC_CONST_SAME_STENCIL(gDrawToStencil,
kIncClamp_StencilOp,
kIncClamp_StencilOp,
kAlways_StencilFunc,
0xffff,
0x0000,
0xffff);
SET_RANDOM_COLOR
if (Element::kRect_Type == element->getType()) {
*drawState->stencil() = gDrawToStencil;
fGpu->drawSimpleRect(element->getRect(), NULL);
} else {
if (!clipPath.isEmpty()) {
if (canRenderDirectToStencil) {
*drawState->stencil() = gDrawToStencil;
pr->drawPath(clipPath, stroke, fGpu, false);
} else {
pr->stencilPath(clipPath, stroke, fGpu);
}
}
}
}
// now we modify the clip bit by rendering either the clip
// element directly or a bounding rect of the entire clip.
drawState->enableState(GrGpu::kModifyStencilClip_StateBit);
for (int p = 0; p < passes; ++p) {
*drawState->stencil() = stencilSettings[p];
if (canDrawDirectToClip) {
if (Element::kRect_Type == element->getType()) {
SET_RANDOM_COLOR
fGpu->drawSimpleRect(element->getRect(), NULL);
} else {
SET_RANDOM_COLOR
pr->drawPath(clipPath, stroke, fGpu, false);
}
} else {
SET_RANDOM_COLOR
// The view matrix is setup to do clip space -> stencil space translation, so
// draw rect in clip space.
fGpu->drawSimpleRect(SkRect::Make(clipSpaceIBounds), NULL);
}
}
}
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?
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.get(), backgroundMatrix,
GrTextureDomain::MakeTexelDomain(backgroundTex.get(),
background->subset()),
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.get(), foregroundMatrix,
GrTextureDomain::MakeTexelDomain(foregroundTex.get(),
foreground->subset()),
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));
}
sk_sp<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.get());
}
} else {
paint.addColorFragmentProcessor(bgFP);
}
paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
sk_sp<GrDrawContext> drawContext(context->newDrawContext(GrContext::kLoose_BackingFit,
bounds.width(), bounds.height(),
kSkia8888_GrPixelConfig));
if (!drawContext) {
return nullptr;
}
SkMatrix matrix;
matrix.setTranslate(SkIntToScalar(-bounds.left()), SkIntToScalar(-bounds.top()));
drawContext->drawRect(GrClip::WideOpen(), paint, matrix, SkRect::Make(bounds));
return SkSpecialImage::MakeFromGpu(SkIRect::MakeWH(bounds.width(), bounds.height()),
kNeedNewImageUniqueID_SpecialImage,
drawContext->asTexture());
}
static void setTranslate(JNIEnv* env, jobject clazz, jlong objHandle, jfloat dx, jfloat dy) {
SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
obj->setTranslate(dx, dy);
}
static void test_matrix_preserve_shape(skiatest::Reporter* reporter) {
SkMatrix mat;
// identity
mat.setIdentity();
REPORTER_ASSERT(reporter, mat.isSimilarity());
REPORTER_ASSERT(reporter, mat.preservesRightAngles());
// translation only
mat.reset();
mat.setTranslate(SkIntToScalar(100), SkIntToScalar(100));
REPORTER_ASSERT(reporter, mat.isSimilarity());
REPORTER_ASSERT(reporter, mat.preservesRightAngles());
// scale with same size
mat.reset();
mat.setScale(SkIntToScalar(15), SkIntToScalar(15));
REPORTER_ASSERT(reporter, mat.isSimilarity());
REPORTER_ASSERT(reporter, mat.preservesRightAngles());
// scale with one negative
mat.reset();
mat.setScale(SkIntToScalar(-15), SkIntToScalar(15));
REPORTER_ASSERT(reporter, mat.isSimilarity());
REPORTER_ASSERT(reporter, mat.preservesRightAngles());
// scale with different size
mat.reset();
mat.setScale(SkIntToScalar(15), SkIntToScalar(20));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
REPORTER_ASSERT(reporter, mat.preservesRightAngles());
// scale with same size at a pivot point
mat.reset();
mat.setScale(SkIntToScalar(15), SkIntToScalar(15),
SkIntToScalar(2), SkIntToScalar(2));
REPORTER_ASSERT(reporter, mat.isSimilarity());
REPORTER_ASSERT(reporter, mat.preservesRightAngles());
// scale with different size at a pivot point
mat.reset();
mat.setScale(SkIntToScalar(15), SkIntToScalar(20),
SkIntToScalar(2), SkIntToScalar(2));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
REPORTER_ASSERT(reporter, mat.preservesRightAngles());
// skew with same size
mat.reset();
mat.setSkew(SkIntToScalar(15), SkIntToScalar(15));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
REPORTER_ASSERT(reporter, !mat.preservesRightAngles());
// skew with different size
mat.reset();
mat.setSkew(SkIntToScalar(15), SkIntToScalar(20));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
REPORTER_ASSERT(reporter, !mat.preservesRightAngles());
// skew with same size at a pivot point
mat.reset();
mat.setSkew(SkIntToScalar(15), SkIntToScalar(15),
SkIntToScalar(2), SkIntToScalar(2));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
REPORTER_ASSERT(reporter, !mat.preservesRightAngles());
// skew with different size at a pivot point
mat.reset();
mat.setSkew(SkIntToScalar(15), SkIntToScalar(20),
SkIntToScalar(2), SkIntToScalar(2));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
REPORTER_ASSERT(reporter, !mat.preservesRightAngles());
// perspective x
mat.reset();
mat.setPerspX(SK_Scalar1 / 2);
REPORTER_ASSERT(reporter, !mat.isSimilarity());
REPORTER_ASSERT(reporter, !mat.preservesRightAngles());
// perspective y
mat.reset();
mat.setPerspY(SK_Scalar1 / 2);
REPORTER_ASSERT(reporter, !mat.isSimilarity());
REPORTER_ASSERT(reporter, !mat.preservesRightAngles());
// rotate
for (int angle = 0; angle < 360; ++angle) {
mat.reset();
mat.setRotate(SkIntToScalar(angle));
REPORTER_ASSERT(reporter, mat.isSimilarity());
REPORTER_ASSERT(reporter, mat.preservesRightAngles());
}
// see if there are any accumulated precision issues
mat.reset();
for (int i = 1; i < 360; i++) {
mat.postRotate(SkIntToScalar(1));
}
REPORTER_ASSERT(reporter, mat.isSimilarity());
REPORTER_ASSERT(reporter, mat.preservesRightAngles());
// rotate + translate
mat.reset();
mat.setRotate(SkIntToScalar(30));
mat.postTranslate(SkIntToScalar(10), SkIntToScalar(20));
REPORTER_ASSERT(reporter, mat.isSimilarity());
REPORTER_ASSERT(reporter, mat.preservesRightAngles());
// rotate + uniform scale
mat.reset();
mat.setRotate(SkIntToScalar(30));
mat.postScale(SkIntToScalar(2), SkIntToScalar(2));
REPORTER_ASSERT(reporter, mat.isSimilarity());
REPORTER_ASSERT(reporter, mat.preservesRightAngles());
// rotate + non-uniform scale
mat.reset();
mat.setRotate(SkIntToScalar(30));
mat.postScale(SkIntToScalar(3), SkIntToScalar(2));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
REPORTER_ASSERT(reporter, !mat.preservesRightAngles());
// non-uniform scale + rotate
mat.reset();
mat.setScale(SkIntToScalar(3), SkIntToScalar(2));
mat.postRotate(SkIntToScalar(30));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
REPORTER_ASSERT(reporter, mat.preservesRightAngles());
// all zero
mat.setAll(0, 0, 0, 0, 0, 0, 0, 0, 0);
REPORTER_ASSERT(reporter, !mat.isSimilarity());
REPORTER_ASSERT(reporter, !mat.preservesRightAngles());
// all zero except perspective
mat.reset();
mat.setAll(0, 0, 0, 0, 0, 0, 0, 0, SK_Scalar1);
REPORTER_ASSERT(reporter, !mat.isSimilarity());
REPORTER_ASSERT(reporter, !mat.preservesRightAngles());
// scales zero, only skews (rotation)
mat.setAll(0, SK_Scalar1, 0,
-SK_Scalar1, 0, 0,
0, 0, SkMatrix::I()[8]);
REPORTER_ASSERT(reporter, mat.isSimilarity());
REPORTER_ASSERT(reporter, mat.preservesRightAngles());
// scales zero, only skews (reflection)
mat.setAll(0, SK_Scalar1, 0,
SK_Scalar1, 0, 0,
0, 0, SkMatrix::I()[8]);
REPORTER_ASSERT(reporter, mat.isSimilarity());
REPORTER_ASSERT(reporter, mat.preservesRightAngles());
}
void GrDistanceFieldTextContext::drawPackedGlyph(GrGlyph::PackedID packed,
GrFixed vx, GrFixed vy,
GrFontScaler* scaler) {
if (NULL == fDrawTarget) {
return;
}
if (NULL == fStrike) {
fStrike = fContext->getFontCache()->getStrike(scaler, true);
}
GrGlyph* glyph = fStrike->getGlyph(packed, scaler);
if (NULL == glyph || glyph->fBounds.isEmpty()) {
return;
}
SkScalar sx = SkFixedToScalar(vx);
SkScalar sy = SkFixedToScalar(vy);
/*
// not valid, need to find a different solution for this
vx += SkIntToFixed(glyph->fBounds.fLeft);
vy += SkIntToFixed(glyph->fBounds.fTop);
// keep them as ints until we've done the clip-test
GrFixed width = glyph->fBounds.width();
GrFixed height = glyph->fBounds.height();
// check if we clipped out
if (true || NULL == glyph->fPlot) {
int x = vx >> 16;
int y = vy >> 16;
if (fClipRect.quickReject(x, y, x + width, y + height)) {
// SkCLZ(3); // so we can set a break-point in the debugger
return;
}
}
*/
if (NULL == glyph->fPlot) {
if (fStrike->getGlyphAtlas(glyph, scaler)) {
goto HAS_ATLAS;
}
// try to clear out an unused plot before we flush
fContext->getFontCache()->freePlotExceptFor(fStrike);
if (fStrike->getGlyphAtlas(glyph, scaler)) {
goto HAS_ATLAS;
}
if (c_DumpFontCache) {
#ifdef SK_DEVELOPER
fContext->getFontCache()->dump();
#endif
}
// before we purge the cache, we must flush any accumulated draws
this->flushGlyphs();
fContext->flush();
// try to purge
fContext->getFontCache()->purgeExceptFor(fStrike);
// need to use new flush count here
if (fStrike->getGlyphAtlas(glyph, scaler)) {
goto HAS_ATLAS;
}
if (NULL == glyph->fPath) {
SkPath* path = SkNEW(SkPath);
if (!scaler->getGlyphPath(glyph->glyphID(), path)) {
// flag the glyph as being dead?
delete path;
return;
}
glyph->fPath = path;
}
GrContext::AutoMatrix am;
SkMatrix translate;
translate.setTranslate(sx, sy);
GrPaint tmpPaint(fPaint);
am.setPreConcat(fContext, translate, &tmpPaint);
SkStrokeRec stroke(SkStrokeRec::kFill_InitStyle);
fContext->drawPath(tmpPaint, *glyph->fPath, stroke);
return;
}
HAS_ATLAS:
SkASSERT(glyph->fPlot);
GrDrawTarget::DrawToken drawToken = fDrawTarget->getCurrentDrawToken();
glyph->fPlot->setDrawToken(drawToken);
GrTexture* texture = glyph->fPlot->texture();
SkASSERT(texture);
if (fCurrTexture != texture || fCurrVertex + 4 > fMaxVertices) {
this->flushGlyphs();
fCurrTexture = texture;
fCurrTexture->ref();
}
if (NULL == fVertices) {
// If we need to reserve vertices allow the draw target to suggest
// a number of verts to reserve and whether to perform a flush.
fMaxVertices = kMinRequestedVerts;
fDrawTarget->drawState()->setVertexAttribs<gTextVertexAttribs>(
SK_ARRAY_COUNT(gTextVertexAttribs));
bool flush = fDrawTarget->geometryHints(&fMaxVertices, NULL);
if (flush) {
this->flushGlyphs();
fContext->flush();
fDrawTarget->drawState()->setVertexAttribs<gTextVertexAttribs>(
SK_ARRAY_COUNT(gTextVertexAttribs));
}
fMaxVertices = kDefaultRequestedVerts;
// ignore return, no point in flushing again.
fDrawTarget->geometryHints(&fMaxVertices, NULL);
int maxQuadVertices = 4 * fContext->getQuadIndexBuffer()->maxQuads();
if (fMaxVertices < kMinRequestedVerts) {
fMaxVertices = kDefaultRequestedVerts;
} else if (fMaxVertices > maxQuadVertices) {
// don't exceed the limit of the index buffer
fMaxVertices = maxQuadVertices;
}
bool success = fDrawTarget->reserveVertexAndIndexSpace(fMaxVertices,
0,
GrTCast<void**>(&fVertices),
NULL);
GrAlwaysAssert(success);
SkASSERT(2*sizeof(GrPoint) == fDrawTarget->getDrawState().getVertexSize());
}
SkScalar dx = SkIntToScalar(glyph->fBounds.fLeft);
SkScalar dy = SkIntToScalar(glyph->fBounds.fTop);
SkScalar width = SkIntToScalar(glyph->fBounds.width());
SkScalar height = SkIntToScalar(glyph->fBounds.height());
SkScalar scale = fTextRatio;
dx *= scale;
dy *= scale;
sx += dx;
sy += dy;
width *= scale;
height *= scale;
GrFixed tx = SkIntToFixed(glyph->fAtlasLocation.fX);
GrFixed ty = SkIntToFixed(glyph->fAtlasLocation.fY);
GrFixed tw = SkIntToFixed(glyph->fBounds.width());
GrFixed th = SkIntToFixed(glyph->fBounds.height());
fVertices[2*fCurrVertex].setRectFan(sx,
sy,
sx + width,
sy + height,
2 * sizeof(SkPoint));
fVertices[2*fCurrVertex+1].setRectFan(SkFixedToFloat(texture->normalizeFixedX(tx)),
SkFixedToFloat(texture->normalizeFixedY(ty)),
SkFixedToFloat(texture->normalizeFixedX(tx + tw)),
SkFixedToFloat(texture->normalizeFixedY(ty + th)),
2 * sizeof(SkPoint));
fCurrVertex += 4;
}
void onDraw(int loops, SkCanvas* canvas) override {
SkRandom scaleRand;
SkRandom transRand;
SkRandom rotRand;
int width, height;
if (fUseAtlas) {
width = kAtlasCellWidth;
height = kAtlasCellHeight;
} else {
width = kCheckerboardWidth;
height = kCheckerboardHeight;
}
SkPaint clearPaint;
clearPaint.setColor(0xFF000000);
clearPaint.setAntiAlias(true);
SkISize size = canvas->getDeviceSize();
SkScalar maxTransX, maxTransY;
if (kScale_Type == fType) {
maxTransX = size.fWidth - (1.5f * width);
maxTransY = size.fHeight - (1.5f * height);
} else if (kTranslate_Type == fType) {
maxTransX = SkIntToScalar(size.fWidth - width);
maxTransY = SkIntToScalar(size.fHeight - height);
} else {
SkASSERT(kRotate_Type == fType);
// Yes, some rotations will be off the top and left sides
maxTransX = size.fWidth - SK_ScalarSqrt2 * height;
maxTransY = size.fHeight - SK_ScalarSqrt2 * height;
}
SkMatrix mat;
SkRect dst = { 0, 0, SkIntToScalar(width), SkIntToScalar(height) };
SkRect clearRect = { -1.0f, -1.0f, width+1.0f, height+1.0f };
SkPoint verts[4] = { // for drawVertices path
{ 0, 0 },
{ 0, SkIntToScalar(height) },
{ SkIntToScalar(width), SkIntToScalar(height) },
{ SkIntToScalar(width), 0 }
};
uint16_t indices[6] = { 0, 1, 2, 0, 2, 3 };
SkPaint p;
p.setColor(0xFF000000);
p.setFilterQuality(kLow_SkFilterQuality);
SkPaint p2; // for drawVertices path
p2.setColor(0xFF000000);
p2.setFilterQuality(kLow_SkFilterQuality);
p2.setShader(SkShader::CreateBitmapShader(fAtlas,
SkShader::kClamp_TileMode,
SkShader::kClamp_TileMode))->unref();
for (int i = 0; i < loops; ++i, ++fNumSaved) {
if (0 == i % kNumBeforeClear) {
if (kPartial_Clear == fClear) {
for (int j = 0; j < fNumSaved; ++j) {
canvas->setMatrix(SkMatrix::I());
mat.setTranslate(fSaved[j][0], fSaved[j][1]);
if (kScale_Type == fType) {
mat.preScale(fSaved[j][2], fSaved[j][2]);
} else if (kRotate_Type == fType) {
mat.preRotate(fSaved[j][2]);
}
canvas->concat(mat);
canvas->drawRect(clearRect, clearPaint);
}
} else {
canvas->clear(0xFF000000);
}
fNumSaved = 0;
}
SkASSERT(fNumSaved < kNumBeforeClear);
canvas->setMatrix(SkMatrix::I());
fSaved[fNumSaved][0] = transRand.nextRangeScalar(0.0f, maxTransX);
fSaved[fNumSaved][1] = transRand.nextRangeScalar(0.0f, maxTransY);
if (fAligned) {
// make the translations integer aligned
fSaved[fNumSaved][0] = SkScalarFloorToScalar(fSaved[fNumSaved][0]);
fSaved[fNumSaved][1] = SkScalarFloorToScalar(fSaved[fNumSaved][1]);
}
mat.setTranslate(fSaved[fNumSaved][0], fSaved[fNumSaved][1]);
if (kScale_Type == fType) {
fSaved[fNumSaved][2] = scaleRand.nextRangeScalar(0.5f, 1.5f);
mat.preScale(fSaved[fNumSaved][2], fSaved[fNumSaved][2]);
} else if (kRotate_Type == fType) {
fSaved[fNumSaved][2] = rotRand.nextRangeScalar(0.0f, 360.0f);
mat.preRotate(fSaved[fNumSaved][2]);
}
canvas->concat(mat);
if (fUseAtlas) {
const int curCell = i % (kNumAtlasedX * kNumAtlasedY);
SkIRect src = fAtlasRects[curCell % (kNumAtlasedX)][curCell / (kNumAtlasedX)];
if (fUseDrawVertices) {
SkPoint uvs[4] = {
{ SkIntToScalar(src.fLeft), SkIntToScalar(src.fBottom) },
{ SkIntToScalar(src.fLeft), SkIntToScalar(src.fTop) },
{ SkIntToScalar(src.fRight), SkIntToScalar(src.fTop) },
{ SkIntToScalar(src.fRight), SkIntToScalar(src.fBottom) },
};
canvas->drawVertices(SkCanvas::kTriangles_VertexMode,
4, verts, uvs, nullptr, nullptr,
indices, 6, p2);
} else {
canvas->drawBitmapRect(fAtlas, src, dst, &p,
SkCanvas::kFast_SrcRectConstraint);
}
} else {
canvas->drawBitmapRect(fCheckerboard, dst, &p);
}
}
}
SkMatrix makeMatrix() {
SkMatrix matrix;
matrix.reset();
RandomSetMatrix setMatrix = (RandomSetMatrix) fRand.nextRangeU(0, kRandomSetMatrix_Last);
if (fPrintName) {
SkDebugf("%.*s%s\n", fPathDepth * 3, fTab, gRandomSetMatrixNames[setMatrix]);
}
switch (setMatrix) {
case kSetIdentity:
break;
case kSetTranslateX:
matrix.setTranslateX(makeScalar());
break;
case kSetTranslateY:
matrix.setTranslateY(makeScalar());
break;
case kSetTranslate:
matrix.setTranslate(makeScalar(), makeScalar());
break;
case kSetScaleX:
matrix.setScaleX(makeScalar());
break;
case kSetScaleY:
matrix.setScaleY(makeScalar());
break;
case kSetScale:
matrix.setScale(makeScalar(), makeScalar());
break;
case kSetScaleTranslate:
matrix.setScale(makeScalar(), makeScalar(), makeScalar(), makeScalar());
break;
case kSetSkewX:
matrix.setSkewX(makeScalar());
break;
case kSetSkewY:
matrix.setSkewY(makeScalar());
break;
case kSetSkew:
matrix.setSkew(makeScalar(), makeScalar());
break;
case kSetSkewTranslate:
matrix.setSkew(makeScalar(), makeScalar(), makeScalar(), makeScalar());
break;
case kSetRotate:
matrix.setRotate(makeScalar());
break;
case kSetRotateTranslate:
matrix.setRotate(makeScalar(), makeScalar(), makeScalar());
break;
case kSetPerspectiveX:
matrix.setPerspX(makeScalar());
break;
case kSetPerspectiveY:
matrix.setPerspY(makeScalar());
break;
case kSetAll:
matrix.setAll(makeScalar(), makeScalar(), makeScalar(),
makeScalar(), makeScalar(), makeScalar(),
makeScalar(), makeScalar(), makeScalar());
break;
}
return matrix;
}
void NativeImageSkia::drawPattern(
GraphicsContext* context,
const FloatRect& floatSrcRect,
const FloatSize& scale,
const FloatPoint& phase,
CompositeOperator compositeOp,
const FloatRect& destRect,
WebBlendMode blendMode,
const IntSize& repeatSpacing) const
{
FloatRect normSrcRect = floatSrcRect;
normSrcRect.intersect(FloatRect(0, 0, bitmap().width(), bitmap().height()));
if (destRect.isEmpty() || normSrcRect.isEmpty())
return; // nothing to draw
SkMatrix totalMatrix = context->getTotalMatrix();
AffineTransform ctm = context->getCTM();
SkScalar ctmScaleX = ctm.xScale();
SkScalar ctmScaleY = ctm.yScale();
totalMatrix.preScale(scale.width(), scale.height());
// Figure out what size the bitmap will be in the destination. The
// destination rect is the bounds of the pattern, we need to use the
// matrix to see how big it will be.
SkRect destRectTarget;
totalMatrix.mapRect(&destRectTarget, normSrcRect);
float destBitmapWidth = SkScalarToFloat(destRectTarget.width());
float destBitmapHeight = SkScalarToFloat(destRectTarget.height());
bool isLazyDecoded = DeferredImageDecoder::isLazyDecoded(bitmap());
// Compute the resampling mode.
InterpolationQuality resampling;
if (context->isAccelerated())
resampling = InterpolationLow;
else if (isLazyDecoded)
resampling = InterpolationHigh;
else
resampling = computeInterpolationQuality(totalMatrix, normSrcRect.width(), normSrcRect.height(), destBitmapWidth, destBitmapHeight, isDataComplete());
resampling = limitInterpolationQuality(context, resampling);
SkMatrix localMatrix;
// We also need to translate it such that the origin of the pattern is the
// origin of the destination rect, which is what WebKit expects. Skia uses
// the coordinate system origin as the base for the pattern. If WebKit wants
// a shifted image, it will shift it from there using the localMatrix.
const float adjustedX = phase.x() + normSrcRect.x() * scale.width();
const float adjustedY = phase.y() + normSrcRect.y() * scale.height();
localMatrix.setTranslate(SkFloatToScalar(adjustedX), SkFloatToScalar(adjustedY));
sk_sp<SkShader> shader;
SkFilterQuality filterLevel = static_cast<SkFilterQuality>(resampling);
// Bicubic filter is only applied to defer-decoded images, see
// NativeImageSkia::draw for details.
if (resampling == InterpolationHigh && !isLazyDecoded) {
// Do nice resampling.
filterLevel = kNone_SkFilterQuality;
float scaleX = destBitmapWidth / normSrcRect.width();
float scaleY = destBitmapHeight / normSrcRect.height();
SkRect scaledSrcRect;
// Since we are resizing the bitmap, we need to remove the scale
// applied to the pixels in the bitmap shader. This means we need
// CTM * localMatrix to have identity scale. Since we
// can't modify CTM (or the rectangle will be drawn in the wrong
// place), we must set localMatrix's scale to the inverse of
// CTM scale.
localMatrix.preScale(ctmScaleX ? 1 / ctmScaleX : 1, ctmScaleY ? 1 / ctmScaleY : 1);
// The image fragment generated here is not exactly what is
// requested. The scale factor used is approximated and image
// fragment is slightly larger to align to integer
// boundaries.
SkBitmap resampled = extractScaledImageFragment(normSrcRect, scaleX, scaleY, &scaledSrcRect);
if (repeatSpacing.isZero()) {
shader = SkShader::MakeBitmapShader(resampled, SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, &localMatrix);
} else {
shader = SkShader::MakeBitmapShader(
createBitmapWithSpace(resampled, repeatSpacing.width() * ctmScaleX, repeatSpacing.height() * ctmScaleY),
SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, &localMatrix);
}
} else {
// Because no resizing occurred, the shader transform should be
// set to the pattern's transform, which just includes scale.
localMatrix.preScale(scale.width(), scale.height());
// No need to resample before drawing.
SkBitmap srcSubset;
bitmap().extractSubset(&srcSubset, enclosingIntRect(normSrcRect));
if (repeatSpacing.isZero()) {
shader = SkShader::MakeBitmapShader(srcSubset, SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, &localMatrix);
} else {
shader = SkShader::MakeBitmapShader(
createBitmapWithSpace(srcSubset, repeatSpacing.width() * ctmScaleX, repeatSpacing.height() * ctmScaleY),
SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, &localMatrix);
}
}
SkPaint paint;
paint.setShader(shader);
paint.setXfermodeMode(WebCoreCompositeToSkiaComposite(compositeOp, blendMode));
paint.setColorFilter(sk_ref_sp(context->colorFilter()));
paint.setFilterQuality(filterLevel);
context->drawRect(destRect, paint);
}
static void test_savelayer_extraction(skiatest::Reporter* reporter) {
static const int kWidth = 100;
static const int kHeight = 100;
// Create complex paint that the bounding box computation code can't
// optimize away
SkScalar blueToRedMatrix[20] = { 0 };
blueToRedMatrix[2] = blueToRedMatrix[18] = SK_Scalar1;
SkAutoTUnref<SkColorFilter> blueToRed(SkColorMatrixFilter::Create(blueToRedMatrix));
SkAutoTUnref<SkImageFilter> filter(SkColorFilterImageFilter::Create(blueToRed.get()));
SkPaint complexPaint;
complexPaint.setImageFilter(filter);
SkAutoTUnref<SkPicture> pict, child;
SkRTreeFactory bbhFactory;
{
SkPictureRecorder recorder;
SkCanvas* c = recorder.beginRecording(SkIntToScalar(kWidth), SkIntToScalar(kHeight),
&bbhFactory,
SkPictureRecorder::kComputeSaveLayerInfo_RecordFlag);
c->saveLayer(NULL, &complexPaint);
c->restore();
child.reset(recorder.endRecording());
}
// create a picture with the structure:
// 1)
// SaveLayer
// Restore
// 2)
// SaveLayer
// Translate
// SaveLayer w/ bound
// Restore
// Restore
// 3)
// SaveLayer w/ copyable paint
// Restore
// 4)
// SaveLayer
// DrawPicture (which has a SaveLayer/Restore pair)
// Restore
// 5)
// SaveLayer
// DrawPicture with Matrix & Paint (with SaveLayer/Restore pair)
// Restore
{
SkPictureRecorder recorder;
SkCanvas* c = recorder.beginRecording(SkIntToScalar(kWidth),
SkIntToScalar(kHeight),
&bbhFactory,
SkPictureRecorder::kComputeSaveLayerInfo_RecordFlag);
// 1)
c->saveLayer(NULL, &complexPaint); // layer #0
c->restore();
// 2)
c->saveLayer(NULL, NULL); // layer #1
c->translate(kWidth / 2.0f, kHeight / 2.0f);
SkRect r = SkRect::MakeXYWH(0, 0, kWidth/2, kHeight/2);
c->saveLayer(&r, &complexPaint); // layer #2
c->restore();
c->restore();
// 3)
{
c->saveLayer(NULL, &complexPaint); // layer #3
c->restore();
}
SkPaint layerPaint;
layerPaint.setColor(SK_ColorRED); // Non-alpha only to avoid SaveLayerDrawRestoreNooper
// 4)
{
c->saveLayer(NULL, &layerPaint); // layer #4
c->drawPicture(child); // layer #5 inside picture
c->restore();
}
// 5
{
SkPaint picturePaint;
SkMatrix trans;
trans.setTranslate(10, 10);
c->saveLayer(NULL, &layerPaint); // layer #6
c->drawPicture(child, &trans, &picturePaint); // layer #7 inside picture
c->restore();
}
pict.reset(recorder.endRecording());
}
// Now test out the SaveLayer extraction
if (!SkCanvas::Internal_Private_GetIgnoreSaveLayerBounds()) {
SkPicture::AccelData::Key key = SkLayerInfo::ComputeKey();
const SkPicture::AccelData* data = pict->EXPERIMENTAL_getAccelData(key);
REPORTER_ASSERT(reporter, data);
const SkLayerInfo *gpuData = static_cast<const SkLayerInfo*>(data);
REPORTER_ASSERT(reporter, 8 == gpuData->numBlocks());
const SkLayerInfo::BlockInfo& info0 = gpuData->block(0);
// The parent/child layers appear in reverse order
const SkLayerInfo::BlockInfo& info1 = gpuData->block(2);
const SkLayerInfo::BlockInfo& info2 = gpuData->block(1);
const SkLayerInfo::BlockInfo& info3 = gpuData->block(3);
// The parent/child layers appear in reverse order
const SkLayerInfo::BlockInfo& info4 = gpuData->block(5);
const SkLayerInfo::BlockInfo& info5 = gpuData->block(4);
// The parent/child layers appear in reverse order
const SkLayerInfo::BlockInfo& info6 = gpuData->block(7);
const SkLayerInfo::BlockInfo& info7 = gpuData->block(6);
REPORTER_ASSERT(reporter, NULL == info0.fPicture);
REPORTER_ASSERT(reporter, kWidth == info0.fBounds.width() &&
kHeight == info0.fBounds.height());
REPORTER_ASSERT(reporter, info0.fLocalMat.isIdentity());
REPORTER_ASSERT(reporter, info0.fPreMat.isIdentity());
REPORTER_ASSERT(reporter, 0 == info0.fBounds.fLeft && 0 == info0.fBounds.fTop);
REPORTER_ASSERT(reporter, NULL != info0.fPaint);
REPORTER_ASSERT(reporter, !info0.fIsNested && !info0.fHasNestedLayers);
REPORTER_ASSERT(reporter, NULL == info1.fPicture);
REPORTER_ASSERT(reporter, kWidth/2.0 == info1.fBounds.width() &&
kHeight/2.0 == info1.fBounds.height());
REPORTER_ASSERT(reporter, info1.fLocalMat.isIdentity());
REPORTER_ASSERT(reporter, info1.fPreMat.isIdentity());
REPORTER_ASSERT(reporter, kWidth/2.0 == info1.fBounds.fLeft &&
kHeight/2.0 == info1.fBounds.fTop);
REPORTER_ASSERT(reporter, NULL == info1.fPaint);
REPORTER_ASSERT(reporter, !info1.fIsNested &&
info1.fHasNestedLayers); // has a nested SL
REPORTER_ASSERT(reporter, NULL == info2.fPicture);
REPORTER_ASSERT(reporter, kWidth / 2 == info2.fBounds.width() &&
kHeight / 2 == info2.fBounds.height()); // bound reduces size
REPORTER_ASSERT(reporter, !info2.fLocalMat.isIdentity());
REPORTER_ASSERT(reporter, info2.fPreMat.isIdentity());
REPORTER_ASSERT(reporter, kWidth / 2 == info2.fBounds.fLeft && // translated
kHeight / 2 == info2.fBounds.fTop);
REPORTER_ASSERT(reporter, NULL != info2.fPaint);
REPORTER_ASSERT(reporter, info2.fIsNested && !info2.fHasNestedLayers); // is nested
REPORTER_ASSERT(reporter, NULL == info3.fPicture);
REPORTER_ASSERT(reporter, kWidth == info3.fBounds.width() &&
kHeight == info3.fBounds.height());
REPORTER_ASSERT(reporter, info3.fLocalMat.isIdentity());
REPORTER_ASSERT(reporter, info3.fPreMat.isIdentity());
REPORTER_ASSERT(reporter, 0 == info3.fBounds.fLeft && 0 == info3.fBounds.fTop);
REPORTER_ASSERT(reporter, info3.fPaint);
REPORTER_ASSERT(reporter, !info3.fIsNested && !info3.fHasNestedLayers);
REPORTER_ASSERT(reporter, NULL == info4.fPicture);
REPORTER_ASSERT(reporter, kWidth == info4.fBounds.width() &&
kHeight == info4.fBounds.height());
REPORTER_ASSERT(reporter, 0 == info4.fBounds.fLeft && 0 == info4.fBounds.fTop);
REPORTER_ASSERT(reporter, info4.fLocalMat.isIdentity());
REPORTER_ASSERT(reporter, info4.fPreMat.isIdentity());
REPORTER_ASSERT(reporter, info4.fPaint);
REPORTER_ASSERT(reporter, !info4.fIsNested &&
info4.fHasNestedLayers); // has a nested SL
REPORTER_ASSERT(reporter, child == info5.fPicture); // in a child picture
REPORTER_ASSERT(reporter, kWidth == info5.fBounds.width() &&
kHeight == info5.fBounds.height());
REPORTER_ASSERT(reporter, 0 == info5.fBounds.fLeft && 0 == info5.fBounds.fTop);
REPORTER_ASSERT(reporter, info5.fLocalMat.isIdentity());
REPORTER_ASSERT(reporter, info5.fPreMat.isIdentity());
REPORTER_ASSERT(reporter, NULL != info5.fPaint);
REPORTER_ASSERT(reporter, info5.fIsNested && !info5.fHasNestedLayers); // is nested
REPORTER_ASSERT(reporter, NULL == info6.fPicture);
REPORTER_ASSERT(reporter, kWidth-10 == info6.fBounds.width() &&
kHeight-10 == info6.fBounds.height());
REPORTER_ASSERT(reporter, 10 == info6.fBounds.fLeft && 10 == info6.fBounds.fTop);
REPORTER_ASSERT(reporter, info6.fLocalMat.isIdentity());
REPORTER_ASSERT(reporter, info6.fPreMat.isIdentity());
REPORTER_ASSERT(reporter, info6.fPaint);
REPORTER_ASSERT(reporter, !info6.fIsNested &&
info6.fHasNestedLayers); // has a nested SL
REPORTER_ASSERT(reporter, child == info7.fPicture); // in a child picture
REPORTER_ASSERT(reporter, kWidth == info7.fBounds.width() &&
kHeight == info7.fBounds.height());
REPORTER_ASSERT(reporter, 0 == info7.fBounds.fLeft && 0 == info7.fBounds.fTop);
REPORTER_ASSERT(reporter, info7.fLocalMat.isIdentity());
REPORTER_ASSERT(reporter, info7.fPreMat.isIdentity());
REPORTER_ASSERT(reporter, NULL != info7.fPaint);
REPORTER_ASSERT(reporter, info7.fIsNested && !info7.fHasNestedLayers); // is nested
}
}
DrawResult onDraw(SkCanvas* canvas, SkString* errorMsg) override {
if (!fAnim) {
*errorMsg = "No animation.";
return DrawResult::kFail;
}
SkMatrix44 camera,
perspective,
mv;
SkMatrix viewport;
{
float w = this->width();
float h = this->height();
float s = std::min(w, h);
viewport.setTranslate(1, -1);
viewport.postScale(s/2, -s/2);
draw_viewport(canvas, viewport);
}
Sk3Perspective(&perspective, fNear, fFar, fAngle);
Sk3LookAt(&camera, fEye, fCOA, fUp);
mv.postConcat(camera);
mv.postConcat(perspective);
SkPoint pts[8];
Sk3MapPts(pts, mv, fP3, 8);
viewport.mapPoints(pts, 8);
SkPaint paint;
paint.setStyle(SkPaint::kStroke_Style);
SkFont font;
font.setEdging(SkFont::Edging::kAlias);
SkPath cube;
cube.moveTo(pts[0]);
cube.lineTo(pts[2]);
cube.lineTo(pts[6]);
cube.lineTo(pts[4]);
cube.close();
cube.moveTo(pts[1]);
cube.lineTo(pts[3]);
cube.lineTo(pts[7]);
cube.lineTo(pts[5]);
cube.close();
cube.moveTo(pts[0]); cube.lineTo(pts[1]);
cube.moveTo(pts[2]); cube.lineTo(pts[3]);
cube.moveTo(pts[4]); cube.lineTo(pts[5]);
cube.moveTo(pts[6]); cube.lineTo(pts[7]);
canvas->drawPath(cube, paint);
{
SkPoint3 src[4] = {
{ 0, 0, 0 }, { 2, 0, 0 }, { 0, 2, 0 }, { 0, 0, 2 },
};
SkPoint dst[4];
mv.setConcat(perspective, camera);
Sk3MapPts(dst, mv, src, 4);
viewport.mapPoints(dst, 4);
const char* str[3] = { "X", "Y", "Z" };
for (int i = 1; i <= 3; ++i) {
canvas->drawLine(dst[0], dst[i], paint);
}
for (int i = 0; i < 3; ++i) {
canvas->drawString(str[i], dst[i + 1].fX, dst[i + 1].fY, font, paint);
}
}
fAnim->seek(fAnimT);
draw_skia(canvas, mv, viewport, fAnim.get());
return DrawResult::kOk;
}
void test_matrix_max_stretch(skiatest::Reporter* reporter) {
SkMatrix identity;
identity.reset();
REPORTER_ASSERT(reporter, SK_Scalar1 == identity.getMaxStretch());
SkMatrix scale;
scale.setScale(SK_Scalar1 * 2, SK_Scalar1 * 4);
REPORTER_ASSERT(reporter, SK_Scalar1 * 4 == scale.getMaxStretch());
SkMatrix rot90Scale;
rot90Scale.setRotate(90 * SK_Scalar1);
rot90Scale.postScale(SK_Scalar1 / 4, SK_Scalar1 / 2);
REPORTER_ASSERT(reporter, SK_Scalar1 / 2 == rot90Scale.getMaxStretch());
SkMatrix rotate;
rotate.setRotate(128 * SK_Scalar1);
REPORTER_ASSERT(reporter, SkScalarAbs(SK_Scalar1 - rotate.getMaxStretch()) <= SK_ScalarNearlyZero);
SkMatrix translate;
translate.setTranslate(10 * SK_Scalar1, -5 * SK_Scalar1);
REPORTER_ASSERT(reporter, SK_Scalar1 == translate.getMaxStretch());
SkMatrix perspX;
perspX.reset();
perspX.setPerspX(SkScalarToPersp(SK_Scalar1 / 1000));
REPORTER_ASSERT(reporter, -SK_Scalar1 == perspX.getMaxStretch());
SkMatrix perspY;
perspY.reset();
perspY.setPerspX(SkScalarToPersp(-SK_Scalar1 / 500));
REPORTER_ASSERT(reporter, -SK_Scalar1 == perspY.getMaxStretch());
SkMatrix baseMats[] = {scale, rot90Scale, rotate,
translate, perspX, perspY};
SkMatrix mats[2*SK_ARRAY_COUNT(baseMats)];
for (size_t i = 0; i < SK_ARRAY_COUNT(baseMats); ++i) {
mats[i] = baseMats[i];
bool invertable = mats[i].invert(&mats[i + SK_ARRAY_COUNT(baseMats)]);
REPORTER_ASSERT(reporter, invertable);
}
SkRandom rand;
for (int m = 0; m < 1000; ++m) {
SkMatrix mat;
mat.reset();
for (int i = 0; i < 4; ++i) {
int x = rand.nextU() % SK_ARRAY_COUNT(mats);
mat.postConcat(mats[x]);
}
SkScalar stretch = mat.getMaxStretch();
if ((stretch < 0) != mat.hasPerspective()) {
stretch = mat.getMaxStretch();
}
REPORTER_ASSERT(reporter, (stretch < 0) == mat.hasPerspective());
if (mat.hasPerspective()) {
m -= 1; // try another non-persp matrix
continue;
}
// test a bunch of vectors. None should be scaled by more than stretch
// (modulo some error) and we should find a vector that is scaled by
// almost stretch.
static const SkScalar gStretchTol = (105 * SK_Scalar1) / 100;
static const SkScalar gMaxStretchTol = (97 * SK_Scalar1) / 100;
SkScalar max = 0;
SkVector vectors[1000];
for (size_t i = 0; i < SK_ARRAY_COUNT(vectors); ++i) {
vectors[i].fX = rand.nextSScalar1();
vectors[i].fY = rand.nextSScalar1();
if (!vectors[i].normalize()) {
i -= 1;
continue;
}
}
mat.mapVectors(vectors, SK_ARRAY_COUNT(vectors));
for (size_t i = 0; i < SK_ARRAY_COUNT(vectors); ++i) {
SkScalar d = vectors[i].length();
REPORTER_ASSERT(reporter, SkScalarDiv(d, stretch) < gStretchTol);
if (max < d) {
max = d;
}
}
REPORTER_ASSERT(reporter, SkScalarDiv(max, stretch) >= gMaxStretchTol);
}
}
////////////////////////////////////////////////////////////////////////////////
// Create a 8-bit clip mask in alpha
GrTexture* GrClipMaskManager::createAlphaClipMask(int32_t elementsGenID,
InitialState initialState,
const ElementList& elements,
const SkIRect& clipSpaceIBounds) {
SkASSERT(kNone_ClipMaskType == fCurrClipMaskType);
GrTexture* result;
if (this->getMaskTexture(elementsGenID, clipSpaceIBounds, &result, false)) {
fCurrClipMaskType = kAlpha_ClipMaskType;
return result;
}
if (NULL == result) {
fAACache.reset();
return NULL;
}
// The top-left of the mask corresponds to the top-left corner of the bounds.
SkVector clipToMaskOffset = {
SkIntToScalar(-clipSpaceIBounds.fLeft),
SkIntToScalar(-clipSpaceIBounds.fTop)
};
// The texture may be larger than necessary, this rect represents the part of the texture
// we populate with a rasterization of the clip.
SkIRect maskSpaceIBounds = SkIRect::MakeWH(clipSpaceIBounds.width(), clipSpaceIBounds.height());
// Set the matrix so that rendered clip elements are transformed to mask space from clip space.
SkMatrix translate;
translate.setTranslate(clipToMaskOffset);
GrDrawTarget::AutoGeometryAndStatePush agasp(fGpu, GrDrawTarget::kReset_ASRInit, &translate);
GrDrawState* drawState = fGpu->drawState();
// We're drawing a coverage mask and want coverage to be run through the blend function.
drawState->enableState(GrDrawState::kCoverageDrawing_StateBit);
// The scratch texture that we are drawing into can be substantially larger than the mask. Only
// clear the part that we care about.
fGpu->clear(&maskSpaceIBounds,
kAllIn_InitialState == initialState ? 0xffffffff : 0x00000000,
true,
result->asRenderTarget());
// When we use the stencil in the below loop it is important to have this clip installed.
// The second pass that zeros the stencil buffer renders the rect maskSpaceIBounds so the first
// pass must not set values outside of this bounds or stencil values outside the rect won't be
// cleared.
GrDrawTarget::AutoClipRestore acr(fGpu, maskSpaceIBounds);
drawState->enableState(GrDrawState::kClip_StateBit);
GrAutoScratchTexture temp;
// walk through each clip element and perform its set op
for (ElementList::Iter iter = elements.headIter(); iter.get(); iter.next()) {
const Element* element = iter.get();
SkRegion::Op op = element->getOp();
bool invert = element->isInverseFilled();
if (invert || SkRegion::kIntersect_Op == op || SkRegion::kReverseDifference_Op == op) {
GrPathRenderer* pr = NULL;
bool useTemp = !this->canStencilAndDrawElement(result, element, &pr);
GrTexture* dst;
// This is the bounds of the clip element in the space of the alpha-mask. The temporary
// mask buffer can be substantially larger than the actually clip stack element. We
// touch the minimum number of pixels necessary and use decal mode to combine it with
// the accumulator.
SkIRect maskSpaceElementIBounds;
if (useTemp) {
if (invert) {
maskSpaceElementIBounds = maskSpaceIBounds;
} else {
SkRect elementBounds = element->getBounds();
elementBounds.offset(clipToMaskOffset);
elementBounds.roundOut(&maskSpaceElementIBounds);
}
this->getTemp(maskSpaceIBounds.fRight, maskSpaceIBounds.fBottom, &temp);
if (NULL == temp.texture()) {
fAACache.reset();
return NULL;
}
dst = temp.texture();
// clear the temp target and set blend to replace
fGpu->clear(&maskSpaceElementIBounds,
invert ? 0xffffffff : 0x00000000,
true,
dst->asRenderTarget());
setup_boolean_blendcoeffs(drawState, SkRegion::kReplace_Op);
} else {
// draw directly into the result with the stencil set to make the pixels affected
// by the clip shape be non-zero.
dst = result;
GR_STATIC_CONST_SAME_STENCIL(kStencilInElement,
kReplace_StencilOp,
kReplace_StencilOp,
kAlways_StencilFunc,
0xffff,
0xffff,
0xffff);
drawState->setStencil(kStencilInElement);
setup_boolean_blendcoeffs(drawState, op);
}
drawState->setAlpha(invert ? 0x00 : 0xff);
if (!this->drawElement(dst, element, pr)) {
fAACache.reset();
return NULL;
}
if (useTemp) {
// Now draw into the accumulator using the real operation and the temp buffer as a
// texture
this->mergeMask(result,
temp.texture(),
op,
maskSpaceIBounds,
maskSpaceElementIBounds);
} else {
// Draw to the exterior pixels (those with a zero stencil value).
drawState->setAlpha(invert ? 0xff : 0x00);
GR_STATIC_CONST_SAME_STENCIL(kDrawOutsideElement,
kZero_StencilOp,
kZero_StencilOp,
kEqual_StencilFunc,
0xffff,
0x0000,
0xffff);
drawState->setStencil(kDrawOutsideElement);
fGpu->drawSimpleRect(clipSpaceIBounds);
drawState->disableStencil();
}
} else {
// all the remaining ops can just be directly draw into the accumulation buffer
drawState->setAlpha(0xff);
setup_boolean_blendcoeffs(drawState, op);
this->drawElement(result, element);
}
}
fCurrClipMaskType = kAlpha_ClipMaskType;
return result;
}
static SkMatrix translate(SkScalar dx, SkScalar dy) {
SkMatrix matrix;
matrix.setTranslate(dx, dy);
return matrix;
}
static void generateMask(const SkMask& mask, const SkPath& path) {
SkBitmap::Config config;
SkPaint paint;
int srcW = mask.fBounds.width();
int srcH = mask.fBounds.height();
int dstW = srcW;
int dstH = srcH;
int dstRB = mask.fRowBytes;
SkMatrix matrix;
matrix.setTranslate(-SkIntToScalar(mask.fBounds.fLeft),
-SkIntToScalar(mask.fBounds.fTop));
if (SkMask::kBW_Format == mask.fFormat) {
config = SkBitmap::kA1_Config;
paint.setAntiAlias(false);
} else {
config = SkBitmap::kA8_Config;
paint.setAntiAlias(true);
switch (mask.fFormat) {
case SkMask::kA8_Format:
break;
case SkMask::kLCD16_Format:
case SkMask::kLCD32_Format:
// TODO: trigger off LCD orientation
dstW *= 3;
matrix.postScale(SkIntToScalar(3), SK_Scalar1);
dstRB = 0; // signals we need a copy
break;
default:
SkDEBUGFAIL("unexpected mask format");
}
}
SkRasterClip clip;
clip.setRect(SkIRect::MakeWH(dstW, dstH));
SkBitmap bm;
bm.setConfig(config, dstW, dstH, dstRB);
if (0 == dstRB) {
bm.allocPixels();
bm.lockPixels();
} else {
bm.setPixels(mask.fImage);
}
sk_bzero(bm.getPixels(), bm.getSafeSize());
SkDraw draw;
sk_bzero(&draw, sizeof(draw));
draw.fRC = &clip;
draw.fClip = &clip.bwRgn();
draw.fMatrix = &matrix;
draw.fBitmap = &bm;
draw.drawPath(path, paint);
if (0 == dstRB) {
switch (mask.fFormat) {
case SkMask::kLCD16_Format:
pack3xHToLCD16(bm, mask);
break;
case SkMask::kLCD32_Format:
pack3xHToLCD32(bm, mask);
break;
default:
SkDEBUGFAIL("bad format for copyback");
}
}
}
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);
if (!transformBBox(finalMatrix, &surfaceBBox)) {
return;
}
SkMatrix unflip;
unflip.setTranslate(0, SkScalarRoundToScalar(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;
SkScalar width = SkIntToScalar(image->width());
SkScalar height = SkIntToScalar(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(image->width() - 1, 0));
canvas.drawRect(rect, paint);
}
rect = SkRect::MakeLTRB(width, height, surfaceBBox.fRight,
surfaceBBox.fBottom);
if (!rect.isEmpty()) {
paint.setColor(image->getColor(image->width() - 1,
image->height() - 1));
canvas.drawRect(rect, paint);
}
rect = SkRect::MakeLTRB(surfaceBBox.fLeft, height, 0,
surfaceBBox.fBottom);
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 (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(image->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, image->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, image->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, false);
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();
}
static void test_treatAsSprite(skiatest::Reporter* reporter) {
SkMatrix mat;
SkISize size;
SkRandom rand;
SkPaint noaaPaint;
SkPaint aaPaint;
aaPaint.setAntiAlias(true);
// assert: translate-only no-aa can always be treated as sprite
for (int i = 0; i < 1000; ++i) {
rand_matrix(&mat, rand, SkMatrix::kTranslate_Mask);
for (int j = 0; j < 1000; ++j) {
rand_size(&size, rand);
REPORTER_ASSERT(reporter, SkTreatAsSprite(mat, size, noaaPaint));
}
}
// assert: rotate/perspect is never treated as sprite
for (int i = 0; i < 1000; ++i) {
rand_matrix(&mat, rand, SkMatrix::kAffine_Mask | SkMatrix::kPerspective_Mask);
for (int j = 0; j < 1000; ++j) {
rand_size(&size, rand);
REPORTER_ASSERT(reporter, !SkTreatAsSprite(mat, size, noaaPaint));
REPORTER_ASSERT(reporter, !SkTreatAsSprite(mat, size, aaPaint));
}
}
size.set(500, 600);
const SkScalar tooMuchSubpixel = 100.1f;
mat.setTranslate(tooMuchSubpixel, 0);
REPORTER_ASSERT(reporter, !SkTreatAsSprite(mat, size, aaPaint));
mat.setTranslate(0, tooMuchSubpixel);
REPORTER_ASSERT(reporter, !SkTreatAsSprite(mat, size, aaPaint));
const SkScalar tinySubPixel = 100.02f;
mat.setTranslate(tinySubPixel, 0);
REPORTER_ASSERT(reporter, SkTreatAsSprite(mat, size, aaPaint));
mat.setTranslate(0, tinySubPixel);
REPORTER_ASSERT(reporter, SkTreatAsSprite(mat, size, aaPaint));
const SkScalar twoThirds = SK_Scalar1 * 2 / 3;
const SkScalar bigScale = (size.width() + twoThirds) / size.width();
mat.setScale(bigScale, bigScale);
REPORTER_ASSERT(reporter, !SkTreatAsSprite(mat, size, noaaPaint));
REPORTER_ASSERT(reporter, !SkTreatAsSprite(mat, size, aaPaint));
const SkScalar oneThird = SK_Scalar1 / 3;
const SkScalar smallScale = (size.width() + oneThird) / size.width();
mat.setScale(smallScale, smallScale);
REPORTER_ASSERT(reporter, SkTreatAsSprite(mat, size, noaaPaint));
REPORTER_ASSERT(reporter, !SkTreatAsSprite(mat, size, aaPaint));
const SkScalar oneFortyth = SK_Scalar1 / 40;
const SkScalar tinyScale = (size.width() + oneFortyth) / size.width();
mat.setScale(tinyScale, tinyScale);
REPORTER_ASSERT(reporter, SkTreatAsSprite(mat, size, noaaPaint));
REPORTER_ASSERT(reporter, SkTreatAsSprite(mat, size, aaPaint));
}
void SkScalerContext::getImage(const SkGlyph& origGlyph) {
const SkGlyph* glyph = &origGlyph;
SkGlyph tmpGlyph;
if (fMaskFilter) { // restore the prefilter bounds
tmpGlyph.init(origGlyph.fID);
// need the original bounds, sans our maskfilter
SkMaskFilter* mf = fMaskFilter;
fMaskFilter = NULL; // temp disable
this->getMetrics(&tmpGlyph);
fMaskFilter = mf; // restore
tmpGlyph.fImage = origGlyph.fImage;
// we need the prefilter bounds to be <= filter bounds
SkASSERT(tmpGlyph.fWidth <= origGlyph.fWidth);
SkASSERT(tmpGlyph.fHeight <= origGlyph.fHeight);
glyph = &tmpGlyph;
}
if (fRec.fFrameWidth > 0 || fPathEffect != NULL || fRasterizer != NULL) {
SkPath devPath, fillPath;
SkMatrix fillToDevMatrix;
this->internalGetPath(*glyph, &fillPath, &devPath, &fillToDevMatrix);
const bool lcdMode = fRec.fMaskFormat == SkMask::kHorizontalLCD_Format ||
fRec.fMaskFormat == SkMask::kVerticalLCD_Format;
if (fRasterizer) {
SkMask mask;
glyph->toMask(&mask);
mask.fFormat = SkMask::kA8_Format;
sk_bzero(glyph->fImage, mask.computeImageSize());
if (!fRasterizer->rasterize(fillPath, fillToDevMatrix, NULL,
fMaskFilter, &mask,
SkMask::kJustRenderImage_CreateMode)) {
return;
}
} else {
SkBitmap bm;
SkBitmap::Config config;
SkMatrix matrix;
SkRegion clip;
SkPaint paint;
SkDraw draw;
if (SkMask::kA8_Format == fRec.fMaskFormat || lcdMode) {
config = SkBitmap::kA8_Config;
paint.setAntiAlias(true);
} else {
SkASSERT(SkMask::kBW_Format == fRec.fMaskFormat);
config = SkBitmap::kA1_Config;
paint.setAntiAlias(false);
}
clip.setRect(0, 0, glyph->fWidth, glyph->fHeight);
matrix.setTranslate(-SkIntToScalar(glyph->fLeft),
-SkIntToScalar(glyph->fTop));
bm.setConfig(config, glyph->fWidth, glyph->fHeight,
glyph->rowBytes());
bm.setPixels(glyph->fImage);
sk_bzero(glyph->fImage, bm.height() * bm.rowBytes());
draw.fClip = &clip;
draw.fMatrix = &matrix;
draw.fBitmap = &bm;
draw.fBounder = NULL;
draw.drawPath(devPath, paint);
}
if (lcdMode)
glyph->expandA8ToLCD();
} else {
this->getGlyphContext(*glyph)->generateImage(*glyph);
}
if (fMaskFilter) {
SkMask srcM, dstM;
SkMatrix matrix;
// the src glyph image shouldn't be 3D
SkASSERT(SkMask::k3D_Format != glyph->fMaskFormat);
glyph->toMask(&srcM);
fRec.getMatrixFrom2x2(&matrix);
if (fMaskFilter->filterMask(&dstM, srcM, matrix, NULL)) {
int width = SkFastMin32(origGlyph.fWidth, dstM.fBounds.width());
int height = SkFastMin32(origGlyph.fHeight, dstM.fBounds.height());
int dstRB = origGlyph.rowBytes();
int srcRB = dstM.fRowBytes;
const uint8_t* src = (const uint8_t*)dstM.fImage;
uint8_t* dst = (uint8_t*)origGlyph.fImage;
if (SkMask::k3D_Format == dstM.fFormat) {
// we have to copy 3 times as much
height *= 3;
}
// clean out our glyph, since it may be larger than dstM
//sk_bzero(dst, height * dstRB);
while (--height >= 0) {
memcpy(dst, src, width);
src += srcRB;
dst += dstRB;
}
SkMask::FreeImage(dstM.fImage);
}
}
// check to see if we should filter the alpha channel
if (NULL == fMaskFilter &&
fRec.fMaskFormat != SkMask::kBW_Format &&
fRec.fMaskFormat != SkMask::kLCD16_Format &&
(fRec.fFlags & (kGammaForBlack_Flag | kGammaForWhite_Flag)) != 0)
{
const uint8_t* table = (fRec.fFlags & kGammaForBlack_Flag) ? gBlackGammaTable : gWhiteGammaTable;
if (NULL != table)
{
uint8_t* dst = (uint8_t*)origGlyph.fImage;
unsigned rowBytes = origGlyph.rowBytes();
for (int y = origGlyph.fHeight - 1; y >= 0; --y)
{
for (int x = origGlyph.fWidth - 1; x >= 0; --x)
dst[x] = table[dst[x]];
dst += rowBytes;
}
}
}
}
static void test_matrix_is_similarity(skiatest::Reporter* reporter) {
SkMatrix mat;
// identity
mat.setIdentity();
REPORTER_ASSERT(reporter, mat.isSimilarity());
// translation only
mat.reset();
mat.setTranslate(SkIntToScalar(100), SkIntToScalar(100));
REPORTER_ASSERT(reporter, mat.isSimilarity());
// scale with same size
mat.reset();
mat.setScale(SkIntToScalar(15), SkIntToScalar(15));
REPORTER_ASSERT(reporter, mat.isSimilarity());
// scale with one negative
mat.reset();
mat.setScale(SkIntToScalar(-15), SkIntToScalar(15));
REPORTER_ASSERT(reporter, mat.isSimilarity());
// scale with different size
mat.reset();
mat.setScale(SkIntToScalar(15), SkIntToScalar(20));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
// scale with same size at a pivot point
mat.reset();
mat.setScale(SkIntToScalar(15), SkIntToScalar(15),
SkIntToScalar(2), SkIntToScalar(2));
REPORTER_ASSERT(reporter, mat.isSimilarity());
// scale with different size at a pivot point
mat.reset();
mat.setScale(SkIntToScalar(15), SkIntToScalar(20),
SkIntToScalar(2), SkIntToScalar(2));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
// skew with same size
mat.reset();
mat.setSkew(SkIntToScalar(15), SkIntToScalar(15));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
// skew with different size
mat.reset();
mat.setSkew(SkIntToScalar(15), SkIntToScalar(20));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
// skew with same size at a pivot point
mat.reset();
mat.setSkew(SkIntToScalar(15), SkIntToScalar(15),
SkIntToScalar(2), SkIntToScalar(2));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
// skew with different size at a pivot point
mat.reset();
mat.setSkew(SkIntToScalar(15), SkIntToScalar(20),
SkIntToScalar(2), SkIntToScalar(2));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
// perspective x
mat.reset();
mat.setPerspX(SkScalarToPersp(SK_Scalar1 / 2));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
// perspective y
mat.reset();
mat.setPerspY(SkScalarToPersp(SK_Scalar1 / 2));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
// rotate
for (int angle = 0; angle < 360; ++angle) {
mat.reset();
mat.setRotate(SkIntToScalar(angle));
#ifndef SK_CPU_ARM64
REPORTER_ASSERT(reporter, mat.isSimilarity());
#else
// 64-bit ARM devices built with -O2 and -ffp-contract=fast have a loss
// of precision and require that we have a higher tolerance
REPORTER_ASSERT(reporter, mat.isSimilarity(SK_ScalarNearlyZero + 0.00010113f));
#endif
}
// see if there are any accumulated precision issues
mat.reset();
for (int i = 1; i < 360; i++) {
mat.postRotate(SkIntToScalar(1));
}
REPORTER_ASSERT(reporter, mat.isSimilarity());
// rotate + translate
mat.reset();
mat.setRotate(SkIntToScalar(30));
mat.postTranslate(SkIntToScalar(10), SkIntToScalar(20));
REPORTER_ASSERT(reporter, mat.isSimilarity());
// rotate + uniform scale
mat.reset();
mat.setRotate(SkIntToScalar(30));
mat.postScale(SkIntToScalar(2), SkIntToScalar(2));
REPORTER_ASSERT(reporter, mat.isSimilarity());
// rotate + non-uniform scale
mat.reset();
mat.setRotate(SkIntToScalar(30));
mat.postScale(SkIntToScalar(3), SkIntToScalar(2));
REPORTER_ASSERT(reporter, !mat.isSimilarity());
// all zero
mat.setAll(0, 0, 0, 0, 0, 0, 0, 0, 0);
REPORTER_ASSERT(reporter, !mat.isSimilarity());
// all zero except perspective
mat.setAll(0, 0, 0, 0, 0, 0, 0, 0, SK_Scalar1);
REPORTER_ASSERT(reporter, !mat.isSimilarity());
// scales zero, only skews
mat.setAll(0, SK_Scalar1, 0,
SK_Scalar1, 0, 0,
0, 0, SkMatrix::I()[8]);
REPORTER_ASSERT(reporter, mat.isSimilarity());
}
void onDraw(SkCanvas* canvas) override {
fShader = gBleedRec[fBT].fShaderMaker();
canvas->clear(SK_ColorGRAY);
SkTDArray<SkMatrix> matrices;
// Draw with identity
*matrices.append() = SkMatrix::I();
// Draw with rotation and scale down in x, up in y.
SkMatrix m;
constexpr SkScalar kBottom = SkIntToScalar(kRow4Y + kBlockSize + kBlockSpacing);
m.setTranslate(0, kBottom);
m.preRotate(15.f, 0, kBottom + kBlockSpacing);
m.preScale(0.71f, 1.22f);
*matrices.append() = m;
// Align the next set with the middle of the previous in y, translated to the right in x.
SkPoint corners[] = {{0, 0}, { 0, kBottom }, { kWidth, kBottom }, {kWidth, 0} };
matrices[matrices.count()-1].mapPoints(corners, 4);
SkScalar y = (corners[0].fY + corners[1].fY + corners[2].fY + corners[3].fY) / 4;
SkScalar x = SkTMax(SkTMax(corners[0].fX, corners[1].fX),
SkTMax(corners[2].fX, corners[3].fX));
m.setTranslate(x, y);
m.preScale(0.2f, 0.2f);
*matrices.append() = m;
SkScalar maxX = 0;
for (int antiAlias = 0; antiAlias < 2; ++antiAlias) {
canvas->save();
canvas->translate(maxX, 0);
for (int m = 0; m < matrices.count(); ++m) {
canvas->save();
canvas->concat(matrices[m]);
bool aa = SkToBool(antiAlias);
// First draw a column with no bleeding and no filtering
this->drawCase1(canvas, kCol0X, kRow0Y, aa, SkCanvas::kStrict_SrcRectConstraint, kNone_SkFilterQuality);
this->drawCase2(canvas, kCol0X, kRow1Y, aa, SkCanvas::kStrict_SrcRectConstraint, kNone_SkFilterQuality);
this->drawCase3(canvas, kCol0X, kRow2Y, aa, SkCanvas::kStrict_SrcRectConstraint, kNone_SkFilterQuality);
this->drawCase4(canvas, kCol0X, kRow3Y, aa, SkCanvas::kStrict_SrcRectConstraint, kNone_SkFilterQuality);
this->drawCase5(canvas, kCol0X, kRow4Y, aa, SkCanvas::kStrict_SrcRectConstraint, kNone_SkFilterQuality);
// Then draw a column with no bleeding and low filtering
this->drawCase1(canvas, kCol1X, kRow0Y, aa, SkCanvas::kStrict_SrcRectConstraint, kLow_SkFilterQuality);
this->drawCase2(canvas, kCol1X, kRow1Y, aa, SkCanvas::kStrict_SrcRectConstraint, kLow_SkFilterQuality);
this->drawCase3(canvas, kCol1X, kRow2Y, aa, SkCanvas::kStrict_SrcRectConstraint, kLow_SkFilterQuality);
this->drawCase4(canvas, kCol1X, kRow3Y, aa, SkCanvas::kStrict_SrcRectConstraint, kLow_SkFilterQuality);
this->drawCase5(canvas, kCol1X, kRow4Y, aa, SkCanvas::kStrict_SrcRectConstraint, kLow_SkFilterQuality);
// Then draw a column with no bleeding and high filtering
this->drawCase1(canvas, kCol2X, kRow0Y, aa, SkCanvas::kStrict_SrcRectConstraint, kHigh_SkFilterQuality);
this->drawCase2(canvas, kCol2X, kRow1Y, aa, SkCanvas::kStrict_SrcRectConstraint, kHigh_SkFilterQuality);
this->drawCase3(canvas, kCol2X, kRow2Y, aa, SkCanvas::kStrict_SrcRectConstraint, kHigh_SkFilterQuality);
this->drawCase4(canvas, kCol2X, kRow3Y, aa, SkCanvas::kStrict_SrcRectConstraint, kHigh_SkFilterQuality);
this->drawCase5(canvas, kCol2X, kRow4Y, aa, SkCanvas::kStrict_SrcRectConstraint, kHigh_SkFilterQuality);
// Then draw a column with bleeding and no filtering (bleed should have no effect w/out blur)
this->drawCase1(canvas, kCol3X, kRow0Y, aa, SkCanvas::kFast_SrcRectConstraint, kNone_SkFilterQuality);
this->drawCase2(canvas, kCol3X, kRow1Y, aa, SkCanvas::kFast_SrcRectConstraint, kNone_SkFilterQuality);
this->drawCase3(canvas, kCol3X, kRow2Y, aa, SkCanvas::kFast_SrcRectConstraint, kNone_SkFilterQuality);
this->drawCase4(canvas, kCol3X, kRow3Y, aa, SkCanvas::kFast_SrcRectConstraint, kNone_SkFilterQuality);
this->drawCase5(canvas, kCol3X, kRow4Y, aa, SkCanvas::kFast_SrcRectConstraint, kNone_SkFilterQuality);
// Then draw a column with bleeding and low filtering
this->drawCase1(canvas, kCol4X, kRow0Y, aa, SkCanvas::kFast_SrcRectConstraint, kLow_SkFilterQuality);
this->drawCase2(canvas, kCol4X, kRow1Y, aa, SkCanvas::kFast_SrcRectConstraint, kLow_SkFilterQuality);
this->drawCase3(canvas, kCol4X, kRow2Y, aa, SkCanvas::kFast_SrcRectConstraint, kLow_SkFilterQuality);
this->drawCase4(canvas, kCol4X, kRow3Y, aa, SkCanvas::kFast_SrcRectConstraint, kLow_SkFilterQuality);
this->drawCase5(canvas, kCol4X, kRow4Y, aa, SkCanvas::kFast_SrcRectConstraint, kLow_SkFilterQuality);
// Finally draw a column with bleeding and high filtering
this->drawCase1(canvas, kCol5X, kRow0Y, aa, SkCanvas::kFast_SrcRectConstraint, kHigh_SkFilterQuality);
this->drawCase2(canvas, kCol5X, kRow1Y, aa, SkCanvas::kFast_SrcRectConstraint, kHigh_SkFilterQuality);
this->drawCase3(canvas, kCol5X, kRow2Y, aa, SkCanvas::kFast_SrcRectConstraint, kHigh_SkFilterQuality);
this->drawCase4(canvas, kCol5X, kRow3Y, aa, SkCanvas::kFast_SrcRectConstraint, kHigh_SkFilterQuality);
this->drawCase5(canvas, kCol5X, kRow4Y, aa, SkCanvas::kFast_SrcRectConstraint, kHigh_SkFilterQuality);
SkPoint corners[] = { { 0, 0 },{ 0, kBottom },{ kWidth, kBottom },{ kWidth, 0 } };
matrices[m].mapPoints(corners, 4);
SkScalar x = kBlockSize + SkTMax(SkTMax(corners[0].fX, corners[1].fX),
SkTMax(corners[2].fX, corners[3].fX));
maxX = SkTMax(maxX, x);
canvas->restore();
}
canvas->restore();
}
}
void GrLayerHoister::DrawLayers(const SkTDArray<GrHoistedLayer>& atlased,
const SkTDArray<GrHoistedLayer>& nonAtlased,
const SkTDArray<GrHoistedLayer>& recycled,
GrReplacements* replacements) {
// Render the atlased layers that require it
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 paint;
paint.setColor(SK_ColorTRANSPARENT);
paint.setXfermode(SkXfermode::Create(SkXfermode::kSrc_Mode))->unref();
for (int i = 0; i < atlased.count(); ++i) {
GrCachedLayer* layer = atlased[i].fLayer;
const SkPicture* pict = atlased[i].fPicture;
const SkIPoint offset = atlased[i].fOffset;
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
// TODO: ensure none of the atlased layers contain a clear call!
atlasCanvas->drawRect(bound, paint);
// info.fCTM 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.postTranslate(bound.fLeft, bound.fTop);
atlasCanvas->translate(SkIntToScalar(-offset.fX),
SkIntToScalar(-offset.fY));
atlasCanvas->translate(bound.fLeft, bound.fTop);
atlasCanvas->concat(atlased[i].fCTM);
SkRecordPartialDraw(*pict->fRecord.get(), atlasCanvas, bound,
layer->start()+1, layer->stop(), initialCTM);
atlasCanvas->restore();
}
atlasCanvas->flush();
}
// Render the non-atlased layers that require it
for (int i = 0; i < nonAtlased.count(); ++i) {
GrCachedLayer* layer = nonAtlased[i].fLayer;
const SkPicture* pict = nonAtlased[i].fPicture;
const SkIPoint offset = nonAtlased[i].fOffset;
// Each non-atlased layer has its own GrTexture
SkAutoTUnref<SkSurface> surface(SkSurface::NewRenderTargetDirect(
layer->texture()->asRenderTarget(), NULL));
SkCanvas* layerCanvas = surface->getCanvas();
// 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()));
layerCanvas->clipRect(bound); // TODO: still useful?
layerCanvas->clear(SK_ColorTRANSPARENT);
SkMatrix initialCTM;
initialCTM.setTranslate(SkIntToScalar(-offset.fX),
SkIntToScalar(-offset.fY));
layerCanvas->translate(SkIntToScalar(-offset.fX),
SkIntToScalar(-offset.fY));
layerCanvas->concat(nonAtlased[i].fCTM);
SkRecordPartialDraw(*pict->fRecord.get(), layerCanvas, bound,
layer->start()+1, layer->stop(), initialCTM);
layerCanvas->flush();
}
convert_layers_to_replacements(atlased, replacements);
convert_layers_to_replacements(nonAtlased, replacements);
convert_layers_to_replacements(recycled, replacements);
}
void GrStencilAndCoverTextContext::init(const GrPaint& paint,
const SkPaint& skPaint,
size_t textByteLength,
RenderMode renderMode,
SkScalar textTranslateY) {
GrTextContext::init(paint, skPaint);
fContextInitialMatrix = fContext->getMatrix();
const bool otherBackendsWillDrawAsPaths =
SkDraw::ShouldDrawTextAsPaths(skPaint, fContextInitialMatrix);
fNeedsDeviceSpaceGlyphs = !otherBackendsWillDrawAsPaths &&
kMaxAccuracy_RenderMode == renderMode &&
SkToBool(fContextInitialMatrix.getType() &
(SkMatrix::kScale_Mask | SkMatrix::kAffine_Mask));
if (fNeedsDeviceSpaceGlyphs) {
// SkDraw::ShouldDrawTextAsPaths takes care of perspective transforms.
SkASSERT(!fContextInitialMatrix.hasPerspective());
SkASSERT(0 == textTranslateY); // TODO: Handle textTranslateY in device-space usecase.
fTextRatio = fTextInverseRatio = 1.0f;
// Glyphs loaded by GPU path rendering have an inverted y-direction.
SkMatrix m;
m.setScale(1, -1);
fContext->setMatrix(m);
// Post-flip the initial matrix so we're left with just the flip after
// the paint preConcats the inverse.
m = fContextInitialMatrix;
m.postScale(1, -1);
fPaint.localCoordChangeInverse(m);
// The whole shape (including stroke) will be baked into the glyph outlines. Make
// NVPR just fill the baked shapes.
fGlyphCache = fSkPaint.detachCache(&fDeviceProperties, &fContextInitialMatrix, false);
fGlyphs = get_gr_glyphs(fContext, fGlyphCache->getScalerContext()->getTypeface(),
&fGlyphCache->getDescriptor(),
SkStrokeRec(SkStrokeRec::kFill_InitStyle));
} else {
// Don't bake strokes into the glyph outlines. We will stroke the glyphs
// using the GPU instead. This is the fast path.
SkStrokeRec gpuStroke = SkStrokeRec(fSkPaint);
fSkPaint.setStyle(SkPaint::kFill_Style);
if (gpuStroke.isHairlineStyle()) {
// Approximate hairline stroke.
SkScalar strokeWidth = SK_Scalar1 /
(SkVector::Make(fContextInitialMatrix.getScaleX(),
fContextInitialMatrix.getSkewY()).length());
gpuStroke.setStrokeStyle(strokeWidth, false /*strokeAndFill*/);
} else if (fSkPaint.isFakeBoldText() &&
#ifdef SK_USE_FREETYPE_EMBOLDEN
kMaxPerformance_RenderMode == renderMode &&
#endif
SkStrokeRec::kStroke_Style != gpuStroke.getStyle()) {
// Instead of baking fake bold into the glyph outlines, do it with the GPU stroke.
SkScalar fakeBoldScale = SkScalarInterpFunc(fSkPaint.getTextSize(),
kStdFakeBoldInterpKeys,
kStdFakeBoldInterpValues,
kStdFakeBoldInterpLength);
SkScalar extra = SkScalarMul(fSkPaint.getTextSize(), fakeBoldScale);
gpuStroke.setStrokeStyle(gpuStroke.needToApply() ? gpuStroke.getWidth() + extra : extra,
true /*strokeAndFill*/);
fSkPaint.setFakeBoldText(false);
}
bool canUseRawPaths;
if (otherBackendsWillDrawAsPaths || kMaxPerformance_RenderMode == renderMode) {
// We can draw the glyphs from canonically sized paths.
fTextRatio = fSkPaint.getTextSize() / SkPaint::kCanonicalTextSizeForPaths;
fTextInverseRatio = SkPaint::kCanonicalTextSizeForPaths / fSkPaint.getTextSize();
// Compensate for the glyphs being scaled by fTextRatio.
if (!gpuStroke.isFillStyle()) {
gpuStroke.setStrokeStyle(gpuStroke.getWidth() / fTextRatio,
SkStrokeRec::kStrokeAndFill_Style == gpuStroke.getStyle());
}
fSkPaint.setLinearText(true);
fSkPaint.setLCDRenderText(false);
fSkPaint.setAutohinted(false);
fSkPaint.setHinting(SkPaint::kNo_Hinting);
fSkPaint.setSubpixelText(true);
fSkPaint.setTextSize(SkIntToScalar(SkPaint::kCanonicalTextSizeForPaths));
canUseRawPaths = SK_Scalar1 == fSkPaint.getTextScaleX() &&
0 == fSkPaint.getTextSkewX() &&
!fSkPaint.isFakeBoldText() &&
!fSkPaint.isVerticalText();
} else {
fTextRatio = fTextInverseRatio = 1.0f;
canUseRawPaths = false;
}
SkMatrix textMatrix;
textMatrix.setTranslate(0, textTranslateY);
// Glyphs loaded by GPU path rendering have an inverted y-direction.
textMatrix.preScale(fTextRatio, -fTextRatio);
fPaint.localCoordChange(textMatrix);
fContext->concatMatrix(textMatrix);
fGlyphCache = fSkPaint.detachCache(&fDeviceProperties, NULL, false);
fGlyphs = canUseRawPaths ?
get_gr_glyphs(fContext, fSkPaint.getTypeface(), NULL, gpuStroke) :
get_gr_glyphs(fContext, fGlyphCache->getScalerContext()->getTypeface(),
&fGlyphCache->getDescriptor(), gpuStroke);
}
fStateRestore.set(fDrawTarget->drawState());
fDrawTarget->drawState()->setFromPaint(fPaint, fContext->getMatrix(),
fContext->getRenderTarget());
GR_STATIC_CONST_SAME_STENCIL(kStencilPass,
kZero_StencilOp,
kZero_StencilOp,
kNotEqual_StencilFunc,
0xffff,
0x0000,
0xffff);
*fDrawTarget->drawState()->stencil() = kStencilPass;
SkASSERT(0 == fPendingGlyphCount);
}