// Compute the source rect and return false if it is empty.
static bool compute_source_rect(const SkLayerInfo::BlockInfo& info, const SkMatrix& initialMat,
const SkIRect& dstIR, SkIRect* srcIR) {
SkIRect clipBounds = dstIR;
SkMatrix totMat = initialMat;
totMat.preConcat(info.fPreMat);
totMat.preConcat(info.fLocalMat);
if (info.fPaint && info.fPaint->getImageFilter()) {
info.fPaint->getImageFilter()->filterBounds(clipBounds, totMat, &clipBounds);
}
if (!info.fSrcBounds.isEmpty()) {
SkRect r;
totMat.mapRect(&r, info.fSrcBounds);
r.roundOut(srcIR);
if (!srcIR->intersect(clipBounds)) {
return false;
}
} else {
*srcIR = clipBounds;
}
return true;
}
sk_sp<GrFragmentProcessor> SkPerlinNoiseShader::asFragmentProcessor(const AsFPArgs& args) const {
SkASSERT(args.fContext);
SkMatrix localMatrix = this->getLocalMatrix();
if (args.fLocalMatrix) {
localMatrix.preConcat(*args.fLocalMatrix);
}
SkMatrix matrix = *args.fViewMatrix;
matrix.preConcat(localMatrix);
if (0 == fNumOctaves) {
if (kFractalNoise_Type == fType) {
// Extract the incoming alpha and emit rgba = (a/4, a/4, a/4, a/2)
// TODO: Either treat the output of this shader as sRGB or allow client to specify a
// color space of the noise. Either way, this case (and the GLSL) need to convert to
// the destination.
sk_sp<GrFragmentProcessor> inner(
GrConstColorProcessor::Make(GrColor4f::FromGrColor(0x80404040),
GrConstColorProcessor::kModulateRGBA_InputMode));
return GrFragmentProcessor::MulOutputByInputAlpha(std::move(inner));
}
// Emit zero.
return GrConstColorProcessor::Make(GrColor4f::TransparentBlack(),
GrConstColorProcessor::kIgnore_InputMode);
}
// Either we don't stitch tiles, either we have a valid tile size
SkASSERT(!fStitchTiles || !fTileSize.isEmpty());
SkPerlinNoiseShader::PaintingData* paintingData =
new PaintingData(fTileSize, fSeed, fBaseFrequencyX, fBaseFrequencyY, matrix);
sk_sp<GrTextureProxy> permutationsProxy(GrMakeCachedBitmapProxy(
args.fContext->resourceProvider(),
paintingData->getPermutationsBitmap()));
sk_sp<GrTextureProxy> noiseProxy(GrMakeCachedBitmapProxy(args.fContext->resourceProvider(),
paintingData->getNoiseBitmap()));
SkMatrix m = *args.fViewMatrix;
m.setTranslateX(-localMatrix.getTranslateX() + SK_Scalar1);
m.setTranslateY(-localMatrix.getTranslateY() + SK_Scalar1);
if (permutationsProxy && noiseProxy) {
sk_sp<GrFragmentProcessor> inner(
GrPerlinNoiseEffect::Make(args.fContext->resourceProvider(),
fType,
fNumOctaves,
fStitchTiles,
paintingData,
std::move(permutationsProxy),
std::move(noiseProxy),
m));
return GrFragmentProcessor::MulOutputByInputAlpha(std::move(inner));
}
delete paintingData;
return nullptr;
}
const GrFragmentProcessor* SkPerlinNoiseShader::asFragmentProcessor(
GrContext* context,
const SkMatrix& viewM,
const SkMatrix* externalLocalMatrix,
SkFilterQuality) const {
SkASSERT(context);
SkMatrix localMatrix = this->getLocalMatrix();
if (externalLocalMatrix) {
localMatrix.preConcat(*externalLocalMatrix);
}
SkMatrix matrix = viewM;
matrix.preConcat(localMatrix);
if (0 == fNumOctaves) {
if (kFractalNoise_Type == fType) {
// Extract the incoming alpha and emit rgba = (a/4, a/4, a/4, a/2)
SkAutoTUnref<const GrFragmentProcessor> inner(
GrConstColorProcessor::Create(0x80404040,
GrConstColorProcessor::kModulateRGBA_InputMode));
return GrFragmentProcessor::MulOutputByInputAlpha(inner);
}
// Emit zero.
return GrConstColorProcessor::Create(0x0, GrConstColorProcessor::kIgnore_InputMode);
}
// Either we don't stitch tiles, either we have a valid tile size
SkASSERT(!fStitchTiles || !fTileSize.isEmpty());
SkPerlinNoiseShader::PaintingData* paintingData =
new PaintingData(fTileSize, fSeed, fBaseFrequencyX, fBaseFrequencyY, matrix);
SkAutoTUnref<GrTexture> permutationsTexture(
GrRefCachedBitmapTexture(context, paintingData->getPermutationsBitmap(),
GrTextureParams::ClampNoFilter()));
SkAutoTUnref<GrTexture> noiseTexture(
GrRefCachedBitmapTexture(context, paintingData->getNoiseBitmap(),
GrTextureParams::ClampNoFilter()));
SkMatrix m = viewM;
m.setTranslateX(-localMatrix.getTranslateX() + SK_Scalar1);
m.setTranslateY(-localMatrix.getTranslateY() + SK_Scalar1);
if ((permutationsTexture) && (noiseTexture)) {
SkAutoTUnref<GrFragmentProcessor> inner(
GrPerlinNoiseEffect::Create(fType,
fNumOctaves,
fStitchTiles,
paintingData,
permutationsTexture, noiseTexture,
m));
return GrFragmentProcessor::MulOutputByInputAlpha(inner);
}
delete paintingData;
return nullptr;
}
SkPerlinNoiseShader::PerlinNoiseShaderContext::PerlinNoiseShaderContext(
const SkPerlinNoiseShader& shader, const ContextRec& rec)
: INHERITED(shader, rec)
{
SkMatrix newMatrix = *rec.fMatrix;
newMatrix.preConcat(shader.getLocalMatrix());
if (rec.fLocalMatrix) {
newMatrix.preConcat(*rec.fLocalMatrix);
}
// This (1,1) translation is due to WebKit's 1 based coordinates for the noise
// (as opposed to 0 based, usually). The same adjustment is in the setData() function.
fMatrix.setTranslate(-newMatrix.getTranslateX() + SK_Scalar1, -newMatrix.getTranslateY() + SK_Scalar1);
fPaintingData = SkNEW_ARGS(PaintingData, (shader.fTileSize, shader.fSeed, shader.fBaseFrequencyX, shader.fBaseFrequencyY, newMatrix));
}
void GrBlurUtils::drawPathWithMaskFilter(GrContext* context,
GrDrawContext* drawContext,
const GrClip& clip,
const SkPath& origPath,
const SkPaint& paint,
const SkMatrix& origViewMatrix,
const SkMatrix* prePathMatrix,
const SkIRect& clipBounds,
bool pathIsMutable) {
SkASSERT(!pathIsMutable || origPath.isVolatile());
GrStyle style(paint);
// If we have a prematrix, apply it to the path, optimizing for the case
// where the original path can in fact be modified in place (even though
// its parameter type is const).
const SkPath* path = &origPath;
SkTLazy<SkPath> tmpPath;
SkMatrix viewMatrix = origViewMatrix;
if (prePathMatrix) {
// Styling, blurs, and shading are supposed to be applied *after* the prePathMatrix.
if (!paint.getMaskFilter() && !paint.getShader() && !style.applies()) {
viewMatrix.preConcat(*prePathMatrix);
} else {
SkPath* result = pathIsMutable ? const_cast<SkPath*>(path) : tmpPath.init();
pathIsMutable = true;
path->transform(*prePathMatrix, result);
path = result;
result->setIsVolatile(true);
}
}
// at this point we're done with prePathMatrix
SkDEBUGCODE(prePathMatrix = (const SkMatrix*)0x50FF8001;)
void Layer::localToAncestor(const Layer* ancestor, SkMatrix* matrix) const {
if (this == ancestor) {
matrix->setIdentity();
return;
}
getLocalTransform(matrix);
// Fixed position layers simply use the root layer's transform.
if (shouldInheritFromRootTransform()) {
ASSERT(!ancestor);
matrix->postConcat(getRootLayer()->getMatrix());
return;
}
// Apply the local and child transforms for every layer between this layer
// and ancestor.
ASSERT(isAncestor(ancestor));
for (const Layer* layer = this->fParent; layer != ancestor; layer = layer->fParent) {
SkMatrix tmp;
layer->getLocalTransform(&tmp);
tmp.preConcat(layer->getChildrenMatrix());
matrix->postConcat(tmp);
}
// If ancestor is not the root layer, apply its child transformation too.
if (ancestor)
matrix->postConcat(ancestor->getChildrenMatrix());
}
// https://www.w3.org/TR/SVG/coords.html#TransformAttribute
bool SkSVGAttributeParser::parseTransform(SkSVGTransformType* t) {
SkMatrix matrix = SkMatrix::I();
bool parsed = false;
while (true) {
SkMatrix m;
if (!( this->parseMatrixToken(&m)
|| this->parseTranslateToken(&m)
|| this->parseScaleToken(&m)
|| this->parseRotateToken(&m)
|| this->parseSkewXToken(&m)
|| this->parseSkewYToken(&m))) {
break;
}
matrix.preConcat(m);
parsed = true;
}
this->parseWSToken();
if (!parsed || !this->parseEOSToken()) {
return false;
}
*t = SkSVGTransformType(matrix);
return true;
}
void GrSWMaskHelper::DrawToTargetWithPathMask(GrTexture* texture,
GrDrawTarget* target,
const SkIRect& rect) {
GrDrawState* drawState = target->drawState();
GrDrawState::AutoViewMatrixRestore avmr;
if (!avmr.setIdentity(drawState)) {
return;
}
GrDrawState::AutoRestoreEffects are(drawState);
SkRect dstRect = SkRect::MakeLTRB(SK_Scalar1 * rect.fLeft,
SK_Scalar1 * rect.fTop,
SK_Scalar1 * rect.fRight,
SK_Scalar1 * rect.fBottom);
// We want to use device coords to compute the texture coordinates. We set our matrix to be
// equal to the view matrix followed by a translation so that the top-left of the device bounds
// maps to 0,0, and then a scaling matrix to normalized coords. We apply this matrix to the
// vertex positions rather than local coords.
SkMatrix maskMatrix;
maskMatrix.setIDiv(texture->width(), texture->height());
maskMatrix.preTranslate(SkIntToScalar(-rect.fLeft), SkIntToScalar(-rect.fTop));
maskMatrix.preConcat(drawState->getViewMatrix());
drawState->addCoverageEffect(
GrSimpleTextureEffect::Create(texture,
maskMatrix,
GrTextureParams::kNone_FilterMode,
kPosition_GrCoordSet))->unref();
target->drawSimpleRect(dstRect);
}
static void flattenPaint(const SkDraw& d, SkPaint* paint) {
if (paint->getShader()) {
SkMatrix local = paint->getShader()->getLocalMatrix();
local.preConcat(*d.fMatrix);
paint->getShader()->setLocalMatrix(local);
}
}
void GrSWMaskHelper::DrawToTargetWithShapeMask(sk_sp<GrTextureProxy> proxy,
GrRenderTargetContext* renderTargetContext,
GrPaint&& paint,
const GrUserStencilSettings& userStencilSettings,
const GrClip& clip,
const SkMatrix& viewMatrix,
const SkIPoint& textureOriginInDeviceSpace,
const SkIRect& deviceSpaceRectToDraw) {
SkMatrix invert;
if (!viewMatrix.invert(&invert)) {
return;
}
GrResourceProvider* resourceProvider = renderTargetContext->resourceProvider();
SkRect dstRect = SkRect::Make(deviceSpaceRectToDraw);
// We use device coords to compute the texture coordinates. We take the device coords and apply
// a translation so that the top-left of the device bounds maps to 0,0, and then a scaling
// matrix to normalized coords.
SkMatrix maskMatrix = SkMatrix::MakeTrans(SkIntToScalar(-textureOriginInDeviceSpace.fX),
SkIntToScalar(-textureOriginInDeviceSpace.fY));
maskMatrix.preConcat(viewMatrix);
std::unique_ptr<GrLegacyMeshDrawOp> op = GrRectOpFactory::MakeNonAAFill(
paint.getColor(), SkMatrix::I(), dstRect, nullptr, &invert);
paint.addCoverageFragmentProcessor(GrSimpleTextureEffect::Make(
resourceProvider, std::move(proxy), nullptr, maskMatrix,
GrSamplerParams::kNone_FilterMode));
GrPipelineBuilder pipelineBuilder(std::move(paint), GrAAType::kNone);
pipelineBuilder.setUserStencil(&userStencilSettings);
renderTargetContext->addLegacyMeshDrawOp(std::move(pipelineBuilder), clip, std::move(op));
}
void Matrix::NativePreConcat(
/* [in] */ Int64 objHandle,
/* [in] */ Int64 otherHandle)
{
SkMatrix* obj = reinterpret_cast<SkMatrix*>(objHandle);
SkMatrix* other = reinterpret_cast<SkMatrix*>(otherHandle);
obj->preConcat(*other);
}
const GrFragmentProcessor* SkImageShader::asFragmentProcessor(GrContext* context,
const SkMatrix& viewM,
const SkMatrix* localMatrix,
SkFilterQuality filterQuality,
GrProcessorDataManager* mgr) const {
SkMatrix matrix;
matrix.setIDiv(fImage->width(), fImage->height());
SkMatrix lmInverse;
if (!this->getLocalMatrix().invert(&lmInverse)) {
return nullptr;
}
if (localMatrix) {
SkMatrix inv;
if (!localMatrix->invert(&inv)) {
return nullptr;
}
lmInverse.postConcat(inv);
}
matrix.preConcat(lmInverse);
SkShader::TileMode tm[] = { fTileModeX, fTileModeY };
// Must set wrap and filter on the sampler before requesting a texture. In two places below
// we check the matrix scale factors to determine how to interpret the filter quality setting.
// This completely ignores the complexity of the drawVertices case where explicit local coords
// are provided by the caller.
bool doBicubic;
GrTextureParams::FilterMode textureFilterMode =
GrSkFilterQualityToGrFilterMode(filterQuality, viewM, this->getLocalMatrix(), &doBicubic);
GrTextureParams params(tm, textureFilterMode);
SkImageUsageType usageType;
if (kClamp_TileMode == fTileModeX && kClamp_TileMode == fTileModeY) {
usageType = kUntiled_SkImageUsageType;
} else if (GrTextureParams::kNone_FilterMode == textureFilterMode) {
usageType = kTiled_Unfiltered_SkImageUsageType;
} else {
usageType = kTiled_Filtered_SkImageUsageType;
}
SkAutoTUnref<GrTexture> texture(as_IB(fImage)->asTextureRef(context, usageType));
if (!texture) {
return nullptr;
}
SkAutoTUnref<GrFragmentProcessor> inner;
if (doBicubic) {
inner.reset(GrBicubicEffect::Create(mgr, texture, matrix, tm));
} else {
inner.reset(GrSimpleTextureEffect::Create(mgr, texture, matrix, params));
}
if (GrPixelConfigIsAlphaOnly(texture->config())) {
return SkRef(inner.get());
}
return GrFragmentProcessor::MulOuputByInputAlpha(inner);
}
bool SkNormalMapSourceImpl::computeNormTotalInverse(const SkShaderBase::ContextRec& rec,
SkMatrix* normTotalInverse) const {
SkMatrix total = SkMatrix::Concat(*rec.fMatrix, fMapShader->getLocalMatrix());
if (rec.fLocalMatrix) {
total.preConcat(*rec.fLocalMatrix);
}
return total.invert(normTotalInverse);
}
void SkSVGDevice::drawBitmap(const SkDraw& draw, const SkBitmap& bitmap,
const SkMatrix& matrix, const SkPaint& paint) {
SkMatrix adjustedMatrix = *draw.fMatrix;
adjustedMatrix.preConcat(matrix);
SkDraw adjustedDraw(draw);
adjustedDraw.fMatrix = &adjustedMatrix;
drawBitmapCommon(adjustedDraw, bitmap, paint);
}
bool SkBitmapProcShader::asFragmentProcessor(GrContext* context, const SkPaint& paint,
const SkMatrix& viewM,
const SkMatrix* localMatrix, GrColor* paintColor,
GrProcessorDataManager* procDataManager,
GrFragmentProcessor** fp) const {
SkMatrix matrix;
matrix.setIDiv(fRawBitmap.width(), fRawBitmap.height());
SkMatrix lmInverse;
if (!this->getLocalMatrix().invert(&lmInverse)) {
return false;
}
if (localMatrix) {
SkMatrix inv;
if (!localMatrix->invert(&inv)) {
return false;
}
lmInverse.postConcat(inv);
}
matrix.preConcat(lmInverse);
SkShader::TileMode tm[] = {
(TileMode)fTileModeX,
(TileMode)fTileModeY,
};
// Must set wrap and filter on the sampler before requesting a texture. In two places below
// we check the matrix scale factors to determine how to interpret the filter quality setting.
// This completely ignores the complexity of the drawVertices case where explicit local coords
// are provided by the caller.
bool doBicubic;
GrTextureParams::FilterMode textureFilterMode =
GrSkFilterQualityToGrFilterMode(paint.getFilterQuality(), viewM, this->getLocalMatrix(),
&doBicubic);
GrTextureParams params(tm, textureFilterMode);
SkAutoTUnref<GrTexture> texture(GrRefCachedBitmapTexture(context, fRawBitmap, ¶ms));
if (!texture) {
SkErrorInternals::SetError( kInternalError_SkError,
"Couldn't convert bitmap to texture.");
return false;
}
*paintColor = (kAlpha_8_SkColorType == fRawBitmap.colorType()) ?
SkColor2GrColor(paint.getColor()) :
SkColor2GrColorJustAlpha(paint.getColor());
if (doBicubic) {
*fp = GrBicubicEffect::Create(procDataManager, texture, matrix, tm);
} else {
*fp = GrSimpleTextureEffect::Create(procDataManager, texture, matrix, params);
}
return true;
}
void SkMatrixClipStateMgr::writeDeltaMat(int currentMatID, int desiredMatID) {
const SkMatrix& current = this->lookupMat(currentMatID);
const SkMatrix& desired = this->lookupMat(desiredMatID);
SkMatrix delta;
bool result = current.invert(&delta);
if (result) {
delta.preConcat(desired);
}
fPicRecord->recordConcat(delta);
}
SkMatrix Viewer::computeMatrix() {
SkMatrix m;
m.reset();
if (fZoomLevel) {
SkPoint center;
//m = this->getLocalMatrix();//.invert(&m);
m.mapXY(fZoomCenterX, fZoomCenterY, ¢er);
SkScalar cx = center.fX;
SkScalar cy = center.fY;
m.setTranslate(-cx, -cy);
m.postScale(fZoomScale, fZoomScale);
m.postTranslate(cx, cy);
}
m.preConcat(fGesture.localM());
m.preConcat(fGesture.globalM());
return m;
}
SkShader* SkPictureShader::refBitmapShader(const SkMatrix& matrix, const SkMatrix* localM) const {
SkASSERT(fPicture && fPicture->width() > 0 && fPicture->height() > 0);
SkMatrix m;
m.setConcat(matrix, this->getLocalMatrix());
if (localM) {
m.preConcat(*localM);
}
// Use a rotation-invariant scale
SkPoint scale;
if (!SkDecomposeUpper2x2(m, NULL, &scale, NULL)) {
// Decomposition failed, use an approximation.
scale.set(SkScalarSqrt(m.getScaleX() * m.getScaleX() + m.getSkewX() * m.getSkewX()),
SkScalarSqrt(m.getScaleY() * m.getScaleY() + m.getSkewY() * m.getSkewY()));
}
SkSize scaledSize = SkSize::Make(scale.x() * fPicture->width(), scale.y() * fPicture->height());
SkISize tileSize = scaledSize.toRound();
if (tileSize.isEmpty()) {
return NULL;
}
// The actual scale, compensating for rounding.
SkSize tileScale = SkSize::Make(SkIntToScalar(tileSize.width()) / fPicture->width(),
SkIntToScalar(tileSize.height()) / fPicture->height());
SkAutoMutexAcquire ama(fCachedBitmapShaderMutex);
if (!fCachedBitmapShader || tileScale != fCachedTileScale) {
SkBitmap bm;
if (!bm.allocN32Pixels(tileSize.width(), tileSize.height())) {
return NULL;
}
bm.eraseColor(SK_ColorTRANSPARENT);
SkCanvas canvas(bm);
canvas.scale(tileScale.width(), tileScale.height());
canvas.drawPicture(fPicture);
fCachedTileScale = tileScale;
SkMatrix shaderMatrix = this->getLocalMatrix();
shaderMatrix.preScale(1 / tileScale.width(), 1 / tileScale.height());
fCachedBitmapShader.reset(CreateBitmapShader(bm, fTmx, fTmy, &shaderMatrix));
}
// Increment the ref counter inside the mutex to ensure the returned pointer is still valid.
// Otherwise, the pointer may have been overwritten on a different thread before the object's
// ref count was incremented.
fCachedBitmapShader.get()->ref();
return fCachedBitmapShader;
}
void GrLayerHoister::DrawLayersToAtlas(GrContext* context,
const SkTDArray<GrHoistedLayer>& atlased) {
if (atlased.count() > 0) {
// All the atlased layers are rendered into the same GrTexture
SkAutoTUnref<SkSurface> surface(SkSurface::NewRenderTargetDirect(
atlased[0].fLayer->texture()->asRenderTarget(), NULL));
SkCanvas* atlasCanvas = surface->getCanvas();
SkPaint clearPaint;
clearPaint.setColor(SK_ColorTRANSPARENT);
clearPaint.setXfermode(SkXfermode::Create(SkXfermode::kSrc_Mode))->unref();
for (int i = 0; i < atlased.count(); ++i) {
const GrCachedLayer* layer = atlased[i].fLayer;
const SkPicture* pict = atlased[i].fPicture;
const SkIPoint offset = atlased[i].fOffset;
SkDEBUGCODE(const SkPaint* layerPaint = layer->paint();)
SkASSERT(!layerPaint || !layerPaint->getImageFilter());
atlasCanvas->save();
// Add a rect clip to make sure the rendering doesn't
// extend beyond the boundaries of the atlased sub-rect
SkRect bound = SkRect::MakeXYWH(SkIntToScalar(layer->rect().fLeft),
SkIntToScalar(layer->rect().fTop),
SkIntToScalar(layer->rect().width()),
SkIntToScalar(layer->rect().height()));
atlasCanvas->clipRect(bound);
// Since 'clear' doesn't respect the clip we need to draw a rect
atlasCanvas->drawRect(bound, clearPaint);
// '-offset' maps the layer's top/left to the origin.
// Since this layer is atlased, the top/left corner needs
// to be offset to the correct location in the backing texture.
SkMatrix initialCTM;
initialCTM.setTranslate(SkIntToScalar(-offset.fX), SkIntToScalar(-offset.fY));
initialCTM.preTranslate(bound.fLeft, bound.fTop);
initialCTM.preConcat(atlased[i].fPreMat);
atlasCanvas->setMatrix(initialCTM);
atlasCanvas->concat(atlased[i].fLocalMat);
SkRecordPartialDraw(*pict->fRecord.get(), atlasCanvas, bound,
layer->start() + 1, layer->stop(), initialCTM);
atlasCanvas->restore();
}
atlasCanvas->flush();
}
SkGLDevice::TexCache* SkGLDevice::setupGLPaintShader(const SkPaint& paint) {
SkGL::SetPaint(paint);
SkShader* shader = paint.getShader();
if (NULL == shader) {
return NULL;
}
if (!shader->setContext(this->accessBitmap(false), paint, this->matrix())) {
return NULL;
}
SkBitmap bitmap;
SkMatrix matrix;
SkShader::TileMode tileModes[2];
if (!shader->asABitmap(&bitmap, &matrix, tileModes)) {
return NULL;
}
bitmap.lockPixels();
if (!bitmap.readyToDraw()) {
return NULL;
}
// see if we've already cached the bitmap from the shader
SkPoint max;
GLuint name;
TexCache* cache = SkGLDevice::LockTexCache(bitmap, &name, &max);
// the lock has already called glBindTexture for us
SkGL::SetTexParams(paint.isFilterBitmap(), tileModes[0], tileModes[1]);
// since our texture coords will be in local space, we wack the texture
// matrix to map them back into 0...1 before we load it
SkMatrix localM;
if (shader->getLocalMatrix(&localM)) {
SkMatrix inverse;
if (localM.invert(&inverse)) {
matrix.preConcat(inverse);
}
}
matrix.postScale(max.fX / bitmap.width(), max.fY / bitmap.height());
glMatrixMode(GL_TEXTURE);
SkGL::LoadMatrix(matrix);
glMatrixMode(GL_MODELVIEW);
// since we're going to use a shader/texture, we don't want the color,
// just its alpha
SkGL::SetAlpha(paint.getAlpha());
// report that we have setup the texture
return cache;
}
static CGAffineTransform matrix_to_transform(CGContextRef cg, const SkMatrix& ctm) {
SkMatrix matrix;
matrix.setScale(1, -1);
matrix.postTranslate(0, SkIntToScalar(CGBitmapContextGetHeight(cg)));
matrix.preConcat(ctm);
return CGAffineTransformMake(matrix[SkMatrix::kMScaleX],
matrix[SkMatrix::kMSkewY],
matrix[SkMatrix::kMSkewX],
matrix[SkMatrix::kMScaleY],
matrix[SkMatrix::kMTransX],
matrix[SkMatrix::kMTransY]);
}
bool SkPerlinNoiseShader::asFragmentProcessor(GrContext* context, const SkPaint& paint,
const SkMatrix& viewM,
const SkMatrix* externalLocalMatrix,
GrColor* paintColor, GrFragmentProcessor** fp) const {
SkASSERT(context);
*paintColor = SkColor2GrColorJustAlpha(paint.getColor());
SkMatrix localMatrix = this->getLocalMatrix();
if (externalLocalMatrix) {
localMatrix.preConcat(*externalLocalMatrix);
}
SkMatrix matrix = viewM;
matrix.preConcat(localMatrix);
if (0 == fNumOctaves) {
if (kFractalNoise_Type == fType) {
uint32_t alpha = paint.getAlpha() >> 1;
uint32_t rgb = alpha >> 1;
*paintColor = GrColorPackRGBA(rgb, rgb, rgb, alpha);
} else {
static void testinvert() {
SkMatrix matrix;
const float vals[] = { 0,9,.000001,10000,0,0 };
setmatrix6(&matrix, vals);
const float vals2[] = { 0,100,71,9,0,7 };
SkMatrix tmp;
setmatrix6(&tmp, vals2);
matrix.preConcat(tmp);
matrix.dump();
SkMatrix inverse;
matrix.invert(&inverse);
inverse.dump();
matrix.preConcat(inverse);
matrix.dump();
// o2dContext.setTransform(0,9,.000001,10000,0,0);
// o2dContext.transform(0,100,71,9,0,7);
// o2dContext.setTransform(0,6,95,4,1,0);
}
void GrBlurUtils::drawPathWithMaskFilter(GrContext* context,
GrDrawContext* drawContext,
const GrClip& clip,
const SkPath& origSrcPath,
const SkPaint& paint,
const SkMatrix& origViewMatrix,
const SkMatrix* prePathMatrix,
const SkIRect& clipBounds,
bool pathIsMutable) {
SkASSERT(!pathIsMutable || origSrcPath.isVolatile());
GrStrokeInfo strokeInfo(paint);
// comment out the line below to determine if it is the reason that the chrome mac perf bot
// has begun crashing
// strokeInfo.setResScale(SkDraw::ComputeResScaleForStroking(origViewMatrix));
// If we have a prematrix, apply it to the path, optimizing for the case
// where the original path can in fact be modified in place (even though
// its parameter type is const).
SkPath* pathPtr = const_cast<SkPath*>(&origSrcPath);
SkTLazy<SkPath> tmpPath;
SkTLazy<SkPath> effectPath;
SkPathEffect* pathEffect = paint.getPathEffect();
SkMatrix viewMatrix = origViewMatrix;
if (prePathMatrix) {
// stroking, path effects, and blurs are supposed to be applied *after* the prePathMatrix.
// The pre-path-matrix also should not affect shading.
if (!paint.getMaskFilter() && !pathEffect && !paint.getShader() &&
(strokeInfo.isFillStyle() || strokeInfo.isHairlineStyle())) {
viewMatrix.preConcat(*prePathMatrix);
} else {
SkPath* result = pathPtr;
if (!pathIsMutable) {
result = tmpPath.init();
result->setIsVolatile(true);
pathIsMutable = true;
}
// should I push prePathMatrix on our MV stack temporarily, instead
// of applying it here? See SkDraw.cpp
pathPtr->transform(*prePathMatrix, result);
pathPtr = result;
}
}
// at this point we're done with prePathMatrix
SkDEBUGCODE(prePathMatrix = (const SkMatrix*)0x50FF8001;)
void GrLayerHoister::DrawLayersToAtlas(GrContext* context,
const SkTDArray<GrHoistedLayer>& atlased) {
if (atlased.count() > 0) {
// All the atlased layers are rendered into the same GrTexture
SkSurfaceProps props(0, kUnknown_SkPixelGeometry);
SkAutoTUnref<SkSurface> surface(SkSurface::NewRenderTargetDirect(
atlased[0].fLayer->texture()->asRenderTarget(), &props));
SkCanvas* atlasCanvas = surface->getCanvas();
for (int i = 0; i < atlased.count(); ++i) {
const GrCachedLayer* layer = atlased[i].fLayer;
const SkBigPicture* pict = atlased[i].fPicture->asSkBigPicture();
if (!pict) {
// TODO: can we assume / assert this?
continue;
}
const SkIPoint offset = SkIPoint::Make(layer->srcIR().fLeft, layer->srcIR().fTop);
SkDEBUGCODE(const SkPaint* layerPaint = layer->paint();)
SkASSERT(!layerPaint || !layerPaint->getImageFilter());
SkASSERT(!layer->filter());
atlasCanvas->save();
// Add a rect clip to make sure the rendering doesn't
// extend beyond the boundaries of the atlased sub-rect
const SkRect bound = SkRect::Make(layer->rect());
atlasCanvas->clipRect(bound);
atlasCanvas->clear(0);
// '-offset' maps the layer's top/left to the origin.
// Since this layer is atlased, the top/left corner needs
// to be offset to the correct location in the backing texture.
SkMatrix initialCTM;
initialCTM.setTranslate(SkIntToScalar(-offset.fX), SkIntToScalar(-offset.fY));
initialCTM.preTranslate(bound.fLeft, bound.fTop);
initialCTM.preConcat(atlased[i].fPreMat);
atlasCanvas->setMatrix(initialCTM);
atlasCanvas->concat(atlased[i].fLocalMat);
pict->partialPlayback(atlasCanvas, layer->start() + 1, layer->stop(), initialCTM);
atlasCanvas->restore();
}
atlasCanvas->flush();
}
sk_sp<GrFragmentProcessor> SkImageShader::asFragmentProcessor(const AsFPArgs& args) const {
SkMatrix matrix;
matrix.setIDiv(fImage->width(), fImage->height());
SkMatrix lmInverse;
if (!this->getLocalMatrix().invert(&lmInverse)) {
return nullptr;
}
if (args.fLocalMatrix) {
SkMatrix inv;
if (!args.fLocalMatrix->invert(&inv)) {
return nullptr;
}
lmInverse.postConcat(inv);
}
matrix.preConcat(lmInverse);
SkShader::TileMode tm[] = { fTileModeX, fTileModeY };
// Must set wrap and filter on the sampler before requesting a texture. In two places below
// we check the matrix scale factors to determine how to interpret the filter quality setting.
// This completely ignores the complexity of the drawVertices case where explicit local coords
// are provided by the caller.
bool doBicubic;
GrTextureParams::FilterMode textureFilterMode =
GrSkFilterQualityToGrFilterMode(args.fFilterQuality, *args.fViewMatrix, this->getLocalMatrix(),
&doBicubic);
GrTextureParams params(tm, textureFilterMode);
SkAutoTUnref<GrTexture> texture(as_IB(fImage)->asTextureRef(args.fContext, params,
args.fGammaTreatment));
if (!texture) {
return nullptr;
}
sk_sp<GrFragmentProcessor> inner;
if (doBicubic) {
inner = GrBicubicEffect::Make(texture, nullptr, matrix, tm);
} else {
inner = GrSimpleTextureEffect::Make(texture, nullptr, matrix, params);
}
if (GrPixelConfigIsAlphaOnly(texture->config())) {
return inner;
}
return sk_sp<GrFragmentProcessor>(GrFragmentProcessor::MulOutputByInputAlpha(std::move(inner)));
}
/*
[0] 9.9999997e-005 float
[1] 9.0000003e-006 float
[2] 7.0000001e-006 float
[3] 1000000.0 float
[4] 90639.000 float
[5] 70000.000 float
[6] 0.00000000 float
[7] 0.00000000 float
[8] 1.0000000 float
*/
static void testinvert2() {
const float val[] = {
9.9999997e-005, 9.0000003e-006, 7.0000001e-006,
1000000.0, 90639.000, 70000.000
};
SkMatrix matrix;
setmatrix6(&matrix, val);
matrix.dump();
SkMatrix inverse;
matrix.invert(&inverse);
inverse.dump();
matrix.preConcat(inverse);
matrix.dump();
// result is that matrix[3] is 49550 instead of 0 :(
}
sk_sp<SkShader> SkShader::makeWithLocalMatrix(const SkMatrix& localMatrix) const {
if (localMatrix.isIdentity()) {
return sk_ref_sp(const_cast<SkShader*>(this));
}
const SkMatrix* lm = &localMatrix;
SkShader* baseShader = const_cast<SkShader*>(this);
SkMatrix otherLocalMatrix;
SkAutoTUnref<SkShader> proxy(this->refAsALocalMatrixShader(&otherLocalMatrix));
if (proxy) {
otherLocalMatrix.preConcat(localMatrix);
lm = &otherLocalMatrix;
baseShader = proxy.get();
}
return sk_make_sp<SkLocalMatrixShader>(baseShader, *lm);
}
void SkLayer::localToGlobal(SkMatrix* matrix) const {
this->getLocalTransform(matrix);
if (this->isInheritFromRootTransform()) {
matrix->postConcat(this->getRootLayer()->getMatrix());
return;
}
const SkLayer* layer = this;
while (layer->fParent != NULL) {
layer = layer->fParent;
SkMatrix tmp;
layer->getLocalTransform(&tmp);
tmp.preConcat(layer->getChildrenMatrix());
matrix->postConcat(tmp);
}
}
sk_sp<GrGeometryProcessor> GrDefaultGeoProcFactory::MakeForDeviceSpace(
const Color& color,
const Coverage& coverage,
const LocalCoords& localCoords,
const SkMatrix& viewMatrix) {
SkMatrix invert = SkMatrix::I();
if (LocalCoords::kUnused_Type != localCoords.fType) {
SkASSERT(LocalCoords::kUsePosition_Type == localCoords.fType);
if (!viewMatrix.isIdentity() && !viewMatrix.invert(&invert)) {
return nullptr;
}
if (localCoords.hasLocalMatrix()) {
invert.preConcat(*localCoords.fMatrix);
}
}
LocalCoords inverted(LocalCoords::kUsePosition_Type, &invert);
return Make(color, coverage, inverted, SkMatrix::I());
}