forked from mirrors/gecko-dev
912 lines
34 KiB
C++
912 lines
34 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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// Main header first:
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#include "FilterInstance.h"
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// MFBT headers next:
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#include "mozilla/UniquePtr.h"
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// Keep others in (case-insensitive) order:
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#include "FilterSupport.h"
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#include "ImgDrawResult.h"
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#include "SVGContentUtils.h"
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#include "gfx2DGlue.h"
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#include "gfxContext.h"
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#include "gfxPlatform.h"
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#include "gfxUtils.h"
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#include "mozilla/Unused.h"
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#include "mozilla/gfx/Filters.h"
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#include "mozilla/gfx/Helpers.h"
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#include "mozilla/gfx/Logging.h"
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#include "mozilla/gfx/PatternHelpers.h"
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#include "mozilla/ISVGDisplayableFrame.h"
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#include "mozilla/StaticPrefs_gfx.h"
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#include "mozilla/SVGFilterInstance.h"
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#include "mozilla/SVGUtils.h"
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#include "CSSFilterInstance.h"
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#include "SVGFilterPaintCallback.h"
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#include "SVGIntegrationUtils.h"
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using namespace mozilla::dom;
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using namespace mozilla::gfx;
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using namespace mozilla::image;
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namespace mozilla {
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FilterDescription FilterInstance::GetFilterDescription(
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nsIContent* aFilteredElement, Span<const StyleFilter> aFilterChain,
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bool aFilterInputIsTainted, const UserSpaceMetrics& aMetrics,
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const gfxRect& aBBox,
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nsTArray<RefPtr<SourceSurface>>& aOutAdditionalImages) {
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gfxMatrix identity;
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FilterInstance instance(nullptr, aFilteredElement, aMetrics, aFilterChain,
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aFilterInputIsTainted, nullptr, identity, nullptr,
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nullptr, nullptr, &aBBox);
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if (!instance.IsInitialized()) {
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return FilterDescription();
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}
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return instance.ExtractDescriptionAndAdditionalImages(aOutAdditionalImages);
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}
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static UniquePtr<UserSpaceMetrics> UserSpaceMetricsForFrame(nsIFrame* aFrame) {
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if (auto* element = SVGElement::FromNodeOrNull(aFrame->GetContent())) {
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return MakeUnique<SVGElementMetrics>(element);
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}
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return MakeUnique<NonSVGFrameUserSpaceMetrics>(aFrame);
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}
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void FilterInstance::PaintFilteredFrame(nsIFrame* aFilteredFrame,
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gfxContext* aCtx,
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SVGFilterPaintCallback* aPaintCallback,
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const nsRegion* aDirtyArea,
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imgDrawingParams& aImgParams,
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float aOpacity) {
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auto filterChain = aFilteredFrame->StyleEffects()->mFilters.AsSpan();
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UniquePtr<UserSpaceMetrics> metrics =
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UserSpaceMetricsForFrame(aFilteredFrame);
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gfxContextMatrixAutoSaveRestore autoSR(aCtx);
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gfxSize scaleFactors = aCtx->CurrentMatrixDouble().ScaleFactors();
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if (scaleFactors.IsEmpty()) {
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return;
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}
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gfxMatrix scaleMatrix(scaleFactors.width, 0.0f, 0.0f, scaleFactors.height,
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0.0f, 0.0f);
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gfxMatrix reverseScaleMatrix = scaleMatrix;
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DebugOnly<bool> invertible = reverseScaleMatrix.Invert();
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MOZ_ASSERT(invertible);
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// Pull scale vector out of aCtx's transform, put all scale factors, which
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// includes css and css-to-dev-px scale, into scaleMatrixInDevUnits.
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aCtx->SetMatrixDouble(reverseScaleMatrix * aCtx->CurrentMatrixDouble());
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gfxMatrix scaleMatrixInDevUnits =
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scaleMatrix * SVGUtils::GetCSSPxToDevPxMatrix(aFilteredFrame);
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// Hardcode InputIsTainted to true because we don't want JS to be able to
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// read the rendered contents of aFilteredFrame.
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FilterInstance instance(aFilteredFrame, aFilteredFrame->GetContent(),
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*metrics, filterChain, /* InputIsTainted */ true,
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aPaintCallback, scaleMatrixInDevUnits, aDirtyArea,
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nullptr, nullptr, nullptr);
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if (instance.IsInitialized()) {
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instance.Render(aCtx, aImgParams, aOpacity);
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}
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}
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static mozilla::wr::ComponentTransferFuncType FuncTypeToWr(uint8_t aFuncType) {
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MOZ_ASSERT(aFuncType != SVG_FECOMPONENTTRANSFER_SAME_AS_R);
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switch (aFuncType) {
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case SVG_FECOMPONENTTRANSFER_TYPE_TABLE:
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return mozilla::wr::ComponentTransferFuncType::Table;
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case SVG_FECOMPONENTTRANSFER_TYPE_DISCRETE:
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return mozilla::wr::ComponentTransferFuncType::Discrete;
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case SVG_FECOMPONENTTRANSFER_TYPE_LINEAR:
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return mozilla::wr::ComponentTransferFuncType::Linear;
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case SVG_FECOMPONENTTRANSFER_TYPE_GAMMA:
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return mozilla::wr::ComponentTransferFuncType::Gamma;
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case SVG_FECOMPONENTTRANSFER_TYPE_IDENTITY:
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default:
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return mozilla::wr::ComponentTransferFuncType::Identity;
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}
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MOZ_ASSERT_UNREACHABLE("all func types not handled?");
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return mozilla::wr::ComponentTransferFuncType::Identity;
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}
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bool FilterInstance::BuildWebRenderFilters(nsIFrame* aFilteredFrame,
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Span<const StyleFilter> aFilters,
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WrFiltersHolder& aWrFilters,
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Maybe<nsRect>& aPostFilterClip) {
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aWrFilters.filters.Clear();
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aWrFilters.filter_datas.Clear();
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aWrFilters.values.Clear();
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UniquePtr<UserSpaceMetrics> metrics =
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UserSpaceMetricsForFrame(aFilteredFrame);
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// TODO: simply using an identity matrix here, was pulling the scale from a
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// gfx context for the non-wr path.
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gfxMatrix scaleMatrix;
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gfxMatrix scaleMatrixInDevUnits =
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scaleMatrix * SVGUtils::GetCSSPxToDevPxMatrix(aFilteredFrame);
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// Hardcode inputIsTainted to true because we don't want JS to be able to
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// read the rendered contents of aFilteredFrame.
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bool inputIsTainted = true;
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FilterInstance instance(aFilteredFrame, aFilteredFrame->GetContent(),
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*metrics, aFilters, inputIsTainted, nullptr,
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scaleMatrixInDevUnits, nullptr, nullptr, nullptr,
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nullptr);
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if (!instance.IsInitialized()) {
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return false;
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}
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// If there are too many filters to render, then just pretend that we
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// succeeded, and don't render any of them.
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if (instance.mFilterDescription.mPrimitives.Length() >
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StaticPrefs::gfx_webrender_max_filter_ops_per_chain()) {
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return true;
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}
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Maybe<IntRect> finalClip;
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bool srgb = true;
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// We currently apply the clip on the stacking context after applying filters,
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// but primitive subregions imply clipping after each filter and not just the
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// end of the chain. For some types of filter it doesn't matter, but for those
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// which sample outside of the location of the destination pixel like blurs,
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// only clipping after could produce incorrect results, so we bail out in this
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// case.
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// We can lift this restriction once we have added support for primitive
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// subregions to WebRender's filters.
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for (uint32_t i = 0; i < instance.mFilterDescription.mPrimitives.Length();
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i++) {
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const auto& primitive = instance.mFilterDescription.mPrimitives[i];
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// WebRender only supports filters with one input.
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if (primitive.NumberOfInputs() != 1) {
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return false;
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}
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// The first primitive must have the source graphic as the input, all
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// other primitives must have the prior primitive as the input, otherwise
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// it's not supported by WebRender.
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if (i == 0) {
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if (primitive.InputPrimitiveIndex(0) !=
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FilterPrimitiveDescription::kPrimitiveIndexSourceGraphic) {
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return false;
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}
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} else if (primitive.InputPrimitiveIndex(0) != int32_t(i - 1)) {
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return false;
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}
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bool previousSrgb = srgb;
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bool primNeedsSrgb = primitive.InputColorSpace(0) == gfx::ColorSpace::SRGB;
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if (srgb && !primNeedsSrgb) {
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aWrFilters.filters.AppendElement(wr::FilterOp::SrgbToLinear());
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} else if (!srgb && primNeedsSrgb) {
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aWrFilters.filters.AppendElement(wr::FilterOp::LinearToSrgb());
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}
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srgb = primitive.OutputColorSpace() == gfx::ColorSpace::SRGB;
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const PrimitiveAttributes& attr = primitive.Attributes();
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bool filterIsNoop = false;
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if (attr.is<OpacityAttributes>()) {
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float opacity = attr.as<OpacityAttributes>().mOpacity;
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aWrFilters.filters.AppendElement(wr::FilterOp::Opacity(
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wr::PropertyBinding<float>::Value(opacity), opacity));
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} else if (attr.is<ColorMatrixAttributes>()) {
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const ColorMatrixAttributes& attributes =
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attr.as<ColorMatrixAttributes>();
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float transposed[20];
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if (gfx::ComputeColorMatrix(attributes, transposed)) {
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float matrix[20] = {
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transposed[0], transposed[5], transposed[10], transposed[15],
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transposed[1], transposed[6], transposed[11], transposed[16],
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transposed[2], transposed[7], transposed[12], transposed[17],
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transposed[3], transposed[8], transposed[13], transposed[18],
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transposed[4], transposed[9], transposed[14], transposed[19]};
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aWrFilters.filters.AppendElement(wr::FilterOp::ColorMatrix(matrix));
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} else {
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filterIsNoop = true;
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}
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} else if (attr.is<GaussianBlurAttributes>()) {
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if (finalClip) {
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// There's a clip that needs to apply before the blur filter, but
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// WebRender only lets us apply the clip at the end of the filter
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// chain. Clipping after a blur is not equivalent to clipping before
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// a blur, so bail out.
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return false;
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}
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const GaussianBlurAttributes& blur = attr.as<GaussianBlurAttributes>();
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const Size& stdDev = blur.mStdDeviation;
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if (stdDev.width != 0.0 || stdDev.height != 0.0) {
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aWrFilters.filters.AppendElement(
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wr::FilterOp::Blur(stdDev.width, stdDev.height));
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} else {
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filterIsNoop = true;
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}
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} else if (attr.is<DropShadowAttributes>()) {
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if (finalClip) {
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// We have to bail out for the same reason we would with a blur filter.
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return false;
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}
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const DropShadowAttributes& shadow = attr.as<DropShadowAttributes>();
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const Size& stdDev = shadow.mStdDeviation;
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if (stdDev.width != stdDev.height) {
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return false;
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}
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sRGBColor color = shadow.mColor;
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if (!primNeedsSrgb) {
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color = sRGBColor(gsRGBToLinearRGBMap[uint8_t(color.r * 255)],
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gsRGBToLinearRGBMap[uint8_t(color.g * 255)],
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gsRGBToLinearRGBMap[uint8_t(color.b * 255)], color.a);
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}
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wr::Shadow wrShadow;
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wrShadow.offset = {shadow.mOffset.x, shadow.mOffset.y};
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wrShadow.color = wr::ToColorF(ToDeviceColor(color));
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wrShadow.blur_radius = stdDev.width;
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wr::FilterOp filterOp = wr::FilterOp::DropShadow(wrShadow);
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aWrFilters.filters.AppendElement(filterOp);
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} else if (attr.is<ComponentTransferAttributes>()) {
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const ComponentTransferAttributes& attributes =
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attr.as<ComponentTransferAttributes>();
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size_t numValues =
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attributes.mValues[0].Length() + attributes.mValues[1].Length() +
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attributes.mValues[2].Length() + attributes.mValues[3].Length();
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if (numValues > 1024) {
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// Depending on how the wr shaders are implemented we may need to
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// limit the total number of values.
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return false;
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}
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wr::FilterOp filterOp = {wr::FilterOp::Tag::ComponentTransfer};
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wr::WrFilterData filterData;
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aWrFilters.values.AppendElement(nsTArray<float>());
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nsTArray<float>* values =
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&aWrFilters.values[aWrFilters.values.Length() - 1];
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values->SetCapacity(numValues);
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filterData.funcR_type = FuncTypeToWr(attributes.mTypes[0]);
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size_t R_startindex = values->Length();
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values->AppendElements(attributes.mValues[0]);
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filterData.R_values_count = attributes.mValues[0].Length();
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size_t indexToUse =
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attributes.mTypes[1] == SVG_FECOMPONENTTRANSFER_SAME_AS_R ? 0 : 1;
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filterData.funcG_type = FuncTypeToWr(attributes.mTypes[indexToUse]);
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size_t G_startindex = values->Length();
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values->AppendElements(attributes.mValues[indexToUse]);
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filterData.G_values_count = attributes.mValues[indexToUse].Length();
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indexToUse =
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attributes.mTypes[2] == SVG_FECOMPONENTTRANSFER_SAME_AS_R ? 0 : 2;
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filterData.funcB_type = FuncTypeToWr(attributes.mTypes[indexToUse]);
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size_t B_startindex = values->Length();
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values->AppendElements(attributes.mValues[indexToUse]);
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filterData.B_values_count = attributes.mValues[indexToUse].Length();
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filterData.funcA_type = FuncTypeToWr(attributes.mTypes[3]);
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size_t A_startindex = values->Length();
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values->AppendElements(attributes.mValues[3]);
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filterData.A_values_count = attributes.mValues[3].Length();
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filterData.R_values =
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filterData.R_values_count > 0 ? &((*values)[R_startindex]) : nullptr;
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filterData.G_values =
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filterData.G_values_count > 0 ? &((*values)[G_startindex]) : nullptr;
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filterData.B_values =
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filterData.B_values_count > 0 ? &((*values)[B_startindex]) : nullptr;
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filterData.A_values =
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filterData.A_values_count > 0 ? &((*values)[A_startindex]) : nullptr;
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aWrFilters.filters.AppendElement(filterOp);
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aWrFilters.filter_datas.AppendElement(filterData);
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} else {
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return false;
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}
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if (filterIsNoop && aWrFilters.filters.Length() > 0 &&
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(aWrFilters.filters.LastElement().tag ==
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wr::FilterOp::Tag::SrgbToLinear ||
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aWrFilters.filters.LastElement().tag ==
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wr::FilterOp::Tag::LinearToSrgb)) {
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// We pushed a color space conversion filter in prevision of applying
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// another filter which turned out to be a no-op, so the conversion is
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// unnecessary. Remove it from the filter list.
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// This is both an optimization and a way to pass the wptest
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// css/filter-effects/filter-scale-001.html for which the needless
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// sRGB->linear->no-op->sRGB roundtrip introduces a slight error and we
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// cannot add fuzziness to the test.
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Unused << aWrFilters.filters.PopLastElement();
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srgb = previousSrgb;
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}
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if (!filterIsNoop) {
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if (finalClip.isNothing()) {
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finalClip = Some(primitive.PrimitiveSubregion());
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} else {
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finalClip =
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Some(primitive.PrimitiveSubregion().Intersect(finalClip.value()));
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}
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}
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}
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if (!srgb) {
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aWrFilters.filters.AppendElement(wr::FilterOp::LinearToSrgb());
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}
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if (finalClip) {
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aPostFilterClip = Some(instance.FilterSpaceToFrameSpace(finalClip.value()));
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}
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return true;
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}
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nsRegion FilterInstance::GetPostFilterDirtyArea(
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nsIFrame* aFilteredFrame, const nsRegion& aPreFilterDirtyRegion) {
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if (aPreFilterDirtyRegion.IsEmpty()) {
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return nsRegion();
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}
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gfxMatrix tm = SVGUtils::GetCanvasTM(aFilteredFrame);
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auto filterChain = aFilteredFrame->StyleEffects()->mFilters.AsSpan();
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UniquePtr<UserSpaceMetrics> metrics =
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UserSpaceMetricsForFrame(aFilteredFrame);
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// Hardcode InputIsTainted to true because we don't want JS to be able to
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// read the rendered contents of aFilteredFrame.
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FilterInstance instance(aFilteredFrame, aFilteredFrame->GetContent(),
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*metrics, filterChain, /* InputIsTainted */ true,
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nullptr, tm, nullptr, &aPreFilterDirtyRegion);
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if (!instance.IsInitialized()) {
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return nsRegion();
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}
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// We've passed in the source's dirty area so the instance knows about it.
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// Now we can ask the instance to compute the area of the filter output
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// that's dirty.
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return instance.ComputePostFilterDirtyRegion();
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}
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nsRegion FilterInstance::GetPreFilterNeededArea(
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nsIFrame* aFilteredFrame, const nsRegion& aPostFilterDirtyRegion) {
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gfxMatrix tm = SVGUtils::GetCanvasTM(aFilteredFrame);
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auto filterChain = aFilteredFrame->StyleEffects()->mFilters.AsSpan();
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UniquePtr<UserSpaceMetrics> metrics =
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UserSpaceMetricsForFrame(aFilteredFrame);
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// Hardcode InputIsTainted to true because we don't want JS to be able to
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// read the rendered contents of aFilteredFrame.
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FilterInstance instance(aFilteredFrame, aFilteredFrame->GetContent(),
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*metrics, filterChain, /* InputIsTainted */ true,
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nullptr, tm, &aPostFilterDirtyRegion);
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if (!instance.IsInitialized()) {
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return nsRect();
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}
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// Now we can ask the instance to compute the area of the source
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// that's needed.
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return instance.ComputeSourceNeededRect();
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}
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nsRect FilterInstance::GetPostFilterBounds(nsIFrame* aFilteredFrame,
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const gfxRect* aOverrideBBox,
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const nsRect* aPreFilterBounds) {
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MOZ_ASSERT(!aFilteredFrame->HasAnyStateBits(NS_FRAME_SVG_LAYOUT) ||
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!aFilteredFrame->HasAnyStateBits(NS_FRAME_IS_NONDISPLAY),
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"Non-display SVG do not maintain ink overflow rects");
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nsRegion preFilterRegion;
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nsRegion* preFilterRegionPtr = nullptr;
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if (aPreFilterBounds) {
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preFilterRegion = *aPreFilterBounds;
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preFilterRegionPtr = &preFilterRegion;
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}
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gfxMatrix tm = SVGUtils::GetCanvasTM(aFilteredFrame);
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auto filterChain = aFilteredFrame->StyleEffects()->mFilters.AsSpan();
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UniquePtr<UserSpaceMetrics> metrics =
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UserSpaceMetricsForFrame(aFilteredFrame);
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// Hardcode InputIsTainted to true because we don't want JS to be able to
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// read the rendered contents of aFilteredFrame.
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FilterInstance instance(aFilteredFrame, aFilteredFrame->GetContent(),
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*metrics, filterChain, /* InputIsTainted */ true,
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nullptr, tm, nullptr, preFilterRegionPtr,
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aPreFilterBounds, aOverrideBBox);
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if (!instance.IsInitialized()) {
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return nsRect();
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}
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return instance.ComputePostFilterExtents();
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}
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FilterInstance::FilterInstance(
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nsIFrame* aTargetFrame, nsIContent* aTargetContent,
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const UserSpaceMetrics& aMetrics, Span<const StyleFilter> aFilterChain,
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bool aFilterInputIsTainted, SVGFilterPaintCallback* aPaintCallback,
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const gfxMatrix& aPaintTransform, const nsRegion* aPostFilterDirtyRegion,
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const nsRegion* aPreFilterDirtyRegion,
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const nsRect* aPreFilterInkOverflowRectOverride,
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const gfxRect* aOverrideBBox)
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: mTargetFrame(aTargetFrame),
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mTargetContent(aTargetContent),
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mMetrics(aMetrics),
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mPaintCallback(aPaintCallback),
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mPaintTransform(aPaintTransform),
|
|
mInitialized(false) {
|
|
if (aOverrideBBox) {
|
|
mTargetBBox = *aOverrideBBox;
|
|
} else {
|
|
MOZ_ASSERT(mTargetFrame,
|
|
"Need to supply a frame when there's no aOverrideBBox");
|
|
mTargetBBox =
|
|
SVGUtils::GetBBox(mTargetFrame, SVGUtils::eUseFrameBoundsForOuterSVG |
|
|
SVGUtils::eBBoxIncludeFillGeometry);
|
|
}
|
|
|
|
// Compute user space to filter space transforms.
|
|
if (!ComputeUserSpaceToFilterSpaceScale()) {
|
|
return;
|
|
}
|
|
|
|
if (!ComputeTargetBBoxInFilterSpace()) {
|
|
return;
|
|
}
|
|
|
|
// Get various transforms:
|
|
gfxMatrix filterToUserSpace(mFilterSpaceToUserSpaceScale.width, 0.0f, 0.0f,
|
|
mFilterSpaceToUserSpaceScale.height, 0.0f, 0.0f);
|
|
|
|
mFilterSpaceToFrameSpaceInCSSPxTransform =
|
|
filterToUserSpace * GetUserSpaceToFrameSpaceInCSSPxTransform();
|
|
// mFilterSpaceToFrameSpaceInCSSPxTransform is always invertible
|
|
mFrameSpaceInCSSPxToFilterSpaceTransform =
|
|
mFilterSpaceToFrameSpaceInCSSPxTransform;
|
|
mFrameSpaceInCSSPxToFilterSpaceTransform.Invert();
|
|
|
|
nsIntRect targetBounds;
|
|
if (aPreFilterInkOverflowRectOverride) {
|
|
targetBounds = FrameSpaceToFilterSpace(aPreFilterInkOverflowRectOverride);
|
|
} else if (mTargetFrame) {
|
|
nsRect preFilterVOR = mTargetFrame->PreEffectsInkOverflowRect();
|
|
targetBounds = FrameSpaceToFilterSpace(&preFilterVOR);
|
|
}
|
|
mTargetBounds.UnionRect(mTargetBBoxInFilterSpace, targetBounds);
|
|
|
|
// Build the filter graph.
|
|
if (NS_FAILED(
|
|
BuildPrimitives(aFilterChain, aTargetFrame, aFilterInputIsTainted))) {
|
|
return;
|
|
}
|
|
|
|
// Convert the passed in rects from frame space to filter space:
|
|
mPostFilterDirtyRegion = FrameSpaceToFilterSpace(aPostFilterDirtyRegion);
|
|
mPreFilterDirtyRegion = FrameSpaceToFilterSpace(aPreFilterDirtyRegion);
|
|
|
|
mInitialized = true;
|
|
}
|
|
|
|
bool FilterInstance::ComputeTargetBBoxInFilterSpace() {
|
|
gfxRect targetBBoxInFilterSpace = UserSpaceToFilterSpace(mTargetBBox);
|
|
targetBBoxInFilterSpace.RoundOut();
|
|
|
|
return gfxUtils::GfxRectToIntRect(targetBBoxInFilterSpace,
|
|
&mTargetBBoxInFilterSpace);
|
|
}
|
|
|
|
bool FilterInstance::ComputeUserSpaceToFilterSpaceScale() {
|
|
if (mTargetFrame) {
|
|
mUserSpaceToFilterSpaceScale = mPaintTransform.ScaleFactors();
|
|
if (mUserSpaceToFilterSpaceScale.width <= 0.0f ||
|
|
mUserSpaceToFilterSpaceScale.height <= 0.0f) {
|
|
// Nothing should be rendered.
|
|
return false;
|
|
}
|
|
} else {
|
|
mUserSpaceToFilterSpaceScale = gfxSize(1.0, 1.0);
|
|
}
|
|
|
|
mFilterSpaceToUserSpaceScale =
|
|
gfxSize(1.0f / mUserSpaceToFilterSpaceScale.width,
|
|
1.0f / mUserSpaceToFilterSpaceScale.height);
|
|
|
|
return true;
|
|
}
|
|
|
|
gfxRect FilterInstance::UserSpaceToFilterSpace(
|
|
const gfxRect& aUserSpaceRect) const {
|
|
gfxRect filterSpaceRect = aUserSpaceRect;
|
|
filterSpaceRect.Scale(mUserSpaceToFilterSpaceScale.width,
|
|
mUserSpaceToFilterSpaceScale.height);
|
|
return filterSpaceRect;
|
|
}
|
|
|
|
gfxRect FilterInstance::FilterSpaceToUserSpace(
|
|
const gfxRect& aFilterSpaceRect) const {
|
|
gfxRect userSpaceRect = aFilterSpaceRect;
|
|
userSpaceRect.Scale(mFilterSpaceToUserSpaceScale.width,
|
|
mFilterSpaceToUserSpaceScale.height);
|
|
return userSpaceRect;
|
|
}
|
|
|
|
nsresult FilterInstance::BuildPrimitives(Span<const StyleFilter> aFilterChain,
|
|
nsIFrame* aTargetFrame,
|
|
bool aFilterInputIsTainted) {
|
|
nsTArray<FilterPrimitiveDescription> primitiveDescriptions;
|
|
|
|
for (uint32_t i = 0; i < aFilterChain.Length(); i++) {
|
|
bool inputIsTainted = primitiveDescriptions.IsEmpty()
|
|
? aFilterInputIsTainted
|
|
: primitiveDescriptions.LastElement().IsTainted();
|
|
nsresult rv = BuildPrimitivesForFilter(
|
|
aFilterChain[i], aTargetFrame, inputIsTainted, primitiveDescriptions);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
mFilterDescription = FilterDescription(std::move(primitiveDescriptions));
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult FilterInstance::BuildPrimitivesForFilter(
|
|
const StyleFilter& aFilter, nsIFrame* aTargetFrame, bool aInputIsTainted,
|
|
nsTArray<FilterPrimitiveDescription>& aPrimitiveDescriptions) {
|
|
NS_ASSERTION(mUserSpaceToFilterSpaceScale.width > 0.0f &&
|
|
mFilterSpaceToUserSpaceScale.height > 0.0f,
|
|
"scale factors between spaces should be positive values");
|
|
|
|
if (aFilter.IsUrl()) {
|
|
// Build primitives for an SVG filter.
|
|
SVGFilterInstance svgFilterInstance(aFilter, aTargetFrame, mTargetContent,
|
|
mMetrics, mTargetBBox,
|
|
mUserSpaceToFilterSpaceScale);
|
|
if (!svgFilterInstance.IsInitialized()) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
return svgFilterInstance.BuildPrimitives(aPrimitiveDescriptions,
|
|
mInputImages, aInputIsTainted);
|
|
}
|
|
|
|
// Build primitives for a CSS filter.
|
|
|
|
// If we don't have a frame, use opaque black for shadows with unspecified
|
|
// shadow colors.
|
|
nscolor shadowFallbackColor =
|
|
mTargetFrame ? mTargetFrame->StyleText()->mColor.ToColor()
|
|
: NS_RGB(0, 0, 0);
|
|
|
|
CSSFilterInstance cssFilterInstance(aFilter, shadowFallbackColor,
|
|
mTargetBounds,
|
|
mFrameSpaceInCSSPxToFilterSpaceTransform);
|
|
return cssFilterInstance.BuildPrimitives(aPrimitiveDescriptions,
|
|
aInputIsTainted);
|
|
}
|
|
|
|
static void UpdateNeededBounds(const nsIntRegion& aRegion, nsIntRect& aBounds) {
|
|
aBounds = aRegion.GetBounds();
|
|
|
|
bool overflow;
|
|
IntSize surfaceSize =
|
|
SVGUtils::ConvertToSurfaceSize(SizeDouble(aBounds.Size()), &overflow);
|
|
if (overflow) {
|
|
aBounds.SizeTo(surfaceSize);
|
|
}
|
|
}
|
|
|
|
void FilterInstance::ComputeNeededBoxes() {
|
|
if (mFilterDescription.mPrimitives.IsEmpty()) {
|
|
return;
|
|
}
|
|
|
|
nsIntRegion sourceGraphicNeededRegion;
|
|
nsIntRegion fillPaintNeededRegion;
|
|
nsIntRegion strokePaintNeededRegion;
|
|
|
|
FilterSupport::ComputeSourceNeededRegions(
|
|
mFilterDescription, mPostFilterDirtyRegion, sourceGraphicNeededRegion,
|
|
fillPaintNeededRegion, strokePaintNeededRegion);
|
|
|
|
sourceGraphicNeededRegion.And(sourceGraphicNeededRegion, mTargetBounds);
|
|
|
|
UpdateNeededBounds(sourceGraphicNeededRegion, mSourceGraphic.mNeededBounds);
|
|
UpdateNeededBounds(fillPaintNeededRegion, mFillPaint.mNeededBounds);
|
|
UpdateNeededBounds(strokePaintNeededRegion, mStrokePaint.mNeededBounds);
|
|
}
|
|
|
|
void FilterInstance::BuildSourcePaint(SourceInfo* aSource,
|
|
imgDrawingParams& aImgParams) {
|
|
MOZ_ASSERT(mTargetFrame);
|
|
nsIntRect neededRect = aSource->mNeededBounds;
|
|
if (neededRect.IsEmpty()) {
|
|
return;
|
|
}
|
|
|
|
RefPtr<DrawTarget> offscreenDT =
|
|
gfxPlatform::GetPlatform()->CreateOffscreenContentDrawTarget(
|
|
neededRect.Size(), SurfaceFormat::B8G8R8A8);
|
|
if (!offscreenDT || !offscreenDT->IsValid()) {
|
|
return;
|
|
}
|
|
|
|
RefPtr<gfxContext> ctx = gfxContext::CreateOrNull(offscreenDT);
|
|
MOZ_ASSERT(ctx); // already checked the draw target above
|
|
gfxContextAutoSaveRestore saver(ctx);
|
|
|
|
ctx->SetMatrixDouble(mPaintTransform *
|
|
gfxMatrix::Translation(-neededRect.TopLeft()));
|
|
GeneralPattern pattern;
|
|
if (aSource == &mFillPaint) {
|
|
SVGUtils::MakeFillPatternFor(mTargetFrame, ctx, &pattern, aImgParams);
|
|
} else if (aSource == &mStrokePaint) {
|
|
SVGUtils::MakeStrokePatternFor(mTargetFrame, ctx, &pattern, aImgParams);
|
|
}
|
|
|
|
if (pattern.GetPattern()) {
|
|
offscreenDT->FillRect(
|
|
ToRect(FilterSpaceToUserSpace(ThebesRect(neededRect))), pattern);
|
|
}
|
|
|
|
aSource->mSourceSurface = offscreenDT->Snapshot();
|
|
aSource->mSurfaceRect = neededRect;
|
|
}
|
|
|
|
void FilterInstance::BuildSourcePaints(imgDrawingParams& aImgParams) {
|
|
if (!mFillPaint.mNeededBounds.IsEmpty()) {
|
|
BuildSourcePaint(&mFillPaint, aImgParams);
|
|
}
|
|
|
|
if (!mStrokePaint.mNeededBounds.IsEmpty()) {
|
|
BuildSourcePaint(&mStrokePaint, aImgParams);
|
|
}
|
|
}
|
|
|
|
void FilterInstance::BuildSourceImage(DrawTarget* aDest,
|
|
imgDrawingParams& aImgParams,
|
|
FilterNode* aFilter, FilterNode* aSource,
|
|
const Rect& aSourceRect) {
|
|
MOZ_ASSERT(mTargetFrame);
|
|
|
|
nsIntRect neededRect = mSourceGraphic.mNeededBounds;
|
|
if (neededRect.IsEmpty()) {
|
|
return;
|
|
}
|
|
|
|
RefPtr<DrawTarget> offscreenDT;
|
|
SurfaceFormat format = SurfaceFormat::B8G8R8A8;
|
|
if (aDest->CanCreateSimilarDrawTarget(neededRect.Size(), format)) {
|
|
offscreenDT = aDest->CreateSimilarDrawTargetForFilter(
|
|
neededRect.Size(), format, aFilter, aSource, aSourceRect, Point(0, 0));
|
|
}
|
|
if (!offscreenDT || !offscreenDT->IsValid()) {
|
|
return;
|
|
}
|
|
|
|
gfxRect r = FilterSpaceToUserSpace(ThebesRect(neededRect));
|
|
r.RoundOut();
|
|
nsIntRect dirty;
|
|
if (!gfxUtils::GfxRectToIntRect(r, &dirty)) {
|
|
return;
|
|
}
|
|
|
|
// SVG graphics paint to device space, so we need to set an initial device
|
|
// space to filter space transform on the gfxContext that SourceGraphic
|
|
// and SourceAlpha will paint to.
|
|
//
|
|
// (In theory it would be better to minimize error by having filtered SVG
|
|
// graphics temporarily paint to user space when painting the sources and
|
|
// only set a user space to filter space transform on the gfxContext
|
|
// (since that would eliminate the transform multiplications from user
|
|
// space to device space and back again). However, that would make the
|
|
// code more complex while being hard to get right without introducing
|
|
// subtle bugs, and in practice it probably makes no real difference.)
|
|
RefPtr<gfxContext> ctx = gfxContext::CreateOrNull(offscreenDT);
|
|
MOZ_ASSERT(ctx); // already checked the draw target above
|
|
gfxMatrix devPxToCssPxTM = SVGUtils::GetCSSPxToDevPxMatrix(mTargetFrame);
|
|
DebugOnly<bool> invertible = devPxToCssPxTM.Invert();
|
|
MOZ_ASSERT(invertible);
|
|
ctx->SetMatrixDouble(devPxToCssPxTM * mPaintTransform *
|
|
gfxMatrix::Translation(-neededRect.TopLeft()));
|
|
|
|
auto imageFlags = aImgParams.imageFlags;
|
|
if (mTargetFrame->HasAnyStateBits(NS_FRAME_IS_NONDISPLAY)) {
|
|
// We're coming from a mask or pattern instance. Patterns
|
|
// are painted into a separate surface and it seems we can't
|
|
// handle the differently sized surface that might be returned
|
|
// with FLAG_HIGH_QUALITY_SCALING
|
|
imageFlags &= ~imgIContainer::FLAG_HIGH_QUALITY_SCALING;
|
|
}
|
|
imgDrawingParams imgParams(imageFlags);
|
|
mPaintCallback->Paint(*ctx, mTargetFrame, mPaintTransform, &dirty, imgParams);
|
|
aImgParams.result = imgParams.result;
|
|
|
|
mSourceGraphic.mSourceSurface = offscreenDT->Snapshot();
|
|
mSourceGraphic.mSurfaceRect = neededRect;
|
|
}
|
|
|
|
void FilterInstance::Render(gfxContext* aCtx, imgDrawingParams& aImgParams,
|
|
float aOpacity) {
|
|
MOZ_ASSERT(mTargetFrame, "Need a frame for rendering");
|
|
|
|
if (mFilterDescription.mPrimitives.IsEmpty()) {
|
|
// An filter without any primitive. Treat it as success and paint nothing.
|
|
return;
|
|
}
|
|
|
|
nsIntRect filterRect =
|
|
mPostFilterDirtyRegion.GetBounds().Intersect(OutputFilterSpaceBounds());
|
|
if (filterRect.IsEmpty() || mPaintTransform.IsSingular()) {
|
|
return;
|
|
}
|
|
|
|
gfxContextMatrixAutoSaveRestore autoSR(aCtx);
|
|
aCtx->SetMatrix(
|
|
aCtx->CurrentMatrix().PreTranslate(filterRect.x, filterRect.y));
|
|
|
|
ComputeNeededBoxes();
|
|
|
|
Rect renderRect = IntRectToRect(filterRect);
|
|
RefPtr<DrawTarget> dt = aCtx->GetDrawTarget();
|
|
|
|
MOZ_ASSERT(dt);
|
|
if (!dt->IsValid()) {
|
|
return;
|
|
}
|
|
|
|
BuildSourcePaints(aImgParams);
|
|
RefPtr<FilterNode> sourceGraphic, fillPaint, strokePaint;
|
|
if (mFillPaint.mSourceSurface) {
|
|
fillPaint = FilterWrappers::ForSurface(dt, mFillPaint.mSourceSurface,
|
|
mFillPaint.mSurfaceRect.TopLeft());
|
|
}
|
|
if (mStrokePaint.mSourceSurface) {
|
|
strokePaint = FilterWrappers::ForSurface(
|
|
dt, mStrokePaint.mSourceSurface, mStrokePaint.mSurfaceRect.TopLeft());
|
|
}
|
|
|
|
// We make the sourceGraphic filter but don't set its inputs until after so
|
|
// that we can make the sourceGraphic size depend on the filter chain
|
|
sourceGraphic = dt->CreateFilter(FilterType::TRANSFORM);
|
|
if (sourceGraphic) {
|
|
// Make sure we set the translation before calling BuildSourceImage
|
|
// so that CreateSimilarDrawTargetForFilter works properly
|
|
IntPoint offset = mSourceGraphic.mNeededBounds.TopLeft();
|
|
sourceGraphic->SetAttribute(ATT_TRANSFORM_MATRIX,
|
|
Matrix::Translation(offset.x, offset.y));
|
|
}
|
|
|
|
RefPtr<FilterNode> resultFilter = FilterNodeGraphFromDescription(
|
|
dt, mFilterDescription, renderRect, sourceGraphic,
|
|
mSourceGraphic.mSurfaceRect, fillPaint, strokePaint, mInputImages);
|
|
|
|
if (!resultFilter) {
|
|
gfxWarning() << "Filter is NULL.";
|
|
return;
|
|
}
|
|
|
|
BuildSourceImage(dt, aImgParams, resultFilter, sourceGraphic, renderRect);
|
|
if (sourceGraphic) {
|
|
if (mSourceGraphic.mSourceSurface) {
|
|
sourceGraphic->SetInput(IN_TRANSFORM_IN, mSourceGraphic.mSourceSurface);
|
|
} else {
|
|
RefPtr<FilterNode> clear = FilterWrappers::Clear(aCtx->GetDrawTarget());
|
|
sourceGraphic->SetInput(IN_TRANSFORM_IN, clear);
|
|
}
|
|
}
|
|
|
|
dt->DrawFilter(resultFilter, renderRect, Point(0, 0), DrawOptions(aOpacity));
|
|
}
|
|
|
|
nsRegion FilterInstance::ComputePostFilterDirtyRegion() {
|
|
if (mPreFilterDirtyRegion.IsEmpty() ||
|
|
mFilterDescription.mPrimitives.IsEmpty()) {
|
|
return nsRegion();
|
|
}
|
|
|
|
nsIntRegion resultChangeRegion = FilterSupport::ComputeResultChangeRegion(
|
|
mFilterDescription, mPreFilterDirtyRegion, nsIntRegion(), nsIntRegion());
|
|
return FilterSpaceToFrameSpace(resultChangeRegion);
|
|
}
|
|
|
|
nsRect FilterInstance::ComputePostFilterExtents() {
|
|
if (mFilterDescription.mPrimitives.IsEmpty()) {
|
|
return nsRect();
|
|
}
|
|
|
|
nsIntRegion postFilterExtents = FilterSupport::ComputePostFilterExtents(
|
|
mFilterDescription, mTargetBounds);
|
|
return FilterSpaceToFrameSpace(postFilterExtents.GetBounds());
|
|
}
|
|
|
|
nsRect FilterInstance::ComputeSourceNeededRect() {
|
|
ComputeNeededBoxes();
|
|
return FilterSpaceToFrameSpace(mSourceGraphic.mNeededBounds);
|
|
}
|
|
|
|
nsIntRect FilterInstance::OutputFilterSpaceBounds() const {
|
|
uint32_t numPrimitives = mFilterDescription.mPrimitives.Length();
|
|
if (numPrimitives <= 0) {
|
|
return nsIntRect();
|
|
}
|
|
|
|
return mFilterDescription.mPrimitives[numPrimitives - 1].PrimitiveSubregion();
|
|
}
|
|
|
|
nsIntRect FilterInstance::FrameSpaceToFilterSpace(const nsRect* aRect) const {
|
|
nsIntRect rect = OutputFilterSpaceBounds();
|
|
if (aRect) {
|
|
if (aRect->IsEmpty()) {
|
|
return nsIntRect();
|
|
}
|
|
gfxRect rectInCSSPx =
|
|
nsLayoutUtils::RectToGfxRect(*aRect, AppUnitsPerCSSPixel());
|
|
gfxRect rectInFilterSpace =
|
|
mFrameSpaceInCSSPxToFilterSpaceTransform.TransformBounds(rectInCSSPx);
|
|
rectInFilterSpace.RoundOut();
|
|
nsIntRect intRect;
|
|
if (gfxUtils::GfxRectToIntRect(rectInFilterSpace, &intRect)) {
|
|
rect = intRect;
|
|
}
|
|
}
|
|
return rect;
|
|
}
|
|
|
|
nsRect FilterInstance::FilterSpaceToFrameSpace(const nsIntRect& aRect) const {
|
|
if (aRect.IsEmpty()) {
|
|
return nsRect();
|
|
}
|
|
gfxRect r(aRect.x, aRect.y, aRect.width, aRect.height);
|
|
r = mFilterSpaceToFrameSpaceInCSSPxTransform.TransformBounds(r);
|
|
// nsLayoutUtils::RoundGfxRectToAppRect rounds out.
|
|
return nsLayoutUtils::RoundGfxRectToAppRect(r, AppUnitsPerCSSPixel());
|
|
}
|
|
|
|
nsIntRegion FilterInstance::FrameSpaceToFilterSpace(
|
|
const nsRegion* aRegion) const {
|
|
if (!aRegion) {
|
|
return OutputFilterSpaceBounds();
|
|
}
|
|
nsIntRegion result;
|
|
for (auto iter = aRegion->RectIter(); !iter.Done(); iter.Next()) {
|
|
// FrameSpaceToFilterSpace rounds out, so this works.
|
|
nsRect rect = iter.Get();
|
|
result.Or(result, FrameSpaceToFilterSpace(&rect));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsRegion FilterInstance::FilterSpaceToFrameSpace(
|
|
const nsIntRegion& aRegion) const {
|
|
nsRegion result;
|
|
for (auto iter = aRegion.RectIter(); !iter.Done(); iter.Next()) {
|
|
// FilterSpaceToFrameSpace rounds out, so this works.
|
|
result.Or(result, FilterSpaceToFrameSpace(iter.Get()));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
gfxMatrix FilterInstance::GetUserSpaceToFrameSpaceInCSSPxTransform() const {
|
|
if (!mTargetFrame) {
|
|
return gfxMatrix();
|
|
}
|
|
return gfxMatrix::Translation(
|
|
-SVGUtils::FrameSpaceInCSSPxToUserSpaceOffset(mTargetFrame));
|
|
}
|
|
|
|
} // namespace mozilla
|