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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#include "FilterSupport.h"
#include "FilterDescription.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/gfx/Filters.h"
#include "mozilla/gfx/Logging.h"
#include "mozilla/ArrayUtils.h"
#include "mozilla/PodOperations.h"
#include "gfxContext.h"
#include "gfxPattern.h"
#include "gfxPlatform.h"
#include "gfxUtils.h"
#include "gfx2DGlue.h"
#include "nsMargin.h"
// c = n / 255
// c <= 0.0031308f ? c * 12.92f : 1.055f * powf(c, 1 / 2.4f) - 0.055f
static const float glinearRGBTosRGBMap[256] = {
0.000f, 0.050f, 0.085f, 0.111f, 0.132f, 0.150f, 0.166f, 0.181f, 0.194f,
0.207f, 0.219f, 0.230f, 0.240f, 0.250f, 0.260f, 0.269f, 0.278f, 0.286f,
0.295f, 0.303f, 0.310f, 0.318f, 0.325f, 0.332f, 0.339f, 0.346f, 0.352f,
0.359f, 0.365f, 0.371f, 0.378f, 0.383f, 0.389f, 0.395f, 0.401f, 0.406f,
0.412f, 0.417f, 0.422f, 0.427f, 0.433f, 0.438f, 0.443f, 0.448f, 0.452f,
0.457f, 0.462f, 0.466f, 0.471f, 0.476f, 0.480f, 0.485f, 0.489f, 0.493f,
0.498f, 0.502f, 0.506f, 0.510f, 0.514f, 0.518f, 0.522f, 0.526f, 0.530f,
0.534f, 0.538f, 0.542f, 0.546f, 0.549f, 0.553f, 0.557f, 0.561f, 0.564f,
0.568f, 0.571f, 0.575f, 0.579f, 0.582f, 0.586f, 0.589f, 0.592f, 0.596f,
0.599f, 0.603f, 0.606f, 0.609f, 0.613f, 0.616f, 0.619f, 0.622f, 0.625f,
0.629f, 0.632f, 0.635f, 0.638f, 0.641f, 0.644f, 0.647f, 0.650f, 0.653f,
0.656f, 0.659f, 0.662f, 0.665f, 0.668f, 0.671f, 0.674f, 0.677f, 0.680f,
0.683f, 0.685f, 0.688f, 0.691f, 0.694f, 0.697f, 0.699f, 0.702f, 0.705f,
0.708f, 0.710f, 0.713f, 0.716f, 0.718f, 0.721f, 0.724f, 0.726f, 0.729f,
0.731f, 0.734f, 0.737f, 0.739f, 0.742f, 0.744f, 0.747f, 0.749f, 0.752f,
0.754f, 0.757f, 0.759f, 0.762f, 0.764f, 0.767f, 0.769f, 0.772f, 0.774f,
0.776f, 0.779f, 0.781f, 0.784f, 0.786f, 0.788f, 0.791f, 0.793f, 0.795f,
0.798f, 0.800f, 0.802f, 0.805f, 0.807f, 0.809f, 0.812f, 0.814f, 0.816f,
0.818f, 0.821f, 0.823f, 0.825f, 0.827f, 0.829f, 0.832f, 0.834f, 0.836f,
0.838f, 0.840f, 0.843f, 0.845f, 0.847f, 0.849f, 0.851f, 0.853f, 0.855f,
0.857f, 0.860f, 0.862f, 0.864f, 0.866f, 0.868f, 0.870f, 0.872f, 0.874f,
0.876f, 0.878f, 0.880f, 0.882f, 0.884f, 0.886f, 0.888f, 0.890f, 0.892f,
0.894f, 0.896f, 0.898f, 0.900f, 0.902f, 0.904f, 0.906f, 0.908f, 0.910f,
0.912f, 0.914f, 0.916f, 0.918f, 0.920f, 0.922f, 0.924f, 0.926f, 0.928f,
0.930f, 0.931f, 0.933f, 0.935f, 0.937f, 0.939f, 0.941f, 0.943f, 0.945f,
0.946f, 0.948f, 0.950f, 0.952f, 0.954f, 0.956f, 0.957f, 0.959f, 0.961f,
0.963f, 0.965f, 0.967f, 0.968f, 0.970f, 0.972f, 0.974f, 0.975f, 0.977f,
0.979f, 0.981f, 0.983f, 0.984f, 0.986f, 0.988f, 0.990f, 0.991f, 0.993f,
0.995f, 0.997f, 0.998f, 1.000f};
// c = n / 255
// c <= 0.04045f ? c / 12.92f : powf((c + 0.055f) / 1.055f, 2.4f)
extern const float gsRGBToLinearRGBMap[256] = {
0.000f, 0.000f, 0.001f, 0.001f, 0.001f, 0.002f, 0.002f, 0.002f, 0.002f,
0.003f, 0.003f, 0.003f, 0.004f, 0.004f, 0.004f, 0.005f, 0.005f, 0.006f,
0.006f, 0.007f, 0.007f, 0.007f, 0.008f, 0.009f, 0.009f, 0.010f, 0.010f,
0.011f, 0.012f, 0.012f, 0.013f, 0.014f, 0.014f, 0.015f, 0.016f, 0.017f,
0.018f, 0.019f, 0.019f, 0.020f, 0.021f, 0.022f, 0.023f, 0.024f, 0.025f,
0.026f, 0.027f, 0.028f, 0.030f, 0.031f, 0.032f, 0.033f, 0.034f, 0.036f,
0.037f, 0.038f, 0.040f, 0.041f, 0.042f, 0.044f, 0.045f, 0.047f, 0.048f,
0.050f, 0.051f, 0.053f, 0.054f, 0.056f, 0.058f, 0.060f, 0.061f, 0.063f,
0.065f, 0.067f, 0.068f, 0.070f, 0.072f, 0.074f, 0.076f, 0.078f, 0.080f,
0.082f, 0.084f, 0.087f, 0.089f, 0.091f, 0.093f, 0.095f, 0.098f, 0.100f,
0.102f, 0.105f, 0.107f, 0.109f, 0.112f, 0.114f, 0.117f, 0.120f, 0.122f,
0.125f, 0.127f, 0.130f, 0.133f, 0.136f, 0.138f, 0.141f, 0.144f, 0.147f,
0.150f, 0.153f, 0.156f, 0.159f, 0.162f, 0.165f, 0.168f, 0.171f, 0.175f,
0.178f, 0.181f, 0.184f, 0.188f, 0.191f, 0.195f, 0.198f, 0.202f, 0.205f,
0.209f, 0.212f, 0.216f, 0.220f, 0.223f, 0.227f, 0.231f, 0.235f, 0.238f,
0.242f, 0.246f, 0.250f, 0.254f, 0.258f, 0.262f, 0.266f, 0.270f, 0.275f,
0.279f, 0.283f, 0.287f, 0.292f, 0.296f, 0.301f, 0.305f, 0.309f, 0.314f,
0.319f, 0.323f, 0.328f, 0.332f, 0.337f, 0.342f, 0.347f, 0.352f, 0.356f,
0.361f, 0.366f, 0.371f, 0.376f, 0.381f, 0.386f, 0.392f, 0.397f, 0.402f,
0.407f, 0.413f, 0.418f, 0.423f, 0.429f, 0.434f, 0.440f, 0.445f, 0.451f,
0.456f, 0.462f, 0.468f, 0.474f, 0.479f, 0.485f, 0.491f, 0.497f, 0.503f,
0.509f, 0.515f, 0.521f, 0.527f, 0.533f, 0.539f, 0.546f, 0.552f, 0.558f,
0.565f, 0.571f, 0.578f, 0.584f, 0.591f, 0.597f, 0.604f, 0.610f, 0.617f,
0.624f, 0.631f, 0.638f, 0.644f, 0.651f, 0.658f, 0.665f, 0.672f, 0.680f,
0.687f, 0.694f, 0.701f, 0.708f, 0.716f, 0.723f, 0.730f, 0.738f, 0.745f,
0.753f, 0.761f, 0.768f, 0.776f, 0.784f, 0.791f, 0.799f, 0.807f, 0.815f,
0.823f, 0.831f, 0.839f, 0.847f, 0.855f, 0.863f, 0.871f, 0.880f, 0.888f,
0.896f, 0.905f, 0.913f, 0.922f, 0.930f, 0.939f, 0.947f, 0.956f, 0.965f,
0.973f, 0.982f, 0.991f, 1.000f};
namespace mozilla {
namespace gfx {
// Some convenience FilterNode creation functions.
namespace FilterWrappers {
static already_AddRefed<FilterNode> Unpremultiply(DrawTarget* aDT,
FilterNode* aInput) {
RefPtr<FilterNode> filter = aDT->CreateFilter(FilterType::UNPREMULTIPLY);
if (filter) {
filter->SetInput(IN_UNPREMULTIPLY_IN, aInput);
return filter.forget();
}
return nullptr;
}
static already_AddRefed<FilterNode> Premultiply(DrawTarget* aDT,
FilterNode* aInput) {
RefPtr<FilterNode> filter = aDT->CreateFilter(FilterType::PREMULTIPLY);
if (filter) {
filter->SetInput(IN_PREMULTIPLY_IN, aInput);
return filter.forget();
}
return nullptr;
}
static already_AddRefed<FilterNode> LinearRGBToSRGB(DrawTarget* aDT,
FilterNode* aInput) {
RefPtr<FilterNode> transfer =
aDT->CreateFilter(FilterType::DISCRETE_TRANSFER);
if (transfer) {
transfer->SetAttribute(ATT_DISCRETE_TRANSFER_DISABLE_R, false);
transfer->SetAttribute(ATT_DISCRETE_TRANSFER_TABLE_R, glinearRGBTosRGBMap,
256);
transfer->SetAttribute(ATT_DISCRETE_TRANSFER_DISABLE_G, false);
transfer->SetAttribute(ATT_DISCRETE_TRANSFER_TABLE_G, glinearRGBTosRGBMap,
256);
transfer->SetAttribute(ATT_DISCRETE_TRANSFER_DISABLE_B, false);
transfer->SetAttribute(ATT_DISCRETE_TRANSFER_TABLE_B, glinearRGBTosRGBMap,
256);
transfer->SetAttribute(ATT_DISCRETE_TRANSFER_DISABLE_A, true);
transfer->SetInput(IN_DISCRETE_TRANSFER_IN, aInput);
return transfer.forget();
}
return nullptr;
}
static already_AddRefed<FilterNode> SRGBToLinearRGB(DrawTarget* aDT,
FilterNode* aInput) {
RefPtr<FilterNode> transfer =
aDT->CreateFilter(FilterType::DISCRETE_TRANSFER);
if (transfer) {
transfer->SetAttribute(ATT_DISCRETE_TRANSFER_DISABLE_R, false);
transfer->SetAttribute(ATT_DISCRETE_TRANSFER_TABLE_R, gsRGBToLinearRGBMap,
256);
transfer->SetAttribute(ATT_DISCRETE_TRANSFER_DISABLE_G, false);
transfer->SetAttribute(ATT_DISCRETE_TRANSFER_TABLE_G, gsRGBToLinearRGBMap,
256);
transfer->SetAttribute(ATT_DISCRETE_TRANSFER_DISABLE_B, false);
transfer->SetAttribute(ATT_DISCRETE_TRANSFER_TABLE_B, gsRGBToLinearRGBMap,
256);
transfer->SetAttribute(ATT_DISCRETE_TRANSFER_DISABLE_A, true);
transfer->SetInput(IN_DISCRETE_TRANSFER_IN, aInput);
return transfer.forget();
}
return nullptr;
}
static already_AddRefed<FilterNode> Crop(DrawTarget* aDT,
FilterNode* aInputFilter,
const IntRect& aRect) {
RefPtr<FilterNode> filter = aDT->CreateFilter(FilterType::CROP);
if (filter) {
filter->SetAttribute(ATT_CROP_RECT, Rect(aRect));
filter->SetInput(IN_CROP_IN, aInputFilter);
return filter.forget();
}
return nullptr;
}
static already_AddRefed<FilterNode> Offset(DrawTarget* aDT,
FilterNode* aInputFilter,
const IntPoint& aOffset) {
RefPtr<FilterNode> filter = aDT->CreateFilter(FilterType::TRANSFORM);
if (filter) {
filter->SetAttribute(ATT_TRANSFORM_MATRIX,
Matrix::Translation(aOffset.x, aOffset.y));
filter->SetInput(IN_TRANSFORM_IN, aInputFilter);
return filter.forget();
}
return nullptr;
}
static already_AddRefed<FilterNode> GaussianBlur(DrawTarget* aDT,
FilterNode* aInputFilter,
const Size& aStdDeviation) {
float stdX = float(std::min(aStdDeviation.width, kMaxStdDeviation));
float stdY = float(std::min(aStdDeviation.height, kMaxStdDeviation));
if (stdX == stdY) {
RefPtr<FilterNode> filter = aDT->CreateFilter(FilterType::GAUSSIAN_BLUR);
if (filter) {
filter->SetAttribute(ATT_GAUSSIAN_BLUR_STD_DEVIATION, stdX);
filter->SetInput(IN_GAUSSIAN_BLUR_IN, aInputFilter);
return filter.forget();
}
return nullptr;
}
RefPtr<FilterNode> filterH = aDT->CreateFilter(FilterType::DIRECTIONAL_BLUR);
RefPtr<FilterNode> filterV = aDT->CreateFilter(FilterType::DIRECTIONAL_BLUR);
if (filterH && filterV) {
filterH->SetAttribute(ATT_DIRECTIONAL_BLUR_DIRECTION,
(uint32_t)BLUR_DIRECTION_X);
filterH->SetAttribute(ATT_DIRECTIONAL_BLUR_STD_DEVIATION, stdX);
filterV->SetAttribute(ATT_DIRECTIONAL_BLUR_DIRECTION,
(uint32_t)BLUR_DIRECTION_Y);
filterV->SetAttribute(ATT_DIRECTIONAL_BLUR_STD_DEVIATION, stdY);
filterH->SetInput(IN_DIRECTIONAL_BLUR_IN, aInputFilter);
filterV->SetInput(IN_DIRECTIONAL_BLUR_IN, filterH);
return filterV.forget();
}
return nullptr;
}
already_AddRefed<FilterNode> Clear(DrawTarget* aDT) {
RefPtr<FilterNode> filter = aDT->CreateFilter(FilterType::FLOOD);
if (filter) {
filter->SetAttribute(ATT_FLOOD_COLOR, DeviceColor());
return filter.forget();
}
return nullptr;
}
already_AddRefed<FilterNode> ForSurface(DrawTarget* aDT,
SourceSurface* aSurface,
const IntPoint& aSurfacePosition) {
RefPtr<FilterNode> filter = aDT->CreateFilter(FilterType::TRANSFORM);
if (filter) {
filter->SetAttribute(
ATT_TRANSFORM_MATRIX,
Matrix::Translation(aSurfacePosition.x, aSurfacePosition.y));
filter->SetInput(IN_TRANSFORM_IN, aSurface);
return filter.forget();
}
return nullptr;
}
static already_AddRefed<FilterNode> ToAlpha(DrawTarget* aDT,
FilterNode* aInput) {
float zero = 0.0f;
RefPtr<FilterNode> transfer =
aDT->CreateFilter(FilterType::DISCRETE_TRANSFER);
if (transfer) {
transfer->SetAttribute(ATT_DISCRETE_TRANSFER_DISABLE_R, false);
transfer->SetAttribute(ATT_DISCRETE_TRANSFER_TABLE_R, &zero, 1);
transfer->SetAttribute(ATT_DISCRETE_TRANSFER_DISABLE_G, false);
transfer->SetAttribute(ATT_DISCRETE_TRANSFER_TABLE_G, &zero, 1);
transfer->SetAttribute(ATT_DISCRETE_TRANSFER_DISABLE_B, false);
transfer->SetAttribute(ATT_DISCRETE_TRANSFER_TABLE_B, &zero, 1);
transfer->SetAttribute(ATT_DISCRETE_TRANSFER_DISABLE_A, true);
transfer->SetInput(IN_DISCRETE_TRANSFER_IN, aInput);
return transfer.forget();
}
return nullptr;
}
} // namespace FilterWrappers
// A class that wraps a FilterNode and handles conversion between different
// color models. Create FilterCachedColorModels with your original filter and
// the color model that this filter outputs in natively, and then call
// ->ForColorModel(colorModel) in order to get a FilterNode which outputs to
// the specified colorModel.
// Internally, this is achieved by wrapping the original FilterNode with
// conversion FilterNodes. These filter nodes are cached in such a way that no
// repeated or back-and-forth conversions happen.
class FilterCachedColorModels {
public:
NS_INLINE_DECL_REFCOUNTING(FilterCachedColorModels)
// aFilter can be null. In that case, ForColorModel will return a non-null
// completely transparent filter for all color models.
FilterCachedColorModels(DrawTarget* aDT, FilterNode* aFilter,
ColorModel aOriginalColorModel);
// Get a FilterNode for the specified color model, guaranteed to be non-null.
already_AddRefed<FilterNode> ForColorModel(ColorModel aColorModel);
AlphaModel OriginalAlphaModel() const {
return mOriginalColorModel.mAlphaModel;
}
private:
// Create the required FilterNode that will be cached by ForColorModel.
already_AddRefed<FilterNode> WrapForColorModel(ColorModel aColorModel);
RefPtr<DrawTarget> mDT;
ColorModel mOriginalColorModel;
// This array is indexed by ColorModel::ToIndex.
RefPtr<FilterNode> mFilterForColorModel[4];
~FilterCachedColorModels() = default;
};
FilterCachedColorModels::FilterCachedColorModels(DrawTarget* aDT,
FilterNode* aFilter,
ColorModel aOriginalColorModel)
: mDT(aDT), mOriginalColorModel(aOriginalColorModel) {
if (aFilter) {
mFilterForColorModel[aOriginalColorModel.ToIndex()] = aFilter;
} else {
RefPtr<FilterNode> clear = FilterWrappers::Clear(aDT);
mFilterForColorModel[0] = clear;
mFilterForColorModel[1] = clear;
mFilterForColorModel[2] = clear;
mFilterForColorModel[3] = clear;
}
}
already_AddRefed<FilterNode> FilterCachedColorModels::ForColorModel(
ColorModel aColorModel) {
if (aColorModel == mOriginalColorModel) {
// Make sure to not call WrapForColorModel if our original filter node was
// null, because then we'd get an infinite recursion.
RefPtr<FilterNode> filter =
mFilterForColorModel[mOriginalColorModel.ToIndex()];
return filter.forget();
}
if (!mFilterForColorModel[aColorModel.ToIndex()]) {
mFilterForColorModel[aColorModel.ToIndex()] =
WrapForColorModel(aColorModel);
}
RefPtr<FilterNode> filter(mFilterForColorModel[aColorModel.ToIndex()]);
return filter.forget();
}
already_AddRefed<FilterNode> FilterCachedColorModels::WrapForColorModel(
ColorModel aColorModel) {
// Convert one aspect at a time and recurse.
// Conversions between premultiplied / unpremultiplied color channels for the
// same color space can happen directly.
// Conversions between different color spaces can only happen on
// unpremultiplied color channels.
if (aColorModel.mAlphaModel == AlphaModel::Premultiplied) {
RefPtr<FilterNode> unpre = ForColorModel(
ColorModel(aColorModel.mColorSpace, AlphaModel::Unpremultiplied));
return FilterWrappers::Premultiply(mDT, unpre);
}
MOZ_ASSERT(aColorModel.mAlphaModel == AlphaModel::Unpremultiplied);
if (aColorModel.mColorSpace == mOriginalColorModel.mColorSpace) {
RefPtr<FilterNode> premultiplied = ForColorModel(
ColorModel(aColorModel.mColorSpace, AlphaModel::Premultiplied));
return FilterWrappers::Unpremultiply(mDT, premultiplied);
}
RefPtr<FilterNode> unpremultipliedOriginal = ForColorModel(
ColorModel(mOriginalColorModel.mColorSpace, AlphaModel::Unpremultiplied));
if (aColorModel.mColorSpace == ColorSpace::LinearRGB) {
return FilterWrappers::SRGBToLinearRGB(mDT, unpremultipliedOriginal);
}
return FilterWrappers::LinearRGBToSRGB(mDT, unpremultipliedOriginal);
}
static const float identityMatrix[] = {1, 0, 0, 0, 0, 0, 1, 0, 0, 0,
0, 0, 1, 0, 0, 0, 0, 0, 1, 0};
// When aAmount == 0, the identity matrix is returned.
// When aAmount == 1, aToMatrix is returned.
// When aAmount > 1, an exaggerated version of aToMatrix is returned. This can
// be useful in certain cases, such as producing a color matrix to oversaturate
// an image.
//
// This function is a shortcut of a full matrix addition and a scalar multiply,
// and it assumes that the following elements in aToMatrix are 0 and 1:
// x x x 0 0
// x x x 0 0
// x x x 0 0
// 0 0 0 1 0
static void InterpolateFromIdentityMatrix(const float aToMatrix[20],
float aAmount, float aOutMatrix[20]) {
PodCopy(aOutMatrix, identityMatrix, 20);
float oneMinusAmount = 1 - aAmount;
aOutMatrix[0] = aAmount * aToMatrix[0] + oneMinusAmount;
aOutMatrix[1] = aAmount * aToMatrix[1];
aOutMatrix[2] = aAmount * aToMatrix[2];
aOutMatrix[5] = aAmount * aToMatrix[5];
aOutMatrix[6] = aAmount * aToMatrix[6] + oneMinusAmount;
aOutMatrix[7] = aAmount * aToMatrix[7];
aOutMatrix[10] = aAmount * aToMatrix[10];
aOutMatrix[11] = aAmount * aToMatrix[11];
aOutMatrix[12] = aAmount * aToMatrix[12] + oneMinusAmount;
}
// Create a 4x5 color matrix for the different ways to specify color matrices
// in SVG.
bool ComputeColorMatrix(const ColorMatrixAttributes& aMatrixAttributes,
float aOutMatrix[20]) {
// Luminance coefficients.
static const float lumR = 0.2126f;
static const float lumG = 0.7152f;
static const float lumB = 0.0722f;
static const float oneMinusLumR = 1 - lumR;
static const float oneMinusLumG = 1 - lumG;
static const float oneMinusLumB = 1 - lumB;
static const float luminanceToAlphaMatrix[] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, lumR, lumG, lumB, 0, 0};
static const float saturateMatrix[] = {
lumR, lumG, lumB, 0, 0, lumR, lumG, lumB, 0, 0,
lumR, lumG, lumB, 0, 0, 0, 0, 0, 1, 0};
static const float sepiaMatrix[] = {
0.393f, 0.769f, 0.189f, 0, 0, 0.349f, 0.686f, 0.168f, 0, 0,
0.272f, 0.534f, 0.131f, 0, 0, 0, 0, 0, 1, 0};
// Hue rotate specific coefficients.
static const float hueRotateR = 0.143f;
static const float hueRotateG = 0.140f;
static const float hueRotateB = 0.283f;
switch (aMatrixAttributes.mType) {
case SVG_FECOLORMATRIX_TYPE_MATRIX: {
if (aMatrixAttributes.mValues.Length() != 20) {
return false;
}
PodCopy(aOutMatrix, aMatrixAttributes.mValues.Elements(), 20);
break;
}
case SVG_FECOLORMATRIX_TYPE_SATURATE: {
if (aMatrixAttributes.mValues.Length() != 1) {
return false;
}
float s = aMatrixAttributes.mValues[0];
if (s < 0) {
return false;
}
InterpolateFromIdentityMatrix(saturateMatrix, 1 - s, aOutMatrix);
break;
}
case SVG_FECOLORMATRIX_TYPE_HUE_ROTATE: {
if (aMatrixAttributes.mValues.Length() != 1) {
return false;
}
PodCopy(aOutMatrix, identityMatrix, 20);
float hueRotateValue = aMatrixAttributes.mValues[0];
float c = static_cast<float>(cos(hueRotateValue * M_PI / 180));
float s = static_cast<float>(sin(hueRotateValue * M_PI / 180));
aOutMatrix[0] = lumR + oneMinusLumR * c - lumR * s;
aOutMatrix[1] = lumG - lumG * c - lumG * s;
aOutMatrix[2] = lumB - lumB * c + oneMinusLumB * s;
aOutMatrix[5] = lumR - lumR * c + hueRotateR * s;
aOutMatrix[6] = lumG + oneMinusLumG * c + hueRotateG * s;
aOutMatrix[7] = lumB - lumB * c - hueRotateB * s;
aOutMatrix[10] = lumR - lumR * c - oneMinusLumR * s;
aOutMatrix[11] = lumG - lumG * c + lumG * s;
aOutMatrix[12] = lumB + oneMinusLumB * c + lumB * s;
break;
}
case SVG_FECOLORMATRIX_TYPE_LUMINANCE_TO_ALPHA: {
PodCopy(aOutMatrix, luminanceToAlphaMatrix, 20);
break;
}
case SVG_FECOLORMATRIX_TYPE_SEPIA: {
if (aMatrixAttributes.mValues.Length() != 1) {
return false;
}
float amount = aMatrixAttributes.mValues[0];
if (amount < 0 || amount > 1) {
return false;
}
InterpolateFromIdentityMatrix(sepiaMatrix, amount, aOutMatrix);
break;
}
default: {
return false;
}
}
return !ArrayEqual(aOutMatrix, identityMatrix, 20);
}
static void DisableAllTransfers(FilterNode* aTransferFilterNode) {
aTransferFilterNode->SetAttribute(ATT_TRANSFER_DISABLE_R, true);
aTransferFilterNode->SetAttribute(ATT_TRANSFER_DISABLE_G, true);
aTransferFilterNode->SetAttribute(ATT_TRANSFER_DISABLE_B, true);
aTransferFilterNode->SetAttribute(ATT_TRANSFER_DISABLE_A, true);
}
// Called for one channel at a time.
// This function creates the required FilterNodes on demand and tries to
// merge conversions of different channels into the same FilterNode if
// possible.
// There's a mismatch between the way SVG and the Moz2D API handle transfer
// functions: In SVG, it's possible to specify a different transfer function
// type for each color channel, but in Moz2D, a given transfer function type
// applies to all color channels.
//
// @param aFunctionAttributes The attributes of the transfer function for this
// channel.
// @param aChannel The color channel that this function applies to, where
// 0 = red, 1 = green, 2 = blue, 3 = alpha
// @param aDT The DrawTarget that the FilterNodes should be created for.
// @param aTableTransfer Existing FilterNode holders (which may still be
// null) that the resulting FilterNodes from this
// function will be stored in.
//
static void ConvertComponentTransferFunctionToFilter(
const ComponentTransferAttributes& aFunctionAttributes, int32_t aInChannel,
int32_t aOutChannel, DrawTarget* aDT, RefPtr<FilterNode>& aTableTransfer,
RefPtr<FilterNode>& aDiscreteTransfer, RefPtr<FilterNode>& aLinearTransfer,
RefPtr<FilterNode>& aGammaTransfer) {
static const TransferAtts disableAtt[4] = {
ATT_TRANSFER_DISABLE_R, ATT_TRANSFER_DISABLE_G, ATT_TRANSFER_DISABLE_B,
ATT_TRANSFER_DISABLE_A};
RefPtr<FilterNode> filter;
uint32_t type = aFunctionAttributes.mTypes[aInChannel];
switch (type) {
case SVG_FECOMPONENTTRANSFER_TYPE_TABLE: {
const nsTArray<float>& tableValues =
aFunctionAttributes.mValues[aInChannel];
if (tableValues.Length() < 2) return;
if (!aTableTransfer) {
aTableTransfer = aDT->CreateFilter(FilterType::TABLE_TRANSFER);
if (!aTableTransfer) {
return;
}
DisableAllTransfers(aTableTransfer);
}
filter = aTableTransfer;
static const TableTransferAtts tableAtt[4] = {
ATT_TABLE_TRANSFER_TABLE_R, ATT_TABLE_TRANSFER_TABLE_G,
ATT_TABLE_TRANSFER_TABLE_B, ATT_TABLE_TRANSFER_TABLE_A};
filter->SetAttribute(disableAtt[aOutChannel], false);
filter->SetAttribute(tableAtt[aOutChannel], &tableValues[0],
tableValues.Length());
break;
}
case SVG_FECOMPONENTTRANSFER_TYPE_DISCRETE: {
const nsTArray<float>& tableValues =
aFunctionAttributes.mValues[aInChannel];
if (tableValues.Length() < 1) return;
if (!aDiscreteTransfer) {
aDiscreteTransfer = aDT->CreateFilter(FilterType::DISCRETE_TRANSFER);
if (!aDiscreteTransfer) {
return;
}
DisableAllTransfers(aDiscreteTransfer);
}
filter = aDiscreteTransfer;
static const DiscreteTransferAtts tableAtt[4] = {
ATT_DISCRETE_TRANSFER_TABLE_R, ATT_DISCRETE_TRANSFER_TABLE_G,
ATT_DISCRETE_TRANSFER_TABLE_B, ATT_DISCRETE_TRANSFER_TABLE_A};
filter->SetAttribute(disableAtt[aOutChannel], false);
filter->SetAttribute(tableAtt[aOutChannel], &tableValues[0],
tableValues.Length());
break;
}
case SVG_FECOMPONENTTRANSFER_TYPE_LINEAR: {
static const LinearTransferAtts slopeAtt[4] = {
ATT_LINEAR_TRANSFER_SLOPE_R, ATT_LINEAR_TRANSFER_SLOPE_G,
ATT_LINEAR_TRANSFER_SLOPE_B, ATT_LINEAR_TRANSFER_SLOPE_A};
static const LinearTransferAtts interceptAtt[4] = {
ATT_LINEAR_TRANSFER_INTERCEPT_R, ATT_LINEAR_TRANSFER_INTERCEPT_G,
ATT_LINEAR_TRANSFER_INTERCEPT_B, ATT_LINEAR_TRANSFER_INTERCEPT_A};
if (!aLinearTransfer) {
aLinearTransfer = aDT->CreateFilter(FilterType::LINEAR_TRANSFER);
if (!aLinearTransfer) {
return;
}
DisableAllTransfers(aLinearTransfer);
}
filter = aLinearTransfer;
filter->SetAttribute(disableAtt[aOutChannel], false);
const nsTArray<float>& slopeIntercept =
aFunctionAttributes.mValues[aInChannel];
float slope = slopeIntercept[kComponentTransferSlopeIndex];
float intercept = slopeIntercept[kComponentTransferInterceptIndex];
filter->SetAttribute(slopeAtt[aOutChannel], slope);
filter->SetAttribute(interceptAtt[aOutChannel], intercept);
break;
}
case SVG_FECOMPONENTTRANSFER_TYPE_GAMMA: {
static const GammaTransferAtts amplitudeAtt[4] = {
ATT_GAMMA_TRANSFER_AMPLITUDE_R, ATT_GAMMA_TRANSFER_AMPLITUDE_G,
ATT_GAMMA_TRANSFER_AMPLITUDE_B, ATT_GAMMA_TRANSFER_AMPLITUDE_A};
static const GammaTransferAtts exponentAtt[4] = {
ATT_GAMMA_TRANSFER_EXPONENT_R, ATT_GAMMA_TRANSFER_EXPONENT_G,
ATT_GAMMA_TRANSFER_EXPONENT_B, ATT_GAMMA_TRANSFER_EXPONENT_A};
static const GammaTransferAtts offsetAtt[4] = {
ATT_GAMMA_TRANSFER_OFFSET_R, ATT_GAMMA_TRANSFER_OFFSET_G,
ATT_GAMMA_TRANSFER_OFFSET_B, ATT_GAMMA_TRANSFER_OFFSET_A};
if (!aGammaTransfer) {
aGammaTransfer = aDT->CreateFilter(FilterType::GAMMA_TRANSFER);
if (!aGammaTransfer) {
return;
}
DisableAllTransfers(aGammaTransfer);
}
filter = aGammaTransfer;
filter->SetAttribute(disableAtt[aOutChannel], false);
const nsTArray<float>& gammaValues =
aFunctionAttributes.mValues[aInChannel];
float amplitude = gammaValues[kComponentTransferAmplitudeIndex];
float exponent = gammaValues[kComponentTransferExponentIndex];
float offset = gammaValues[kComponentTransferOffsetIndex];
filter->SetAttribute(amplitudeAtt[aOutChannel], amplitude);
filter->SetAttribute(exponentAtt[aOutChannel], exponent);
filter->SetAttribute(offsetAtt[aOutChannel], offset);
break;
}
case SVG_FECOMPONENTTRANSFER_TYPE_IDENTITY:
default:
break;
}
}
const int32_t kMorphologyMaxRadius = 100000;
// Handle the different primitive description types and create the necessary
// FilterNode(s) for each.
// Returns nullptr for invalid filter primitives. This should be interpreted as
// transparent black by the caller.
// aSourceRegions contains the filter primitive subregions of the source
// primitives; only needed for eTile primitives.
// aInputImages carries additional surfaces that are used by eImage primitives.
static already_AddRefed<FilterNode> FilterNodeFromPrimitiveDescription(
const FilterPrimitiveDescription& aDescription, DrawTarget* aDT,
nsTArray<RefPtr<FilterNode>>& aSources, nsTArray<IntRect>& aSourceRegions,
nsTArray<RefPtr<SourceSurface>>& aInputImages) {
struct PrimitiveAttributesMatcher {
PrimitiveAttributesMatcher(const FilterPrimitiveDescription& aDescription,
DrawTarget* aDT,
nsTArray<RefPtr<FilterNode>>& aSources,
nsTArray<IntRect>& aSourceRegions,
nsTArray<RefPtr<SourceSurface>>& aInputImages)
: mDescription(aDescription),
mDT(aDT),
mSources(aSources),
mSourceRegions(aSourceRegions),
mInputImages(aInputImages) {}
const FilterPrimitiveDescription& mDescription;
DrawTarget* mDT;
nsTArray<RefPtr<FilterNode>>& mSources;
nsTArray<IntRect>& mSourceRegions;
nsTArray<RefPtr<SourceSurface>>& mInputImages;
already_AddRefed<FilterNode> operator()(
const EmptyAttributes& aEmptyAttributes) {
return nullptr;
}
already_AddRefed<FilterNode> operator()(const BlendAttributes& aBlend) {
uint32_t mode = aBlend.mBlendMode;
RefPtr<FilterNode> filter;
if (mode == SVG_FEBLEND_MODE_UNKNOWN) {
return nullptr;
}
if (mode == SVG_FEBLEND_MODE_NORMAL) {
filter = mDT->CreateFilter(FilterType::COMPOSITE);
if (!filter) {
return nullptr;
}
filter->SetInput(IN_COMPOSITE_IN_START, mSources[1]);
filter->SetInput(IN_COMPOSITE_IN_START + 1, mSources[0]);
} else {
filter = mDT->CreateFilter(FilterType::BLEND);
if (!filter) {
return nullptr;
}
static const uint8_t blendModes[SVG_FEBLEND_MODE_LUMINOSITY + 1] = {
0,
0,
BLEND_MODE_MULTIPLY,
BLEND_MODE_SCREEN,
BLEND_MODE_DARKEN,
BLEND_MODE_LIGHTEN,
BLEND_MODE_OVERLAY,
BLEND_MODE_COLOR_DODGE,
BLEND_MODE_COLOR_BURN,
BLEND_MODE_HARD_LIGHT,
BLEND_MODE_SOFT_LIGHT,
BLEND_MODE_DIFFERENCE,
BLEND_MODE_EXCLUSION,
BLEND_MODE_HUE,
BLEND_MODE_SATURATION,
BLEND_MODE_COLOR,
BLEND_MODE_LUMINOSITY};
filter->SetAttribute(ATT_BLEND_BLENDMODE, (uint32_t)blendModes[mode]);
// The correct input order for both software and D2D filters is flipped
// from our source order, so flip here.
filter->SetInput(IN_BLEND_IN, mSources[1]);
filter->SetInput(IN_BLEND_IN2, mSources[0]);
}
return filter.forget();
}
already_AddRefed<FilterNode> operator()(
const ColorMatrixAttributes& aMatrixAttributes) {
float colorMatrix[20];
if (!ComputeColorMatrix(aMatrixAttributes, colorMatrix)) {
RefPtr<FilterNode> filter(mSources[0]);
return filter.forget();
}
Matrix5x4 matrix(
colorMatrix[0], colorMatrix[5], colorMatrix[10], colorMatrix[15],
colorMatrix[1], colorMatrix[6], colorMatrix[11], colorMatrix[16],
colorMatrix[2], colorMatrix[7], colorMatrix[12], colorMatrix[17],
colorMatrix[3], colorMatrix[8], colorMatrix[13], colorMatrix[18],
colorMatrix[4], colorMatrix[9], colorMatrix[14], colorMatrix[19]);
RefPtr<FilterNode> filter = mDT->CreateFilter(FilterType::COLOR_MATRIX);
if (!filter) {
return nullptr;
}
filter->SetAttribute(ATT_COLOR_MATRIX_MATRIX, matrix);
filter->SetAttribute(ATT_COLOR_MATRIX_ALPHA_MODE,
(uint32_t)ALPHA_MODE_STRAIGHT);
filter->SetInput(IN_COLOR_MATRIX_IN, mSources[0]);
return filter.forget();
}
already_AddRefed<FilterNode> operator()(
const MorphologyAttributes& aMorphology) {
Size radii = aMorphology.mRadii;
int32_t rx = radii.width;
int32_t ry = radii.height;
// Is one of the radii zero or negative, return the input image
if (rx <= 0 || ry <= 0) {
RefPtr<FilterNode> filter(mSources[0]);
return filter.forget();
}
// Clamp radii to prevent completely insane values:
rx = std::min(rx, kMorphologyMaxRadius);
ry = std::min(ry, kMorphologyMaxRadius);
MorphologyOperator op = aMorphology.mOperator == SVG_OPERATOR_ERODE
? MORPHOLOGY_OPERATOR_ERODE
: MORPHOLOGY_OPERATOR_DILATE;
RefPtr<FilterNode> filter = mDT->CreateFilter(FilterType::MORPHOLOGY);
if (!filter) {
return nullptr;
}
filter->SetAttribute(ATT_MORPHOLOGY_RADII, IntSize(rx, ry));
filter->SetAttribute(ATT_MORPHOLOGY_OPERATOR, (uint32_t)op);
filter->SetInput(IN_MORPHOLOGY_IN, mSources[0]);
return filter.forget();
}
already_AddRefed<FilterNode> operator()(const FloodAttributes& aFlood) {
DeviceColor color = ToDeviceColor(aFlood.mColor);
RefPtr<FilterNode> filter = mDT->CreateFilter(FilterType::FLOOD);
if (!filter) {
return nullptr;
}
filter->SetAttribute(ATT_FLOOD_COLOR, color);
return filter.forget();
}
already_AddRefed<FilterNode> operator()(const TileAttributes& aTile) {
RefPtr<FilterNode> filter = mDT->CreateFilter(FilterType::TILE);
if (!filter) {
return nullptr;
}
filter->SetAttribute(ATT_TILE_SOURCE_RECT, mSourceRegions[0]);
filter->SetInput(IN_TILE_IN, mSources[0]);
return filter.forget();
}
already_AddRefed<FilterNode> operator()(
const ComponentTransferAttributes& aComponentTransfer) {
MOZ_ASSERT(aComponentTransfer.mTypes[0] !=
SVG_FECOMPONENTTRANSFER_SAME_AS_R);
MOZ_ASSERT(aComponentTransfer.mTypes[3] !=
SVG_FECOMPONENTTRANSFER_SAME_AS_R);
RefPtr<FilterNode> filters[4]; // one for each FILTER_*_TRANSFER type
for (int32_t i = 0; i < 4; i++) {
int32_t inputIndex = (aComponentTransfer.mTypes[i] ==
SVG_FECOMPONENTTRANSFER_SAME_AS_R) &&
(i < 3)
? 0
: i;
ConvertComponentTransferFunctionToFilter(aComponentTransfer, inputIndex,
i, mDT, filters[0], filters[1],
filters[2], filters[3]);
}
// Connect all used filters nodes.
RefPtr<FilterNode> lastFilter = mSources[0];
for (int32_t i = 0; i < 4; i++) {
if (filters[i]) {
filters[i]->SetInput(0, lastFilter);
lastFilter = filters[i];
}
}
return lastFilter.forget();
}
already_AddRefed<FilterNode> operator()(const OpacityAttributes& aOpacity) {
RefPtr<FilterNode> filter = mDT->CreateFilter(FilterType::OPACITY);
if (!filter) {
return nullptr;
}
filter->SetAttribute(ATT_OPACITY_VALUE, aOpacity.mOpacity);
filter->SetInput(IN_OPACITY_IN, mSources[0]);
return filter.forget();
}
already_AddRefed<FilterNode> operator()(
const ConvolveMatrixAttributes& aConvolveMatrix) {
RefPtr<FilterNode> filter =
mDT->CreateFilter(FilterType::CONVOLVE_MATRIX);
if (!filter) {
return nullptr;
}
filter->SetAttribute(ATT_CONVOLVE_MATRIX_KERNEL_SIZE,
aConvolveMatrix.mKernelSize);
const nsTArray<float>& matrix = aConvolveMatrix.mKernelMatrix;
filter->SetAttribute(ATT_CONVOLVE_MATRIX_KERNEL_MATRIX, matrix.Elements(),
matrix.Length());
filter->SetAttribute(ATT_CONVOLVE_MATRIX_DIVISOR,
aConvolveMatrix.mDivisor);
filter->SetAttribute(ATT_CONVOLVE_MATRIX_BIAS, aConvolveMatrix.mBias);
filter->SetAttribute(ATT_CONVOLVE_MATRIX_TARGET, aConvolveMatrix.mTarget);
filter->SetAttribute(ATT_CONVOLVE_MATRIX_SOURCE_RECT, mSourceRegions[0]);
uint32_t edgeMode = aConvolveMatrix.mEdgeMode;
static const uint8_t edgeModes[SVG_EDGEMODE_NONE + 1] = {
EDGE_MODE_NONE, // SVG_EDGEMODE_UNKNOWN
EDGE_MODE_DUPLICATE, // SVG_EDGEMODE_DUPLICATE
EDGE_MODE_WRAP, // SVG_EDGEMODE_WRAP
EDGE_MODE_NONE // SVG_EDGEMODE_NONE
};
filter->SetAttribute(ATT_CONVOLVE_MATRIX_EDGE_MODE,
(uint32_t)edgeModes[edgeMode]);
filter->SetAttribute(ATT_CONVOLVE_MATRIX_KERNEL_UNIT_LENGTH,
aConvolveMatrix.mKernelUnitLength);
filter->SetAttribute(ATT_CONVOLVE_MATRIX_PRESERVE_ALPHA,
aConvolveMatrix.mPreserveAlpha);
filter->SetInput(IN_CONVOLVE_MATRIX_IN, mSources[0]);
return filter.forget();
}
already_AddRefed<FilterNode> operator()(const OffsetAttributes& aOffset) {
return FilterWrappers::Offset(mDT, mSources[0], aOffset.mValue);
}
already_AddRefed<FilterNode> operator()(
const DisplacementMapAttributes& aDisplacementMap) {
RefPtr<FilterNode> filter =
mDT->CreateFilter(FilterType::DISPLACEMENT_MAP);
if (!filter) {
return nullptr;
}
filter->SetAttribute(ATT_DISPLACEMENT_MAP_SCALE, aDisplacementMap.mScale);
static const uint8_t channel[SVG_CHANNEL_A + 1] = {
COLOR_CHANNEL_R, // SVG_CHANNEL_UNKNOWN
COLOR_CHANNEL_R, // SVG_CHANNEL_R
COLOR_CHANNEL_G, // SVG_CHANNEL_G
COLOR_CHANNEL_B, // SVG_CHANNEL_B
COLOR_CHANNEL_A // SVG_CHANNEL_A
};
filter->SetAttribute(ATT_DISPLACEMENT_MAP_X_CHANNEL,
(uint32_t)channel[aDisplacementMap.mXChannel]);
filter->SetAttribute(ATT_DISPLACEMENT_MAP_Y_CHANNEL,
(uint32_t)channel[aDisplacementMap.mYChannel]);
filter->SetInput(IN_DISPLACEMENT_MAP_IN, mSources[0]);
filter->SetInput(IN_DISPLACEMENT_MAP_IN2, mSources[1]);
return filter.forget();
}
already_AddRefed<FilterNode> operator()(
const TurbulenceAttributes& aTurbulence) {
RefPtr<FilterNode> filter = mDT->CreateFilter(FilterType::TURBULENCE);
if (!filter) {
return nullptr;
}
filter->SetAttribute(ATT_TURBULENCE_BASE_FREQUENCY,
aTurbulence.mBaseFrequency);
filter->SetAttribute(ATT_TURBULENCE_NUM_OCTAVES, aTurbulence.mOctaves);
filter->SetAttribute(ATT_TURBULENCE_STITCHABLE, aTurbulence.mStitchable);
filter->SetAttribute(ATT_TURBULENCE_SEED, (uint32_t)aTurbulence.mSeed);
static const uint8_t type[SVG_TURBULENCE_TYPE_TURBULENCE + 1] = {
TURBULENCE_TYPE_FRACTAL_NOISE, // SVG_TURBULENCE_TYPE_UNKNOWN
TURBULENCE_TYPE_FRACTAL_NOISE, // SVG_TURBULENCE_TYPE_FRACTALNOISE
TURBULENCE_TYPE_TURBULENCE // SVG_TURBULENCE_TYPE_TURBULENCE
};
filter->SetAttribute(ATT_TURBULENCE_TYPE,
(uint32_t)type[aTurbulence.mType]);
filter->SetAttribute(
ATT_TURBULENCE_RECT,
mDescription.PrimitiveSubregion() - aTurbulence.mOffset);
return FilterWrappers::Offset(mDT, filter, aTurbulence.mOffset);
}
already_AddRefed<FilterNode> operator()(
const CompositeAttributes& aComposite) {
RefPtr<FilterNode> filter;
uint32_t op = aComposite.mOperator;
if (op == SVG_FECOMPOSITE_OPERATOR_ARITHMETIC) {
const nsTArray<float>& coefficients = aComposite.mCoefficients;
static const float allZero[4] = {0, 0, 0, 0};
filter = mDT->CreateFilter(FilterType::ARITHMETIC_COMBINE);
// All-zero coefficients sometimes occur in junk filters.
if (!filter || (coefficients.Length() == std::size(allZero) &&
ArrayEqual(coefficients.Elements(), allZero,
std::size(allZero)))) {
return nullptr;
}
filter->SetAttribute(ATT_ARITHMETIC_COMBINE_COEFFICIENTS,
coefficients.Elements(), coefficients.Length());
filter->SetInput(IN_ARITHMETIC_COMBINE_IN, mSources[0]);
filter->SetInput(IN_ARITHMETIC_COMBINE_IN2, mSources[1]);
} else {
filter = mDT->CreateFilter(FilterType::COMPOSITE);
if (!filter) {
return nullptr;
}
static const uint8_t operators[SVG_FECOMPOSITE_OPERATOR_LIGHTER + 1] = {
COMPOSITE_OPERATOR_OVER, // SVG_FECOMPOSITE_OPERATOR_UNKNOWN
COMPOSITE_OPERATOR_OVER, // SVG_FECOMPOSITE_OPERATOR_OVER
COMPOSITE_OPERATOR_IN, // SVG_FECOMPOSITE_OPERATOR_IN
COMPOSITE_OPERATOR_OUT, // SVG_FECOMPOSITE_OPERATOR_OUT
COMPOSITE_OPERATOR_ATOP, // SVG_FECOMPOSITE_OPERATOR_ATOP
COMPOSITE_OPERATOR_XOR, // SVG_FECOMPOSITE_OPERATOR_XOR
COMPOSITE_OPERATOR_OVER, // Unused, arithmetic is handled above
COMPOSITE_OPERATOR_LIGHTER // SVG_FECOMPOSITE_OPERATOR_LIGHTER
};
filter->SetAttribute(ATT_COMPOSITE_OPERATOR, (uint32_t)operators[op]);
filter->SetInput(IN_COMPOSITE_IN_START, mSources[1]);
filter->SetInput(IN_COMPOSITE_IN_START + 1, mSources[0]);
}
return filter.forget();
}
already_AddRefed<FilterNode> operator()(const MergeAttributes& aMerge) {
if (mSources.Length() == 0) {
return nullptr;
}
if (mSources.Length() == 1) {
RefPtr<FilterNode> filter(mSources[0]);
return filter.forget();
}
RefPtr<FilterNode> filter = mDT->CreateFilter(FilterType::COMPOSITE);
if (!filter) {
return nullptr;
}
filter->SetAttribute(ATT_COMPOSITE_OPERATOR,
(uint32_t)COMPOSITE_OPERATOR_OVER);
for (size_t i = 0; i < mSources.Length(); i++) {
filter->SetInput(IN_COMPOSITE_IN_START + i, mSources[i]);
}
return filter.forget();
}
already_AddRefed<FilterNode> operator()(
const GaussianBlurAttributes& aGaussianBlur) {
return FilterWrappers::GaussianBlur(mDT, mSources[0],
aGaussianBlur.mStdDeviation);
}
already_AddRefed<FilterNode> operator()(
const DropShadowAttributes& aDropShadow) {
RefPtr<FilterNode> alpha = FilterWrappers::ToAlpha(mDT, mSources[0]);
RefPtr<FilterNode> blur =
FilterWrappers::GaussianBlur(mDT, alpha, aDropShadow.mStdDeviation);
RefPtr<FilterNode> offsetBlur = FilterWrappers::Offset(
mDT, blur, IntPoint::Truncate(aDropShadow.mOffset));
RefPtr<FilterNode> flood = mDT->CreateFilter(FilterType::FLOOD);
if (!flood) {
return nullptr;
}
sRGBColor color = aDropShadow.mColor;
if (mDescription.InputColorSpace(0) == ColorSpace::LinearRGB) {
color = sRGBColor(gsRGBToLinearRGBMap[uint8_t(color.r * 255)],
gsRGBToLinearRGBMap[uint8_t(color.g * 255)],
gsRGBToLinearRGBMap[uint8_t(color.b * 255)], color.a);
}
flood->SetAttribute(ATT_FLOOD_COLOR, ToDeviceColor(color));
RefPtr<FilterNode> composite = mDT->CreateFilter(FilterType::COMPOSITE);
if (!composite) {
return nullptr;
}
composite->SetAttribute(ATT_COMPOSITE_OPERATOR,
(uint32_t)COMPOSITE_OPERATOR_IN);
composite->SetInput(IN_COMPOSITE_IN_START, offsetBlur);
composite->SetInput(IN_COMPOSITE_IN_START + 1, flood);
RefPtr<FilterNode> filter = mDT->CreateFilter(FilterType::COMPOSITE);
if (!filter) {
return nullptr;
}
filter->SetAttribute(ATT_COMPOSITE_OPERATOR,
(uint32_t)COMPOSITE_OPERATOR_OVER);
filter->SetInput(IN_COMPOSITE_IN_START, composite);
filter->SetInput(IN_COMPOSITE_IN_START + 1, mSources[0]);
return filter.forget();
}
already_AddRefed<FilterNode> operator()(
const SpecularLightingAttributes& aLighting) {
return operator()(
*(static_cast<const DiffuseLightingAttributes*>(&aLighting)));
}
already_AddRefed<FilterNode> operator()(
const DiffuseLightingAttributes& aLighting) {
bool isSpecular =
mDescription.Attributes().is<SpecularLightingAttributes>();
if (aLighting.mLightType == LightType::None) {
return nullptr;
}
enum { POINT = 0, SPOT, DISTANT } lightType = POINT;
switch (aLighting.mLightType) {
case LightType::Point:
lightType = POINT;
break;
case LightType::Spot:
lightType = SPOT;
break;
case LightType::Distant:
lightType = DISTANT;
break;
default:
break;
}
static const FilterType filterType[2][DISTANT + 1] = {
{FilterType::POINT_DIFFUSE, FilterType::SPOT_DIFFUSE,
FilterType::DISTANT_DIFFUSE},
{FilterType::POINT_SPECULAR, FilterType::SPOT_SPECULAR,
FilterType::DISTANT_SPECULAR}};
RefPtr<FilterNode> filter =
mDT->CreateFilter(filterType[isSpecular][lightType]);
if (!filter) {
return nullptr;
}
filter->SetAttribute(ATT_LIGHTING_COLOR, ToDeviceColor(aLighting.mColor));
filter->SetAttribute(ATT_LIGHTING_SURFACE_SCALE, aLighting.mSurfaceScale);
filter->SetAttribute(ATT_LIGHTING_KERNEL_UNIT_LENGTH,
aLighting.mKernelUnitLength);
if (isSpecular) {
filter->SetAttribute(ATT_SPECULAR_LIGHTING_SPECULAR_CONSTANT,
aLighting.mLightingConstant);
filter->SetAttribute(ATT_SPECULAR_LIGHTING_SPECULAR_EXPONENT,
aLighting.mSpecularExponent);
} else {
filter->SetAttribute(ATT_DIFFUSE_LIGHTING_DIFFUSE_CONSTANT,
aLighting.mLightingConstant);
}
switch (lightType) {
case POINT: {
Point3D position(aLighting.mLightValues[kPointLightPositionXIndex],
aLighting.mLightValues[kPointLightPositionYIndex],
aLighting.mLightValues[kPointLightPositionZIndex]);
filter->SetAttribute(ATT_POINT_LIGHT_POSITION, position);
break;
}
case SPOT: {
Point3D position(aLighting.mLightValues[kSpotLightPositionXIndex],
aLighting.mLightValues[kSpotLightPositionYIndex],
aLighting.mLightValues[kSpotLightPositionZIndex]);
filter->SetAttribute(ATT_SPOT_LIGHT_POSITION, position);
Point3D pointsAt(aLighting.mLightValues[kSpotLightPointsAtXIndex],
aLighting.mLightValues[kSpotLightPointsAtYIndex],
aLighting.mLightValues[kSpotLightPointsAtZIndex]);
filter->SetAttribute(ATT_SPOT_LIGHT_POINTS_AT, pointsAt);
filter->SetAttribute(ATT_SPOT_LIGHT_FOCUS,
aLighting.mLightValues[kSpotLightFocusIndex]);
filter->SetAttribute(
ATT_SPOT_LIGHT_LIMITING_CONE_ANGLE,
aLighting.mLightValues[kSpotLightLimitingConeAngleIndex]);
break;
}
case DISTANT: {
filter->SetAttribute(
ATT_DISTANT_LIGHT_AZIMUTH,
aLighting.mLightValues[kDistantLightAzimuthIndex]);
filter->SetAttribute(
ATT_DISTANT_LIGHT_ELEVATION,
aLighting.mLightValues[kDistantLightElevationIndex]);
break;
}
}
filter->SetInput(IN_LIGHTING_IN, mSources[0]);
return filter.forget();
}
already_AddRefed<FilterNode> operator()(const ImageAttributes& aImage) {
const Matrix& TM = aImage.mTransform;
if (!TM.Determinant()) {
return nullptr;
}
// Pull the image from the additional image list using the index that's
// stored in the primitive description.
RefPtr<SourceSurface> inputImage = mInputImages[aImage.mInputIndex];
RefPtr<FilterNode> transform = mDT->CreateFilter(FilterType::TRANSFORM);
if (!transform) {
return nullptr;
}
transform->SetInput(IN_TRANSFORM_IN, inputImage);
transform->SetAttribute(ATT_TRANSFORM_MATRIX, TM);
transform->SetAttribute(ATT_TRANSFORM_FILTER, aImage.mFilter);
return transform.forget();
}
already_AddRefed<FilterNode> operator()(const ToAlphaAttributes& aToAlpha) {
return FilterWrappers::ToAlpha(mDT, mSources[0]);
}
};
return aDescription.Attributes().match(PrimitiveAttributesMatcher(
aDescription, aDT, aSources, aSourceRegions, aInputImages));
}
template <typename T>
static const T& ElementForIndex(int32_t aIndex,
const nsTArray<T>& aPrimitiveElements,
const T& aSourceGraphicElement,
const T& aFillPaintElement,
const T& aStrokePaintElement) {
switch (aIndex) {
case FilterPrimitiveDescription::kPrimitiveIndexSourceGraphic:
case FilterPrimitiveDescription::kPrimitiveIndexSourceAlpha:
return aSourceGraphicElement;
case FilterPrimitiveDescription::kPrimitiveIndexFillPaint:
return aFillPaintElement;
case FilterPrimitiveDescription::kPrimitiveIndexStrokePaint:
return aStrokePaintElement;
default:
MOZ_ASSERT(aIndex >= 0, "bad index");
return aPrimitiveElements[aIndex];
}
}
static AlphaModel InputAlphaModelForPrimitive(
const FilterPrimitiveDescription& aDescr, int32_t aInputIndex,
AlphaModel aOriginalAlphaModel) {
const PrimitiveAttributes& atts = aDescr.Attributes();
if (atts.is<TileAttributes>() || atts.is<OffsetAttributes>() ||
atts.is<ToAlphaAttributes>()) {
return aOriginalAlphaModel;
}
if (atts.is<ColorMatrixAttributes>() ||
atts.is<ComponentTransferAttributes>()) {
return AlphaModel::Unpremultiplied;
}
if (atts.is<DisplacementMapAttributes>()) {
return aInputIndex == 0 ? AlphaModel::Premultiplied
: AlphaModel::Unpremultiplied;
}
if (atts.is<ConvolveMatrixAttributes>()) {
return atts.as<ConvolveMatrixAttributes>().mPreserveAlpha
? AlphaModel::Unpremultiplied
: AlphaModel::Premultiplied;
}
return AlphaModel::Premultiplied;
}
static AlphaModel OutputAlphaModelForPrimitive(
const FilterPrimitiveDescription& aDescr,
const nsTArray<AlphaModel>& aInputAlphaModels) {
if (aInputAlphaModels.Length()) {
// For filters with inputs, the output is premultiplied if and only if the
// first input is premultiplied.
return InputAlphaModelForPrimitive(aDescr, 0, aInputAlphaModels[0]);
}
// All filters without inputs produce premultiplied alpha.
return AlphaModel::Premultiplied;
}
// Returns the output FilterNode, in premultiplied sRGB space.
already_AddRefed<FilterNode> FilterNodeGraphFromDescription(
DrawTarget* aDT, const FilterDescription& aFilter,
const Rect& aResultNeededRect, FilterNode* aSourceGraphic,
const IntRect& aSourceGraphicRect, FilterNode* aFillPaint,
FilterNode* aStrokePaint,
nsTArray<RefPtr<SourceSurface>>& aAdditionalImages) {
const nsTArray<FilterPrimitiveDescription>& primitives = aFilter.mPrimitives;
MOZ_RELEASE_ASSERT(!primitives.IsEmpty());
RefPtr<FilterCachedColorModels> sourceFilters[4];
nsTArray<RefPtr<FilterCachedColorModels>> primitiveFilters;
for (size_t i = 0; i < primitives.Length(); ++i) {
const FilterPrimitiveDescription& descr = primitives[i];
nsTArray<RefPtr<FilterNode>> inputFilterNodes;
nsTArray<IntRect> inputSourceRects;
nsTArray<AlphaModel> inputAlphaModels;
for (size_t j = 0; j < descr.NumberOfInputs(); j++) {
int32_t inputIndex = descr.InputPrimitiveIndex(j);
if (inputIndex < 0) {
inputSourceRects.AppendElement(descr.FilterSpaceBounds());
} else {
inputSourceRects.AppendElement(
primitives[inputIndex].PrimitiveSubregion());
}
RefPtr<FilterCachedColorModels> inputFilter;
if (inputIndex >= 0) {
MOZ_ASSERT(inputIndex < (int64_t)primitiveFilters.Length(),
"out-of-bounds input index!");
inputFilter = primitiveFilters[inputIndex];
MOZ_ASSERT(
inputFilter,
"Referred to input filter that comes after the current one?");
} else {
int32_t sourceIndex = -inputIndex - 1;
MOZ_ASSERT(sourceIndex >= 0, "invalid source index");
MOZ_ASSERT(sourceIndex < 4, "invalid source index");
inputFilter = sourceFilters[sourceIndex];
if (!inputFilter) {
RefPtr<FilterNode> sourceFilterNode;
nsTArray<FilterNode*> primitiveFilters;
RefPtr<FilterNode> filt =
ElementForIndex(inputIndex, primitiveFilters, aSourceGraphic,
aFillPaint, aStrokePaint);
if (filt) {
sourceFilterNode = filt;
// Clip the original SourceGraphic to the first filter region if the
// surface isn't already sized appropriately.
if ((inputIndex ==
FilterPrimitiveDescription::kPrimitiveIndexSourceGraphic ||
inputIndex ==
FilterPrimitiveDescription::kPrimitiveIndexSourceAlpha) &&
!descr.FilterSpaceBounds().Contains(aSourceGraphicRect)) {
sourceFilterNode = FilterWrappers::Crop(
aDT, sourceFilterNode, descr.FilterSpaceBounds());
}
if (inputIndex ==
FilterPrimitiveDescription::kPrimitiveIndexSourceAlpha) {
sourceFilterNode = FilterWrappers::ToAlpha(aDT, sourceFilterNode);
}
}
inputFilter = new FilterCachedColorModels(aDT, sourceFilterNode,
ColorModel::PremulSRGB());
sourceFilters[sourceIndex] = inputFilter;
}
}
MOZ_ASSERT(inputFilter);
AlphaModel inputAlphaModel = InputAlphaModelForPrimitive(
descr, j, inputFilter->OriginalAlphaModel());
inputAlphaModels.AppendElement(inputAlphaModel);
ColorModel inputColorModel(descr.InputColorSpace(j), inputAlphaModel);
inputFilterNodes.AppendElement(
inputFilter->ForColorModel(inputColorModel));
}
RefPtr<FilterNode> primitiveFilterNode = FilterNodeFromPrimitiveDescription(
descr, aDT, inputFilterNodes, inputSourceRects, aAdditionalImages);
if (primitiveFilterNode) {
primitiveFilterNode = FilterWrappers::Crop(aDT, primitiveFilterNode,
descr.PrimitiveSubregion());
}
ColorModel outputColorModel(
descr.OutputColorSpace(),
OutputAlphaModelForPrimitive(descr, inputAlphaModels));
RefPtr<FilterCachedColorModels> primitiveFilter =
new FilterCachedColorModels(aDT, primitiveFilterNode, outputColorModel);
primitiveFilters.AppendElement(primitiveFilter);
}
MOZ_RELEASE_ASSERT(!primitiveFilters.IsEmpty());
return primitiveFilters.LastElement()->ForColorModel(
ColorModel::PremulSRGB());
}
// FilterSupport
void FilterSupport::RenderFilterDescription(
DrawTarget* aDT, const FilterDescription& aFilter, const Rect& aRenderRect,
SourceSurface* aSourceGraphic, const IntRect& aSourceGraphicRect,
SourceSurface* aFillPaint, const IntRect& aFillPaintRect,
SourceSurface* aStrokePaint, const IntRect& aStrokePaintRect,
nsTArray<RefPtr<SourceSurface>>& aAdditionalImages, const Point& aDestPoint,
const DrawOptions& aOptions) {
RefPtr<FilterNode> sourceGraphic, fillPaint, strokePaint;
if (aSourceGraphic) {
sourceGraphic = FilterWrappers::ForSurface(aDT, aSourceGraphic,
aSourceGraphicRect.TopLeft());
}
if (aFillPaint) {
fillPaint =
FilterWrappers::ForSurface(aDT, aFillPaint, aFillPaintRect.TopLeft());
}
if (aStrokePaint) {
strokePaint = FilterWrappers::ForSurface(aDT, aStrokePaint,
aStrokePaintRect.TopLeft());
}
RefPtr<FilterNode> resultFilter = FilterNodeGraphFromDescription(
aDT, aFilter, aRenderRect, sourceGraphic, aSourceGraphicRect, fillPaint,
strokePaint, aAdditionalImages);
if (!resultFilter) {
gfxWarning() << "Filter is NULL.";
return;
}
aDT->DrawFilter(resultFilter, aRenderRect, aDestPoint, aOptions);
}
static nsIntRegion UnionOfRegions(const nsTArray<nsIntRegion>& aRegions) {
nsIntRegion result;
for (size_t i = 0; i < aRegions.Length(); i++) {
result.Or(result, aRegions[i]);
}
return result;
}
static int32_t InflateSizeForBlurStdDev(float aStdDev) {
double size =
std::min(aStdDev, kMaxStdDeviation) * (3 * sqrt(2 * M_PI) / 4) * 1.5;
return uint32_t(floor(size + 0.5));
}
static nsIntRegion ResultChangeRegionForPrimitive(
const FilterPrimitiveDescription& aDescription,
const nsTArray<nsIntRegion>& aInputChangeRegions) {
struct PrimitiveAttributesMatcher {
PrimitiveAttributesMatcher(const FilterPrimitiveDescription& aDescription,
const nsTArray<nsIntRegion>& aInputChangeRegions)
: mDescription(aDescription),
mInputChangeRegions(aInputChangeRegions) {}
const FilterPrimitiveDescription& mDescription;
const nsTArray<nsIntRegion>& mInputChangeRegions;
nsIntRegion operator()(const EmptyAttributes& aEmptyAttributes) {
return nsIntRegion();
}
nsIntRegion operator()(const BlendAttributes& aBlend) {
return UnionOfRegions(mInputChangeRegions);
}
nsIntRegion operator()(const ColorMatrixAttributes& aColorMatrix) {
return mInputChangeRegions[0];
}
nsIntRegion operator()(const MorphologyAttributes& aMorphology) {
Size radii = aMorphology.mRadii;
int32_t rx =
std::clamp(int32_t(ceil(radii.width)), 0, kMorphologyMaxRadius);
int32_t ry =
std::clamp(int32_t(ceil(radii.height)), 0, kMorphologyMaxRadius);
return mInputChangeRegions[0].Inflated(nsIntMargin(ry, rx, ry, rx));
}
nsIntRegion operator()(const FloodAttributes& aFlood) {
return nsIntRegion();
}
nsIntRegion operator()(const TileAttributes& aTile) {
return mDescription.PrimitiveSubregion();
}
nsIntRegion operator()(
const ComponentTransferAttributes& aComponentTransfer) {
return mInputChangeRegions[0];
}
nsIntRegion operator()(const OpacityAttributes& aOpacity) {
return UnionOfRegions(mInputChangeRegions);
}
nsIntRegion operator()(const ConvolveMatrixAttributes& aConvolveMatrix) {
if (aConvolveMatrix.mEdgeMode != EDGE_MODE_NONE) {
return mDescription.PrimitiveSubregion();
}
Size kernelUnitLength = aConvolveMatrix.mKernelUnitLength;
IntSize kernelSize = aConvolveMatrix.mKernelSize;
IntPoint target = aConvolveMatrix.mTarget;
nsIntMargin m(
static_cast<int32_t>(ceil(kernelUnitLength.width * (target.x))),
static_cast<int32_t>(ceil(kernelUnitLength.height * (target.y))),
static_cast<int32_t>(
ceil(kernelUnitLength.width * (kernelSize.width - target.x - 1))),
static_cast<int32_t>(ceil(kernelUnitLength.height *
(kernelSize.height - target.y - 1))));
return mInputChangeRegions[0].Inflated(m);
}
nsIntRegion operator()(const OffsetAttributes& aOffset) {
IntPoint offset = aOffset.mValue;
return mInputChangeRegions[0].MovedBy(offset.x, offset.y);
}
nsIntRegion operator()(const DisplacementMapAttributes& aDisplacementMap) {
int32_t scale = ceil(std::abs(aDisplacementMap.mScale));
return mInputChangeRegions[0].Inflated(
nsIntMargin(scale, scale, scale, scale));
}
nsIntRegion operator()(const TurbulenceAttributes& aTurbulence) {
return nsIntRegion();
}
nsIntRegion operator()(const CompositeAttributes& aComposite) {
return UnionOfRegions(mInputChangeRegions);
}
nsIntRegion operator()(const MergeAttributes& aMerge) {
return UnionOfRegions(mInputChangeRegions);
}
nsIntRegion operator()(const GaussianBlurAttributes& aGaussianBlur) {
const Size& stdDeviation = aGaussianBlur.mStdDeviation;
int32_t dx = InflateSizeForBlurStdDev(stdDeviation.width);
int32_t dy = InflateSizeForBlurStdDev(stdDeviation.height);
return mInputChangeRegions[0].Inflated(nsIntMargin(dy, dx, dy, dx));
}
nsIntRegion operator()(const DropShadowAttributes& aDropShadow) {
IntPoint offset = IntPoint::Truncate(aDropShadow.mOffset);
nsIntRegion offsetRegion =
mInputChangeRegions[0].MovedBy(offset.x, offset.y);
Size stdDeviation = aDropShadow.mStdDeviation;
int32_t dx = InflateSizeForBlurStdDev(stdDeviation.width);
int32_t dy = InflateSizeForBlurStdDev(stdDeviation.height);
nsIntRegion blurRegion =
offsetRegion.Inflated(nsIntMargin(dy, dx, dy, dx));
blurRegion.Or(blurRegion, mInputChangeRegions[0]);
return blurRegion;
}
nsIntRegion operator()(const SpecularLightingAttributes& aLighting) {
return operator()(
*(static_cast<const DiffuseLightingAttributes*>(&aLighting)));
}
nsIntRegion operator()(const DiffuseLightingAttributes& aLighting) {
Size kernelUnitLength = aLighting.mKernelUnitLength;
int32_t dx = ceil(kernelUnitLength.width);
int32_t dy = ceil(kernelUnitLength.height);
return mInputChangeRegions[0].Inflated(nsIntMargin(dy, dx, dy, dx));
}
nsIntRegion operator()(const ImageAttributes& aImage) {
return nsIntRegion();
}
nsIntRegion operator()(const ToAlphaAttributes& aToAlpha) {
return mInputChangeRegions[0];
}
};
return aDescription.Attributes().match(
PrimitiveAttributesMatcher(aDescription, aInputChangeRegions));
}
/* static */
nsIntRegion FilterSupport::ComputeResultChangeRegion(
const FilterDescription& aFilter, const nsIntRegion& aSourceGraphicChange,
const nsIntRegion& aFillPaintChange,
const nsIntRegion& aStrokePaintChange) {
const nsTArray<FilterPrimitiveDescription>& primitives = aFilter.mPrimitives;
MOZ_RELEASE_ASSERT(!primitives.IsEmpty());
nsTArray<nsIntRegion> resultChangeRegions;
for (int32_t i = 0; i < int32_t(primitives.Length()); ++i) {
const FilterPrimitiveDescription& descr = primitives[i];
nsTArray<nsIntRegion> inputChangeRegions;
for (size_t j = 0; j < descr.NumberOfInputs(); j++) {
int32_t inputIndex = descr.InputPrimitiveIndex(j);
MOZ_ASSERT(inputIndex < i, "bad input index");
nsIntRegion inputChangeRegion =
ElementForIndex(inputIndex, resultChangeRegions, aSourceGraphicChange,
aFillPaintChange, aStrokePaintChange);
inputChangeRegions.AppendElement(inputChangeRegion);
}
nsIntRegion changeRegion =
ResultChangeRegionForPrimitive(descr, inputChangeRegions);
changeRegion.And(changeRegion, descr.PrimitiveSubregion());
resultChangeRegions.AppendElement(changeRegion);
}
MOZ_RELEASE_ASSERT(!resultChangeRegions.IsEmpty());
return resultChangeRegions[resultChangeRegions.Length() - 1];
}
static float ResultOfZeroUnderTransferFunction(
const ComponentTransferAttributes& aFunctionAttributes, int32_t channel) {
switch (aFunctionAttributes.mTypes[channel]) {
case SVG_FECOMPONENTTRANSFER_TYPE_TABLE: {
const nsTArray<float>& tableValues = aFunctionAttributes.mValues[channel];
if (tableValues.Length() < 2) {
return 0.0f;
}
return tableValues[0];
}
case SVG_FECOMPONENTTRANSFER_TYPE_DISCRETE: {
const nsTArray<float>& tableValues = aFunctionAttributes.mValues[channel];
if (tableValues.Length() < 1) {
return 0.0f;
}
return tableValues[0];
}
case SVG_FECOMPONENTTRANSFER_TYPE_LINEAR: {
const nsTArray<float>& values = aFunctionAttributes.mValues[channel];
return values[kComponentTransferInterceptIndex];
}
case SVG_FECOMPONENTTRANSFER_TYPE_GAMMA: {
const nsTArray<float>& values = aFunctionAttributes.mValues[channel];
return values[kComponentTransferOffsetIndex];
}
case SVG_FECOMPONENTTRANSFER_TYPE_IDENTITY:
default:
return 0.0f;
}
}
nsIntRegion FilterSupport::PostFilterExtentsForPrimitive(
const FilterPrimitiveDescription& aDescription,
const nsTArray<nsIntRegion>& aInputExtents) {
struct PrimitiveAttributesMatcher {
PrimitiveAttributesMatcher(const FilterPrimitiveDescription& aDescription,
const nsTArray<nsIntRegion>& aInputExtents)
: mDescription(aDescription), mInputExtents(aInputExtents) {}
const FilterPrimitiveDescription& mDescription;
const nsTArray<nsIntRegion>& mInputExtents;
nsIntRegion operator()(const EmptyAttributes& aEmptyAttributes) {
return IntRect();
}
nsIntRegion operator()(const BlendAttributes& aBlend) {
return ResultChangeRegionForPrimitive(mDescription, mInputExtents);
}
nsIntRegion operator()(const ColorMatrixAttributes& aColorMatrix) {
if (aColorMatrix.mType == (uint32_t)SVG_FECOLORMATRIX_TYPE_MATRIX) {
const nsTArray<float>& values = aColorMatrix.mValues;
if (values.Length() == 20 && values[19] > 0.0f) {
return mDescription.PrimitiveSubregion();
}
}
return mInputExtents[0];
}
nsIntRegion operator()(const MorphologyAttributes& aMorphology) {
uint32_t op = aMorphology.mOperator;
if (op == SVG_OPERATOR_ERODE) {
return mInputExtents[0];
}
Size radii = aMorphology.mRadii;
int32_t rx =
std::clamp(int32_t(ceil(radii.width)), 0, kMorphologyMaxRadius);
int32_t ry =
std::clamp(int32_t(ceil(radii.height)), 0, kMorphologyMaxRadius);
return mInputExtents[0].Inflated(nsIntMargin(ry, rx, ry, rx));
}
nsIntRegion operator()(const FloodAttributes& aFlood) {
if (aFlood.mColor.a == 0.0f) {
return IntRect();
}
return mDescription.PrimitiveSubregion();
}
nsIntRegion operator()(const TileAttributes& aTile) {
return ResultChangeRegionForPrimitive(mDescription, mInputExtents);
}
nsIntRegion operator()(
const ComponentTransferAttributes& aComponentTransfer) {
if (ResultOfZeroUnderTransferFunction(aComponentTransfer, kChannelA) >
0.0f) {
return mDescription.PrimitiveSubregion();
}
return mInputExtents[0];
}
nsIntRegion operator()(const OpacityAttributes& aOpacity) {
return ResultChangeRegionForPrimitive(mDescription, mInputExtents);
}
nsIntRegion operator()(const ConvolveMatrixAttributes& aConvolveMatrix) {
return ResultChangeRegionForPrimitive(mDescription, mInputExtents);
}
nsIntRegion operator()(const OffsetAttributes& aOffset) {
return ResultChangeRegionForPrimitive(mDescription, mInputExtents);
}
nsIntRegion operator()(const DisplacementMapAttributes& aDisplacementMap) {
return ResultChangeRegionForPrimitive(mDescription, mInputExtents);
}
nsIntRegion operator()(const TurbulenceAttributes& aTurbulence) {
return mDescription.PrimitiveSubregion();
}
nsIntRegion operator()(const CompositeAttributes& aComposite) {
uint32_t op = aComposite.mOperator;
if (op == SVG_FECOMPOSITE_OPERATOR_ARITHMETIC) {
// The arithmetic composite primitive can draw outside the bounding
// box of its source images.
const nsTArray<float>& coefficients = aComposite.mCoefficients;
MOZ_ASSERT(coefficients.Length() == 4);
// The calculation is:
// r = c[0] * in[0] * in[1] + c[1] * in[0] + c[2] * in[1] + c[3]
nsIntRegion region;
if (coefficients[0] > 0.0f) {
region = mInputExtents[0].Intersect(mInputExtents[1]);
}
if (coefficients[1] > 0.0f) {
region.Or(region, mInputExtents[0]);
}
if (coefficients[2] > 0.0f) {
region.Or(region, mInputExtents[1]);
}
if (coefficients[3] > 0.0f) {
region = mDescription.PrimitiveSubregion();
}
return region;
}
if (op == SVG_FECOMPOSITE_OPERATOR_IN) {
return mInputExtents[0].Intersect(mInputExtents[1]);
}
return ResultChangeRegionForPrimitive(mDescription, mInputExtents);
}
nsIntRegion operator()(const MergeAttributes& aMerge) {
return ResultChangeRegionForPrimitive(mDescription, mInputExtents);
}
nsIntRegion operator()(const GaussianBlurAttributes& aGaussianBlur) {
return ResultChangeRegionForPrimitive(mDescription, mInputExtents);
}
nsIntRegion operator()(const DropShadowAttributes& aDropShadow) {
return ResultChangeRegionForPrimitive(mDescription, mInputExtents);
}
nsIntRegion operator()(const DiffuseLightingAttributes& aDiffuseLighting) {
return mDescription.PrimitiveSubregion();
}
nsIntRegion operator()(
const SpecularLightingAttributes& aSpecularLighting) {
return mDescription.PrimitiveSubregion();
}
nsIntRegion operator()(const ImageAttributes& aImage) {
return mDescription.PrimitiveSubregion();
}
nsIntRegion operator()(const ToAlphaAttributes& aToAlpha) {
return ResultChangeRegionForPrimitive(mDescription, mInputExtents);
}
};
return aDescription.Attributes().match(
PrimitiveAttributesMatcher(aDescription, aInputExtents));
}
/* static */
nsIntRegion FilterSupport::ComputePostFilterExtents(
const FilterDescription& aFilter,
const nsIntRegion& aSourceGraphicExtents) {
const nsTArray<FilterPrimitiveDescription>& primitives = aFilter.mPrimitives;
MOZ_RELEASE_ASSERT(!primitives.IsEmpty());
nsTArray<nsIntRegion> postFilterExtents;
for (int32_t i = 0; i < int32_t(primitives.Length()); ++i) {
const FilterPrimitiveDescription& descr = primitives[i];
nsIntRegion filterSpace = descr.FilterSpaceBounds();
nsTArray<nsIntRegion> inputExtents;
for (size_t j = 0; j < descr.NumberOfInputs(); j++) {
int32_t inputIndex = descr.InputPrimitiveIndex(j);
MOZ_ASSERT(inputIndex < i, "bad input index");
nsIntRegion inputExtent =
ElementForIndex(inputIndex, postFilterExtents, aSourceGraphicExtents,
filterSpace, filterSpace);
inputExtents.AppendElement(inputExtent);
}
nsIntRegion extent = PostFilterExtentsForPrimitive(descr, inputExtents);
extent.And(extent, descr.PrimitiveSubregion());
postFilterExtents.AppendElement(extent);
}
MOZ_RELEASE_ASSERT(!postFilterExtents.IsEmpty());
return postFilterExtents[postFilterExtents.Length() - 1];
}
static nsIntRegion SourceNeededRegionForPrimitive(
const FilterPrimitiveDescription& aDescription,
const nsIntRegion& aResultNeededRegion, int32_t aInputIndex) {
struct PrimitiveAttributesMatcher {
PrimitiveAttributesMatcher(const FilterPrimitiveDescription& aDescription,
const nsIntRegion& aResultNeededRegion,
int32_t aInputIndex)
: mDescription(aDescription),
mResultNeededRegion(aResultNeededRegion),
mInputIndex(aInputIndex) {}
const FilterPrimitiveDescription& mDescription;
const nsIntRegion& mResultNeededRegion;
const int32_t mInputIndex;
nsIntRegion operator()(const EmptyAttributes& aEmptyAttributes) {
return nsIntRegion();
}
nsIntRegion operator()(const BlendAttributes& aBlend) {
return mResultNeededRegion;
}
nsIntRegion operator()(const ColorMatrixAttributes& aColorMatrix) {
return mResultNeededRegion;
}
nsIntRegion operator()(const MorphologyAttributes& aMorphology) {
Size radii = aMorphology.mRadii;
int32_t rx =
std::clamp(int32_t(ceil(radii.width)), 0, kMorphologyMaxRadius);
int32_t ry =
std::clamp(int32_t(ceil(radii.height)), 0, kMorphologyMaxRadius);
return mResultNeededRegion.Inflated(nsIntMargin(ry, rx, ry, rx));
}
nsIntRegion operator()(const FloodAttributes& aFlood) {
MOZ_CRASH("GFX: this shouldn't be called for filters without inputs");
return nsIntRegion();
}
nsIntRegion operator()(const TileAttributes& aTile) {
return IntRect(INT32_MIN / 2, INT32_MIN / 2, INT32_MAX, INT32_MAX);
}
nsIntRegion operator()(
const ComponentTransferAttributes& aComponentTransfer) {
return mResultNeededRegion;
}
nsIntRegion operator()(const OpacityAttributes& aOpacity) {
return mResultNeededRegion;
}
nsIntRegion operator()(const ConvolveMatrixAttributes& aConvolveMatrix) {
Size kernelUnitLength = aConvolveMatrix.mKernelUnitLength;
IntSize kernelSize = aConvolveMatrix.mKernelSize;
IntPoint target = aConvolveMatrix.mTarget;
nsIntMargin m(
static_cast<int32_t>(
ceil(kernelUnitLength.width * (kernelSize.width - target.x - 1))),
static_cast<int32_t>(ceil(kernelUnitLength.height *
(kernelSize.height - target.y - 1))),
static_cast<int32_t>(ceil(kernelUnitLength.width * (target.x))),
static_cast<int32_t>(ceil(kernelUnitLength.height * (target.y))));
return mResultNeededRegion.Inflated(m);
}
nsIntRegion operator()(const OffsetAttributes& aOffset) {
IntPoint offset = aOffset.mValue;
return mResultNeededRegion.MovedBy(-nsIntPoint(offset.x, offset.y));
}
nsIntRegion operator()(const DisplacementMapAttributes& aDisplacementMap) {
if (mInputIndex == 1) {
return mResultNeededRegion;
}
int32_t scale = ceil(std::abs(aDisplacementMap.mScale));
return mResultNeededRegion.Inflated(
nsIntMargin(scale, scale, scale, scale));
}
nsIntRegion operator()(const TurbulenceAttributes& aTurbulence) {
MOZ_CRASH("GFX: this shouldn't be called for filters without inputs");
return nsIntRegion();
}
nsIntRegion operator()(const CompositeAttributes& aComposite) {
return mResultNeededRegion;
}
nsIntRegion operator()(const MergeAttributes& aMerge) {
return mResultNeededRegion;
}
nsIntRegion operator()(const GaussianBlurAttributes& aGaussianBlur) {
const Size& stdDeviation = aGaussianBlur.mStdDeviation;
int32_t dx = InflateSizeForBlurStdDev(stdDeviation.width);
int32_t dy = InflateSizeForBlurStdDev(stdDeviation.height);
return mResultNeededRegion.Inflated(nsIntMargin(dy, dx, dy, dx));
}
nsIntRegion operator()(const DropShadowAttributes& aDropShadow) {
IntPoint offset = IntPoint::Truncate(aDropShadow.mOffset);
nsIntRegion offsetRegion =
mResultNeededRegion.MovedBy(-nsIntPoint(offset.x, offset.y));
Size stdDeviation = aDropShadow.mStdDeviation;
int32_t dx = InflateSizeForBlurStdDev(stdDeviation.width);
int32_t dy = InflateSizeForBlurStdDev(stdDeviation.height);
nsIntRegion blurRegion =
offsetRegion.Inflated(nsIntMargin(dy, dx, dy, dx));
blurRegion.Or(blurRegion, mResultNeededRegion);
return blurRegion;
}
nsIntRegion operator()(const SpecularLightingAttributes& aLighting) {
return operator()(
*(static_cast<const DiffuseLightingAttributes*>(&aLighting)));
}
nsIntRegion operator()(const DiffuseLightingAttributes& aLighting) {
Size kernelUnitLength = aLighting.mKernelUnitLength;
int32_t dx = ceil(kernelUnitLength.width);
int32_t dy = ceil(kernelUnitLength.height);
return mResultNeededRegion.Inflated(nsIntMargin(dy, dx, dy, dx));
}
nsIntRegion operator()(const ImageAttributes& aImage) {
MOZ_CRASH("GFX: this shouldn't be called for filters without inputs");
return nsIntRegion();
}
nsIntRegion operator()(const ToAlphaAttributes& aToAlpha) {
return mResultNeededRegion;
}
};
return aDescription.Attributes().match(PrimitiveAttributesMatcher(
aDescription, aResultNeededRegion, aInputIndex));
}
/* static */
void FilterSupport::ComputeSourceNeededRegions(
const FilterDescription& aFilter, const nsIntRegion& aResultNeededRegion,
nsIntRegion& aSourceGraphicNeededRegion,
nsIntRegion& aFillPaintNeededRegion,
nsIntRegion& aStrokePaintNeededRegion) {
const nsTArray<FilterPrimitiveDescription>& primitives = aFilter.mPrimitives;
MOZ_ASSERT(!primitives.IsEmpty());
if (primitives.IsEmpty()) {
return;
}
nsTArray<nsIntRegion> primitiveNeededRegions;
primitiveNeededRegions.AppendElements(primitives.Length());
primitiveNeededRegions[primitives.Length() - 1] = aResultNeededRegion;
for (int32_t i = primitives.Length() - 1; i >= 0; --i) {
const FilterPrimitiveDescription& descr = primitives[i];
nsIntRegion neededRegion = primitiveNeededRegions[i];
neededRegion.And(neededRegion, descr.PrimitiveSubregion());
for (size_t j = 0; j < descr.NumberOfInputs(); j++) {
int32_t inputIndex = descr.InputPrimitiveIndex(j);
MOZ_ASSERT(inputIndex < i, "bad input index");
nsIntRegion* inputNeededRegion =
const_cast<nsIntRegion*>(&ElementForIndex(
inputIndex, primitiveNeededRegions, aSourceGraphicNeededRegion,
aFillPaintNeededRegion, aStrokePaintNeededRegion));
inputNeededRegion->Or(*inputNeededRegion, SourceNeededRegionForPrimitive(
descr, neededRegion, j));
}
}
// Clip original SourceGraphic to first filter region.
const FilterPrimitiveDescription& firstDescr = primitives[0];
aSourceGraphicNeededRegion.And(aSourceGraphicNeededRegion,
firstDescr.FilterSpaceBounds());
}
// FilterPrimitiveDescription
FilterPrimitiveDescription::FilterPrimitiveDescription()
: mAttributes(EmptyAttributes()),
mOutputColorSpace(ColorSpace::SRGB),
mIsTainted(false) {}
FilterPrimitiveDescription::FilterPrimitiveDescription(
PrimitiveAttributes&& aAttributes)
: mAttributes(std::move(aAttributes)),
mOutputColorSpace(ColorSpace::SRGB),
mIsTainted(false) {}
bool FilterPrimitiveDescription::operator==(
const FilterPrimitiveDescription& aOther) const {
return mFilterPrimitiveSubregion.IsEqualInterior(
aOther.mFilterPrimitiveSubregion) &&
mFilterSpaceBounds.IsEqualInterior(aOther.mFilterSpaceBounds) &&
mOutputColorSpace == aOther.mOutputColorSpace &&
mIsTainted == aOther.mIsTainted &&
mInputPrimitives == aOther.mInputPrimitives &&
mInputColorSpaces == aOther.mInputColorSpaces &&
mAttributes == aOther.mAttributes;
}
// FilterDescription
bool FilterDescription::operator==(const FilterDescription& aOther) const {
return mPrimitives == aOther.mPrimitives;
}
} // namespace gfx
} // namespace mozilla