new file mode 100644
@@ -0,0 +1,296 @@
+From 0d3344e17d258106617b0e6d783d073b188a2548 Mon Sep 17 00:00:00 2001
+From: Adrian Perez de Castro <aperez@igalia.com>
+Date: Thu, 2 Jun 2022 11:19:06 +0300
+Subject: [PATCH] [ARM][NEON] FELightningNEON.cpp fails to build, NEON fast
+ path seems unused https://bugs.webkit.org/show_bug.cgi?id=241182
+
+Reviewed by NOBODY (OOPS!).
+
+Move the NEON fast path for the SVG lighting filter effects into
+FELightingSoftwareApplier, and arrange to actually use them by
+forwarding calls to applyPlatformGeneric() into applyPlatformNeon().
+
+Some changes were needed to adapt platformApplyNeon() to the current
+state of filters after r286140. This was not detected because the code
+bitrotted due to it being guarded with CPU(ARM_TRADITIONAL), which does
+not get used much these days: CPU(ARM_THUMB2) is more common. It should
+be possible to use the NEON fast paths also in Thumb mode, but that is
+left for a follow-up fix.
+
+* Source/WebCore/platform/graphics/cpu/arm/filters/FELightingNEON.cpp:
+(WebCore::FELightingSoftwareApplier::platformApplyNeonWorker):
+(WebCore::FELightingSoftwareApplier::getPowerCoefficients):
+(WebCore::FELighting::platformApplyNeonWorker): Deleted.
+(WebCore::FELighting::getPowerCoefficients): Deleted.
+* Source/WebCore/platform/graphics/cpu/arm/filters/FELightingNEON.h:
+(WebCore::FELightingSoftwareApplier::applyPlatformNeon):
+(WebCore::FELighting::platformApplyNeon): Deleted.
+* Source/WebCore/platform/graphics/filters/DistantLightSource.h:
+* Source/WebCore/platform/graphics/filters/FELighting.h:
+* Source/WebCore/platform/graphics/filters/PointLightSource.h:
+* Source/WebCore/platform/graphics/filters/SpotLightSource.h:
+* Source/WebCore/platform/graphics/filters/software/FELightingSoftwareApplier.h:
+---
+Upstream-Status: Submitted [https://github.com/WebKit/WebKit/pull/1233]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+
+ .../cpu/arm/filters/FELightingNEON.cpp | 4 +-
+ .../graphics/cpu/arm/filters/FELightingNEON.h | 54 +++++++++----------
+ .../graphics/filters/DistantLightSource.h | 4 ++
+ .../platform/graphics/filters/FELighting.h | 7 ---
+ .../graphics/filters/PointLightSource.h | 4 ++
+ .../graphics/filters/SpotLightSource.h | 4 ++
+ .../software/FELightingSoftwareApplier.h | 16 ++++++
+ 7 files changed, 57 insertions(+), 36 deletions(-)
+
+--- a/Source/WebCore/platform/graphics/cpu/arm/filters/FELightingNEON.cpp
++++ b/Source/WebCore/platform/graphics/cpu/arm/filters/FELightingNEON.cpp
+@@ -49,7 +49,7 @@ short* feLightingConstantsForNeon()
+ return s_FELightingConstantsForNeon;
+ }
+
+-void FELighting::platformApplyNeonWorker(FELightingPaintingDataForNeon* parameters)
++void FELightingSoftwareApplier::platformApplyNeonWorker(FELightingPaintingDataForNeon* parameters)
+ {
+ neonDrawLighting(parameters);
+ }
+@@ -464,7 +464,7 @@ TOSTRING(neonDrawLighting) ":" NL
+ "b .lightStrengthCalculated" NL
+ ); // NOLINT
+
+-int FELighting::getPowerCoefficients(float exponent)
++int FELightingSoftwareApplier::getPowerCoefficients(float exponent)
+ {
+ // Calling a powf function from the assembly code would require to save
+ // and reload a lot of NEON registers. Since the base is in range [0..1]
+--- a/Source/WebCore/platform/graphics/cpu/arm/filters/FELightingNEON.h
++++ b/Source/WebCore/platform/graphics/cpu/arm/filters/FELightingNEON.h
+@@ -24,14 +24,15 @@
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+-#ifndef FELightingNEON_h
+-#define FELightingNEON_h
++#pragma once
+
+ #if CPU(ARM_NEON) && CPU(ARM_TRADITIONAL) && COMPILER(GCC_COMPATIBLE)
+
+-#include "FELighting.h"
++#include "FELightingSoftwareApplier.h"
++#include "ImageBuffer.h"
+ #include "PointLightSource.h"
+ #include "SpotLightSource.h"
++#include <wtf/ObjectIdentifier.h>
+ #include <wtf/ParallelJobs.h>
+
+ namespace WebCore {
+@@ -93,14 +94,14 @@ extern "C" {
+ void neonDrawLighting(FELightingPaintingDataForNeon*);
+ }
+
+-inline void FELighting::platformApplyNeon(const LightingData& data, const LightSource::PaintingData& paintingData)
++inline void FELightingSoftwareApplier::applyPlatformNeon(const FELightingSoftwareApplier::LightingData& data, const LightSource::PaintingData& paintingData)
+ {
+- alignas(16) FELightingFloatArgumentsForNeon floatArguments;
+- FELightingPaintingDataForNeon neonData = {
++ WebCore::FELightingFloatArgumentsForNeon alignas(16) floatArguments;
++ WebCore::FELightingPaintingDataForNeon neonData = {
+ data.pixels->data(),
+ 1,
+- data.widthDecreasedByOne - 1,
+- data.heightDecreasedByOne - 1,
++ data.width - 2,
++ data.height - 2,
+ 0,
+ 0,
+ 0,
+@@ -111,23 +112,23 @@ inline void FELighting::platformApplyNeo
+ // Set light source arguments.
+ floatArguments.constOne = 1;
+
+- auto color = m_lightingColor.toColorTypeLossy<SRGBA<uint8_t>>().resolved();
++ auto color = data.lightingColor.toColorTypeLossy<SRGBA<uint8_t>>().resolved();
+
+ floatArguments.colorRed = color.red;
+ floatArguments.colorGreen = color.green;
+ floatArguments.colorBlue = color.blue;
+ floatArguments.padding4 = 0;
+
+- if (m_lightSource->type() == LS_POINT) {
++ if (data.lightSource->type() == LS_POINT) {
+ neonData.flags |= FLAG_POINT_LIGHT;
+- PointLightSource& pointLightSource = static_cast<PointLightSource&>(m_lightSource.get());
++ const auto& pointLightSource = *static_cast<const PointLightSource*>(data.lightSource);
+ floatArguments.lightX = pointLightSource.position().x();
+ floatArguments.lightY = pointLightSource.position().y();
+ floatArguments.lightZ = pointLightSource.position().z();
+ floatArguments.padding2 = 0;
+- } else if (m_lightSource->type() == LS_SPOT) {
++ } else if (data.lightSource->type() == LS_SPOT) {
+ neonData.flags |= FLAG_SPOT_LIGHT;
+- SpotLightSource& spotLightSource = static_cast<SpotLightSource&>(m_lightSource.get());
++ const auto& spotLightSource = *static_cast<const SpotLightSource*>(data.lightSource);
+ floatArguments.lightX = spotLightSource.position().x();
+ floatArguments.lightY = spotLightSource.position().y();
+ floatArguments.lightZ = spotLightSource.position().z();
+@@ -145,7 +146,7 @@ inline void FELighting::platformApplyNeo
+ if (spotLightSource.specularExponent() == 1)
+ neonData.flags |= FLAG_CONE_EXPONENT_IS_1;
+ } else {
+- ASSERT(m_lightSource->type() == LS_DISTANT);
++ ASSERT(data.lightSource->type() == LS_DISTANT);
+ floatArguments.lightX = paintingData.initialLightingData.lightVector.x();
+ floatArguments.lightY = paintingData.initialLightingData.lightVector.y();
+ floatArguments.lightZ = paintingData.initialLightingData.lightVector.z();
+@@ -155,38 +156,39 @@ inline void FELighting::platformApplyNeo
+ // Set lighting arguments.
+ floatArguments.surfaceScale = data.surfaceScale;
+ floatArguments.minusSurfaceScaleDividedByFour = -data.surfaceScale / 4;
+- if (m_lightingType == FELighting::DiffuseLighting)
+- floatArguments.diffuseConstant = m_diffuseConstant;
++ if (data.filterType == FilterEffect::Type::FEDiffuseLighting)
++ floatArguments.diffuseConstant = data.diffuseConstant;
+ else {
+ neonData.flags |= FLAG_SPECULAR_LIGHT;
+- floatArguments.diffuseConstant = m_specularConstant;
+- neonData.specularExponent = getPowerCoefficients(m_specularExponent);
+- if (m_specularExponent == 1)
++ floatArguments.diffuseConstant = data.specularConstant;
++ neonData.specularExponent = getPowerCoefficients(data.specularExponent);
++ if (data.specularExponent == 1)
+ neonData.flags |= FLAG_SPECULAR_EXPONENT_IS_1;
+ }
+ if (floatArguments.diffuseConstant == 1)
+ neonData.flags |= FLAG_DIFFUSE_CONST_IS_1;
+
+- int optimalThreadNumber = ((data.widthDecreasedByOne - 1) * (data.heightDecreasedByOne - 1)) / s_minimalRectDimension;
++ static constexpr int minimalRectDimension = 100 * 100; // Empirical data limit for parallel jobs
++ int optimalThreadNumber = ((data.width - 2) * (data.height - 2)) / minimalRectDimension;
+ if (optimalThreadNumber > 1) {
+ // Initialize parallel jobs
+- ParallelJobs<FELightingPaintingDataForNeon> parallelJobs(&WebCore::FELighting::platformApplyNeonWorker, optimalThreadNumber);
++ ParallelJobs<FELightingPaintingDataForNeon> parallelJobs(&FELightingSoftwareApplier::platformApplyNeonWorker, optimalThreadNumber);
+
+ // Fill the parameter array
+ int job = parallelJobs.numberOfJobs();
+ if (job > 1) {
+ int yStart = 1;
+- int yStep = (data.heightDecreasedByOne - 1) / job;
++ int yStep = (data.height - 2) / job;
+ for (--job; job >= 0; --job) {
+ FELightingPaintingDataForNeon& params = parallelJobs.parameter(job);
+ params = neonData;
+ params.yStart = yStart;
+- params.pixels += (yStart - 1) * (data.widthDecreasedByOne + 1) * 4;
++ params.pixels += (yStart - 1) * data.width * 4;
+ if (job > 0) {
+ params.absoluteHeight = yStep;
+ yStart += yStep;
+ } else
+- params.absoluteHeight = data.heightDecreasedByOne - yStart;
++ params.absoluteHeight = (data.height - 1) - yStart;
+ }
+ parallelJobs.execute();
+ return;
+@@ -199,5 +201,3 @@ inline void FELighting::platformApplyNeo
+ } // namespace WebCore
+
+ #endif // CPU(ARM_NEON) && COMPILER(GCC_COMPATIBLE)
+-
+-#endif // FELightingNEON_h
+--- a/Source/WebCore/platform/graphics/filters/DistantLightSource.h
++++ b/Source/WebCore/platform/graphics/filters/DistantLightSource.h
+@@ -25,6 +25,10 @@
+ #include "LightSource.h"
+ #include <wtf/Ref.h>
+
++namespace WTF {
++class TextStream;
++} // namespace WTF
++
+ namespace WebCore {
+
+ class DistantLightSource : public LightSource {
+--- a/Source/WebCore/platform/graphics/filters/FELighting.h
++++ b/Source/WebCore/platform/graphics/filters/FELighting.h
+@@ -35,8 +35,6 @@
+
+ namespace WebCore {
+
+-struct FELightingPaintingDataForNeon;
+-
+ class FELighting : public FilterEffect {
+ public:
+ const Color& lightingColor() const { return m_lightingColor; }
+@@ -67,11 +65,6 @@ protected:
+
+ std::unique_ptr<FilterEffectApplier> createSoftwareApplier() const override;
+
+-#if CPU(ARM_NEON) && CPU(ARM_TRADITIONAL) && COMPILER(GCC_COMPATIBLE)
+- static int getPowerCoefficients(float exponent);
+- inline void platformApplyNeon(const LightingData&, const LightSource::PaintingData&);
+-#endif
+-
+ Color m_lightingColor;
+ float m_surfaceScale;
+ float m_diffuseConstant;
+--- a/Source/WebCore/platform/graphics/filters/PointLightSource.h
++++ b/Source/WebCore/platform/graphics/filters/PointLightSource.h
+@@ -26,6 +26,10 @@
+ #include "LightSource.h"
+ #include <wtf/Ref.h>
+
++namespace WTF {
++class TextStream;
++} // namespace WTF
++
+ namespace WebCore {
+
+ class PointLightSource : public LightSource {
+--- a/Source/WebCore/platform/graphics/filters/SpotLightSource.h
++++ b/Source/WebCore/platform/graphics/filters/SpotLightSource.h
+@@ -26,6 +26,10 @@
+ #include "LightSource.h"
+ #include <wtf/Ref.h>
+
++namespace WTF {
++class TextStream;
++} // namespace WTF
++
+ namespace WebCore {
+
+ class SpotLightSource : public LightSource {
+--- a/Source/WebCore/platform/graphics/filters/software/FELightingSoftwareApplier.h
++++ b/Source/WebCore/platform/graphics/filters/software/FELightingSoftwareApplier.h
+@@ -36,6 +36,7 @@
+ namespace WebCore {
+
+ class FELighting;
++struct FELightingPaintingDataForNeon;
+
+ class FELightingSoftwareApplier final : public FilterEffectConcreteApplier<FELighting> {
+ WTF_MAKE_FAST_ALLOCATED;
+@@ -132,8 +133,23 @@ private:
+
+ static void applyPlatformGenericPaint(const LightingData&, const LightSource::PaintingData&, int startY, int endY);
+ static void applyPlatformGenericWorker(ApplyParameters*);
++
++#if CPU(ARM_NEON) && CPU(ARM_TRADITIONAL) && COMPILER(GCC_COMPATIBLE)
++ static int getPowerCoefficients(float exponent);
++ static void platformApplyNeonWorker(FELightingPaintingDataForNeon*);
++ inline static void applyPlatformNeon(const LightingData&, const LightSource::PaintingData&);
++
++ inline static void applyPlatformGeneric(const LightingData& data, const LightSource::PaintingData& paintingData)
++ {
++ applyPlatformNeon(data, paintingData);
++ }
++#else
+ static void applyPlatformGeneric(const LightingData&, const LightSource::PaintingData&);
++#endif
++
+ static void applyPlatform(const LightingData&);
+ };
+
+ } // namespace WebCore
++
++#include "FELightingNEON.h"
@@ -25,6 +25,7 @@ SRC_URI = "https://www.webkitgtk.org/releases/${BP}.tar.xz \
file://CVE-2022-48503.patch \
file://CVE-2023-32439.patch \
file://CVE-2024-40779.patch \
+ file://0d3344e17d258106617b0e6d783d073b188a2548.patch \
"
SRC_URI[sha256sum] = "0ad9fb6bf28308fe3889faf184bd179d13ac1b46835d2136edbab2c133d00437"