From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Fri, 19 Apr 2024 02:47:55 +0200
Subject: Adding upstream version 124.0.1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 gfx/thebes/gfxAlphaRecovery.cpp | 60 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 gfx/thebes/gfxAlphaRecovery.cpp

(limited to 'gfx/thebes/gfxAlphaRecovery.cpp')

diff --git a/gfx/thebes/gfxAlphaRecovery.cpp b/gfx/thebes/gfxAlphaRecovery.cpp
new file mode 100644
index 0000000000..de36b84b22
--- /dev/null
+++ b/gfx/thebes/gfxAlphaRecovery.cpp
@@ -0,0 +1,60 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * 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
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "gfxAlphaRecovery.h"
+
+#include "gfxImageSurface.h"
+
+#define MOZILLA_SSE_INCLUDE_HEADER_FOR_SSE2
+#include "mozilla/SSE.h"
+
+#include <xsimd/xsimd.hpp>
+
+/* static */
+bool gfxAlphaRecovery::RecoverAlpha(gfxImageSurface* blackSurf,
+                                    const gfxImageSurface* whiteSurf) {
+  mozilla::gfx::IntSize size = blackSurf->GetSize();
+
+  if (size != whiteSurf->GetSize() ||
+      (blackSurf->Format() != mozilla::gfx::SurfaceFormat::A8R8G8B8_UINT32 &&
+       blackSurf->Format() != mozilla::gfx::SurfaceFormat::X8R8G8B8_UINT32) ||
+      (whiteSurf->Format() != mozilla::gfx::SurfaceFormat::A8R8G8B8_UINT32 &&
+       whiteSurf->Format() != mozilla::gfx::SurfaceFormat::X8R8G8B8_UINT32))
+    return false;
+
+#ifdef MOZILLA_MAY_SUPPORT_SSE2
+  if (mozilla::supports_sse2() &&
+      RecoverAlphaGeneric<xsimd::sse2>(blackSurf, whiteSurf)) {
+    return true;
+  }
+#endif
+#ifdef MOZILLA_MAY_SUPPORT_NEON
+  if (mozilla::supports_neon() &&
+      RecoverAlphaGeneric<xsimd::neon>(blackSurf, whiteSurf)) {
+    return true;
+  }
+#endif
+
+  blackSurf->Flush();
+  whiteSurf->Flush();
+
+  unsigned char* blackData = blackSurf->Data();
+  unsigned char* whiteData = whiteSurf->Data();
+
+  for (int32_t i = 0; i < size.height; ++i) {
+    uint32_t* blackPixel = reinterpret_cast<uint32_t*>(blackData);
+    const uint32_t* whitePixel = reinterpret_cast<uint32_t*>(whiteData);
+    for (int32_t j = 0; j < size.width; ++j) {
+      uint32_t recovered = RecoverPixel(blackPixel[j], whitePixel[j]);
+      blackPixel[j] = recovered;
+    }
+    blackData += blackSurf->Stride();
+    whiteData += whiteSurf->Stride();
+  }
+
+  blackSurf->MarkDirty();
+
+  return true;
+}
-- 
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