forked from pool/MozillaFirefox
c460d1e56f
* mozilla-bmo1504834-part2.patch * mozilla-bmo1504834-part3.patch * mozilla-bmo1512162.patch OBS-URL: https://build.opensuse.org/package/show/mozilla:Factory/MozillaFirefox?expand=0&rev=766
113 lines
4.2 KiB
Diff
113 lines
4.2 KiB
Diff
# HG changeset patch
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# Parent 6fa4b62427433e8f445d05c557e5db096667d880
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Skia does not support big endian. The places to fix are too numerous and upstream (skia, not Mozilla)
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has no interest in maintaining big endian.
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So here we try to swizzle the input for skia, so that skia always works on LE, and when it comes
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out again, we transform back to BE.
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diff --git a/gfx/2d/ConvolutionFilter.cpp b/gfx/2d/ConvolutionFilter.cpp
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--- a/gfx/2d/ConvolutionFilter.cpp
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+++ b/gfx/2d/ConvolutionFilter.cpp
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@@ -30,32 +30,79 @@ bool ConvolutionFilter::GetFilterOffsetA
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int32_t* aResultLength) {
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if (aRowIndex >= mFilter->numValues()) {
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return false;
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}
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mFilter->FilterForValue(aRowIndex, aResultOffset, aResultLength);
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return true;
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}
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+static void ByteSwapArray(uint8_t *u8Array, int32_t size) {
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+ uint32_t *array = reinterpret_cast<uint32_t*>(u8Array);
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+ for (int pxl = 0; pxl < size; ++pxl) {
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+ // Use an endian swap to move the bytes, i.e. BGRA -> ARGB.
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+ uint32_t rgba = array[pxl];
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+ array[pxl] = NativeEndian::swapToLittleEndian(rgba);
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+ }
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+}
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+
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void ConvolutionFilter::ConvolveHorizontally(const uint8_t* aSrc, uint8_t* aDst,
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bool aHasAlpha) {
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+#if MOZ_BIG_ENDIAN
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+ int outputSize = mFilter->numValues();
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+
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+ // Input size isn't handed in, so we have to calculate it quickly
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+ int inputSize = 0;
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+ for (int xx = 0; xx < outputSize; ++xx) {
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+ // Get the filter that determines the current output pixel.
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+ int filterOffset, filterLength;
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+ mFilter->FilterForValue(xx, &filterOffset, &filterLength);
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+ inputSize = std::max(inputSize, filterOffset + filterLength);
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+ }
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+
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+ ByteSwapArray((uint8_t*)aSrc, inputSize);
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+#endif
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+
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SkOpts::convolve_horizontally(aSrc, *mFilter, aDst, aHasAlpha);
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+
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+#if MOZ_BIG_ENDIAN
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+ ByteSwapArray((uint8_t*)aSrc, inputSize);
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+ ByteSwapArray(aDst, outputSize);
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+#endif
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}
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void ConvolutionFilter::ConvolveVertically(uint8_t* const* aSrc, uint8_t* aDst,
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int32_t aRowIndex, int32_t aRowSize,
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bool aHasAlpha) {
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MOZ_ASSERT(aRowIndex < mFilter->numValues());
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int32_t filterOffset;
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int32_t filterLength;
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auto filterValues =
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mFilter->FilterForValue(aRowIndex, &filterOffset, &filterLength);
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+
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+#if MOZ_BIG_ENDIAN
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+ for (int filterY = 0; filterY < filterLength; filterY++) {
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+ // Skia only knows LE, so we have to swizzle the input
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+ ByteSwapArray(aSrc[filterY], aRowSize);
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+ }
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+#endif
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+
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SkOpts::convolve_vertically(filterValues, filterLength, aSrc, aRowSize, aDst,
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aHasAlpha);
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+
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+#if MOZ_BIG_ENDIAN
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+ // After skia is finished, we swizzle back to BE, in case
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+ // the input is used again somewhere else
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+ for (int filterY = 0; filterY < filterLength; filterY++) {
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+ ByteSwapArray(aSrc[filterY], aRowSize);
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+ }
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+ // The destination array as well
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+ ByteSwapArray(aDst, aRowSize);
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+#endif
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}
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/* ConvolutionFilter::ComputeResizeFactor is derived from Skia's
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* SkBitmapScaler/SkResizeFilter::computeFactors. It is governed by Skia's
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* BSD-style license (see gfx/skia/LICENSE) and the following copyright:
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* Copyright (c) 2015 Google Inc.
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*/
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bool ConvolutionFilter::ComputeResizeFilter(ResizeMethod aResizeMethod,
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diff --git a/gfx/skia/skia/include/core/SkPreConfig.h b/gfx/skia/skia/include/core/SkPreConfig.h
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--- a/gfx/skia/skia/include/core/SkPreConfig.h
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+++ b/gfx/skia/skia/include/core/SkPreConfig.h
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@@ -68,17 +68,17 @@
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#define SK_CPU_BENDIAN
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#elif defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
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#define SK_CPU_LENDIAN
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#elif defined(__sparc) || defined(__sparc__) || \
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defined(_POWER) || defined(__powerpc__) || \
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defined(__ppc__) || defined(__hppa) || \
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defined(__PPC__) || defined(__PPC64__) || \
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defined(_MIPSEB) || defined(__ARMEB__) || \
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- defined(__s390__) || \
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+ defined(__s390__) || defined(__s390x__) || \
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(defined(__sh__) && defined(__BIG_ENDIAN__)) || \
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(defined(__ia64) && defined(__BIG_ENDIAN__))
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#define SK_CPU_BENDIAN
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#else
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#define SK_CPU_LENDIAN
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#endif
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#endif
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