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-rw-r--r--vcl/qa/cppunit/graphicfilter/filters-webp-test.cxx12
-rw-r--r--vcl/source/filter/webp/reader.cxx4
2 files changed, 8 insertions, 8 deletions
diff --git a/vcl/qa/cppunit/graphicfilter/filters-webp-test.cxx b/vcl/qa/cppunit/graphicfilter/filters-webp-test.cxx
index d3c43f48191f..cbc23315ca30 100644
--- a/vcl/qa/cppunit/graphicfilter/filters-webp-test.cxx
+++ b/vcl/qa/cppunit/graphicfilter/filters-webp-test.cxx
@@ -141,10 +141,10 @@ void WebpFilterTest::testRoundtrip(bool lossy)
}
AlphaMask tmpAlpha = aResultBitmap.GetAlphaMask();
BitmapScopedReadAccess pAccessAlpha(tmpAlpha);
- CPPUNIT_ASSERT_EQUAL(sal_uInt8(0), pAccessAlpha->GetPixelIndex(0, 0));
- CPPUNIT_ASSERT_EQUAL(sal_uInt8(0), pAccessAlpha->GetPixelIndex(0, 19));
- CPPUNIT_ASSERT_EQUAL(sal_uInt8(0), pAccessAlpha->GetPixelIndex(19, 0));
- CPPUNIT_ASSERT_EQUAL(sal_uInt8(64), pAccessAlpha->GetPixelIndex(19, 19));
+ CPPUNIT_ASSERT_EQUAL(sal_uInt8(255), pAccessAlpha->GetPixelIndex(0, 0));
+ CPPUNIT_ASSERT_EQUAL(sal_uInt8(255), pAccessAlpha->GetPixelIndex(0, 19));
+ CPPUNIT_ASSERT_EQUAL(sal_uInt8(255), pAccessAlpha->GetPixelIndex(19, 0));
+ CPPUNIT_ASSERT_EQUAL(sal_uInt8(191), pAccessAlpha->GetPixelIndex(19, 19));
}
aStream.Seek(STREAM_SEEK_TO_BEGIN);
@@ -192,8 +192,8 @@ void WebpFilterTest::testRead(std::u16string_view rName, bool lossy, bool alpha)
{
AlphaMask tmpAlpha = aResultBitmap.GetAlphaMask();
BitmapScopedReadAccess pAccessAlpha(tmpAlpha);
- CPPUNIT_ASSERT_EQUAL(sal_uInt8(0), pAccessAlpha->GetPixelIndex(0, 0));
- CPPUNIT_ASSERT_EQUAL(sal_uInt8(255), pAccessAlpha->GetPixelIndex(0, 9));
+ CPPUNIT_ASSERT_EQUAL(sal_uInt8(255), pAccessAlpha->GetPixelIndex(0, 0));
+ CPPUNIT_ASSERT_EQUAL(sal_uInt8(0), pAccessAlpha->GetPixelIndex(0, 9));
}
}
}
diff --git a/vcl/source/filter/webp/reader.cxx b/vcl/source/filter/webp/reader.cxx
index 61af0d3c0241..a5ff3aaca916 100644
--- a/vcl/source/filter/webp/reader.cxx
+++ b/vcl/source/filter/webp/reader.cxx
@@ -241,7 +241,7 @@ static bool readWebp(SvStream& stream, Graphic& graphic)
for (tools::Long x = 0; x < access->Width(); ++x)
{
memcpy(dstB, src, 3);
- *dstA = 255 - *(src + 3);
+ *dstA = *(src + 3);
src += 4;
dstB += 3;
dstA += 1;
@@ -273,7 +273,7 @@ static bool readWebp(SvStream& stream, Graphic& graphic)
for (tools::Long x = 0; x < accessAlpha->Width(); ++x)
{
sal_uInt8 a = src[3];
- accessAlpha->SetPixelIndex(y, x, 255 - a);
+ accessAlpha->SetPixelIndex(y, x, a);
src += 4;
}
}