From fc2ec95587c431b1916ec5590b7ef634be96c985 Mon Sep 17 00:00:00 2001 From: Allan Sandfeld Jensen Date: Tue, 20 Nov 2018 10:04:28 +0100 Subject: Add Grayscale16 Image Format [ChangeLog][QtGui][QImage] Added support for 16-bit grayscale format. Together-with: Aaron Linville Task-number: QTBUG-41176 Change-Id: I5fe4f54a55ebe1413aa71b882c19627fe22362ac Reviewed-by: Nick D'Ademo Reviewed-by: Lars Knoll --- src/gui/painting/qdrawhelper.cpp | 89 ++++++++++++++++++++++++++++++++++++++-- 1 file changed, 86 insertions(+), 3 deletions(-) (limited to 'src/gui/painting/qdrawhelper.cpp') diff --git a/src/gui/painting/qdrawhelper.cpp b/src/gui/painting/qdrawhelper.cpp index 9ef210cc68..af9375fcec 100644 --- a/src/gui/painting/qdrawhelper.cpp +++ b/src/gui/painting/qdrawhelper.cpp @@ -857,6 +857,44 @@ static const QRgba64 *QT_FASTCALL fetchGrayscale8ToRGB64(QRgba64 *buffer, const return buffer; } +static void QT_FASTCALL convertGrayscale16ToRGB32(uint *buffer, int count, const QVector *) +{ + for (int i = 0; i < count; ++i) { + const uint x = qt_div_257(buffer[i]); + buffer[i] = qRgb(x, x, x); + } +} + +static const uint *QT_FASTCALL fetchGrayscale16ToRGB32(uint *buffer, const uchar *src, int index, int count, + const QVector *, QDitherInfo *) +{ + const unsigned short *s = reinterpret_cast(src) + index; + for (int i = 0; i < count; ++i) { + const uint x = qt_div_257(s[i]); + buffer[i] = qRgb(x, x, x); + } + return buffer; +} + +static const QRgba64 *QT_FASTCALL convertGrayscale16ToRGBA64(QRgba64 *buffer, const uint *src, int count, + const QVector *, QDitherInfo *) +{ + const unsigned short *s = reinterpret_cast(src); + for (int i = 0; i < count; ++i) + buffer[i] = QRgba64::fromRgba64(s[i], s[i], s[i], 65535); + return buffer; +} + +static const QRgba64 *QT_FASTCALL fetchGrayscale16ToRGBA64(QRgba64 *buffer, const uchar *src, int index, int count, + const QVector *, QDitherInfo *) +{ + const unsigned short *s = reinterpret_cast(src) + index; + for (int i = 0; i < count; ++i) { + buffer[i] = QRgba64::fromRgba64(s[i], s[i], s[i], 65535); + } + return buffer; +} + static void QT_FASTCALL storeARGB32FromARGB32PM(uchar *dest, const uint *src, int index, int count, const QVector *, QDitherInfo *) { @@ -1362,6 +1400,22 @@ static void QT_FASTCALL storeGrayscale8FromARGB32PM(uchar *dest, const uint *src dest[index + i] = qGray(qUnpremultiply(src[i])); } +static void QT_FASTCALL storeGrayscale16FromRGB32(uchar *dest, const uint *src, int index, int count, + const QVector *, QDitherInfo *) +{ + unsigned short *d = reinterpret_cast(dest) + index; + for (int i = 0; i < count; ++i) + d[i] = qGray(src[i]) * 257; +} + +static void QT_FASTCALL storeGrayscale16FromARGB32PM(uchar *dest, const uint *src, int index, int count, + const QVector *, QDitherInfo *) +{ + unsigned short *d = reinterpret_cast(dest) + index; + for (int i = 0; i < count; ++i) + d[i] = qGray(qUnpremultiply(src[i])) * 257; +} + static const uint *QT_FASTCALL fetchRGB64ToRGB32(uint *buffer, const uchar *src, int index, int count, const QVector *, QDitherInfo *) { @@ -1488,7 +1542,11 @@ QPixelLayout qPixelLayouts[QImage::NImageFormats] = { { true, true, QPixelLayout::BPP64, nullptr, convertPassThrough, nullptr, fetchRGB64ToRGB32, fetchPassThrough64, - storeRGB64FromRGB32, storeRGB64FromRGB32 } // Format_RGBA64_Premultiplied + storeRGB64FromRGB32, storeRGB64FromRGB32 }, // Format_RGBA64_Premultiplied + { false, false, QPixelLayout::BPP16, nullptr, + convertGrayscale16ToRGB32, convertGrayscale16ToRGBA64, + fetchGrayscale16ToRGB32, fetchGrayscale16ToRGBA64, + storeGrayscale16FromARGB32PM, storeGrayscale16FromRGB32 } // Format_Grayscale16 }; Q_STATIC_ASSERT(sizeof(qPixelLayouts) / sizeof(*qPixelLayouts) == QImage::NImageFormats); @@ -1564,6 +1622,16 @@ static void QT_FASTCALL storeRGBA64PMFromRGBA64PM(uchar *dest, const QRgba64 *sr memcpy(d, src, count * sizeof(QRgba64)); } +static void QT_FASTCALL storeGray16FromRGBA64PM(uchar *dest, const QRgba64 *src, int index, int count, + const QVector *, QDitherInfo *) +{ + quint16 *d = reinterpret_cast(dest) + index; + for (int i = 0; i < count; ++i) { + QRgba64 s = src[i].unpremultiplied(); + d[i] = qGray(s.red(), s.green(), s.blue()); + } +} + ConvertAndStorePixelsFunc64 qStoreFromRGBA64PM[QImage::NImageFormats] = { nullptr, nullptr, @@ -1592,7 +1660,8 @@ ConvertAndStorePixelsFunc64 qStoreFromRGBA64PM[QImage::NImageFormats] = { storeGenericFromRGBA64PM, storeRGBX64FromRGBA64PM, storeRGBA64FromRGBA64PM, - storeRGBA64PMFromRGBA64PM + storeRGBA64PMFromRGBA64PM, + storeGray16FromRGBA64PM }; /* @@ -1696,6 +1765,7 @@ static DestFetchProc destFetchProc[QImage::NImageFormats] = destFetch, // Format_RGBX64 destFetch, // Format_RGBA64 destFetch, // Format_RGBA64_Premultiplied + destFetch, // Format_Grayscale16 }; static DestFetchProc64 destFetchProc64[QImage::NImageFormats] = @@ -1728,6 +1798,7 @@ static DestFetchProc64 destFetchProc64[QImage::NImageFormats] = destFetchRGB64, // Format_RGBX64 destFetch64, // Format_RGBA64 destFetchRGB64, // Format_RGBA64_Premultiplied + destFetch64, // Format_Grayscale16 }; /* @@ -1881,6 +1952,7 @@ static DestStoreProc destStoreProc[QImage::NImageFormats] = destStore, // Format_RGBX64 destStore, // Format_RGBA64 destStore, // Format_RGBA64_Premultiplied + destStore, // Format_Grayscale16 }; static DestStoreProc64 destStoreProc64[QImage::NImageFormats] = @@ -1912,7 +1984,8 @@ static DestStoreProc64 destStoreProc64[QImage::NImageFormats] = destStore64, // Format_Grayscale8 0, // Format_RGBX64 destStore64RGBA64, // Format_RGBA64 - 0 // Format_RGBA64_Premultiplied + 0, // Format_RGBA64_Premultiplied + destStore64, // Format_Grayscale16 }; /* @@ -3839,6 +3912,7 @@ static SourceFetchProc sourceFetchUntransformed[QImage::NImageFormats] = { fetchUntransformed, // RGBX64 fetchUntransformed, // RGBA64 fetchUntransformed, // RGBA64_Premultiplied + fetchUntransformed, // Grayscale16 }; static const SourceFetchProc sourceFetchGeneric[NBlendTypes] = { @@ -5253,6 +5327,7 @@ void qBlendTexture(int count, const QSpan *spans, void *userData) case QImage::Format_RGBX64: case QImage::Format_RGBA64: case QImage::Format_RGBA64_Premultiplied: + case QImage::Format_Grayscale16: proc = processTextureSpansGeneric64[blendType]; break; case QImage::Format_Invalid: @@ -6259,6 +6334,14 @@ DrawHelper qDrawHelper[QImage::NImageFormats] = qt_alphargbblit_generic, qt_rectfill_quint64 }, + // Format_Grayscale16 + { + blend_color_generic_rgb64, + 0, + qt_alphamapblit_generic, + qt_alphargbblit_generic, + qt_rectfill_quint16 + }, }; #if !defined(__SSE2__) -- cgit v1.2.3