diff options
| -rw-r--r-- | src/gui/image/qimage_conversions.cpp | 32 |
1 files changed, 29 insertions, 3 deletions
diff --git a/src/gui/image/qimage_conversions.cpp b/src/gui/image/qimage_conversions.cpp index 02f32aa34b..8e0e53c58d 100644 --- a/src/gui/image/qimage_conversions.cpp +++ b/src/gui/image/qimage_conversions.cpp @@ -375,7 +375,32 @@ static void convert_RGB888_to_RGB(QImageData *dest, const QImageData *src, Qt::I } } +#ifdef __SSE2__ extern bool convert_ARGB_to_ARGB_PM_inplace_sse2(QImageData *data, Qt::ImageConversionFlags); +#else +static bool convert_ARGB_to_ARGB_PM_inplace(QImageData *data,Qt::ImageConversionFlags) +{ + Q_ASSERT(data->format == QImage::Format_ARGB32 || data->format == QImage::Format_RGBA8888); + + const int pad = (data->bytes_per_line >> 2) - data->width; + QRgb *rgb_data = (QRgb *) data->data; + + for (int i = 0; i < data->height; ++i) { + const QRgb *end = rgb_data + data->width; + while (rgb_data < end) { + *rgb_data = qPremultiply(*rgb_data); + ++rgb_data; + } + rgb_data += pad; + } + + if (data->format == QImage::Format_ARGB32) + data->format = QImage::Format_ARGB32_Premultiplied; + else + data->format = QImage::Format_RGBA8888_Premultiplied; + return true; +} +#endif static void convert_ARGB_to_RGBx(QImageData *dest, const QImageData *src, Qt::ImageConversionFlags) { @@ -2592,7 +2617,7 @@ InPlace_Image_Converter qimage_inplace_converter_map[QImage::NImageFormats][QIma #ifdef __SSE2__ convert_ARGB_to_ARGB_PM_inplace_sse2, #else - 0, + convert_ARGB_to_ARGB_PM_inplace, #endif 0, 0, @@ -2705,12 +2730,13 @@ InPlace_Image_Converter qimage_inplace_converter_map[QImage::NImageFormats][QIma 0, 0, mask_alpha_converter_rgbx_inplace, -#if Q_BYTE_ORDER == Q_LITTLE_ENDIAN && __SSE2__ 0, +#ifdef __SSE2__ convert_ARGB_to_ARGB_PM_inplace_sse2, +#elif Q_BYTE_ORDER == Q_LITTLE_ENDIAN + convert_ARGB_to_ARGB_PM_inplace, #else 0, - 0, #endif 0, 0, 0, 0, 0, 0 }, // Format_RGBA8888 |