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Qt: Use RGB32 format for covers/background

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As per QPainter documentation, ARGB32 etc is not optimal.

https://doc.qt.io/qt-6/qpainter.html#performance
This commit is contained in:
Stenzek
2025-09-08 21:54:57 +10:00
parent ec6a411bdf
commit dfc650410e
1 changed files with 5 additions and 1 deletions
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6
src/duckstation-qt/gamelistwidget.cpp
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@@ -69,6 +69,10 @@ static constexpr int MEMORY_CARD_ICON_PADDING = 12;
static void resizeAndPadImage(QImage* image, int expected_width, int expected_height, bool fill_with_top_left)
{
// Get source image in RGB32 format for QPainter.
if (image->format() != QImage::Format_RGB32)
*image = image->convertToFormat(QImage::Format_RGB32);
const qreal dpr = image->devicePixelRatio();
const int dpr_expected_width = static_cast<int>(static_cast<qreal>(expected_width) * dpr);
const int dpr_expected_height = static_cast<int>(static_cast<qreal>(expected_height) * dpr);
@@ -98,7 +102,7 @@ static void resizeAndPadImage(QImage* image, int expected_width, int expected_he
if (image_height < dpr_expected_height)
yoffs = static_cast<int>(static_cast<qreal>((dpr_expected_height - image_height) / 2) / dpr);
QImage padded_image(dpr_expected_width, dpr_expected_height, QImage::Format_ARGB32);
QImage padded_image(dpr_expected_width, dpr_expected_height, QImage::Format_RGB32);
padded_image.setDevicePixelRatio(dpr);
if (fill_with_top_left)
padded_image.fill(image->pixel(0, 0));