jfjoch_viewer: Use RGB32 format, which gives still a small improvement in coloring time

2026-01-29 23:49:42 +01:00
parent 03808b447a
commit cb5f678757
1 changed files with 4 additions and 5 deletions
@@ -14,6 +14,7 @@
 #include <QGuiApplication>
 #include <QMimeData>
 #include <QBuffer>
+#include <QElapsedTimer>
 #include <QPainter>

 JFJochImage::JFJochImage(QWidget *parent) : QGraphicsView(parent) {
@@ -578,7 +579,7 @@ void JFJochImage::Redraw() {
 }

 void JFJochImage::GeneratePixmap() {
-    QImage qimg(int(W), int(H), QImage::Format_RGB888);
+    QImage qimg(int(W), int(H), QImage::Format_RGB32);
    image_rgb.resize(W * H);

    // Bad pixel color
@@ -604,7 +605,7 @@ void JFJochImage::GeneratePixmap() {

    rgb gap_color = color_scale.Apply(ColorScaleSpecial::Gap);
    for (int y = 0; y < H; ++y) {
-        uchar *scanLine = qimg.scanLine(y);
+        QRgb *scanLine = reinterpret_cast<QRgb*>(qimg.scanLine(y));
        const float *row = &image_fp[y * W];
        rgb *out = &image_rgb[y * W];

@@ -626,9 +627,7 @@ void JFJochImage::GeneratePixmap() {
            }

            out[x] = c;
-            scanLine[x * 3 + 0] = c.r;
-            scanLine[x * 3 + 1] = c.g;
-            scanLine[x * 3 + 2] = c.b;
+            scanLine[x] = qRgb(c.r, c.g, c.b);
        }
    }