1 files changed, 80 insertions, 1 deletions

diff --git a/src/gui/painting/qpaintengine_raster.cpp b/src/gui/painting/qpaintengine_raster.cpp
index 9c86172753..8fc2dbab1a 100644
--- a/src/gui/painting/qpaintengine_raster.cpp
+++ b/src/gui/painting/qpaintengine_raster.cpp
@@ -4814,6 +4814,84 @@ void QGradientCache::generateGradientColorTable(const QGradient& gradient, uint
 
     bool colorInterpolation = (gradient.interpolationMode() == QGradient::ColorInterpolation);
 
+    if (stopCount == 2) {
+        uint first_color = ARGB_COMBINE_ALPHA(stops[0].second.rgba(), opacity);
+        uint second_color = ARGB_COMBINE_ALPHA(stops[1].second.rgba(), opacity);
+
+        qreal first_stop = stops[0].first;
+        qreal second_stop = stops[1].first;
+
+        if (second_stop < first_stop) {
+            qSwap(first_color, second_color);
+            qSwap(first_stop, second_stop);
+        }
+
+        if (colorInterpolation) {
+            first_color = PREMUL(first_color);
+            second_color = PREMUL(second_color);
+        }
+
+        int first_index = qRound(first_stop * (GRADIENT_STOPTABLE_SIZE-1));
+        int second_index = qRound(second_stop * (GRADIENT_STOPTABLE_SIZE-1));
+
+        uint red_first = qRed(first_color) << 16;
+        uint green_first = qGreen(first_color) << 16;
+        uint blue_first = qBlue(first_color) << 16;
+        uint alpha_first = qAlpha(first_color) << 16;
+
+        uint red_second = qRed(second_color) << 16;
+        uint green_second = qGreen(second_color) << 16;
+        uint blue_second = qBlue(second_color) << 16;
+        uint alpha_second = qAlpha(second_color) << 16;
+
+        int i = 0;
+        for (; i <= qMin(GRADIENT_STOPTABLE_SIZE, first_index); ++i) {
+            if (colorInterpolation)
+                colorTable[i] = first_color;
+            else
+                colorTable[i] = PREMUL(first_color);
+        }
+
+        if (i < second_index) {
+            qreal reciprocal = qreal(1) / (second_index - first_index);
+
+            int red_delta = qRound(int(red_second - red_first) * reciprocal);
+            int green_delta = qRound(int(green_second - green_first) * reciprocal);
+            int blue_delta = qRound(int(blue_second - blue_first) * reciprocal);
+            int alpha_delta = qRound(int(alpha_second - alpha_first) * reciprocal);
+
+            // rounding
+            red_first += 1 << 15;
+            green_first += 1 << 15;
+            blue_first += 1 << 15;
+            alpha_first += 1 << 15;
+
+            for (; i < qMin(GRADIENT_STOPTABLE_SIZE, second_index); ++i) {
+                red_first += red_delta;
+                green_first += green_delta;
+                blue_first += blue_delta;
+                alpha_first += alpha_delta;
+
+                const uint color = ((alpha_first << 8) & 0xff000000) | (red_first & 0xff0000)
+                                 | ((green_first >> 8) & 0xff00) | (blue_first >> 16);
+
+                if (colorInterpolation)
+                    colorTable[i] = color;
+                else
+                    colorTable[i] = PREMUL(color);
+            }
+        }
+
+        for (; i < GRADIENT_STOPTABLE_SIZE; ++i) {
+            if (colorInterpolation)
+                colorTable[i] = second_color;
+            else
+                colorTable[i] = PREMUL(second_color);
+        }
+
+        return;
+    }
+
     uint current_color = ARGB_COMBINE_ALPHA(stops[0].second.rgba(), opacity);
     if (stopCount == 1) {
         current_color = PREMUL(current_color);
@@ -4982,10 +5060,11 @@ void QSpanData::setup(const QBrush &brush, int alpha, QPainter::CompositionMode
             QPointF center = g->center();
             radialData.center.x = center.x();
             radialData.center.y = center.y();
+            radialData.center.radius = g->centerRadius();
             QPointF focal = g->focalPoint();
             radialData.focal.x = focal.x();
             radialData.focal.y = focal.y();
-            radialData.radius = g->radius();
+            radialData.focal.radius = g->focalRadius();
         }
         break;