path: root/src
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authorAllan Sandfeld Jensen <>2018-08-02 18:15:33 +0200
committerAllan Sandfeld Jensen <>2018-09-14 16:57:02 +0000
commit1511bfef52b0731e1fdeafd685bf4954024da0e9 (patch)
tree0c2d501b14c85b03cac94e309da20285534a9752 /src
parent6af8b5e791a1bd07d6a477c0a80694dc08eae367 (diff)
Disable RGB64 backend for ARGB32 when it will be very slow
Fixes a speed regression on ARGB32 painting on low end hardware introduced when it was switched to using the RGB64 raster routines. It turns out several of our embedded QPA targets use ARGB32 as native format. Task-number: QTBUG-69724 Change-Id: I6d7993c12da46a85b8354eb905930dae9602b5e6 Reviewed-by: Lars Knoll <>
Diffstat (limited to 'src')
1 files changed, 2 insertions, 0 deletions
diff --git a/src/gui/painting/qdrawhelper.cpp b/src/gui/painting/qdrawhelper.cpp
index b277278fe0..0f2d163840 100644
--- a/src/gui/painting/qdrawhelper.cpp
+++ b/src/gui/painting/qdrawhelper.cpp
@@ -5322,8 +5322,10 @@ void qBlendTexture(int count, const QSpan *spans, void *userData)
case QImage::Format_RGB16:
proc = processTextureSpansRGB16[blendType];
+#if defined(__SSE2__) || defined(__ARM_NEON__) || (Q_PROCESSOR_WORDSIZE == 8)
case QImage::Format_ARGB32:
case QImage::Format_RGBA8888:
case QImage::Format_BGR30:
case QImage::Format_A2BGR30_Premultiplied:
case QImage::Format_RGB30: