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authorGerhard Roethlin <git@the-color-black.net>2011-02-24 11:23:59 (GMT)
committerSamuel Rødal <samuel.rodal@nokia.com>2011-02-24 11:23:59 (GMT)
commit3cca3491777110f34276b4f44ccf355c3dcd6dbc (patch)
tree502f4099d651c5c1fdf73f526a14356e3e231394 /src/opengl
parent244620438700464a862ceab7c881974a5b1d1fea (diff)
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OpenGL Framebuffer Format
OpenGL's framebuffer contains data with premultiplied alpha images, so QImage::Format_ARGB32_Premultiplied should be used instead of QImage::Format_ARGB32 to store it. Alternatively, the color values could be divided by the alpha to restore the original color. Merge-request: 1102 Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>
Diffstat (limited to 'src/opengl')
-rw-r--r--src/opengl/qgl.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/opengl/qgl.cpp b/src/opengl/qgl.cpp
index 0ec3a15..76621e9 100644
--- a/src/opengl/qgl.cpp
+++ b/src/opengl/qgl.cpp
@@ -1791,7 +1791,7 @@ static void convertFromGLImage(QImage &img, int w, int h, bool alpha_format, boo
QImage qt_gl_read_framebuffer(const QSize &size, bool alpha_format, bool include_alpha)
{
- QImage img(size, (alpha_format && include_alpha) ? QImage::Format_ARGB32
+ QImage img(size, (alpha_format && include_alpha) ? QImage::Format_ARGB32_Premultiplied
: QImage::Format_RGB32);
int w = size.width();
int h = size.height();