whytofly
/
qt6-bb10
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Windows: Fallback to 0 samples if ARB::choosePixelFormat() fails with 1 

This solves a problem when using a Qt application over remote desktop as
if it failed with even 1 sample then it would fallback to GDI which causes
an error if the software OpenGL option is used.

Change-Id: Ib311a7a657f92aab15277461bc8e040bebbe4753
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
bb10
Andy Shaw 2015-03-31 09:17:39 +02:00
parent 9ea8082658
commit d64f776a9a
1 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/plugins/platforms/windows/qwindowsglcontext.cpp
View File

@ -597,6 +597,14 @@ static int choosePixelFormat(HDC hdc,
break;
if (iAttributes[samplesValuePosition] > 1) {
iAttributes[samplesValuePosition] /= 2;
} else if (iAttributes[samplesValuePosition] == 1) {
// Fallback in case it is unable to initialize with any
// samples to avoid falling back to the GDI path
// NB: The sample attributes needs to be at the end for this
// to work correctly
iAttributes[samplesValuePosition - 1] = FALSE;
iAttributes[samplesValuePosition] = 0;
iAttributes[samplesValuePosition + 1] = 0;
} else {
break;
}