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author | Trond Kjernåsen <trond.kjernasen@nokia.com> | 2010-05-14 15:42:43 +0200 |
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committer | Trond Kjernåsen <trond.kjernasen@nokia.com> | 2010-05-14 15:42:43 +0200 |
commit | 9a69656bd64016933124813ea5403e7e5d454719 (patch) | |
tree | 220e31e08e11bfa3a76627b53f303880e065f8e0 /src/opengl/qglpaintdevice.cpp | |
parent | b2e15281d56415e6ef8d4f1604d25b198d449f06 (diff) | |
download | qt4-tools-9a69656bd64016933124813ea5403e7e5d454719.tar.gz |
Added workarounds for two MBX/SGX specific GL ES bugs/problems.
The workaround flags are put into the platform independent section
for now, since there might be a general need for these as we expand
our GL and GL ES usage. The workaround_needsFullClearOnEveryFrame flag
covers the case where you get a performance penalty on PowerVR hw
if all rendering buffers are not cleared. The
workaround_brokenFBOReadBack flag covers the case where copying pixels
from a texture (e.g. via glCopyTexSubImage2d()) bound in an FBO doesn't
work.
Task-number: QTBUG-10670
Reviewed-by: Gunnar
Diffstat (limited to 'src/opengl/qglpaintdevice.cpp')
-rw-r--r-- | src/opengl/qglpaintdevice.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/opengl/qglpaintdevice.cpp b/src/opengl/qglpaintdevice.cpp index e874e85c38..e1dcbfde89 100644 --- a/src/opengl/qglpaintdevice.cpp +++ b/src/opengl/qglpaintdevice.cpp @@ -175,7 +175,10 @@ void QGLWidgetGLPaintDevice::beginPaint() float alpha = c.alphaF(); glClearColor(c.redF() * alpha, c.greenF() * alpha, c.blueF() * alpha, alpha); } - glClear(GL_COLOR_BUFFER_BIT); + if (context()->d_func()->workaround_needsFullClearOnEveryFrame) + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT); + else + glClear(GL_COLOR_BUFFER_BIT); } } |