e9b3381715
Before resolving a rendertarget or a depth/stencil resource into a
texture, flush both the color cache and the depth cache together.
It is unclear whether this is necessary for the following stall to
work properly, or whether the depth flush just adds enough time
for the color cache flush to finish before the resolver is started,
but this change removes artifacts that otherwise appear if a texture
is sampled directly after rendering into it.
The test case is a simple QML scene graph with a QtWebEngine based
WebView rendered on top of a blue background:
import QtQuick 2.0
import QtQuick.Window 2.2
import QtWebView 1.1
Window {
Rectangle {
id: background
anchors.fill: parent
color: "blue"
}
WebView {
id: webView
anchors.fill: parent
}
Component.onCompleted: {
webView.url = "<some animated website>"
}
}
If the website is animated, the WebView renders the site contents into
texture tiles and immediately afterwards samples from them to draw the
tiles into the Qt renderbuffer. Without this patch, a small irregular
triangle in the lower right of each browser tile appears solid blue, as
if the texture sampler samples zeroes instead of the website contents,
and the previously rendered blue Rectangle shows through.
Other attempts such as adding a pipeline stall before the color flush or
a TS cache flush afterwards or flushing multiple times, with stalls
before and after each flush, have shown no effect.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
|
||
|---|---|---|
| bin | ||
| docs | ||
| doxygen | ||
| include | ||
| m4 | ||
| scons | ||
| scripts | ||
| src | ||
| .dir-locals.el | ||
| .editorconfig | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .travis.yml | ||
| Android.common.mk | ||
| Android.mk | ||
| CleanSpec.mk | ||
| Makefile.am | ||
| REVIEWERS | ||
| SConstruct | ||
| VERSION | ||
| appveyor.yml | ||
| autogen.sh | ||
| common.py | ||
| configure.ac | ||
| install-gallium-links.mk | ||
| install-lib-links.mk | ||
docs/README.WIN32
File: docs/README.WIN32 Last updated: 21 June 2013 Quick Start ----- ----- Windows drivers are build with SCons. Makefiles or Visual Studio projects are no longer shipped or supported. Run scons libgl-gdi to build gallium based GDI driver. This will work both with MSVS or Mingw. Windows Drivers ------- ------- At this time, only the gallium GDI driver is known to work. Source code also exists in the tree for other drivers in src/mesa/drivers/windows, but the status of this code is unknown. Recipe ------ Building on windows requires several open-source packages. These are steps that work as of this writing. - install python 2.7 - install scons (latest) - install mingw, flex, and bison - install pywin32 from here: http://www.lfd.uci.edu/~gohlke/pythonlibs get pywin32-218.4.win-amd64-py2.7.exe - install git - download mesa from git see https://www.mesa3d.org/repository.html - run scons General ------- After building, you can copy the above DLL files to a place in your PATH such as $SystemRoot/SYSTEM32. If you don't like putting things in a system directory, place them in the same directory as the executable(s). Be careful about accidentially overwriting files of the same name in the SYSTEM32 directory. The DLL files are built so that the external entry points use the stdcall calling convention. Static LIB files are not built. The LIB files that are built with are the linker import files associated with the DLL files. The si-glu sources are used to build the GLU libs. This was done mainly to get the better tessellator code. If you have a Windows-related build problem or question, please post to the mesa-dev or mesa-users list.