qt5base-lts/tests
Laszlo Agocs 5b334729d3 rhi: gl: Avoid magic adjustments to the context/window format
...by removing the entire adjustedFormat() helper.

Qt Quick has never used this, which indicates it is not that
useful. Same goes for Qt Multimedia or Qt 3D. Ensuring depth and
stencil is requested is already solved by using
QSurfaceFormat::setDefaultFormat() or by adjusting the formats
everywhere as appropriate.

The helper function's usages are in the manual tests that use it as a
shortcut, and in the GL backend itself. Remove it and leave it up the
client to set the depth or stencil buffer size, typically in the
global default surface format. (which in fact many of the mentioned
manual tests already did, so some of calls to
window->setFormat(adjustedFormat()) were completely unnecessary)

By not having the built-in magic that tries to always force depth and
stencil, we avoid problems that arise then the helper cannot be easily
invoked (thinking of widgets and backingstores), and so one ends up
with unexpected stencil (or depth) in the context (where the GL
backend auto-adjusts), but not in the window (which is not under
QRhi's control).

It was in practice possible to trigger EGL_BAD_MATCH failures with the
new rhi-based widget composition on EGL-based systems. For example, if
an application with a QOpenGLWidget did not set both depth and stencil
(but only one, or none), it ended up failing due to the context -
surface EGLConfig mismatches. On other platforms this matters less due
to less strict config/pixelformat management.

Pick-to: 6.4
Change-Id: I28ae2de163de63ee91bee3ceae08b58e106e1380
Fixes: QTBUG-104951
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
2022-08-01 12:40:45 +02:00
..
auto rhi: gl: Avoid magic adjustments to the context/window format 2022-08-01 12:40:45 +02:00
baseline CMake: Don't use PUBLIC_LIBRARIES for tests and test helpers 2022-07-28 14:46:53 +02:00
benchmarks CMake: Don't use PUBLIC_LIBRARIES for tests and test helpers 2022-07-28 14:46:53 +02:00
global
libfuzzer Use SPDX license identifiers 2022-05-16 16:37:38 +02:00
manual rhi: gl: Avoid magic adjustments to the context/window format 2022-08-01 12:40:45 +02:00
shared Use SPDX license identifiers 2022-05-16 16:37:38 +02:00
testserver Use SPDX license identifiers 2022-05-16 16:37:38 +02:00
CMakeLists.txt CMake: Refactor optimization flag handling and add optimize_full 2020-10-06 10:07:05 +02:00
README

This directory contains autotests and benchmarks based on Qt Test. In order
to run the autotests reliably, you need to configure a desktop to match the
test environment that these tests are written for.

Linux X11:

   * The user must be logged in to an active desktop; you can't run the
     autotests without a valid DISPLAY that allows X11 connections.

   * The tests are run against a KDE3 or KDE4 desktop.

   * Window manager uses "click to focus", and not "focus follows mouse". Many
     tests move the mouse cursor around and expect this to not affect focus
     and activation.

   * Disable "click to activate", i.e., when a window is opened, the window
     manager should automatically activate it (give it input focus) and not
     wait for the user to click the window.