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Task-number: QTBUG-41046
Change-Id: Iab628d2d6811d528e2cc513b6f8a74baa628541d
Reviewed-by: Gunnar Sletta <gunnar@sletta.org>
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This must be some leftover: there are no winsys interface dependencies
outside the platform plugins.
Change-Id: Idde64699a5335155bdda745e78d6edbc68a8711b
Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>
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Change-Id: I24d10dab121c23b0683fa99bd309cf557c3ddffb
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>
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The patch introduces a new build configuration on Windows which
can be requested by passing -opengl dynamic to configure.
Platforms other than Windows (including WinRT) are not affected.
The existing Angle and desktop configurations are not affected.
These continue to function as before and Angle remains the default.
In the future, when all modules have added support for the dynamic
path, as described below, the default configuration could be changed
to be the dynamic one. This would allow providing a single set of
binaries in the official builds instead of the current two.
When requesting dynamic GL, Angle is built but QT_OPENGL_ES[_2] are
never defined. Instead, the code path that has traditionally been
desktop GL only becomes the dynamic path that has to do runtime
checks. Qt modules and applications are not linked to opengl32.dll or
libegl/glesv2.dll in this case. Instead, QtGui exports all necessary
egl/egl/gl functions which will, under the hood, forward all requests
to a dynamically loaded EGL/WGL/GL implementation.
Porting guide (better said, changes needed to prepare your code to
work with dynamic GL builds when the fallback to Angle is utilized):
1. In !QT_OPENGL_ES[_2] code branches use QOpenGLFunctions::isES() to
differentiate between desktop and ES where needed. Keep in mind that
it is the desktop GL header (plus qopenglext.h) that is included,
not the GLES one.
QtGui's proxy will handle some differences, for example calling
glClearDepth will route to glClearDepthf when needed. The built-in
eglGetProcAddress is able to retrieve pointers for standard GLES2
functions too so code resolving OpenGL 2 functions will function
in any case.
2. QT_CONFIG will contain "opengl" and "dynamicgl" in dynamic builds,
but never "angle" or "opengles2".
3. The preprocessor define QT_OPENGL_DYNAMIC is also available in
dynamic builds. The usage of this is strongly discouraged and should
not be needed anywhere except for QtGui and the platform plugin.
4. Code in need of the library handle can use
QOpenGLFunctions::platformGLHandle().
The decision on which library to load is currently based on a simple
test that creates a dummy window/context and tries to resolve an
OpenGL 2 function. If this fails, it goes for Angle. This seems to work
well on Win7 PCs for example that do not have proper graphics drivers
providing OpenGL installed but are D3D9 capable using the default drivers.
Setting QT_OPENGL to desktop or angle skips the test and forces
usage of the given GL. There are also two new application attributes
that could be used for the same purpose.
If Angle is requested but the libraries are not present, desktop is
tried. If desktop is requested, or if angle is requested but nothing
works, the EGL/WGL functions will still be callable but will return 0.
This conveniently means that eglInitialize() and such will report a failure.
Debug messages can be enabled by setting QT_OPENGLPROXY_DEBUG. This will
tell which implementation is chosen.
The textures example application is ported to OpenGL 2, the GL 1
code path is removed.
[ChangeLog][QtGui] Qt builds on Windows can now be configured for
dynamic loading of the OpenGL implementation. This can be requested
by passing -opengl dynamic to configure. In this mode no modules will
link to opengl32.dll or Angle's libegl/libglesv2. Instead, QtGui will
dynamically choose between desktop and Angle during the first GL/EGL/WGL
call. This allows deploying applications with a single set of Qt libraries
with the ability of transparently falling back to Angle in case the
opengl32.dll is not suitable, due to missing graphics drivers for example.
Task-number: QTBUG-36483
Change-Id: I716fdebbf60b355b7d9ef57d1e069eef366b4ab9
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>
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private api, but useful for 2d gui code that suddenly finds itself
needing to get a set of textures onto some fbo
I didn't want to include ARB_copy_image since it looks like its from
texture/renderbuffer -> texture/renderbuffer while this class implies
texture -> write fbo. We could wrap ARB_copy_image in QOpenGLTexture or
some other class or we can add it later.
I have not added any QOpenGLTexture functions since this class opperates
on the GLuint identifier. We can add overloads later.
Change-Id: I3e565b33466c1c183a249a33c3e82c6786debd55
Reviewed-by: Paul Olav Tvete <paul.tvete@digia.com>
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Change-Id: I3ec2b7af303070c92e86c0f5ca729eb1a1731682
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
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Task-number: QTBUG-33274
Change-Id: I9259d947d11f8ba330a2cd7f5620d8f1af0a804b
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>
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Qt convenience classes for the GL_KHR_debug extension
This allows the developer to
1) ask the GL for a log of the last generated messages;
2) emit Qt signals whenever the GL wants to tell us something.
Change-Id: I830343a26714c51abb68ce1269163c145d1e2aac
Reviewed-by: Samuel Rødal <samuel.rodal@digia.com>
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QOpenGLTimerQuery encapsulates a single OpenGL timer query object.
QOpenGLTimeMonitor is a convenience wrapper around a sequence of
OpenGL timer query objects that can be used to profile OpenGL
rendering code or to allow real-time adaptation of rendering
methods based upon run-time performance.
Change-Id: I873e591927080dea2b079b0e2a1eb9fed15c0372
Reviewed-by: Samuel Rødal <samuel.rodal@digia.com>
Reviewed-by: James Turner <james.turner@kdab.com>
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This class makes it much simpler to manage OpenGL state relating to
vertex data (i.e. vertex buffer objects, vertex attribute divisors,
index buffer objects, vertex buffer formats).
Change-Id: I9fb932cc3f0691ec9ba065bf871e43cd2e369bad
Reviewed-by: James Turner <james.turner@kdab.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>
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This commit adds part of the output of utils/glgen and some simple
modifications to QOpenGLContext to allow easy access to classes
containing functions specific to a given OpenGL context and version.
This allows compile-time detection of mis-use of OpenGL features.
For example, trying to use glBegin(GL_TRIANGLES) with an OpenGL 3.2
Core Profile context will be detected by the compiler rather than at
runtime.
These capabilities make it much easier to add functionality to Qt and
applications that relies upon core features of OpenGL from specific
versions e.g. geometry shaders.
Change-Id: Ieb584a489792595f831bc77dee84935c03bb5a64
Reviewed-by: Samuel Rødal <samuel.rodal@digia.com>
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we were already installing them into QtCore/private, so turn them into
proper private headers to start with. this cleans up our project files.
Change-Id: I0795f79e03b60b5854de9e4dc339e9b5a5e6fd87
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
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Change-Id: I9d8f609c9ecb02dd25e588313bc98db4b9325974
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>
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The include files have a hard dependency on OpenGL (ES2); testing for the
presence of EGL support is insufficient grounds for including this
functionality
Change-Id: I391b5dbbcbef40ecf68d16617b6eb1c0bb4b799e
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>
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This takes out the dependency to the header files
of OpenGl. The ifdef QT_NO_OPENGL in the opengl headers
are needed, as qmake adds depends in the makefiles
for all GUI headers.
Task-number: QTBUG-23207
Change-Id: If31448ee35fd8c39194c7cb7d62273fbc6def883
Reviewed-by: Stephen Kelly <stephen.kelly@kdab.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>
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The QGLColormap API was used by QGLWidget, not very relevant in the Qt 5
core API.
Change-Id: I3c75ac09cbc292e707aea62759c09277f834de8d
Reviewed-on: http://codereview.qt-project.org/6333
Sanity-Review: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
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This is simpler than the existing texture cache in QtOpenGL, as it only
serves the GL paint engine. There's one per context group, to simplify
the design and to prevent performance degradations.
Change-Id: I61e3c9a444d8e246a8b38da019a56f2c0a533c0c
Reviewed-on: http://codereview.qt-project.org/4674
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Kim M. Kalland <kim.kalland@nokia.com>
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The new API is more flexible, allowing the use of QOpenGLPaintDevice
with any QOpenGLContext, and putting more responsibility on the user for
ensuring the correct FBO is current (the user knows best anyhow).
Task-number: QTBUG-21263
Change-Id: I50b954125f552baef52fbb3fe2ed907a11ad519c
Reviewed-on: http://codereview.qt-project.org/4325
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Paul Olav Tvete <paul.tvete@nokia.com>
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We don't want to have source files in the opengl module and gui with the
same name, at least not private headers.
Change-Id: I5f2bf629c943a67a405574fb148aa4c70e58ecbb
Reviewed-on: http://codereview.qt.nokia.com/3864
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>
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Change-Id: I26552e85a8e8c63002db93b7d9b645981620f0af
Reviewed-on: http://codereview.qt.nokia.com/3738
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>
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Change-Id: Ibc989afa4a30dd184d41d1a1cd89f97196e48855
Reviewed-on: http://codereview.qt.nokia.com/3710
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>
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