The macro GL_RESOLVE_WITH_EXT was fundamentally broken as it tried to
resolve a symbol first by it's name and then by the extension name if
the returned pointer is null.
From GLX spec:
"A non-NULL return value for glXGetProcAddress does not guarantee that an
extension function is actually supported at runtime. The client must also query
glGetString(GL EXTENSIONS) or glXQueryExtensionsString to determine if an
extension is supported by a particular context."
This macro is now reworked to be used only in case the symbol name does
not match our function name. E.g. glUniform1f vs glUniform1fARB.
The resolving itself also had quite some issues as:
* in same cases function pointers are not nulled
* in same cases only the arb or only the ext is checked
* in same cases the wrong extension is checked
This is now reworked to always check first the ARB extension if available
then the EXT extension and if both are not available the pointers are set
to NULL.
The Egl backend is decoupled from the OpenGL ES build option which makes
it possible to use it as a replacement for glx.
To make this possible a new build flag is added when egl is available at
compile time and any egl specific code is now ifdefed with this flag
instead of the gles flag. In addition at runtime a windowing system enum
value is passed to the various detect methods to have egl/glx specific
detection for e.g. function pointer resolving.
By default egl is used if compiled with OpenGL ES, otherwise glx is used.
But in the non-gles case the windowing system can be selected through the
new environment variable KWIN_OPENGL_INTERFACE. Setting this variable to
"egl" the EglOnXBackend is used.
REVIEW: 106632
The ShaderBinder class can be used for the case that a block of code
should be executed with a given Shader being bound. This is useful for
all the cases where there is a if-block for OpenGL2 execution with a
Shader being pushed in the first line to the ShaderManager and popped in
the last line of the block. With the helper this can be simplified to:
ShaderBinder binder(myCustomShader);
or
ShaderBinder binder(ShaderManager::GenericShader);
The ctor of ShaderBinder pushes the given Shader to the stack and once
the helper goes out of scope it will be popped again from the stack.
In addition the helper can take care of OpenGL 1 compositing, that is it
just does nothing. So it can also be used where there is a shared OpenGL1
and OpenGL2 code path where the Shader should only be pushed in OpenGL2.
This basically removes all the checks for the compositing type before
pushing/popping a Shader to the stack.
REVIEW: 106521
The main usage of ShaderManager::isValid was to have OpenGL2 specific
code pathes. Now we have an actual OpenGL2Compositing type and we know
that the ShaderManager is valid if we have this compositing type and we
know that it is not valid on OpenGL1Compositing. This gives us a much
better check and allows us to use the isValid method just for where we
want to check whether the shaders compiled successfully.
In addition some effects require OpenGL2, so we do not need to check
again that the ShaderManager is valid. Such usages are removed.
The CompositingType enum turns into flags and two new values are
introduced: OpenGL1Compositing and OpenGL2Compositing.
Those new values are or-ed to OpenGLCompositing so that a simple check
for the flag OpenGLCompositing works in case of one of those two new
values. To make the generic check for OpenGL compositing easier a method
in EffectsHandler is introduced to just check for this.
The scenes now return either OpenGL1Compositing or OpenGL2Compositing
depending on which Scene implementation. None returns OpenGLCompositing.
SceneOpenGL turns into an abstract class with two concrete subclasses:
* SceneOpenGL1
* SceneOpenGL2
It provides a factory method which first creates either the GLX or EGL
backend which is passed to a static supported() method in the concrete
sub classes. These method can test whether the backend is sufficient to
be used for the OpenGL version in question. E.g. the OpenGL 2 scene
checks whether the context is direct.
The actual rendering is moved into the subclasses with specific OpenGL 1
and OpenGL 2 code. This should make the code more readable and requires
less checks whether a Shader is bound. This is now known through the
Scene: the OpenGL1 scene will never have a shader bound, the OpenGL2 scene
will always have a shader bound.
To make this more reliable the ShaderManager is extended by a disable
method used by SceneOpenGL1 to ensure that the ShaderManager will never
be used. This also obsoletes the need to read the KWin configuration
whether legacy GL is enabled. The check is moved into the supported
method of the OpenGL2 scene.
REVIEW: 106357
Currently the GL Matrix Stack is also used with OpenGL 2.
That is pushMatrix, multMatrix and popMatrix are executed
although this does not influence the rendering at all. The
OpenGL 1 matrices are not passed to the shaders.
With this change the calls to the matrix stack are no longer
executed if the Shader based backend is used. This means we
have a few less matrix multiplications in the rendering.
Mostly affects a few effects which have not yet completely be
ported over to OpenGL 2.
BUG: 303093
FIXED-IN: 4.10
REVIEW: 105455
The public member variables for opacity, saturation and brightness
are removed in favor for getter and setters. The variables are
moved into a private class. Those are now qreal instead of double.
To make usage inside the effects easier a multiply method is added
which multiplies the current value with passed in factor and returns
the new value in a functional programming style.
This commit is the top-most of a patch series to refactor
ScreenPaintData and WindowPaintData. Other related commits are:
* 0811772
* ebdc7ec
* 2c8dd8d
* 7699726
* 68e0201
* 611cb09
REVIEW: 105141
BUG: 303314
FIXED-IN: 4.10
No effect has ever made use of contents opacity. Which means it
is not needed. Removing means faster effects as we used to
multiply the value (always 1.0) with the opacity in each frame
for each window.
New properties for the current activity and the available
activities plus related signals in scripts. Signals added to
effects.
BUG: 302060
FIXED-IN: 4.9.0
m_textureNPOT and m_limitedNPOT have not been initialized in the ctor resulting in
m_limitedNPOT being incorrectly being true sometimes for Intel drivers. For other
drivers the value had been set.
A CMake variable is used to specify the name of the binary.
By default this is "kwin" but building for PA changes the
name to "kwinactive". The variable adjusts all names, e.g.
kwinnvidiahack becomes kwinactivenvidiahack.
The remaining usage of kwinrc in core and libs is replaced
by a cmakedefine for the configuration name and all data
installations are moved to the defined name. Dynamic loading
for scripts & co is adjusted for loading based on defined name.
This change allows the side-by-side installation of both kwin
for desktop and kwin for Plasma Desktop without the known
issues like conflicts in config files or missing build options
if kwin desktop is used for Plasma Active.
Likewise the KCMs are not adjusted as they are not intended to
be used for kwinactive.
REVIEW: 104299
BUG: 296084
FIXED-IN: 4.9.0
CCMAIL: active@kde.org
Additional TabBox Mode which allows to switch between all open
windows of the current selected application. By default Alt+tilde
is used which is on qwerty just one key above tab. For non-qwerty
layouts the shortcut is unfortunately not convenient.
REVIEW: 104730
FEATURE: 299308
FIXED-IN: 4.9.0
This makes kwin in OpenGL2 mode more coherent with kwin_gles.
Despite some fullscreen effects they should now make the same
(pure) OpenGL calls.
REVIEW: 103804
Simplifies the API. An FPx2 can be defined as a single real value
or a complex object with two real values:
{
value1: 1.0,
value2: 2.0
}
For a default ctor a null value can be used.
Scripted effects follow the Plamsoid package structure and the effect
loader recognizes a scripted effect at the according line in the desktop
file. If it is a scripted effect a different loader is used which
instantiates an object of the ScriptedEffect class. This class inherits
the AnimationEffect and exports the animate method and the EffectsHandler.
A few more getters for parsed information are added to GlPlatform.
This includes the driver information retrieved through glGetString
and information like direct rendering and loose binding.
Additionally the methods to convert version, driver and chipClass
to string are added to the public interface.
These changes allow parts outside GlPlatform to get the same debug
information about the GL system.
