This reverts commit a9238292.

It also reverts follow-up commits:
  87755d04
  c2c710e5
  cc8a76ce



The new implementation is much too slow because it will cause each
section of the border image to be uploaded to the atlas, and it will
not be shared between different border images nor between different
sizes of the border. The performance regression is so significant
that it's not worth it for the original bug fix.

We leave the tests around, so some of those might regress due to
this.

Change-Id: I3f56f4564255ebb77e6487881a6a11b19ad0234e
Task-number: QTBUG-42288
Task-number: QTBUG-35838
Reviewed-by: Michael Brasser <michael.brasser@live.com>

Keeping all patches of the border image in the same texture
with different sample points can cause parts of the border
to bleed over to the center patch. To rectify this, we
create a separate texture for each of the nine patches we
need, and separate image nodes.

To avoid applying antialiasing on the interior edges of the
border image, we introduce new antialiasing flags which can
be used to specify precisely which edges of the image should
be antialiased.

[ChangeLog][BorderImage] Fixed possible pixel bleed between
border patches and center patch in BorderImage.

Change-Id: Icc292b3969217320eecca99e79675316c42eab08
Task-number: QTBUG-35838
Reviewed-by: Gunnar Sletta <gunnar@sletta.org>

- Renamed LICENSE.LGPL to LICENSE.LGPLv21
- Added LICENSE.LGPLv3 & LICENSE.GPLv2
- Removed LICENSE.GPL

Change-Id: I84a565e2e0caa3b76bf291a7d188a57a4b00e1b0
Reviewed-by: Jani Heikkinen <jani.heikkinen@digia.com>

This basically renames QQuickShaderEffectTexture to QSGDefaultLayer and
introduces QSGLayer as interface to be used. QQuickShaderEffectTexture is
generic for the scene graph and has no QtQuick dependencies. The interface
separation allows scene graph backends to customize layers.

Change-Id: I9a7f37addaa4b80a34ff9a1456b0cb9b16d4e9f3
Reviewed-by: Gunnar Sletta <gunnar.sletta@jollamobile.com>

Task-number: QTBUG-38564
Change-Id: Ice1170339f7d650fcb6accfccf325471629343d6
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

The counterpart to I716fdebb. Implements the dynamic path
in scenegraph.

Task-number: QTBUG-36483
Change-Id: I2dc613ba84560b7b8e36d3cd1da61c050ab08db0
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>

The default implementation of QSGShaderMaterial::vertexShader() and
fragmentShader() now loads the GLSL source from a list of source files
that can be specified via the setShaderSourceFile() or
setShaderSourceFiles() functions.

Multiple shader source files for each shader stage are supported. Each
source file will be read in the order specified and concatenated
together before being compiled.

The other places where Qt Quick 2 loads shader source code have
been adapted to use the new QSGShaderSourceBuilder, which is also
used internally by QSGMaterial.

This puts Qt Quick 2 into a better state ready to support OpenGL
core profile and to load different shaders based upon OpenGL version,
profile, GPU vendor, platform, etc.

Change-Id: I1a66213c2ce788413168eb48c7bc5317e61988a2
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>

A texture based node without a valid texture is not allowed,
as the material and the renderer will only tolerate
well-formed nodes. If a node is missing any part of its material
state it should not be in the scene graph in the first place.

Because of an "optimization" in QSGDefaultImageNode::setTexture
and QSGSimpleTextureNode::setTexture, we must temporarily set
the texture to 0 to ensure that it gets updated properly. This
temporarily puts the node into an invalid state which can lead
to crashes when QSGNode::markDirty() reaches the renderer.

Task-number: QTBUG-34062
Change-Id: Ic1735c9b974b90b3684262de9589133c961bac6e
Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>

Change-Id: I3750c47640bf21c3567c5fa1c4667e3e2552942e
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

Found by ICC 14. This warning is not made an error because ICC is too
chatty when it comes to detecting unused functions. In this case,
however, it is right.

qsgtexturematerial.cpp(49): warning #177: function "isPowerOfTwo" was declared but never referenced
qsgtexture.cpp(84): warning #177: function "isPowerOfTwo" was declared but never referenced
qsgdefaultimagenode.cpp(368): warning #177: function "isPowerOfTwo" was declared but never referenced

Change-Id: I6c96dad3e1236fd33a02232f886ca33fa2b21258
Reviewed-by: Alan Alpert (Personal) <416365416c@gmail.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>

This define is quite useful for debugging scene graph internals, but
it is disabled by default to conserve memory.

For clarity, I renamed the define to QSG_RUNTIME_DESCRIPTION.

Change-Id: Ie5ff44d67af38adc65d0d09255d8533dc7a33bff
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>

Without the private export on these classes, the private
export on the QSGDefaultImageNode and QSGDefaultTextureNode
is useless, as the symbols fail to resolve

Change-Id: I25a265a7669e5f5015c482aa24fe154c2c9a1062
Reviewed-by: Alan Alpert <aalpert@blackberry.com>

Change-Id: I6c3bd7bebe3d62d1cfd0fa6334544c9db8398c76
Reviewed-by: Akseli Salovaara <akseli.salovaara@digia.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>

Change-Id: Ic3b9defa6ac61409adcfb2b5cb8167698ed00255
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>

The new AA algorithm which is implemented in the vertex shader of
SmoothColorMaterialShader and SmoothTextureMaterialShader exposes
a driver bug in the glsl compiler/optimiser for the GPU used in
the BlackBerry PlayBook.

The bug results in the if (scale < 0.0) scale = 1.0 code always
being executed even when the condition is false. This leads to
massive corrupion of Image, Rectangle, and BorderImage elements
when the antialiasing property is enabled.

This commit works around the compiler bug by refactoring the
vertex shader to explicitly include an else clause. The check for
negative values is now performed on the numerator only as the
denominator is dot(dir, dir) which is always positive (square of
magnitude of dir vector).

This gives the correct behaviour on all platforms (that I have
access to).

Change-Id: I236542c9b59ff2915e95cbd9300b442be316bba9
Reviewed-by: Samuel Rødal <samuel.rodal@digia.com>

Change copyrights and license headers from Nokia to Digia

Change-Id: Ie7f5d49ed8235d7a7845ab68f99ad1c220e64d5c
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

Change-Id: I8dcc1c3f1d6959eef35a45f920bb37c08100a510
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>

Task-number: QTBUG-26563
Change-Id: I346bc155aa16e92367dee2082974856769bad90a
Reviewed-by: Glenn Watson <glenn.watson@nokia.com>

Since multisampling can require a lot of memory, and might not
be supported on some hardware, turn off multisampling and
implement antialiasing in the vertex shader instead. The
alternative method of antialiasing is implemented for Rectangle,
Image, BorderImage and AnimatedImage, and must be explicitly
enabled by setting the new antialiasing property.

Task-number: QTBUG-26268
Change-Id: I39a93d978658a494bf51e9f0fd02d8414eb8be12
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>

Symbols beginning with QDeclarative are already exported
by the quick1 module.

Users can apply the bin/rename-qtdeclarative-symbols.sh
script to modify client code using the previous names of the
renamed symbols.

Task-number: QTBUG-23737
Change-Id: Ifaa482663767634931e8711a8e9bf6e404859e66
Reviewed-by: Martin Jones <martin.jones@nokia.com>

As in the past, to avoid rewriting various autotests that contain
line-number information, an extra blank line has been inserted at the
end of the license text to ensure that this commit does not change the
total number of lines in the license header.

Change-Id: If39bd256b0fa85eba17ea30f8ab87ea27d758908
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>

Change-Id: Id61cdaf1078d7b61d39644a80df8067f4ce4ceb0
Reviewed-by: Kim M. Kalland <kim.kalland@nokia.com>

Replace Nokia contact email address with Qt Project website.

Change-Id: I6a730abc0c396fb545a48b2d6938abedac2e3f1c
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
Reviewed-by: Alan Alpert <alan.alpert@nokia.com>

Update copyright headers from before 2011, and a couple of new ones that
were merged after the previous change to copyright headers.

Change-Id: Ia76e08e2734afa4ef3f1207dbcda5ff3bc81b366
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>

This is enabled by doing "Item.layer.enabled: true". The implementation
is solely based on the existing shader effect (source) and simply
swaps in a sibling next to the item when enabled.

This change also adds the QSGTextureProvider to the public API,
as it is now a natural part of the QQuickItem API since all items
can be textures.

Change-Id: I26705c11e92d5623a5121300acc123782b784077
Reviewed-by: Kim M. Kalland <kim.kalland@nokia.com>

This change moves the QtQuick 2 types and C++ API (including
SceneGraph) to a new module (AKA library), QtQuick.

99% of this change is moving files from src/declarative to
src/quick, and from tests/auto/declarative to
tests/auto/qtquick2.

The loading of QtQuick 2 ("import QtQuick 2.0") is now delegated to
a plugin, src/imports/qtquick2, just like it's done for QtQuick 1.

All tools, examples, and tests that use QtQuick C++ API have gotten
"QT += quick" or "QT += quick-private" added to their .pro file.

A few additional internal QtDeclarative classes had to be exported
(via Q_DECLARATIVE_PRIVATE_EXPORT) since they're needed by the
QtQuick 2 implementation.

The old header locations (e.g. QtDeclarative/qquickitem.h) will
still be supported for some time, but will produce compile-time
warnings. (To avoid the QtQuick implementation using the
compatibility headers (since QtDeclarative's includepath comes
first), a few include statements were modified, e.g. from
"#include <qsgnode.h>" to "#include <QtQuick/qsgnode.h>".)

There's a change in qtbase that automatically adds QtQuick to the
module list if QtDeclarative is used. Together with the compatibility
headers, this should help reduce the migration pain for existing
projects.

In theory, simply getting an existing QtDeclarative-based project
to compile and link shouldn't require any changes for now -- but
porting to the new scheme is of course recommended, and will
eventually become mandatory.

Task-number: QTBUG-22889
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Change-Id: Ia52be9373172ba2f37e7623231ecb060316c96a7
Reviewed-by: Kent Hansen <kent.hansen@nokia.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@nokia.com>

Fixes the texture coordinates for the inner tiles in a tiling
algorithm that scenegraph default image node uses when texture
is a subrect and image repeats.

Change-Id: Iacf3e63c4c02bdbdc473f8128efecc7908322a50
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>

Rename QGuiGLContext -> QOpenGLContext, QGL* -> QOpenGL*, etc.

Change-Id: I08379029d756e28b20ae141ca30ed801626b513d
Reviewed-on: http://codereview.qt.nokia.com/3711


Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>

Replace old license header with correct one.

Change-Id: I492ddaaa0227b2c8faf11bdcd6e12e7231a54a10
Reviewed-on: http://codereview.qt.nokia.com/1312


Reviewed-by: Jyri Tahtela <jyri.tahtela@nokia.com>

Repeat wrapping of non-power-of-two textures is not supported
on OpenGL ES 2 by default. This commit implements a fallback
for tiled QML Images.

This reverts commit ffb6fe57ee0ece18b6778889f7602811ab4ca822.

Conflicts:

	src/declarative/scenegraph/qsgdefaultimagenode.cpp

Branched from the monolithic repo, Qt qtquick2 branch, at commit
a4a585d2ee907746682846ae6e8a48e19deef469