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authorLaszlo Agocs <laszlo.agocs@theqtcompany.com>2015-04-17 10:53:25 +0200
committerLaszlo Agocs <laszlo.agocs@theqtcompany.com>2015-04-17 09:43:36 +0000
commit5051c63b3b818f5fb0ed9f92e74b916ea9d4e723 (patch)
treec44cd5f423d8e6a8217e7f7557ed9cd79c136bf6
parent6d073d4e070790d4e9ef707a9deef975e9f70695 (diff)
Long live QtQuickCL!
Change-Id: I16954f50c631441189dd450980da2c3266a68c71 Reviewed-by: Andy Nichols <andy.nichols@theqtcompany.com>
-rw-r--r--.qmake.conf5
-rw-r--r--LICENSE.GPL674
-rw-r--r--LICENSE.LGPLv3173
-rw-r--r--README.md77
-rw-r--r--config.tests/opencl/main.cpp54
-rw-r--r--config.tests/opencl/opencl.pro12
-rw-r--r--examples/examples.pro2
-rw-r--r--examples/quickcl/histogram/histogram.cl57
-rw-r--r--examples/quickcl/histogram/histogram.cpp318
-rw-r--r--examples/quickcl/histogram/histogram.pro15
-rw-r--r--examples/quickcl/histogram/histogram.qrc8
-rw-r--r--examples/quickcl/histogram/qml/histogram.qml140
-rw-r--r--examples/quickcl/histogram/qml/image.pngbin0 -> 306839 bytes
-rw-r--r--examples/quickcl/histogram/qml/qt.pngbin0 -> 13923 bytes
-rw-r--r--examples/quickcl/imageprocess/imageprocess.cpp187
-rw-r--r--examples/quickcl/imageprocess/imageprocess.pro15
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-rw-r--r--examples/quickcl/imageprocess/qml/imageprocess.qml129
-rw-r--r--examples/quickcl/particles/particles.cl13
-rw-r--r--examples/quickcl/particles/particles.cpp448
-rw-r--r--examples/quickcl/particles/particles.pro15
-rw-r--r--examples/quickcl/particles/particles.qrc6
-rw-r--r--examples/quickcl/particles/qml/particles.qml101
-rw-r--r--examples/quickcl/quickcl.pro2
-rw-r--r--qtquickcl.pro10
-rw-r--r--src/quickcl/doc/qtquickcl.qdocconf65
-rw-r--r--src/quickcl/qquickclcontext.cpp199
-rw-r--r--src/quickcl/qquickclcontext_p.h67
-rw-r--r--src/quickcl/qquickclimagerunnable.cpp340
-rw-r--r--src/quickcl/qquickclimagerunnable.h82
-rw-r--r--src/quickcl/qquickclitem.cpp385
-rw-r--r--src/quickcl/qquickclitem.h84
-rw-r--r--src/quickcl/qquickclrunnable.h54
-rw-r--r--src/quickcl/qtquickclglobal.h65
-rw-r--r--src/quickcl/quickcl.pro24
-rw-r--r--src/src.pro3
-rw-r--r--sync.profile15
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diff --git a/.qmake.conf b/.qmake.conf
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+++ b/.qmake.conf
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+load(qt_build_config)
+
+MODULE_VERSION = 5.5.0
+
+CMAKE_MODULE_TESTS = -
diff --git a/LICENSE.GPL b/LICENSE.GPL
new file mode 100644
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--- /dev/null
+++ b/LICENSE.GPL
@@ -0,0 +1,674 @@
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+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+ Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+ 12. No Surrender of Others' Freedom.
+
+ If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot convey a
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+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+ 13. Use with the GNU Affero General Public License.
+
+ Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
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+
+ 14. Revised Versions of this License.
+
+ The Free Software Foundation may publish revised and/or new versions of
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+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+ Each version is given a distinguishing version number. If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation. If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
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+
+ If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+ Later license versions may give you additional or different
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+
+ 15. Disclaimer of Warranty.
+
+ THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
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+ 16. Limitation of Liability.
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+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
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+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+ 17. Interpretation of Sections 15 and 16.
+
+ If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
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+state the exclusion of warranty; and each file should have at least
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+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ This program is free software: you can redistribute it and/or modify
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+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+Also add information on how to contact you by electronic and paper mail.
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+ This is free software, and you are welcome to redistribute it
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+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/LICENSE.LGPLv3 b/LICENSE.LGPLv3
new file mode 100644
index 0000000..8fbb743
--- /dev/null
+++ b/LICENSE.LGPLv3
@@ -0,0 +1,173 @@
+ GNU LESSER GENERAL PUBLIC LICENSE
+
+ The Qt Toolkit is Copyright (C) 2015 The Qt Company Ltd.
+ Contact: http://www.qt.io/licensing/
+
+ You may use, distribute and copy the Qt GUI Toolkit under the terms of
+ GNU Lesser General Public License version 3, which is displayed below.
+
+-------------------------------------------------------------------------
+
+ GNU LESSER GENERAL PUBLIC LICENSE
+ Version 3, 29 June 2007
+
+ Copyright © 2007 Free Software Foundation, Inc. <http://fsf.org/>
+Everyone is permitted to copy and distribute verbatim copies of this
+licensedocument, but changing it is not allowed.
+
+This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+0. Additional Definitions.
+
+ As used herein, “this License” refers to version 3 of the GNU Lesser
+General Public License, and the “GNU GPL” refers to version 3 of the
+GNU General Public License.
+
+ “The Library” refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
+
+ An “Application” is any work that makes use of an interface provided
+by the Library, but which is not otherwise based on the Library.
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+
+ A “Combined Work” is a work produced by combining or linking an
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+ The “Corresponding Application Code” for a Combined Work means the
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+Application, but excluding the System Libraries of the Combined Work.
+
+1. Exception to Section 3 of the GNU GPL.
+
+ You may convey a covered work under sections 3 and 4 of this License
+without being bound by section 3 of the GNU GPL.
+
+2. Conveying Modified Versions.
+
+ If you modify a copy of the Library, and, in your modifications, a
+facility refers to a function or data to be supplied by an Application
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+ a) under this License, provided that you make a good faith effort
+ to ensure that, in the event an Application does not supply the
+ function or data, the facility still operates, and performs
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+
+ b) under the GNU GPL, with none of the additional permissions of
+ this License applicable to that copy.
+
+3. Object Code Incorporating Material from Library Header Files.
+
+ The object code form of an Application may incorporate material from
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+code under terms of your choice, provided that, if the incorporated
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+(ten or fewer lines in length), you do both of the following:
+
+ a) Give prominent notice with each copy of the object code that
+ the Library is used in it and that the Library and its use are
+ covered by this License.
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+ b) Accompany the object code with a copy of the GNU GPL and this
+ license document.
+
+4. Combined Works.
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+ You may convey a Combined Work under terms of your choice that, taken
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+
+ a) Give prominent notice with each copy of the Combined Work that
+ the Library is used in it and that the Library and its use are
+ covered by this License.
+
+ b) Accompany the Combined Work with a copy of the GNU GPL and this
+ license document.
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+ c) For a Combined Work that displays copyright notices during
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+ copies of the GNU GPL and this license document.
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+ 0) Convey the Minimal Corresponding Source under the terms of
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+ suitable for, and under terms that permit, the user to
+ recombine or relink the Application with a modified version of
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+ 1) Use a suitable shared library mechanism for linking with
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+ time a copy of the Library already present on the user's
+ computer system, and (b) will operate properly with a modified
+ version of the Library that is interface-compatible with the
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+ Combined Work produced by recombining or relinking the Application
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+ 4d0, the Installation Information must accompany the Minimal
+ Corresponding Source and Corresponding Application Code. If you
+ use option 4d1, you must provide the Installation Information in
+ the manner specified by section 6 of the GNU GPL for conveying
+ Corresponding Source.)
+
+5. Combined Libraries.
+
+ You may place library facilities that are a work based on the Library
+side by side in a single library together with other library
+facilities that are not Applications and are not covered by this
+License, and convey such a combined library under terms of your
+choice, if you do both of the following:
+
+ a) Accompany the combined library with a copy of the same work
+ based on the Library, uncombined with any other library
+ facilities, conveyed under the terms of this License.
+
+ b) Give prominent notice with the combined library that part of
+ it is a work based on the Library, and explaining where to find
+ the accompanying uncombined form of the same work.
+
+6. Revised Versions of the GNU Lesser General Public License.
+
+ The Free Software Foundation may publish revised and/or new versions
+of the GNU Lesser General Public License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Library
+as you received it specifies that a certain numbered version of the
+GNU Lesser General Public License “or any later version” applies to
+it, you have the option of following the terms and conditions either
+of that published version or of any later version published by the
+Free Software Foundation. If the Library as you received it does not
+specify a version number of the GNU Lesser General Public License,
+you may choose any version of the GNU Lesser General Public License
+ever published by the Free Software Foundation.
+
+If the Library as you received it specifies that a proxy can decide
+whether future versions of the GNU Lesser General Public License shall
+apply, that proxy's public statement of acceptance of any version is
+permanent authorization for you to choose that version for the Library.
+
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..5cca20d
--- /dev/null
+++ b/README.md
@@ -0,0 +1,77 @@
+QtQuickCL - Write kernels, not boilerplate
+
+QtQuickCL is a research module for Qt 5 that enables easily creating Qt Quick
+items that execute OpenCL kernels and use OpenGL resources as their input or
+output. The functionality is minimal but powerful.
+
+For example, a Qt Quick item executing an OpenCL kernel on a texture provider,
+meaning an Image element or even an entire sub-tree of the Qt Quick scene, and
+rendering the resulting OpenGL texture gets reduced to the following:
+
+ static const char *openclSrc =
+ "__kernel void Kernel(__read_only image2d_t imgIn, __write_only image2d_t imgOut) {\n"
+ ...
+
+ class CLRunnable : public QQuickCLImageRunnable
+ {
+ public:
+ CLRunnable(QQuickCLItem *item)
+ : QQuickCLImageRunnable(item)
+ {
+ m_clProgram = item->buildProgram(openclSrc);
+ m_clKernel = clCreateKernel(m_clProgram, "Kernel", 0);
+ }
+
+ ~CLRunnable() {
+ clReleaseKernel(m_clKernel);
+ clReleaseProgram(m_clProgram);
+ }
+
+ void runKernel(cl_mem inImage, cl_mem outImage, const QSize &size) Q_DECL_OVERRIDE {
+ clSetKernelArg(m_clKernel, 0, sizeof(cl_mem), &inImage);
+ clSetKernelArg(m_clKernel, 1, sizeof(cl_mem), &outImage);
+ const size_t workSize[] = { size_t(size.width()), size_t(size.height()) };
+ clEnqueueNDRangeKernel(commandQueue(), m_clKernel, 2, 0, workSize, 0, 0, 0, 0);
+ }
+
+ private:
+ cl_program m_clProgram;
+ cl_kernel m_clKernel;
+ };
+
+ class CLItem : public QQuickCLItem
+ {
+ Q_OBJECT
+ Q_PROPERTY(QQuickItem *source READ source WRITE setSource)
+
+ public:
+ CLItem() : m_source(0) { }
+
+ QQuickCLRunnable *createCL() Q_DECL_OVERRIDE { return new CLRunnable(this); }
+
+ QQuickItem *source() const { return m_source; }
+ void setSource(QQuickItem *source) { m_source = source; update(); }
+
+ private:
+ QQuickItem *m_source;
+ };
+
+All the CL-GL interop, including the selection of the correct CL platform and
+device, is taken care of by the module. The QQuickCLItem - QQuickCLRunnable
+split ensures easy and safe CL and GL resource management even when threaded
+rendering is in use.
+
+Besides the minimal and lightweight framework, examples are provided for the
+following common use cases:
+
+ * GL texture -> GL texture (image processing, i.e. ShaderEffect but with CL)
+
+ * GL texture -> arbitrary data that gets visualized through Qt Quick
+ (f.ex. histogram)
+
+ * Non-GL data -> GL buffer with vertex data which is used in OpenGL rendering
+ without any additional readbacks or copies (e.g. particle simulation)
+
+The intention for these is not merely to test and demo the classes, but to serve
+as a reference for integrating Qt Quick and OpenCL and to help getting started
+with CL development.
diff --git a/config.tests/opencl/main.cpp b/config.tests/opencl/main.cpp
new file mode 100644
index 0000000..25bf33c
--- /dev/null
+++ b/config.tests/opencl/main.cpp
@@ -0,0 +1,54 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Quick CL module
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifdef Q_OS_OSX
+#include <OpenCL/opencl.h>
+#else
+#include <CL/opencl.h>
+#endif
+
+int main(int argc, char** argv)
+{
+ cl_uint size;
+ clGetPlatformIDs(0, 0, &size);
+ clCreateImage2D(0, CL_MEM_READ_WRITE, 0, 640, 480, 0, 0, 0);
+
+ cl_gl_object_type objectType = CL_GL_OBJECT_BUFFER;
+ clGetGLObjectInfo(0, &objectType, 0);
+ clEnqueueAcquireGLObjects(0, 0, 0, 0, 0, 0);
+
+ return 0;
+}
diff --git a/config.tests/opencl/opencl.pro b/config.tests/opencl/opencl.pro
new file mode 100644
index 0000000..3a6e9d4
--- /dev/null
+++ b/config.tests/opencl/opencl.pro
@@ -0,0 +1,12 @@
+SOURCES += main.cpp
+CONFIG -= qt
+CONFIG += console
+
+osx {
+ LIBS += -framework OpenCL
+ DEFINES += Q_OS_OSX
+}
+
+unix: !osx: LIBS += -lOpenCL
+
+win32:!winrt:!wince*: LIBS += -lopengl32 -lOpenCL
diff --git a/examples/examples.pro b/examples/examples.pro
new file mode 100644
index 0000000..8ec7ac4
--- /dev/null
+++ b/examples/examples.pro
@@ -0,0 +1,2 @@
+TEMPLATE = subdirs
+SUBDIRS += quickcl
diff --git a/examples/quickcl/histogram/histogram.cl b/examples/quickcl/histogram/histogram.cl
new file mode 100644
index 0000000..de97c2d
--- /dev/null
+++ b/examples/quickcl/histogram/histogram.cl
@@ -0,0 +1,57 @@
+// Based on https://code.google.com/p/opencl-book-samples/source/browse/trunk/src/Chapter_14/histogram
+
+#pragma OPENCL EXTENSION cl_khr_local_int32_base_atomics : enable
+
+constant sampler_t sampler = CLK_NORMALIZED_COORDS_FALSE | CLK_ADDRESS_CLAMP_TO_EDGE | CLK_FILTER_NEAREST;
+
+kernel void histogram(image2d_t img, int num_pixels_per_workitem, global uint *buf)
+{
+ int local_size = get_local_size(0) * get_local_size(1);
+ int item_offset = get_local_id(0) + get_local_id(1) * get_local_size(0);
+ local uint tmp[256];
+
+ int i = 0, j = 256;
+ do {
+ if (item_offset < j)
+ tmp[item_offset + i] = 0;
+ j -= local_size;
+ i += local_size;
+ } while (j > 0);
+
+ barrier(CLK_LOCAL_MEM_FENCE);
+
+ int x, image_width = get_image_width(img), image_height = get_image_height(img);
+ for (i = 0, x = get_global_id(0); i < num_pixels_per_workitem; ++i, x += get_global_size(0)) {
+ if (x < image_width && get_global_id(1) < image_height) {
+ float4 clr = read_imagef(img, sampler, (int2)(x, get_global_id(1)));
+ if (clr.w > 0.99f) {
+ float v = (clr.x + clr.y + clr.z) / 3.0f;
+ atom_inc(&tmp[convert_ushort_sat(min(v, 1.0f) * 255.0f)]);
+ }
+ }
+ }
+
+ barrier(CLK_LOCAL_MEM_FENCE);
+
+ int group_offset = (get_group_id(0) + get_group_id(1) * get_num_groups(0)) * 256;
+ i = 0;
+ j = 256;
+ do {
+ if (item_offset < j)
+ buf[group_offset + item_offset + i] = tmp[item_offset + i];
+ j -= local_size;
+ i += local_size;
+ } while (j > 0);
+}
+
+kernel void sum_histogram(global uint *buf, int num_groups, global uint *result)
+{
+ int idx = get_global_id(0) + get_group_id(0);
+ uint v = 0;
+ int group_offset = 0, n = num_groups;
+ while (--n >= 0) {
+ v += buf[group_offset + idx];
+ group_offset += 256;
+ }
+ result[idx] = v;
+}
diff --git a/examples/quickcl/histogram/histogram.cpp b/examples/quickcl/histogram/histogram.cpp
new file mode 100644
index 0000000..6ba0b65
--- /dev/null
+++ b/examples/quickcl/histogram/histogram.cpp
@@ -0,0 +1,318 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Quick CL module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in
+** the documentation and/or other materials provided with the
+** distribution.
+** * Neither the name of The Qt Company Ltd nor the names of its
+** contributors may be used to endorse or promote products derived
+** from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+// Demonstrates the texture-to-data use case where the results of the
+// computation are exposed to QML and visualized using Qt Quick items.
+
+#include <QGuiApplication>
+#include <QQuickView>
+#include <QQmlEngine>
+#include <QQuickCLItem>
+#include <QQuickCLImageRunnable>
+#include <QAbstractListModel>
+
+static bool profile = false;
+
+class HistogramModel : public QAbstractListModel
+{
+ Q_OBJECT
+
+public:
+ Q_INVOKABLE uint get(int idx) const { return h[idx]; }
+
+ void setHistogram(const QVector<uint> &histogram) {
+ emit beginResetModel();
+ h = histogram;
+ emit endResetModel();
+ }
+
+ int rowCount(const QModelIndex &) const Q_DECL_OVERRIDE {
+ return h.count();
+ }
+
+ QVariant data(const QModelIndex &index, int role) const Q_DECL_OVERRIDE {
+ if (index.isValid() && index.row() < h.count() && role == Qt::UserRole + 1)
+ return h[index.row()];
+ return QVariant();
+ }
+
+ QHash<int, QByteArray> roleNames() const Q_DECL_OVERRIDE {
+ QHash<int, QByteArray> roles;
+ roles[Qt::UserRole + 1] = "value";
+ return roles;
+ }
+
+private:
+ QVector<uint> h;
+};
+
+class CLRunnable;
+
+class CLItem : public QQuickCLItem
+{
+ Q_OBJECT
+ Q_PROPERTY(QQuickItem *source READ source WRITE setSource NOTIFY sourceChanged)
+ Q_PROPERTY(QAbstractItemModel *result READ result NOTIFY resultChanged)
+
+public:
+ CLItem() : m_source(0), m_result(new HistogramModel) { }
+ ~CLItem() { delete m_result; }
+
+ QQuickCLRunnable *createCL() Q_DECL_OVERRIDE;
+ void eventCompleted(cl_event event) Q_DECL_OVERRIDE;
+
+ QQuickItem *source() const { return m_source; }
+ void setSource(QQuickItem *source) {
+ if (m_source != source) {
+ m_source = source;
+ emit sourceChanged();
+ update();
+ }
+ }
+
+ QAbstractItemModel *result() const { return m_result; }
+ void updateResult(const QByteArray &histogram) {
+ const cl_uint *p = (const cl_uint *) histogram.constData();
+ QVector<uint> v(256);
+ for (int i = 0; i < v.count(); ++i)
+ v[i] = p[i];
+ m_result->setHistogram(v);
+ emit newResultsAvailable();
+ }
+
+signals:
+ void sourceChanged();
+ void resultChanged(); // not used as there is a single HistogramModel instance
+ void newResultsAvailable();
+
+private:
+ QQuickItem *m_source;
+ HistogramModel *m_result;
+ CLRunnable *m_runnable;
+};
+
+class CLRunnable : public QQuickCLImageRunnable
+{
+public:
+ CLRunnable(CLItem *item);
+ ~CLRunnable();
+ void runKernel(cl_mem inImage, cl_mem outImage, const QSize &size) Q_DECL_OVERRIDE;
+ QByteArray rawResult() const { return m_result; }
+ void resetPending() { m_resultPending.testAndSetOrdered(1, 0); }
+
+private:
+ CLItem *m_item;
+ cl_program m_program;
+ cl_kernel m_kernel;
+ cl_kernel m_sumKernel;
+ cl_mem m_resultBuf;
+ cl_mem m_sharedBuf;
+ cl_event m_doneEvent;
+ QByteArray m_result;
+ QAtomicInt m_resultPending;
+};
+
+CLRunnable::CLRunnable(CLItem *item)
+ : QQuickCLImageRunnable(item, NoOutputImage | (profile ? Profile : Flag(0))), // note the NoOutputImage flag
+ m_item(item),
+ m_program(0),
+ m_kernel(0),
+ m_sumKernel(0),
+ m_resultBuf(0),
+ m_sharedBuf(0),
+ m_doneEvent(0)
+{
+ QByteArray platform = m_item->platformName();
+ qDebug("Using platform %s", platform.constData());
+ m_program = m_item->buildProgramFromFile(QStringLiteral(":/histogram.cl"));
+ if (!m_program)
+ return;
+ cl_int err;
+ m_kernel = clCreateKernel(m_program, "histogram", &err);
+ if (!m_kernel) {
+ qWarning("Failed to create histogram OpenCL kernel: %d", err);
+ return;
+ }
+ m_sumKernel = clCreateKernel(m_program, "sum_histogram", &err);
+ if (!m_sumKernel) {
+ qWarning("Failed to create sum histogram OpenCL kernel: %d", err);
+ return;
+ }
+ m_resultBuf = clCreateBuffer(m_item->context(), CL_MEM_WRITE_ONLY, 256 * sizeof(cl_uint), 0, &err);
+ if (!m_resultBuf) {
+ qWarning("Failed to create OpenCL buffer: %d", err);
+ return;
+ }
+ m_result.resize(256 * sizeof(cl_uint));
+}
+
+CLRunnable::~CLRunnable()
+{
+ if (m_sharedBuf)
+ clReleaseMemObject(m_sharedBuf);
+ if (m_resultBuf)
+ clReleaseMemObject(m_resultBuf);
+ if (m_kernel)
+ clReleaseKernel(m_kernel);
+ if (m_sumKernel)
+ clReleaseKernel(m_sumKernel);
+ if (m_program)
+ clReleaseProgram(m_program);
+}
+
+class PendingGuard
+{
+public:
+ PendingGuard(CLRunnable *r) : r(r) { }
+ ~PendingGuard() { if (r) r->resetPending(); }
+ void take() { r = 0; }
+private:
+ CLRunnable *r;
+};
+
+#define DIV(a, b) ((a + b - 1) / b)
+
+void CLRunnable::runKernel(cl_mem inImage, cl_mem, const QSize &size)
+{
+ if (!m_program || !m_kernel || !m_sumKernel || !m_resultBuf)
+ return;
+
+ if (!m_resultPending.testAndSetOrdered(0, 1))
+ return;
+ PendingGuard pg(this);
+
+ if (profile)
+ qDebug("CL time: %f ms", elapsed());
+
+ const size_t group_size_x = 16;
+ const size_t group_size_y = 8;
+ const cl_int num_pixels_per_item = 32;
+ const size_t num_items_per_row = DIV(size.width(), num_pixels_per_item);
+ const size_t num_groups_x = DIV(num_items_per_row, group_size_x);
+ const size_t num_groups_y = DIV(size.height(), group_size_y);
+ const cl_int num_groups = cl_int(num_groups_x * num_groups_y);
+
+ const size_t localWorkSize[2] = { group_size_x, group_size_y };
+ const size_t globalWorkSize[2] = { localWorkSize[0] * num_groups_x, localWorkSize[1] * num_groups_y };
+
+ cl_int err;
+ if (!m_sharedBuf) {
+ const size_t sharedBufSize = num_groups * 256 * sizeof(cl_uint);
+ m_sharedBuf = clCreateBuffer(m_item->context(), CL_MEM_READ_WRITE, sharedBufSize, 0, &err);
+ if (!m_sharedBuf) {
+ qWarning("Failed to create shared buffer: %d", err);
+ return;
+ }
+ }
+
+ clSetKernelArg(m_kernel, 0, sizeof(cl_mem), &inImage);
+ clSetKernelArg(m_kernel, 1, sizeof(cl_int), &num_pixels_per_item);
+ clSetKernelArg(m_kernel, 2, sizeof(cl_mem), &m_sharedBuf);
+ err = clEnqueueNDRangeKernel(commandQueue(), m_kernel, 2, 0, globalWorkSize, localWorkSize, 0, 0, 0);
+ if (err != CL_SUCCESS) {
+ qWarning("Failed to enqueue kernel: %d", err);
+ return;
+ }
+
+ clSetKernelArg(m_sumKernel, 0, sizeof(cl_mem), &m_sharedBuf);
+ clSetKernelArg(m_sumKernel, 1, sizeof(cl_int), &num_groups);
+ clSetKernelArg(m_sumKernel, 2, sizeof(cl_mem), &m_resultBuf);
+ const size_t sumLocalWorkSize = 256;
+ const size_t sumGlobalWorkSize = 256;
+ err = clEnqueueNDRangeKernel(commandQueue(), m_sumKernel, 1, 0, &sumGlobalWorkSize, &sumLocalWorkSize, 0, 0, 0);
+ if (err != CL_SUCCESS) {
+ qWarning("Failed to enqueue sum kernel: %d", err);
+ return;
+ }
+
+ err = clEnqueueReadBuffer(commandQueue(), m_resultBuf, CL_FALSE, 0, m_result.size(), m_result.data(), 0, 0, &m_doneEvent);
+ if (err != CL_SUCCESS) {
+ qWarning("Failed to enqueue read buffer: %d", err);
+ return;
+ }
+
+ pg.take();
+ m_item->watchEvent(m_doneEvent);
+}
+
+QQuickCLRunnable *CLItem::createCL()
+{
+ m_runnable = new CLRunnable(this);
+ return m_runnable;
+}
+
+void CLItem::eventCompleted(cl_event event)
+{
+ // We are on the gui thread here.
+ updateResult(m_runnable->rawResult());
+
+ clReleaseEvent(event);
+ m_runnable->resetPending();
+
+ // Request an update, which will eventually also lead to issuing the next
+ // round of computation.
+ scheduleUpdate();
+}
+
+int main(int argc, char **argv)
+{
+#ifdef Q_OS_WIN
+ QCoreApplication::setAttribute(Qt::AA_UseDesktopOpenGL);
+#endif
+ QGuiApplication app(argc, argv);
+
+ if (app.arguments().contains(QStringLiteral("--profile")))
+ profile = true;
+
+ QQuickView view;
+ QObject::connect(view.engine(), SIGNAL(quit()), &app, SLOT(quit()));
+
+ qmlRegisterType<CLItem>("quickcl.qt.io", 1, 0, "CLItem");
+
+ view.setSource(QUrl("qrc:///qml/histogram.qml"));
+ view.setResizeMode(QQuickView::SizeRootObjectToView);
+
+ view.resize(1200, 600);
+ view.show();
+
+ return app.exec();
+}
+
+#include "histogram.moc"
diff --git a/examples/quickcl/histogram/histogram.pro b/examples/quickcl/histogram/histogram.pro
new file mode 100644
index 0000000..f759f6a
--- /dev/null
+++ b/examples/quickcl/histogram/histogram.pro
@@ -0,0 +1,15 @@
+TEMPLATE = app
+
+QT += qml quick quickcl
+
+SOURCES = histogram.cpp
+
+RESOURCES = histogram.qrc
+
+OTHER_FILES = $$PWD/qml/histogram.qml
+
+osx {
+ LIBS += -framework OpenCL
+} else {
+ LIBS += -lOpenCL
+}
diff --git a/examples/quickcl/histogram/histogram.qrc b/examples/quickcl/histogram/histogram.qrc
new file mode 100644
index 0000000..8061a8e
--- /dev/null
+++ b/examples/quickcl/histogram/histogram.qrc
@@ -0,0 +1,8 @@
+<RCC>
+ <qresource prefix="/">
+ <file>qml/histogram.qml</file>
+ <file>qml/image.png</file>
+ <file>qml/qt.png</file>
+ <file>histogram.cl</file>
+ </qresource>
+</RCC>
diff --git a/examples/quickcl/histogram/qml/histogram.qml b/examples/quickcl/histogram/qml/histogram.qml
new file mode 100644
index 0000000..f0fade9
--- /dev/null
+++ b/examples/quickcl/histogram/qml/histogram.qml
@@ -0,0 +1,140 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Quick CL module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in
+** the documentation and/or other materials provided with the
+** distribution.
+** * Neither the name of The Qt Company Ltd nor the names of its
+** contributors may be used to endorse or promote products derived
+** from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.0
+import QtQuick.Controls 1.0
+import quickcl.qt.io 1.0
+
+Item {
+ Rectangle {
+ id: orig
+ width: parent.width / 2 - 4
+ height: parent.height
+ border.color: "magenta"
+ border.width: 4
+
+ Item {
+ id: src
+ anchors.fill: parent
+ layer.enabled: true
+ Image {
+ anchors.fill: parent
+ anchors.margins: 4
+ source: "image.png"
+ }
+ Image {
+ source: "qt.png"
+ width: 100
+ height: 100
+ smooth: true
+ SequentialAnimation on scale {
+ loops: Animation.Infinite
+ NumberAnimation { from: 1; to: 8; duration: 2000; easing.type: Easing.OutBounce }
+ PauseAnimation { duration: 2000 }
+ NumberAnimation { from: 8; to: 1; duration: 2000; easing.type: Easing.OutBounce }
+ PauseAnimation { duration: 2000 }
+ }
+ NumberAnimation on rotation { from: 0; to: 360; duration: 2000; loops: Animation.Infinite }
+ anchors.centerIn: parent
+ }
+ }
+ }
+
+ Rectangle {
+ width: parent.width / 2 - 4
+ height: parent.height
+ anchors.left: orig.right
+ anchors.leftMargin: 4
+ border.color: "magenta"
+ border.width: 4
+
+ CLItem {
+ id: clItem
+ source: src
+ anchors.fill: parent
+ anchors.margins: 4
+ onNewResultsAvailable: {
+ var maxValue = rectRoot.height - topText.y - topText.height;
+ for (var i = 0; i < 256; ++i)
+ rep.itemAt(i).height = Math.max(1, Math.min(result.get(i) / scaleFactor.value, maxValue))
+ }
+ Item {
+ anchors.fill: parent
+ Row {
+ anchors.fill: parent
+ id: rectRoot
+ Repeater {
+ id: rep
+ // It might be tempting to use clItem.result as the
+ // model. This would however result in a serious
+ // slowdown due to dropping and adding 256 new
+ // rectangles on every update.
+ model: 256
+ Rectangle {
+ width: parent ? parent.width / rep.count : 0
+ height: 0
+ y: parent ? parent.height - height : 0
+ color: "black"
+ }
+ }
+ }
+ }
+ }
+ Text {
+ id: topText
+ font.pointSize: 16
+ text: "Histogram calculated on the GPU with OpenCL (scale: " + Math.round(scaleFactor.value) + ")"
+ color: "green"
+ x: 10
+ y: 10
+ }
+ Slider {
+ id: scaleFactor
+ x: 10
+ anchors.top: topText.bottom
+ anchors.bottom: parent.bottom
+ anchors.margins: 10
+ minimumValue: 1
+ maximumValue: 1024
+ value: 8
+ orientation: Qt.Vertical
+ }
+ }
+}
diff --git a/examples/quickcl/histogram/qml/image.png b/examples/quickcl/histogram/qml/image.png
new file mode 100644
index 0000000..8339210
--- /dev/null
+++ b/examples/quickcl/histogram/qml/image.png
Binary files differ
diff --git a/examples/quickcl/histogram/qml/qt.png b/examples/quickcl/histogram/qml/qt.png
new file mode 100644
index 0000000..7d3e97e
--- /dev/null
+++ b/examples/quickcl/histogram/qml/qt.png
Binary files differ
diff --git a/examples/quickcl/imageprocess/imageprocess.cpp b/examples/quickcl/imageprocess/imageprocess.cpp
new file mode 100644
index 0000000..9738ea4
--- /dev/null
+++ b/examples/quickcl/imageprocess/imageprocess.cpp
@@ -0,0 +1,187 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Quick CL module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in
+** the documentation and/or other materials provided with the
+** distribution.
+** * Neither the name of The Qt Company Ltd nor the names of its
+** contributors may be used to endorse or promote products derived
+** from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+// Demonstrates the texture-to-texture use case. This is basically an
+// OpenCL-based equivalent to ShaderEffect items.
+
+#include <QGuiApplication>
+#include <QQuickView>
+#include <QQmlEngine>
+#include <QQuickCLItem>
+#include <QQuickCLImageRunnable>
+
+static bool profile = false;
+
+class CLItem : public QQuickCLItem
+{
+ Q_OBJECT
+ Q_PROPERTY(QQuickItem *source READ source WRITE setSource NOTIFY sourceChanged)
+ Q_PROPERTY(qreal factor READ factor WRITE setFactor NOTIFY factorChanged)
+
+public:
+ CLItem() : m_source(0), m_factor(1) { }
+
+ QQuickCLRunnable *createCL() Q_DECL_OVERRIDE;
+
+ QQuickItem *source() const { return m_source; }
+ void setSource(QQuickItem *source) {
+ if (m_source != source) {
+ m_source = source;
+ emit sourceChanged();
+ update();
+ }
+ }
+
+ qreal factor() const { return m_factor; }
+ void setFactor(qreal v) {
+ if (m_factor != v) {
+ m_factor = v;
+ emit factorChanged();
+ update();
+ }
+ }
+
+signals:
+ void sourceChanged();
+ void factorChanged();
+
+private:
+ QQuickItem *m_source;
+ qreal m_factor;
+};
+
+class CLRunnable : public QQuickCLImageRunnable
+{
+public:
+ CLRunnable(CLItem *item);
+ ~CLRunnable();
+ void runKernel(cl_mem inImage, cl_mem outImage, const QSize &size) Q_DECL_OVERRIDE;
+
+private:
+ CLItem *m_item;
+ cl_program m_clProgram;
+ cl_kernel m_clKernel;
+};
+
+QQuickCLRunnable *CLItem::createCL()
+{
+ return new CLRunnable(this);
+}
+
+static const char *openclSrc =
+ "__constant sampler_t sampler = CLK_NORMALIZED_COORDS_FALSE | CLK_ADDRESS_CLAMP_TO_EDGE | CLK_FILTER_NEAREST;\n"
+ "__kernel void Emboss(__read_only image2d_t imgIn, __write_only image2d_t imgOut, float factor) {\n"
+ " const int2 pos = { get_global_id(0), get_global_id(1) };\n"
+ " float4 diff = read_imagef(imgIn, sampler, pos + (int2)(1,1)) - read_imagef(imgIn, sampler, pos - (int2)(1,1));\n"
+ " float color = (diff.x + diff.y + diff.z) / factor + 0.5f;\n"
+ " write_imagef(imgOut, pos, (float4)(color, color, color, 1.0f));\n"
+ "}\n";
+
+CLRunnable::CLRunnable(CLItem *item)
+ : QQuickCLImageRunnable(item, profile ? Profile : Flag(0)),
+ m_item(item),
+ m_clProgram(0),
+ m_clKernel(0)
+{
+ QByteArray platform = m_item->platformName();
+ qDebug("Using platform %s", platform.constData());
+ m_clProgram = m_item->buildProgram(openclSrc);
+ if (!m_clProgram)
+ return;
+ cl_int err;
+ m_clKernel = clCreateKernel(m_clProgram, "Emboss", &err);
+ if (!m_clKernel) {
+ qWarning("Failed to create emboss OpenCL kernel: %d", err);
+ return;
+ }
+}
+
+CLRunnable::~CLRunnable()
+{
+ if (m_clKernel)
+ clReleaseKernel(m_clKernel);
+ if (m_clProgram)
+ clReleaseProgram(m_clProgram);
+}
+
+void CLRunnable::runKernel(cl_mem inImage, cl_mem outImage, const QSize &size)
+{
+ if (!m_clProgram)
+ return;
+
+ if (profile)
+ qDebug("CL time: %f", elapsed());
+
+ clSetKernelArg(m_clKernel, 0, sizeof(cl_mem), &inImage);
+ clSetKernelArg(m_clKernel, 1, sizeof(cl_mem), &outImage);
+ const cl_float factor = m_item->factor();
+ clSetKernelArg(m_clKernel, 2, sizeof(cl_float), &factor);
+
+ const size_t workSize[] = { size_t(size.width()), size_t(size.height()) };
+ cl_int err = clEnqueueNDRangeKernel(commandQueue(), m_clKernel, 2, 0, workSize, 0, 0, 0, 0);
+ if (err != CL_SUCCESS)
+ qWarning("Failed to enqueue kernel: %d", err);
+}
+
+int main(int argc, char **argv)
+{
+#ifdef Q_OS_WIN
+ QCoreApplication::setAttribute(Qt::AA_UseDesktopOpenGL);
+#endif
+ QGuiApplication app(argc, argv);
+
+ if (app.arguments().contains(QStringLiteral("--profile")))
+ profile = true;
+
+ QQuickView view;
+ QObject::connect(view.engine(), SIGNAL(quit()), &app, SLOT(quit()));
+
+ qmlRegisterType<CLItem>("quickcl.qt.io", 1, 0, "CLItem");
+
+ view.setSource(QUrl("qrc:///qml/imageprocess.qml"));
+ view.setResizeMode(QQuickView::SizeRootObjectToView);
+
+ view.resize(1200, 600);
+ view.show();
+
+ return app.exec();
+}
+
+#include "imageprocess.moc"
diff --git a/examples/quickcl/imageprocess/imageprocess.pro b/examples/quickcl/imageprocess/imageprocess.pro
new file mode 100644
index 0000000..c7825a2
--- /dev/null
+++ b/examples/quickcl/imageprocess/imageprocess.pro
@@ -0,0 +1,15 @@
+TEMPLATE = app
+
+QT += qml quick quickcl
+
+SOURCES = imageprocess.cpp
+
+RESOURCES = imageprocess.qrc
+
+OTHER_FILES = $$PWD/qml/imageprocess.qml
+
+osx {
+ LIBS += -framework OpenCL
+} else {
+ LIBS += -lOpenCL
+}
diff --git a/examples/quickcl/imageprocess/imageprocess.qrc b/examples/quickcl/imageprocess/imageprocess.qrc
new file mode 100644
index 0000000..ecf25e7
--- /dev/null
+++ b/examples/quickcl/imageprocess/imageprocess.qrc
@@ -0,0 +1,6 @@
+<RCC>
+ <qresource prefix="/">
+ <file>qml/imageprocess.qml</file>
+ <file>qml/image.png</file>
+ </qresource>
+</RCC>
diff --git a/examples/quickcl/imageprocess/qml/image.png b/examples/quickcl/imageprocess/qml/image.png
new file mode 100644
index 0000000..f8ff553
--- /dev/null
+++ b/examples/quickcl/imageprocess/qml/image.png
Binary files differ
diff --git a/examples/quickcl/imageprocess/qml/imageprocess.qml b/examples/quickcl/imageprocess/qml/imageprocess.qml
new file mode 100644
index 0000000..99526ee
--- /dev/null
+++ b/examples/quickcl/imageprocess/qml/imageprocess.qml
@@ -0,0 +1,129 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Quick CL module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in
+** the documentation and/or other materials provided with the
+** distribution.
+** * Neither the name of The Qt Company Ltd nor the names of its
+** contributors may be used to endorse or promote products derived
+** from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.0
+import QtQuick.Controls 1.0
+import quickcl.qt.io 1.0
+
+Item {
+ Rectangle {
+ id: orig
+ width: parent.width / 2 - 4
+ height: parent.height
+ border.color: "magenta"
+ border.width: 4
+
+ Item {
+ id: srcSubTree
+ anchors.fill: parent
+ layer.enabled: true
+ visible: !cbHide.checked
+ Image {
+ id: srcImage
+ anchors.fill: parent
+ anchors.margins: 4
+ source: "image.png"
+ }
+ Rectangle {
+ width: 100
+ height: 100
+ color: "red"
+ NumberAnimation on rotation { from: 0; to: 360; duration: 2000; loops: Animation.Infinite; }
+ anchors.right: parent.right
+ anchors.bottom: parent.bottom
+ anchors.margins: 20
+ }
+ Column {
+ spacing: 10
+ anchors.centerIn: parent
+ CheckBox {
+ id: cbLayer
+ text: "Apply to entire sub-tree (FBO)"
+ checked: false
+ onCheckedChanged: clItem.source = checked ? srcSubTree : srcImage
+ }
+ CheckBox {
+ id: cbHide
+ text: "Hide source"
+ checked: false
+ enabled: cbLayer.checked
+ }
+ }
+ }
+ Button {
+ text: "Make visible"
+ visible: cbHide.checked
+ onClicked: cbHide.checked = false
+ anchors.centerIn: parent
+ }
+ }
+
+ Rectangle {
+ width: parent.width / 2 - 4
+ height: parent.height
+ anchors.left: orig.right
+ anchors.leftMargin: 4
+ border.color: "magenta"
+ border.width: 4
+
+ CLItem {
+ id: clItem
+ anchors.fill: parent
+ anchors.margins: 4
+ source: srcImage
+ factor: 1
+ NumberAnimation on factor {
+ from: 1
+ to: 20
+ duration: 8000
+ loops: Animation.Infinite
+ }
+ }
+
+ Text {
+ x: 10
+ y: 10
+ text: "Emboss factor: " + Math.round(clItem.factor) + "\nSource is "
+ + (clItem.source === srcImage ? "image" : "layered sub-tree")
+ font.pointSize: 16
+ color: "green"
+ }
+ }
+}
diff --git a/examples/quickcl/particles/particles.cl b/examples/quickcl/particles/particles.cl
new file mode 100644
index 0000000..47a8013
--- /dev/null
+++ b/examples/quickcl/particles/particles.cl
@@ -0,0 +1,13 @@
+kernel void updateParticles(global float *buf, float t, float dt, global float *info)
+{
+ int idx = get_global_id(0) * 2;
+ if (t < 0.000001f) {
+ buf[idx] = -1.0f;
+ buf[idx + 1] = -1.0f;
+ } else {
+ float2 dir = (float2)(info[idx], info[idx + 1]);
+ float2 speed = (float2)(info[idx + 2], info[idx + 3]);
+ buf[idx] += dir.x * dt * speed.x;
+ buf[idx + 1] += dir.y * dt * speed.y;
+ }
+}
diff --git a/examples/quickcl/particles/particles.cpp b/examples/quickcl/particles/particles.cpp
new file mode 100644
index 0000000..917baeb
--- /dev/null
+++ b/examples/quickcl/particles/particles.cpp
@@ -0,0 +1,448 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Quick CL module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in
+** the documentation and/or other materials provided with the
+** distribution.
+** * Neither the name of The Qt Company Ltd nor the names of its
+** contributors may be used to endorse or promote products derived
+** from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+// Demonstrates generating vertex data (GL buffer) from OpenCL.
+
+#include <QGuiApplication>
+#include <QQuickView>
+#include <QQmlEngine>
+#include <QSGSimpleTextureNode>
+#include <QOpenGLFramebufferObject>
+#include <QOpenGLFunctions>
+#include <QOpenGLShaderProgram>
+#include <QQuickCLItem>
+#include <QQuickCLRunnable>
+#include <time.h>
+
+const int PARTICLE_COUNT = 1024;
+
+class CLItem;
+
+// CLNode visualizes the results of CLRunnable. This is done by rendering via a
+// FBO since we will have the data (the output from the CL kernel) on the GPU
+// already so QSGGeometryNode and friends are not suitable for us.
+//
+// If mixing with other Quick items is not needed, this can be simplified to
+// render straight to the window in a slot connected directly to the
+// beforeRendering() or afterRendering() signals of the QQuickWindow.
+//
+class CLNode : public QObject, public QSGSimpleTextureNode
+{
+ Q_OBJECT
+
+public:
+ CLNode(CLItem *item) : m_item(item), m_fbo(0), m_buf(0), m_clBuf(0), m_program(0) { }
+
+ ~CLNode() {
+ delete m_program;
+ delete m_fbo;
+ if (m_clBuf)
+ clReleaseMemObject(m_clBuf);
+ QOpenGLFunctions *f = QOpenGLContext::currentContext()->functions();
+ if (m_buf)
+ f->glDeleteBuffers(1, &m_buf);
+ }
+
+public slots:
+ void render();
+
+public:
+ CLItem *m_item;
+ QOpenGLFramebufferObject *m_fbo;
+ GLuint m_buf;
+ cl_mem m_clBuf;
+ QAtomicInt m_renderPending;
+ QOpenGLShaderProgram *m_program;
+ int m_tUniformLoc;
+};
+
+// The CLRunnable lives on the render thread, like the CLNode.
+class CLRunnable : public QObject, public QQuickCLRunnable
+{
+ Q_OBJECT
+
+public:
+ CLRunnable(CLItem *item);
+ ~CLRunnable();
+ QSGNode *update(QSGNode *node) Q_DECL_OVERRIDE;
+ CLNode *node() const { return m_node; }
+ void resetComputeInProgress() { m_computeInProgress.testAndSetOrdered(1, 0); }
+
+public slots:
+ void handleScreenChange();
+
+private:
+ static void CL_CALLBACK computeDoneCallback(cl_event event, cl_int event_command_exec_status, void *user_data);
+ void computeDone();
+ QSize itemSize() const;
+ void createBuffer();
+ void createFbo();
+
+ CLItem *m_item;
+ CLNode *m_node;
+ bool m_recreateFbo;
+ cl_command_queue m_queue;
+ cl_program m_program;
+ cl_kernel m_kernel;
+ cl_event m_computeDoneEvent;
+ QSize m_itemSize;
+ bool m_needsExplicitSync;
+ QAtomicInt m_computeInProgress;
+ qreal m_lastT;
+ cl_mem m_clBufParticleInfo;
+};
+
+class CLItem : public QQuickCLItem
+{
+ Q_OBJECT
+ Q_PROPERTY(qreal t READ t WRITE setT NOTIFY tChanged)
+
+public:
+ CLItem() : m_t(0) { }
+
+ QQuickCLRunnable *createCL() Q_DECL_OVERRIDE;
+ void eventCompleted(cl_event event) Q_DECL_OVERRIDE;
+
+ qreal t() const { return m_t; }
+ void setT(qreal v) {
+ if (m_t != v) {
+ m_t = v;
+ emit tChanged();
+ update();
+ }
+ }
+
+signals:
+ void tChanged();
+
+private:
+ qreal m_t;
+ CLRunnable *m_runnable;
+};
+
+static const char *vertexShaderSource =
+ "attribute vec2 vertex;\n"
+ "void main() {\n"
+ " gl_PointSize = 4.0;\n"
+ " gl_Position = vec4(vertex.xy, 0.0, 1.0);\n"
+ "}\n";
+
+static const char *fragmentShaderSource =
+ "uniform highp float t;\n"
+ "void main() {\n"
+ " gl_FragColor = vec4(1.0, 1.0, 1.0, 1.0 - t);\n"
+ "}\n";
+
+void CLNode::render()
+{
+ if (!m_renderPending.testAndSetOrdered(1, 0))
+ return;
+
+ m_fbo->bind();
+ QOpenGLContext *ctx = QOpenGLContext::currentContext();
+ QOpenGLFunctions *f = ctx->functions();
+
+ if (!m_program) {
+ m_program = new QOpenGLShaderProgram;
+ m_program->addShaderFromSourceCode(QOpenGLShader::Vertex, vertexShaderSource);
+ m_program->addShaderFromSourceCode(QOpenGLShader::Fragment, fragmentShaderSource);
+ m_program->link();
+ m_tUniformLoc = m_program->uniformLocation("t");
+
+#ifndef QT_OPENGL_ES_2
+ if (!ctx->isOpenGLES()) {
+ f->glEnable(GL_POINT_SPRITE);
+ f->glEnable(GL_VERTEX_PROGRAM_POINT_SIZE);
+ }
+#endif
+ }
+
+ f->glEnable(GL_BLEND);
+ f->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+ f->glViewport(0, 0, m_fbo->width(), m_fbo->height());
+ f->glClearColor(0, 0, 0.25f, 1);
+ f->glClear(GL_COLOR_BUFFER_BIT);
+
+ m_program->bind();
+ m_program->setUniformValue(m_tUniformLoc, GLfloat(m_item->t()));
+
+ f->glBindBuffer(GL_ARRAY_BUFFER, m_buf);
+ f->glEnableVertexAttribArray(0);
+ f->glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, 0);
+
+ f->glDrawArrays(GL_POINTS, 0, PARTICLE_COUNT);
+}
+
+CLRunnable::CLRunnable(CLItem *item)
+ : m_item(item),
+ m_node(0),
+ m_recreateFbo(false),
+ m_program(0),
+ m_kernel(0),
+ m_computeDoneEvent(0),
+ m_lastT(-1),
+ m_clBufParticleInfo(0)
+{
+ qDebug() << "Platform" << m_item->platformName() << "Device extensions" << m_item->deviceExtensions();
+ cl_int err;
+
+ m_queue = clCreateCommandQueue(m_item->context(), m_item->device(), 0, &err);
+ if (!m_queue) {
+ qWarning("Failed to create OpenCL command queue: %d", err);
+ return;
+ }
+
+ m_program = m_item->buildProgramFromFile(QStringLiteral(":/particles.cl"));
+ if (!m_program)
+ return;
+ m_kernel = clCreateKernel(m_program, "updateParticles", &err);
+ if (!m_kernel) {
+ qWarning("Failed to create particles OpenCL kernel: %d", err);
+ return;
+ }
+
+ m_needsExplicitSync = !m_item->deviceExtensions().contains(QByteArrayLiteral("cl_khr_gl_event"));
+
+ // m_clBufParticleInfo is an ordinary OpenCL buffer.
+ size_t velBufSize = PARTICLE_COUNT * sizeof(cl_float) * 4;
+ m_clBufParticleInfo = clCreateBuffer(m_item->context(), CL_MEM_READ_ONLY | CL_MEM_ALLOC_HOST_PTR, velBufSize, 0, &err);
+ if (!m_clBufParticleInfo) {
+ qWarning("Failed to create CL buffer: %d", err);
+ return;
+ }
+ cl_float *ptr = (cl_float *) clEnqueueMapBuffer(m_queue, m_clBufParticleInfo, CL_TRUE, CL_MAP_WRITE, 0, velBufSize, 0, 0, 0, &err);
+ if (!ptr) {
+ qWarning("Failed to map CL buffer: %d", err);
+ return;
+ }
+ cl_float *p = ptr;
+ for (int i = 0; i < PARTICLE_COUNT; ++i) {
+ // Direction
+ *p++ = ((qrand() % 1000) + 1) / 1000.0f;
+ *p++ = ((qrand() % 1000) + 1) / 1000.0f;
+ // Speed
+ *p++ = ((qrand() % 1000) + 1) / 100.0f;
+ *p++ = ((qrand() % 1000) + 1) / 100.0f;
+ }
+ clEnqueueUnmapMemObject(m_queue, m_clBufParticleInfo, ptr, 0, 0, 0);
+}
+
+CLRunnable::~CLRunnable()
+{
+ if (m_clBufParticleInfo)
+ clReleaseMemObject(m_clBufParticleInfo);
+ if (m_kernel)
+ clReleaseKernel(m_kernel);
+ if (m_program)
+ clReleaseProgram(m_program);
+ if (m_queue)
+ clReleaseCommandQueue(m_queue);
+}
+
+void CLRunnable::createBuffer()
+{
+ QOpenGLFunctions *f = QOpenGLContext::currentContext()->functions();
+
+ // m_buf is an OpenGL buffer that is read/written from OpenCL and then used
+ // as the input to the OpenGL vertex shader.
+ GLuint buf;
+ f->glGenBuffers(1, &buf);
+ f->glBindBuffer(GL_ARRAY_BUFFER, buf);
+ f->glBufferData(GL_ARRAY_BUFFER, PARTICLE_COUNT * sizeof(GLfloat) * 2, 0, GL_DYNAMIC_DRAW);
+ if (m_node->m_buf)
+ f->glDeleteBuffers(1, &m_node->m_buf);
+ m_node->m_buf = buf;
+
+ if (m_node->m_clBuf)
+ clReleaseMemObject(m_node->m_clBuf);
+ cl_int err;
+ m_node->m_clBuf = clCreateFromGLBuffer(m_item->context(), CL_MEM_READ_WRITE, buf, &err);
+ if (!m_node->m_clBuf)
+ qWarning("Failed to create OpenCL object for OpenGL buffer: %d", err);
+}
+
+QSize CLRunnable::itemSize() const
+{
+ QSize size(m_item->width(), m_item->height());
+ size *= m_item->window()->effectiveDevicePixelRatio();
+ return size;
+}
+
+void CLRunnable::createFbo()
+{
+ QOpenGLFramebufferObject *fbo = new QOpenGLFramebufferObject(itemSize());
+ m_node->setTexture(m_item->window()->createTextureFromId(fbo->texture(), fbo->size(),
+ QQuickWindow::TextureHasAlphaChannel));
+ delete m_node->m_fbo;
+ m_node->m_fbo = fbo;
+ m_node->m_renderPending.testAndSetOrdered(0, 1);
+}
+
+void CLRunnable::handleScreenChange()
+{
+ // We could have been moved from a high to low dpi screen or vice versa.
+ m_recreateFbo = true;
+ m_item->scheduleUpdate();
+}
+
+class StateGuard
+{
+public:
+ StateGuard(CLRunnable *r) : r(r) { }
+ ~StateGuard() { if (r) r->resetComputeInProgress(); }
+ void release() { r = 0; }
+private:
+ CLRunnable *r;
+};
+
+QSGNode *CLRunnable::update(QSGNode *node)
+{
+ if (!m_queue || !m_program || !m_kernel || !m_clBufParticleInfo)
+ return 0;
+
+ if (!node) {
+ m_node = new CLNode(m_item);
+ m_node->setFiltering(QSGTexture::Linear);
+ QObject::connect(m_item->window(), SIGNAL(beforeRendering()), m_node, SLOT(render()));
+ QObject::connect(m_item->window(), SIGNAL(screenChanged(QScreen*)), this, SLOT(handleScreenChange()));
+ node = m_node;
+ createBuffer();
+ }
+ if (m_itemSize != itemSize()) {
+ m_itemSize = itemSize();
+ m_recreateFbo = true;
+ }
+ if (m_recreateFbo) {
+ m_recreateFbo = false;
+ createFbo();
+ }
+ m_node->setRect(0, 0, m_item->width(), m_item->height());
+ if (m_node->m_renderPending)
+ m_node->markDirty(QSGNode::DirtyMaterial);
+
+ // Animation is based on the time property. No need to enqueue anything if
+ // the value has not yet changed.
+ if (m_lastT == m_item->t())
+ return node;
+
+ if (!m_computeInProgress.testAndSetOrdered(0, 1))
+ return node;
+
+ StateGuard sg(this);
+
+ cl_float dt = m_item->t() - m_lastT;
+ m_lastT = m_item->t();
+
+ if (m_needsExplicitSync)
+ QOpenGLContext::currentContext()->functions()->glFinish();
+
+ cl_int err = clEnqueueAcquireGLObjects(m_queue, 1, &m_node->m_clBuf, 0, 0, 0);
+ if (err != CL_SUCCESS) {
+ qWarning("Failed to queue acquiring the GL buffer: %d", err);
+ return node;
+ }
+
+ clSetKernelArg(m_kernel, 0, sizeof(cl_mem), &m_node->m_clBuf);
+ cl_float t = m_item->t();
+ clSetKernelArg(m_kernel, 1, sizeof(cl_float), &t);
+ clSetKernelArg(m_kernel, 2, sizeof(cl_float), &dt);
+ clSetKernelArg(m_kernel, 3, sizeof(cl_mem), &m_clBufParticleInfo);
+ size_t globalWorkSize = PARTICLE_COUNT;
+ err = clEnqueueNDRangeKernel(m_queue, m_kernel, 1, 0, &globalWorkSize, 0, 0, 0, 0);
+ if (err != CL_SUCCESS) {
+ qWarning("Failed to enqueue kernel: %d", err);
+ return node;
+ }
+
+ err = clEnqueueReleaseGLObjects(m_queue, 1, &m_node->m_clBuf, 0, 0, &m_computeDoneEvent);
+ if (err != CL_SUCCESS) {
+ qWarning("Failed to queue releasing the GL buffer: %d", err);
+ return node;
+ }
+
+ sg.release();
+ m_item->watchEvent(m_computeDoneEvent);
+
+ if (m_needsExplicitSync)
+ clFinish(m_queue);
+
+ return node;
+}
+
+void CLItem::eventCompleted(cl_event event)
+{
+ clReleaseEvent(event);
+ m_runnable->resetComputeInProgress();
+ // Tell the node that the FBO's contents is stale and needs updating.
+ m_runnable->node()->m_renderPending.testAndSetOrdered(0, 1);
+ scheduleUpdate();
+}
+
+QQuickCLRunnable *CLItem::createCL()
+{
+ m_runnable = new CLRunnable(this);
+ return m_runnable;
+}
+
+int main(int argc, char **argv)
+{
+#ifdef Q_OS_WIN
+ QCoreApplication::setAttribute(Qt::AA_UseDesktopOpenGL);
+#endif
+ QGuiApplication app(argc, argv);
+
+ qsrand(time(0));
+
+ QQuickView view;
+ QObject::connect(view.engine(), SIGNAL(quit()), &app, SLOT(quit()));
+
+ qmlRegisterType<CLItem>("quickcl.qt.io", 1, 0, "CLItem");
+
+ view.setSource(QUrl("qrc:///qml/particles.qml"));
+ view.setResizeMode(QQuickView::SizeRootObjectToView);
+
+ view.resize(1200, 600);
+ view.show();
+
+ return app.exec();
+}
+
+#include "particles.moc"
diff --git a/examples/quickcl/particles/particles.pro b/examples/quickcl/particles/particles.pro
new file mode 100644
index 0000000..74050e1
--- /dev/null
+++ b/examples/quickcl/particles/particles.pro
@@ -0,0 +1,15 @@
+TEMPLATE = app
+
+QT += qml quick quickcl
+
+SOURCES = particles.cpp
+
+RESOURCES = particles.qrc
+
+OTHER_FILES = $$PWD/qml/particles.qml
+
+osx {
+ LIBS += -framework OpenCL
+} else {
+ LIBS += -lOpenCL
+}
diff --git a/examples/quickcl/particles/particles.qrc b/examples/quickcl/particles/particles.qrc
new file mode 100644
index 0000000..630169c
--- /dev/null
+++ b/examples/quickcl/particles/particles.qrc
@@ -0,0 +1,6 @@
+<RCC>
+ <qresource prefix="/">
+ <file>qml/particles.qml</file>
+ <file>particles.cl</file>
+ </qresource>
+</RCC>
diff --git a/examples/quickcl/particles/qml/particles.qml b/examples/quickcl/particles/qml/particles.qml
new file mode 100644
index 0000000..9e872e5
--- /dev/null
+++ b/examples/quickcl/particles/qml/particles.qml
@@ -0,0 +1,101 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Quick CL module
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in
+** the documentation and/or other materials provided with the
+** distribution.
+** * Neither the name of The Qt Company Ltd nor the names of its
+** contributors may be used to endorse or promote products derived
+** from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.0
+import QtQuick.Controls 1.0
+import quickcl.qt.io 1.0
+
+Rectangle {
+ gradient: Gradient {
+ GradientStop { position: 0; color: "steelblue" }
+ GradientStop { position: 1; color: "black" }
+ }
+ Text {
+ text: "Yes, it's a QQuickItem"
+ x: 10
+ y: 10
+ color: "yellow"
+ }
+ CLItem {
+ id: clItem
+ anchors.fill: parent
+ NumberAnimation on t {
+ from: 0.0
+ to: 1.0
+ duration: 10000
+ id: particleAnim
+ running: false
+ }
+ transform: [
+ Rotation { id: rotation; axis.x: 0; axis.z: 0; axis.y: 1; angle: 0; origin.x: width / 2; origin.y: height / 2; },
+ Translate { id: txOut; x: -width / 2; y: -height / 2 },
+ Scale { id: scale; },
+ Translate { id: txIn; x: width / 2; y: height / 2 }
+ ]
+ // animation borrowed from textureinsgnode
+ SequentialAnimation {
+ PauseAnimation { duration: 2000 }
+ ParallelAnimation {
+ NumberAnimation { target: scale; property: "xScale"; to: 0.6; duration: 1000; easing.type: Easing.InOutBack }
+ NumberAnimation { target: scale; property: "yScale"; to: 0.6; duration: 1000; easing.type: Easing.InOutBack }
+ }
+ NumberAnimation { target: rotation; property: "angle"; to: 80; duration: 1000; easing.type: Easing.InOutCubic }
+ NumberAnimation { target: rotation; property: "angle"; to: -80; duration: 1000; easing.type: Easing.InOutCubic }
+ NumberAnimation { target: rotation; property: "angle"; to: 0; duration: 1000; easing.type: Easing.InOutCubic }
+ PauseAnimation { duration: 1000 }
+ ParallelAnimation {
+ NumberAnimation { target: scale; property: "xScale"; to: 1; duration: 1000; easing.type: Easing.InOutBack }
+ NumberAnimation { target: scale; property: "yScale"; to: 1; duration: 1000; easing.type: Easing.InOutBack }
+ }
+ running: true
+ onStarted: particleAnim.restart()
+ onStopped: { particleAnim.restart(); restart() }
+ }
+ }
+ Text {
+ text: "VBO generated from OpenCL"
+ color: "yellow"
+ x: 10
+ y: 10
+ font.pointSize: 16
+ anchors.right: parent.right
+ anchors.margins: 10
+ }
+}
diff --git a/examples/quickcl/quickcl.pro b/examples/quickcl/quickcl.pro
new file mode 100644
index 0000000..f4f79c3
--- /dev/null
+++ b/examples/quickcl/quickcl.pro
@@ -0,0 +1,2 @@
+TEMPLATE = subdirs
+SUBDIRS += imageprocess histogram particles
diff --git a/qtquickcl.pro b/qtquickcl.pro
new file mode 100644
index 0000000..dc54c16
--- /dev/null
+++ b/qtquickcl.pro
@@ -0,0 +1,10 @@
+load(configure)
+
+qtCompileTest(opencl)
+
+load(qt_parts)
+
+!config_opencl {
+ warning("OpenCL not found")
+ SUBDIRS =
+}
diff --git a/src/quickcl/doc/qtquickcl.qdocconf b/src/quickcl/doc/qtquickcl.qdocconf
new file mode 100644
index 0000000..583111c
--- /dev/null
+++ b/src/quickcl/doc/qtquickcl.qdocconf
@@ -0,0 +1,65 @@
+include($QT_INSTALL_DOCS/global/macros.qdocconf)
+include($QT_INSTALL_DOCS/global/qt-cpp-defines.qdocconf)
+include($QT_INSTALL_DOCS/global/compat.qdocconf)
+include($QT_INSTALL_DOCS/global/fileextensions.qdocconf)
+include($QT_INSTALL_DOCS/global/qt-html-templates-offline.qdocconf)
+
+project = QtQuickCL
+description = Qt Quick CL Reference Documentation
+url = http://doc.qt.io/QtQuickCL/
+version = 1.0
+
+qhp.projects = QtQuickCL
+
+qhp.QtQuickCL.file = qtquickcl.qhp
+qhp.QtQuickCL.namespace = com.qt.quickcl.1.0
+qhp.QtQuickCL.virtualFolder = qtquickcl
+qhp.QtQuickCL.indexTitle = Qt Quick CL
+qhp.QtQuickCL.indexRoot =
+qhp.QtQuickCL.filterAttributes = qtquickcl 1.0 qtrefdoc
+qhp.QtQuickCL.customFilters.Qt.name = QtQuickCL 1.0
+qhp.QtQuickCL.customFilters.Qt.filterAttributes = qtquickcl 1.0
+
+qhp.QtQuickCL.subprojects = qmltypes classes examples
+qhp.QtQuickCL.subprojects.qmltypes.title = QML Types
+qhp.QtQuickCL.subprojects.qmltypes.indexTitle = Qt Quick CL QML Types
+qhp.QtQuickCL.subprojects.qmltypes.selectors = fake:qmlclass
+qhp.QtQuickCL.subprojects.qmltypes.sortPages = true
+qhp.QtQuickCL.subprojects.classes.title = C++ Classes
+qhp.QtQuickCL.subprojects.classes.indexTitle = Qt Quick CL C++ Classes
+qhp.QtQuickCL.subprojects.classes.selectors = class fake:headerfile
+qhp.QtQuickCL.subprojects.classes.sortPages = true
+qhp.QtQuickCL.subprojects.examples.title = Examples
+qhp.QtQuickCL.subprojects.examples.indexTitle = Qt Quick CL Examples
+qhp.QtQuickCL.subprojects.examples.selectors = fake:example
+
+HTML.footer = \
+ "<div class=\"footer\">\n" \
+ " <p>\n" \
+ " <acronym title=\"Copyright\">&copy;</acronym> 2014 Digia. Qt and Qt logos are\n" \
+ " trademarks of of Digia Corporation in Finland and/or other countries worldwide.\n" \
+ " </p>\n" \
+ " All other trademarks are property of their respective owners.\n" \
+ " <br />\n" \
+ " <p>\n" \
+ " Licensees holding valid Qt Enterprise licenses may use this document in accordance\n" \
+ " with the Qt Enterprise License Agreement provided with the Software or,\n" \
+ " alternatively, in accordance with the terms contained in a written agreement\n" \
+ " between you and Digia.\n" \
+ " </p>\n" \
+ "</div>\n"
+
+indexes += $QT_INSTALL_DOCS/qtqml/qtqml.index \
+ $QT_INSTALL_DOCS/qtquick/qtquick.index \
+ $QT_INSTALL_DOCS/qtdoc/qtdoc.index \
+ $QT_INSTALL_DOCS/qtquickcontrols/qtquickcontrols.index
+
+headerdirs += ../
+sourcedirs += ../
+exampledirs += ../../../examples/
+imagedirs += images
+
+navigation.landingpage = "Qt Quick CL"
+navigation.qmltypespage = "Qt Quick CL QML Types"
+navigation.cppclassespage = "Qt Quick CL C++ Classes"
+buildversion = "Qt Quick CL 1.0"
diff --git a/src/quickcl/qquickclcontext.cpp b/src/quickcl/qquickclcontext.cpp
new file mode 100644
index 0000000..4c07593
--- /dev/null
+++ b/src/quickcl/qquickclcontext.cpp
@@ -0,0 +1,199 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Quick CL module
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qquickclcontext_p.h"
+
+#include <QtGui/QOpenGLContext>
+#include <QtGui/QOpenGLFunctions>
+#include <QtCore/QLoggingCategory>
+#include <qpa/qplatformnativeinterface.h>
+
+QT_BEGIN_NAMESPACE
+
+Q_LOGGING_CATEGORY(logCL, "qt.quickcl")
+
+QQuickCLContext::QQuickCLContext()
+ : m_platform(0),
+ m_device(0),
+ m_context(0)
+{
+}
+
+QQuickCLContext::~QQuickCLContext()
+{
+ destroy();
+}
+
+bool QQuickCLContext::create()
+{
+ destroy();
+ qCDebug(logCL, "Creating new OpenCL context");
+
+ QOpenGLContext *ctx = QOpenGLContext::currentContext();
+ if (!ctx) {
+ qWarning("Attempted CL-GL interop without a current OpenGL context");
+ return false;
+ }
+ QOpenGLFunctions *f = ctx->functions();
+
+ cl_uint n;
+ cl_int err = clGetPlatformIDs(0, 0, &n);
+ if (err != CL_SUCCESS) {
+ qWarning("Failed to get platform ID count (error %d)", err);
+ if (err == -1001) {
+ qWarning("Could not find OpenCL implementation. ICD missing?"
+#ifdef Q_OS_LINUX
+ " Check /etc/OpenCL/vendors."
+#endif
+ );
+ }
+ return false;
+ }
+ if (n == 0) {
+ qWarning("No OpenCL platform found");
+ return false;
+ }
+ QVector<cl_platform_id> platformIds;
+ platformIds.resize(n);
+ if (clGetPlatformIDs(n, platformIds.data(), 0) != CL_SUCCESS) {
+ qWarning("Failed to get platform IDs");
+ return false;
+ }
+ m_platform = platformIds[0];
+ const char *vendor = (const char *) f->glGetString(GL_VENDOR);
+ qCDebug(logCL, "GL_VENDOR: %s", vendor);
+ const bool isNV = vendor && strstr(vendor, "NVIDIA");
+ const bool isIntel = vendor && strstr(vendor, "Intel");
+ const bool isAMD = vendor && strstr(vendor, "ATI");
+ qCDebug(logCL, "Found %u OpenCL platforms:", n);
+ for (cl_uint i = 0; i < n; ++i) {
+ QByteArray name;
+ name.resize(1024);
+ clGetPlatformInfo(platformIds[i], CL_PLATFORM_NAME, name.size(), name.data(), 0);
+ qCDebug(logCL, "Platform %p: %s", platformIds[i], name.constData());
+ if (isNV && name.contains(QByteArrayLiteral("NVIDIA")))
+ m_platform = platformIds[i];
+ else if (isIntel && name.contains(QByteArrayLiteral("Intel")))
+ m_platform = platformIds[i];
+ else if (isAMD && name.contains(QByteArrayLiteral("AMD")))
+ m_platform = platformIds[i];
+ }
+ qCDebug(logCL, "Using platform %p", m_platform);
+
+#if defined (Q_OS_OSX)
+ cl_context_properties contextProps[] = { CL_CONTEXT_PROPERTY_USE_CGL_SHAREGROUP_APPLE,
+ (cl_context_properties) CGLGetShareGroup(CGLGetCurrentContext()),
+ 0 };
+#elif defined(Q_OS_WIN)
+ if (QOpenGLContext::openGLModuleType() == QOpenGLContext::LibGLES) {
+ // We don't do D3D-CL interop.
+ qWarning("ANGLE is not supported");
+ return false;
+ }
+ cl_context_properties contextProps[] = { CL_CONTEXT_PLATFORM, (cl_context_properties) m_platform,
+ CL_GL_CONTEXT_KHR, (cl_context_properties) wglGetCurrentContext(),
+ CL_WGL_HDC_KHR, (cl_context_properties) wglGetCurrentDC(),
+ 0 };
+#elif defined(Q_OS_LINUX)
+ cl_context_properties contextProps[] = { CL_CONTEXT_PLATFORM, (cl_context_properties) m_platform,
+ CL_GL_CONTEXT_KHR, 0,
+ 0, 0,
+ 0 };
+ QPlatformNativeInterface *nativeIf = qGuiApp->platformNativeInterface();
+ void *dpy = nativeIf->nativeResourceForIntegration(QByteArrayLiteral("egldisplay")); // EGLDisplay
+ if (dpy) {
+ void *nativeContext = nativeIf->nativeResourceForContext("eglcontext", ctx);
+ if (!nativeContext)
+ qWarning("Failed to get the underlying EGL context from the current QOpenGLContext");
+ contextProps[3] = (cl_context_properties) nativeContext;
+ contextProps[4] = CL_EGL_DISPLAY_KHR;
+ contextProps[5] = (cl_context_properties) dpy;
+ } else {
+ dpy = nativeIf->nativeResourceForIntegration(QByteArrayLiteral("display")); // Display *
+ void *nativeContext = nativeIf->nativeResourceForContext("glxcontext", ctx);
+ if (!nativeContext)
+ qWarning("Failed to get the underlying GLX context from the current QOpenGLContext");
+ contextProps[3] = (cl_context_properties) nativeContext;
+ contextProps[4] = CL_GLX_DISPLAY_KHR;
+ contextProps[5] = (cl_context_properties) dpy;
+ }
+#endif
+
+ m_context = clCreateContextFromType(contextProps, CL_DEVICE_TYPE_GPU, 0, 0, &err);
+ if (!m_context) {
+ qWarning("Failed to create OpenCL context: %d", err);
+ return false;
+ }
+ qCDebug(logCL, "Using context %p", m_context);
+
+#if defined(Q_OS_OSX)
+ err = clGetGLContextInfoAPPLE(m_context, CGLGetCurrentContext(),
+ CL_CGL_DEVICE_FOR_CURRENT_VIRTUAL_SCREEN_APPLE,
+ sizeof(cl_device_id), &m_device, 0);
+ if (err != CL_SUCCESS) {
+ qWarning("Failed to get OpenCL device for current screen: %d", err);
+ destroy();
+ return false;
+ }
+#else
+ clGetGLContextInfoKHR_fn getGLContextInfo = (clGetGLContextInfoKHR_fn) clGetExtensionFunctionAddress("clGetGLContextInfoKHR");
+ if (!getGLContextInfo || getGLContextInfo(contextProps, CL_CURRENT_DEVICE_FOR_GL_CONTEXT_KHR,
+ sizeof(cl_device_id), &m_device, 0) != CL_SUCCESS) {
+ err = clGetDeviceIDs(m_platform, CL_DEVICE_TYPE_GPU, 1, &m_device, 0);
+ if (err != CL_SUCCESS) {
+ qWarning("Failed to get OpenCL device: %d", err);
+ destroy();
+ return false;
+ }
+ }
+#endif
+ qCDebug(logCL, "Using device %p", m_device);
+
+ return true;
+}
+
+void QQuickCLContext::destroy()
+{
+ if (m_context) {
+ qCDebug(logCL, "Releasing OpenCL context %p", m_context);
+ clReleaseContext(m_context);
+ m_context = 0;
+ }
+ m_device = 0;
+ m_platform = 0;
+}
+
+QT_END_NAMESPACE
diff --git a/src/quickcl/qquickclcontext_p.h b/src/quickcl/qquickclcontext_p.h
new file mode 100644
index 0000000..10bf70d
--- /dev/null
+++ b/src/quickcl/qquickclcontext_p.h
@@ -0,0 +1,67 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Quick CL module
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QQUICKCLCONTEXT_P_H
+#define QQUICKCLCONTEXT_P_H
+
+#include <QtQuickCL/qtquickclglobal.h>
+
+QT_BEGIN_NAMESPACE
+
+class QQuickCLContext
+{
+public:
+ QQuickCLContext();
+ ~QQuickCLContext();
+
+ bool create();
+ void destroy();
+
+ bool isValid() const { return m_context != 0; }
+
+ cl_platform_id platform() const { return m_platform; }
+ cl_device_id device() const { return m_device; }
+ cl_context context() const { return m_context; }
+
+private:
+ cl_platform_id m_platform;
+ cl_device_id m_device;
+ cl_context m_context;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/quickcl/qquickclimagerunnable.cpp b/src/quickcl/qquickclimagerunnable.cpp
new file mode 100644
index 0000000..01a7be1
--- /dev/null
+++ b/src/quickcl/qquickclimagerunnable.cpp
@@ -0,0 +1,340 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Quick CL module
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qquickclimagerunnable.h"
+#include "qquickclitem.h"
+#include <QSGSimpleTextureNode>
+#include <QSGTextureProvider>
+#include <QOpenGLTexture>
+#include <QOpenGLFunctions>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+ \class QQuickCLImageRunnable
+ \brief A QQuickCLItem backend specialized for operating on a single texture from the scenegraph.
+
+ Specialized QQuickCLRunnable for applications wishing to perform
+ OpenCL operations on an OpenCL image object wrapping an OpenGL texture of
+ an Image element - or any other texture provider in the Qt Quick scene -
+ and show the result in the scene.
+
+ The class provides an OpenCL command queue and a simple texture node for
+ the scenegraph. The item providing the texture is read from the associated
+ QQuickCLItem's \c source property by default. This can be overridden by
+ calling setSourcePropertyName().
+
+ By using this specialized class instead of the more generic base
+ QQuickCLRunnable, applications can focus on the kernels and there is no
+ need to manually manage OpenCL image objects, textures, and scenegraph nodes.
+
+ For example, assuming a QQuickCLItem subclass named CLItem, running OpenCL
+ kernels on an image, producing a new output image rendered by CLItem in an
+ accelerated manner without any CPU side readbacks, becomes as simple as the
+ following:
+
+ \badcode
+ Image {
+ id: srcImage
+ source: "image.png"
+ }
+ ...
+ CLItem {
+ source: srcImage
+ }
+ \endcode
+
+ The source can be any texture provider. By enabling layering, the OpenCL
+ kernels can operate on the rendering of an entire sub-tree instead of just
+ a single Image item. In addition, this approach also allows hiding the
+ source sub-tree:
+
+ \badcode
+ Item {
+ id: srcItem
+ layer.enabled: true
+ visible: false
+ ...
+ }
+ CLItem {
+ source: srcItem
+ }
+ \endcode
+
+ Besides image processing scenarios it is also possible to use
+ QQuickCLImageRunnable for computations that produce arbitrary data from an
+ image (for example histogram calculation). Passing the flag NoImageOutput to
+ the constructor will avoid generating an OpenGL texture and corresponding
+ OpenCL image object for the output. Instead, it is up to the runKernel()
+ implementation to emit a signal on the associated QQuickCLItem and pass an
+ object exposing the results of the computation to QML. The visualization is
+ then done by child items since the QQuickCLItem itself does not render
+ anything in the Qt Quick scenegraph in this case, although it is still
+ present as an item having contents.
+ */
+
+/*!
+ \fn void QQuickCLImageRunnable::runKernel(cl_mem inImage, cl_mem outImage, const QSize &size)
+
+ Called when the OpenCL kernel(s) performing the image processing need to be
+ run. \a inImage and \a outImage are ready to be used as input and output
+ \c image2d_t parameters to a kernel. \a size specifies the size of the images.
+
+ \note For QQuickCLImageRunnable instances created with the NoImageOutput
+ flag \a outImage is always \c 0.
+
+ \note QQuickCLImageRunnable is aware of \c cl_khr_gl_event and will invoke
+ glFinish() and clFinish() as necessary in case the extension is not
+ supported. Both will be omitted when the extension is present. However,
+ clFinish() is still invoked regardless of the presence of the extension when
+ either the \c ForceCLFinish or \c Profile flags are set.
+ */
+
+class QQuickCLImageRunnablePrivate
+{
+public:
+ QQuickCLImageRunnablePrivate(QQuickCLItem *item, QQuickCLImageRunnable::Flags flags)
+ : item(item),
+ flags(flags),
+ queue(0),
+ inputTexture(0),
+ outputTexture(0),
+ elapsed(0)
+ {
+ image[0] = image[1] = 0;
+ profEv[0] = profEv[1] = 0;
+ sourcePropertyName = QByteArrayLiteral("source");
+ }
+
+ ~QQuickCLImageRunnablePrivate() {
+ if (image[0])
+ clReleaseMemObject(image[0]);
+ if (image[1])
+ clReleaseMemObject(image[1]);
+ if (queue)
+ clReleaseCommandQueue(queue);
+ delete outputTexture;
+ }
+
+ QQuickCLItem *item;
+ QQuickCLImageRunnable::Flags flags;
+ cl_command_queue queue;
+ cl_mem image[2];
+ QSize textureSize;
+ uint inputTexture;
+ QOpenGLTexture *outputTexture;
+ QByteArray sourcePropertyName;
+ cl_event profEv[2];
+ double elapsed;
+ bool needsExplicitSync;
+};
+
+/*!
+ Constructs a new QQuickCLImageRunnable instance associated with \a item.
+ Special behavior, for example computations producing arbitrary non-image
+ output, can be enabled via \a flags.
+ */
+QQuickCLImageRunnable::QQuickCLImageRunnable(QQuickCLItem *item, Flags flags)
+ : d_ptr(new QQuickCLImageRunnablePrivate(item, flags))
+{
+ Q_D(QQuickCLImageRunnable);
+ cl_int err;
+ cl_command_queue_properties queueProps = flags.testFlag(Profile) ? CL_QUEUE_PROFILING_ENABLE : 0;
+ d->queue = clCreateCommandQueue(item->context(), item->device(), queueProps, &err);
+ if (!d->queue) {
+ qWarning("Failed to create OpenCL command queue: %d", err);
+ return;
+ }
+ d->needsExplicitSync = !item->deviceExtensions().contains(QByteArrayLiteral("cl_khr_gl_event"));
+}
+
+QQuickCLImageRunnable::~QQuickCLImageRunnable()
+{
+ delete d_ptr;
+}
+
+/*!
+ \return the OpenCL command queue.
+ */
+cl_command_queue QQuickCLImageRunnable::commandQueue() const
+{
+ Q_D(const QQuickCLImageRunnable);
+ return d->queue;
+}
+
+/*!
+ Sets the name of the property that is queried from the item that was passed
+ to the constructor. The default value is \c source.
+ */
+void QQuickCLImageRunnable::setSourcePropertyName(const QByteArray &name)
+{
+ Q_D(QQuickCLImageRunnable);
+ d->sourcePropertyName = name;
+}
+
+QSGNode *QQuickCLImageRunnable::update(QSGNode *node)
+{
+ Q_D(QQuickCLImageRunnable);
+ QSGTextureProvider *textureProvider;
+ QSGTexture *texture;
+ QQuickItem *source = d->item->property(d->sourcePropertyName.constData()).value<QQuickItem *>();
+ if (!source
+ || !source->isTextureProvider()
+ || !(textureProvider = source->textureProvider())
+ || !(texture = textureProvider->texture())) {
+ delete node;
+ return 0;
+ }
+
+ QSGDynamicTexture *dtex = qobject_cast<QSGDynamicTexture *>(texture);
+ if (dtex)
+ dtex->updateTexture();
+
+ if (!texture->textureId()) { // the texture provider may not be ready yet, try again later
+ d->item->scheduleUpdate();
+ return node;
+ }
+
+ if (d->inputTexture != uint(texture->textureId())
+ || d->textureSize != texture->textureSize()
+ || (!d->flags.testFlag(NoOutputImage) && !d->outputTexture)) {
+ if (d->image[0])
+ clReleaseMemObject(d->image[0]);
+ d->image[0] = 0;
+ if (d->image[1])
+ clReleaseMemObject(d->image[1]);
+ d->image[1] = 0;
+ delete d->outputTexture;
+ d->outputTexture = 0;
+ delete node;
+ node = 0;
+ }
+
+ cl_int err = 0;
+ if (!d->image[0])
+ d->image[0] = clCreateFromGLTexture2D(d->item->context(), CL_MEM_READ_ONLY, GL_TEXTURE_2D, 0,
+ texture->textureId(), &err);
+ if (!d->image[0]) {
+ if (err == CL_INVALID_GL_OBJECT) // the texture provider may not be ready yet, try again later
+ d->item->scheduleUpdate();
+ else
+ qWarning("Failed to create OpenCL image object from input OpenGL texture: %d", err);
+ return node;
+ }
+
+ d->inputTexture = texture->textureId();
+ d->textureSize = texture->textureSize();
+
+ const int imageCount = d->flags.testFlag(NoOutputImage) ? 1 : 2;
+ if (imageCount == 2) {
+ if (!d->outputTexture)
+ d->outputTexture = new QOpenGLTexture(QImage(d->textureSize, QImage::Format_RGB32));
+
+ if (!d->image[1])
+ d->image[1] = clCreateFromGLTexture2D(d->item->context(), CL_MEM_WRITE_ONLY, GL_TEXTURE_2D, 0,
+ d->outputTexture->textureId(), &err);
+ if (!d->image[1]) {
+ qWarning("Failed to create OpenCL image object for output OpenGL texture: %d", err);
+ return node;
+ }
+ }
+
+ if (d->needsExplicitSync)
+ QOpenGLContext::currentContext()->functions()->glFinish();
+
+ err = clEnqueueAcquireGLObjects(d->queue, imageCount, d->image, 0, 0, 0);
+ if (err != CL_SUCCESS) {
+ qWarning("Failed to queue acquiring the GL textures: %d", err);
+ return node;
+ }
+
+ if (d->flags.testFlag(Profile))
+ if (clEnqueueMarker(d->queue, &d->profEv[0]) != CL_SUCCESS)
+ qWarning("Failed to enqueue profiling marker (start)");
+
+ runKernel(d->image[0], d->image[1], d->textureSize);
+
+ if (d->flags.testFlag(Profile))
+ if (clEnqueueMarker(d->queue, &d->profEv[1]) != CL_SUCCESS)
+ qWarning("Failed to enqueue profiling marker (end)");
+
+ clEnqueueReleaseGLObjects(d->queue, imageCount, d->image, 0, 0, 0);
+
+ if (d->flags.testFlag(ForceCLFinish) || d->needsExplicitSync || d->flags.testFlag(Profile))
+ clFinish(d->queue);
+
+ if (d->flags.testFlag(Profile)) {
+ cl_ulong start = 0, end = 0;
+ err = clGetEventProfilingInfo(d->profEv[0], CL_PROFILING_COMMAND_QUEUED, sizeof(cl_ulong), &start, 0);
+ if (err != CL_SUCCESS)
+ qWarning("Failed to get profiling info for start event: %d", err);
+ err = clGetEventProfilingInfo(d->profEv[1], CL_PROFILING_COMMAND_END, sizeof(cl_ulong), &end, 0);
+ if (err != CL_SUCCESS)
+ qWarning("Failed to get profiling info for end event: %d", err);
+ d->elapsed = double(end - start) / 1000000.0;
+ clReleaseEvent(d->profEv[0]);
+ clReleaseEvent(d->profEv[1]);
+ }
+
+ if (imageCount == 1)
+ return 0;
+
+ QSGSimpleTextureNode *tnode = static_cast<QSGSimpleTextureNode *>(node);
+ if (!tnode) {
+ tnode = new QSGSimpleTextureNode;
+ tnode->setFiltering(QSGTexture::Linear);
+ tnode->setTexture(d->item->window()->createTextureFromId(d->outputTexture->textureId(), d->textureSize));
+ }
+ tnode->setRect(d->item->boundingRect());
+ tnode->markDirty(QSGNode::DirtyMaterial);
+
+ return tnode;
+}
+
+/*!
+ Returns the number of milliseconds spent on OpenCL operations during the
+ last finished invocation of runKernel().
+
+ \note OpenCL command queue profiling must be enabled by passing the \c Profile
+ flag to the constructor.
+ */
+double QQuickCLImageRunnable::elapsed() const
+{
+ Q_D(const QQuickCLImageRunnable);
+ return d->elapsed;
+}
+
+QT_END_NAMESPACE
diff --git a/src/quickcl/qquickclimagerunnable.h b/src/quickcl/qquickclimagerunnable.h
new file mode 100644
index 0000000..8ca32b0
--- /dev/null
+++ b/src/quickcl/qquickclimagerunnable.h
@@ -0,0 +1,82 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Quick CL module
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QQUICKCLIMAGERUNNABLE_H
+#define QQUICKCLIMAGERUNNABLE_H
+
+#include <QtQuickCL/qtquickclglobal.h>
+#include <QtQuickCL/qquickclrunnable.h>
+
+QT_BEGIN_NAMESPACE
+
+class QQuickCLImageRunnablePrivate;
+class QQuickCLItem;
+
+class Q_QUICKCL_EXPORT QQuickCLImageRunnable : public QQuickCLRunnable
+{
+ Q_DECLARE_PRIVATE(QQuickCLImageRunnable)
+
+public:
+ enum Flag {
+ NoOutputImage = 0x01,
+ Profile = 0x02,
+ ForceCLFinish = 0x04
+ };
+ Q_DECLARE_FLAGS(Flags, Flag)
+
+ QQuickCLImageRunnable(QQuickCLItem *item, Flags flags = 0);
+ ~QQuickCLImageRunnable();
+
+ cl_command_queue commandQueue() const;
+
+ void setSourcePropertyName(const QByteArray &name);
+
+ double elapsed() const;
+
+protected:
+ virtual void runKernel(cl_mem inImage, cl_mem outImage, const QSize &size) = 0;
+
+private:
+ QSGNode *update(QSGNode *node) Q_DECL_OVERRIDE;
+
+ QQuickCLImageRunnablePrivate *d_ptr;
+};
+
+Q_DECLARE_OPERATORS_FOR_FLAGS(QQuickCLImageRunnable::Flags)
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/quickcl/qquickclitem.cpp b/src/quickcl/qquickclitem.cpp
new file mode 100644
index 0000000..fa5933c
--- /dev/null
+++ b/src/quickcl/qquickclitem.cpp
@@ -0,0 +1,385 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Quick CL module
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qquickclitem.h"
+#include "qquickclcontext_p.h"
+#include <QtCore/QAtomicInt>
+#include <QtCore/QHash>
+#include <QtCore/QFile>
+#include <QtCore/QLoggingCategory>
+#include <QtQuick/private/qquickitem_p.h>
+
+QT_BEGIN_NAMESPACE
+
+Q_DECLARE_LOGGING_CATEGORY(logCL)
+
+/*!
+ \class QQuickCLItem
+
+ \brief QQuickCLItem is a QQuickItem that automatically gets an OpenCL
+ context with the proper platform and device chosen for CL-GL interop.
+
+ Each instance of QQuickCLItem is backed by a corresponding QQuickCLRunnable.
+
+ \note When animating properties that are used in OpenCL kernels, call the
+ \l{QQuickItem::update()}{update()} function (from the gui thread) to
+ trigger updates.
+ */
+
+/*!
+ \class QQuickCLRunnable
+
+ \brief QQuickCLRunnable instances live on the scenegraph's render thread
+ encapsulating OpenCL and related OpenGL resources.
+
+ The constructor, destructor and update() are always invoked on the render
+ thread with the OpenGL context bound and the OpenCL context ready. This
+ allows easy usage of OpenCL and especially OpenGL resources without
+ worrying about lifetime and threading. They can simply be created in the
+ constructor and released in the destructor.
+ */
+
+/*!
+ \fn QSGNode *QQuickCLRunnable::update(QSGNode *node)
+
+ Called on the render thread every time the QQuickCLItem is updated.
+ Semantically equivalent to
+ \l{QQuickItem::updatePaintNode()}{updatePaintNode()}.
+
+ It is up to the implementation to decide what to do here: it can launch
+ OpenCL operations, wait for them to finish, and return a scenegraph node,
+ for example a QSGSimpleTextureNode wrapping the resulting texture.
+
+ Alternatively, it can also launch a longer running CL operation and return
+ \c null or a node providing some temporary content. Then, when the CL
+ operation is finished, \l{QQuickCLItem::scheduleUpdate()}{scheduleUpdate()}
+ is called from an OpenCL event callback to schedule an update for the Quick
+ item, which means eventually invoking this function again. This function
+ can then provide a new node with the results of the computation.
+
+ \note When necessary, future updates for the QQuickCLItem can also be
+ scheduled from this function. However, this requires calling
+ QQuickCLItem::scheduleUpdate() instead of QQuickItem::update().
+ */
+
+/*!
+ \fn QQuickCLRunnable *QQuickCLItem::createCL()
+
+ Factory function invoked on the render thread after initializing OpenCL.
+ */
+
+class QQuickCLItemPrivate : public QQuickItemPrivate
+{
+ Q_DECLARE_PUBLIC(QQuickCLItem)
+
+public:
+ QQuickCLItemPrivate() : clctx(0), clnode(0) { }
+
+ static void CL_CALLBACK eventCallback(cl_event event, cl_int status, void *user_data);
+
+ QQuickCLContext *clctx;
+ QQuickCLRunnable *clnode;
+};
+
+QQuickCLItem::QQuickCLItem(QQuickItem *parent)
+ : QQuickItem(*new QQuickCLItemPrivate, parent)
+{
+ setFlag(ItemHasContents);
+}
+
+/*!
+ \return the selected OpenCL platform. Matches the OpenGL context in use.
+
+ \note The value is only available after the item is first rendered. It is
+ always safe to call this function from QQuickCLRunnable's constructor,
+ destructor and \l{QQuickCLRunnable::update()}{update()} function.
+ */
+cl_platform_id QQuickCLItem::platform() const
+{
+ Q_D(const QQuickCLItem);
+ return d->clctx ? d->clctx->platform() : 0;
+}
+
+/*!
+ \return the selected OpenCL device. Matches the OpenGL context in use.
+
+ \note The value is only available after the item is first rendered. It is
+ always safe to call this function from QQuickCLRunnable's constructor,
+ destructor and \l{QQuickCLRunnable::update()}{update()} function.
+ */
+cl_device_id QQuickCLItem::device() const
+{
+ Q_D(const QQuickCLItem);
+ return d->clctx ? d->clctx->device() : 0;
+}
+
+/*!
+ \return the OpenCL context.
+
+ \note The value is only available after the item is first rendered. It is
+ always safe to call this function from QQuickCLRunnable's constructor,
+ destructor and \l{QQuickCLRunnable::update()}{update()} function.
+ */
+cl_context QQuickCLItem::context() const
+{
+ Q_D(const QQuickCLItem);
+ return d->clctx ? d->clctx->context() : 0;
+}
+
+QSGNode *QQuickCLItem::updatePaintNode(QSGNode *node, UpdatePaintNodeData *)
+{
+ Q_D(QQuickCLItem);
+
+ if (width() <= 0 || height() <= 0) {
+ delete node;
+ return 0;
+ }
+
+ // render thread, initialize CL if not yet done
+ if (!d->clctx) {
+ d->clctx = new QQuickCLContext;
+ if (!d->clctx->create()) {
+ qWarning("Failed to create OpenCL context");
+ delete d->clctx;
+ d->clctx = 0;
+ }
+ }
+
+ if (!d->clctx)
+ return 0;
+
+ if (!d->clnode)
+ d->clnode = createCL();
+
+ return d->clnode ? d->clnode->update(node) : 0;
+}
+
+class ReleaseRunnable : public QRunnable
+{
+public:
+ ReleaseRunnable(QQuickCLContext *clctx, QQuickCLRunnable *clnode) : clctx(clctx), clnode(clnode) { }
+ void run() Q_DECL_OVERRIDE {
+ delete clnode;
+ delete clctx;
+ }
+private:
+ QQuickCLContext *clctx;
+ QQuickCLRunnable *clnode;
+};
+
+void QQuickCLItem::releaseResources()
+{
+ // gui thread, just schedule. NB this and d may be dead by the time the runnable is run
+ Q_D(QQuickCLItem);
+ window()->scheduleRenderJob(new ReleaseRunnable(d->clctx, d->clnode), QQuickWindow::BeforeSynchronizingStage);
+ d->clnode = 0;
+ d->clctx = 0;
+}
+
+void QQuickCLItem::invalidateSceneGraph()
+{
+ // render thread
+ Q_D(QQuickCLItem);
+ delete d->clnode;
+ d->clnode = 0;
+ delete d->clctx;
+ d->clctx = 0;
+}
+
+static const int EV_UPDATE = QEvent::User + 128;
+static const int EV_EVENT = QEvent::User + 129;
+
+class EventCompleteEvent : public QEvent
+{
+public:
+ EventCompleteEvent(cl_event event) : QEvent(QEvent::Type(EV_EVENT)), event(event) { }
+ cl_event event;
+};
+
+bool QQuickCLItem::event(QEvent *e)
+{
+ if (e->type() == EV_UPDATE) {
+ update();
+ return true;
+ } else if (e->type() == EV_EVENT) {
+ EventCompleteEvent *ev = static_cast<EventCompleteEvent *>(e);
+ eventCompleted(ev->event);
+ return true;
+ }
+ return QQuickItem::event(e);
+}
+
+/*!
+ Schedules an update for the item. Unlike \l{QQuickItem::update()}{the base
+ class' update()}, this is safe to be called on any thread, hence it is safe
+ for use from CL event callbacks.
+ */
+void QQuickCLItem::scheduleUpdate()
+{
+ QCoreApplication::postEvent(this, new QEvent(QEvent::Type(EV_UPDATE)));
+}
+
+/*!
+ \return the name of the current platform in use.
+
+ \note This function can only be called from a QQuickCLRunnable's
+ constructor, destructor and \l{QQuickCLRunnable::update()}{update()}
+ function, or after the item has been rendered at least once.
+ */
+QByteArray QQuickCLItem::platformName() const
+{
+ QByteArray name(1024, '\0');
+ clGetPlatformInfo(platform(), CL_PLATFORM_NAME, name.size(), name.data(), 0);
+ name.resize(int(strlen(name.constData())));
+ return name;
+}
+
+/*!
+ \return the list of device extensions.
+
+ \note This function can only be called from a QQuickCLRunnable's
+ constructor, destructor and \l{QQuickCLRunnable::update()}{update()}
+ function, or after the item has been rendered at least once.
+ */
+QByteArray QQuickCLItem::deviceExtensions() const
+{
+ QByteArray ext(8192, '\0');
+ clGetDeviceInfo(device(), CL_DEVICE_EXTENSIONS, ext.size(), ext.data(), 0);
+ ext.resize(int(strlen(ext.constData())));
+ return ext;
+}
+
+/*!
+ Creates and builds an OpenCL program from the source code in \a src.
+
+ \return the cl_program or \c 0 when failed. Errors and build logs are
+ printed to the warning output.
+
+ \note This function can only be called from a QQuickCLRunnable's
+ constructor, destructor and \l{QQuickCLRunnable::update()}{update()}
+ function, or after the item has been rendered at least once.
+ */
+cl_program QQuickCLItem::buildProgram(const QByteArray &src)
+{
+ cl_int err;
+ const char *str = src.constData();
+ cl_program prog = clCreateProgramWithSource(context(), 1, &str, 0, &err);
+ if (!prog) {
+ qWarning("Failed to create OpenCL program: %d", err);
+ qWarning("Source was:\n%s", str);
+ return 0;
+ }
+ cl_device_id dev = device();
+ err = clBuildProgram(prog, 1, &dev, 0, 0, 0);
+ if (err != CL_SUCCESS) {
+ qWarning("Failed to build OpenCL program: %d", err);
+ qWarning("Source was:\n%s", str);
+ QByteArray log;
+ log.resize(8192);
+ clGetProgramBuildInfo(prog, dev, CL_PROGRAM_BUILD_LOG, log.size(), log.data(), 0);
+ qWarning("Build log:\n%s", log.constData());
+ return 0;
+ }
+ return prog;
+}
+
+/*!
+ Creates and builds an OpenCL program from the source file \a filename.
+
+ \sa buildProgram()
+ */
+cl_program QQuickCLItem::buildProgramFromFile(const QString &filename)
+{
+ QFile f(filename);
+ if (!f.open(QIODevice::ReadOnly | QIODevice::Text)) {
+ qWarning("Failed to open OpenCL program source file %s", qPrintable(filename));
+ return 0;
+ }
+ return buildProgram(f.readAll());
+}
+
+struct EventCallbackParam
+{
+ EventCallbackParam(QQuickCLItem *item) : item(item) { }
+ QPointer<QQuickCLItem> item;
+};
+
+/*!
+ Registers an event callback for \a event. The virtual function
+ eventCompleted() will get invoked on the gui/main thread when the event
+ completes.
+
+ This allows easy and safe asynchronous computations because the results can
+ directly be exposed to QML from eventCompleted() due to it running on the
+ gui/main thread. In addition it is guaranteed that eventCompleted() is
+ never called directly from the OpenCL callback function. Special cases like
+ destroying the QQuickCLItem before completing the event are also handled
+ gracefully.
+
+ \note \a event is not released.
+ */
+void QQuickCLItem::watchEvent(cl_event event)
+{
+ EventCallbackParam *param = new EventCallbackParam(this);
+ cl_int err = clSetEventCallback(event, CL_COMPLETE, QQuickCLItemPrivate::eventCallback, param);
+ if (err != CL_SUCCESS)
+ qWarning("Failed to set event callback: %d", err);
+}
+
+/*!
+ Called on the gui/main thread when the \a event watched via watchEvent()
+ completes. The default implementation does nothing.
+ */
+void QQuickCLItem::eventCompleted(cl_event event)
+{
+ Q_UNUSED(event);
+}
+
+void CL_CALLBACK QQuickCLItemPrivate::eventCallback(cl_event event, cl_int status, void *user_data)
+{
+ if (status != CL_COMPLETE)
+ return;
+ EventCallbackParam *param = static_cast<EventCallbackParam *>(user_data);
+ if (!param->item.isNull())
+ QCoreApplication::postEvent(param->item, new EventCompleteEvent(event));
+ delete param;
+}
+
+QQuickCLRunnable::~QQuickCLRunnable()
+{
+}
+
+QT_END_NAMESPACE
diff --git a/src/quickcl/qquickclitem.h b/src/quickcl/qquickclitem.h
new file mode 100644
index 0000000..98ce7fc
--- /dev/null
+++ b/src/quickcl/qquickclitem.h
@@ -0,0 +1,84 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Quick CL module
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QQUICKCLITEM_H
+#define QQUICKCLITEM_H
+
+#include <QtQuickCL/qtquickclglobal.h>
+#include <QtQuickCL/qquickclrunnable.h>
+#include <QtQuick/qquickitem.h>
+
+QT_BEGIN_NAMESPACE
+
+class QQuickCLItemPrivate;
+
+class Q_QUICKCL_EXPORT QQuickCLItem : public QQuickItem
+{
+ Q_OBJECT
+ Q_DECLARE_PRIVATE(QQuickCLItem)
+
+public:
+ QQuickCLItem(QQuickItem *parent = 0);
+
+ cl_platform_id platform() const;
+ cl_device_id device() const;
+ cl_context context() const;
+
+ void scheduleUpdate();
+
+ QByteArray platformName() const;
+ QByteArray deviceExtensions() const;
+ cl_program buildProgram(const QByteArray &src);
+ cl_program buildProgramFromFile(const QString &filename);
+
+ void watchEvent(cl_event event);
+ virtual void eventCompleted(cl_event event);
+
+protected:
+ virtual QQuickCLRunnable *createCL() = 0;
+
+private slots:
+ void invalidateSceneGraph(); // called by QQuickWindow, must be a slot
+
+private:
+ QSGNode *updatePaintNode(QSGNode *, UpdatePaintNodeData *) Q_DECL_OVERRIDE;
+ void releaseResources() Q_DECL_OVERRIDE;
+ bool event(QEvent *) Q_DECL_OVERRIDE;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/quickcl/qquickclrunnable.h b/src/quickcl/qquickclrunnable.h
new file mode 100644
index 0000000..3086afd
--- /dev/null
+++ b/src/quickcl/qquickclrunnable.h
@@ -0,0 +1,54 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Quick CL module
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QQUICKCLRUNNABLE_H
+#define QQUICKCLRUNNABLE_H
+
+#include <QtQuickCL/qtquickclglobal.h>
+#include <QtQuick/qsgnode.h>
+
+QT_BEGIN_NAMESPACE
+
+class Q_QUICKCL_EXPORT QQuickCLRunnable
+{
+public:
+ virtual ~QQuickCLRunnable();
+ virtual QSGNode *update(QSGNode *node) = 0;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/quickcl/qtquickclglobal.h b/src/quickcl/qtquickclglobal.h
new file mode 100644
index 0000000..1e459eb
--- /dev/null
+++ b/src/quickcl/qtquickclglobal.h
@@ -0,0 +1,65 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Quick CL module
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QTQUICKCLGLOBAL_H
+#define QTQUICKCLGLOBAL_H
+
+#include <QtCore/qglobal.h>
+
+#ifdef Q_OS_OSX
+#include <OpenCL/opencl.h>
+#include <OpenGL/OpenGL.h>
+#else
+#include <CL/opencl.h>
+#endif
+
+QT_BEGIN_NAMESPACE
+
+#ifndef Q_QUICKCL_EXPORT
+# ifndef QT_STATIC
+# if defined(QT_BUILD_QUICKCL_LIB)
+# define Q_QUICKCL_EXPORT Q_DECL_EXPORT
+# else
+# define Q_QUICKCL_EXPORT Q_DECL_IMPORT
+# endif
+# else
+# define Q_QUICKCL_EXPORT
+# endif
+#endif
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/quickcl/quickcl.pro b/src/quickcl/quickcl.pro
new file mode 100644
index 0000000..2a28924
--- /dev/null
+++ b/src/quickcl/quickcl.pro
@@ -0,0 +1,24 @@
+TARGET = QtQuickCL
+QT = core core-private gui gui-private qml-private quick quick-private
+
+load(qt_module)
+
+DEFINES += QT_BUILD_QUICKCL_LIB
+
+HEADERS = \
+ qtquickclglobal.h \
+ qquickclcontext_p.h \
+ qquickclitem.h \
+ qquickclrunnable.h \
+ qquickclimagerunnable.h
+
+SOURCES = \
+ qquickclcontext.cpp \
+ qquickclitem.cpp \
+ qquickclimagerunnable.cpp
+
+QMAKE_DOCS = $$PWD/doc/qtquickcl.qdocconf
+
+osx: LIBS += -framework OpenCL
+unix: !osx: LIBS += -lOpenCL
+win32: !winrt: !wince*: LIBS += -lopengl32 -lOpenCL
diff --git a/src/src.pro b/src/src.pro
new file mode 100644
index 0000000..108b2c0
--- /dev/null
+++ b/src/src.pro
@@ -0,0 +1,3 @@
+TEMPLATE = subdirs
+SUBDIRS += \
+ quickcl
diff --git a/sync.profile b/sync.profile
new file mode 100644
index 0000000..92710c9
--- /dev/null
+++ b/sync.profile
@@ -0,0 +1,15 @@
+%modules = ( # path to module name map
+ "QtQuickCL" => "$basedir/src/quickcl",
+);
+%moduleheaders = ( # restrict the module headers to those found in relative path
+);
+# Module dependencies.
+# Every module that is required to build this module should have one entry.
+# Each of the module version specifiers can take one of the following values:
+# - A specific Git revision.
+# - any git symbolic ref resolvable from the module's repository (e.g. "refs/heads/master" to track master branch)
+#
+%dependencies = (
+ "qtbase" => "refs/heads/master",
+ "qtdeclarative" => "refs/heads/master",
+);