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-rw-r--r--src/gui/opengl/opengl.pri6
-rw-r--r--src/gui/opengl/qopengltextureblitter.cpp394
-rw-r--r--src/gui/opengl/qopengltextureblitter_p.h86
-rw-r--r--tests/manual/manual.pro2
-rw-r--r--tests/manual/qopengltextureblitter/main.cpp53
-rw-r--r--tests/manual/qopengltextureblitter/qopengltextureblitter.pro12
-rw-r--r--tests/manual/qopengltextureblitter/qopengltextureblitwindow.cpp167
-rw-r--r--tests/manual/qopengltextureblitter/qopengltextureblitwindow.h69
8 files changed, 787 insertions, 2 deletions
diff --git a/src/gui/opengl/opengl.pri b/src/gui/opengl/opengl.pri
index d249b855f5..cadba26797 100644
--- a/src/gui/opengl/opengl.pri
+++ b/src/gui/opengl/opengl.pri
@@ -31,7 +31,8 @@ contains(QT_CONFIG, opengl)|contains(QT_CONFIG, opengles2) {
opengl/qopenglversionfunctions.h \
opengl/qopenglversionfunctionsfactory_p.h \
opengl/qopenglvertexarrayobject.h \
- opengl/qopengldebug.h
+ opengl/qopengldebug.h \
+ opengl/qopengltextureblitter_p.h
SOURCES += opengl/qopengl.cpp \
opengl/qopenglfunctions.cpp \
@@ -51,7 +52,8 @@ contains(QT_CONFIG, opengl)|contains(QT_CONFIG, opengles2) {
opengl/qopenglversionfunctions.cpp \
opengl/qopenglversionfunctionsfactory.cpp \
opengl/qopenglvertexarrayobject.cpp \
- opengl/qopengldebug.cpp
+ opengl/qopengldebug.cpp \
+ opengl/qopengltextureblitter.cpp
!wince* {
HEADERS += opengl/qopengltexture.h \
diff --git a/src/gui/opengl/qopengltextureblitter.cpp b/src/gui/opengl/qopengltextureblitter.cpp
new file mode 100644
index 0000000000..1fbdd20207
--- /dev/null
+++ b/src/gui/opengl/qopengltextureblitter.cpp
@@ -0,0 +1,394 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Digia. For licensing terms and
+** conditions see http://qt.digia.com/licensing. For further information
+** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights. These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 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 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qopengltextureblitter_p.h"
+
+#include <QtGui/QOpenGLBuffer>
+#include <QtGui/QOpenGLShaderProgram>
+#include <QtGui/QOpenGLVertexArrayObject>
+#include <QtGui/QOpenGLContext>
+
+QT_BEGIN_NAMESPACE
+
+static const char vertex_shader150[] =
+ "#version 150 core\n"
+ "in vec3 vertexCoord;"
+ "in vec2 textureCoord;"
+ "out vec2 uv;"
+ "uniform mat4 vertexTransform;"
+ "uniform mat3 textureTransform;"
+ "void main() {"
+ " uv = (textureTransform * vec3(textureCoord,1.0)).xy;"
+ " gl_Position = vertexTransform * vec4(vertexCoord,1.0);"
+ "}";
+
+static const char fragment_shader150[] =
+ "#version 150 core\n"
+ "in vec2 uv;"
+ "out vec4 fragcolor;"
+ "uniform sampler2D textureSampler;"
+ "uniform bool swizzle;"
+ "void main() {"
+ " if (swizzle) {"
+ " fragcolor = texture(textureSampler, uv).bgra;"
+ " } else {"
+ " fragcolor = texture(textureSampler,uv);"
+ " }"
+ "}";
+
+static const char vertex_shader[] =
+ "attribute highp vec3 vertexCoord;"
+ "attribute highp vec2 textureCoord;"
+ "varying highp vec2 uv;"
+ "uniform highp mat4 vertexTransform;"
+ "uniform highp mat3 textureTransform;"
+ "void main() {"
+ " uv = (textureTransform * vec3(textureCoord,1.0)).xy;"
+ " gl_Position = vertexTransform * vec4(vertexCoord,1.0);"
+ "}";
+
+static const char fragment_shader[] =
+ "varying highp vec2 uv;"
+ "uniform sampler2D textureSampler;"
+ "uniform bool swizzle;"
+ "void main() {"
+ " if (swizzle) {"
+ " gl_FragColor = texture2D(textureSampler, uv).bgra;"
+ " } else {"
+ " gl_FragColor = texture2D(textureSampler,uv);"
+ " }"
+ "}";
+
+static const GLfloat vertex_buffer_data[] = {
+ -1,-1, 0,
+ -1, 1, 0,
+ 1,-1, 0,
+ -1, 1, 0,
+ 1,-1, 0,
+ 1, 1, 0
+};
+
+static const GLfloat texture_buffer_data[] = {
+ 0, 0,
+ 0, 1,
+ 1, 0,
+ 0, 1,
+ 1, 0,
+ 1, 1
+};
+
+class TextureBinder
+{
+public:
+ TextureBinder(GLuint textureId)
+ {
+ glBindTexture(GL_TEXTURE_2D, textureId);
+ }
+ ~TextureBinder()
+ {
+ glBindTexture(GL_TEXTURE_2D, 0);
+ }
+};
+
+class QOpenGLTextureBlitterPrivate
+{
+public:
+ enum TextureMatrixUniform {
+ User,
+ Identity,
+ IdentityFlipped
+ };
+
+ QOpenGLTextureBlitterPrivate()
+ : program(0)
+ , vertexCoordAttribPos(0)
+ , vertexTransformUniformPos(0)
+ , textureCoordAttribPos(0)
+ , textureTransformUniformPos(0)
+ , swizzle(false)
+ , swizzleOld(false)
+ , textureMatrixUniformState(User)
+ , vao(new QOpenGLVertexArrayObject())
+ { }
+
+ void blit(GLuint texture, const QMatrix4x4 &vertexTransform, const QMatrix3x3 &textureTransform);
+ void blit(GLuint texture, const QMatrix4x4 &vertexTransform, QOpenGLTextureBlitter::Origin origin);
+
+ void prepareProgram(const QMatrix4x4 &vertexTransform)
+ {
+ vertexBuffer.bind();
+ program->setAttributeBuffer(vertexCoordAttribPos, GL_FLOAT, 0, 3, 0);
+ program->enableAttributeArray(vertexCoordAttribPos);
+ vertexBuffer.release();
+
+ program->setUniformValue(vertexTransformUniformPos, vertexTransform);
+
+ textureBuffer.bind();
+ program->setAttributeBuffer(textureCoordAttribPos, GL_FLOAT, 0, 2, 0);
+ program->enableAttributeArray(textureCoordAttribPos);
+ textureBuffer.release();
+
+ if (swizzle != swizzleOld) {
+ program->setUniformValue(swizzleUniformPos, swizzle);
+ swizzleOld = swizzle;
+ }
+ }
+
+ QOpenGLBuffer vertexBuffer;
+ QOpenGLBuffer textureBuffer;
+ QScopedPointer<QOpenGLShaderProgram> program;
+ GLuint vertexCoordAttribPos;
+ GLuint vertexTransformUniformPos;
+ GLuint textureCoordAttribPos;
+ GLuint textureTransformUniformPos;
+ GLuint swizzleUniformPos;
+ bool swizzle;
+ bool swizzleOld;
+ TextureMatrixUniform textureMatrixUniformState;
+ QScopedPointer<QOpenGLVertexArrayObject> vao;
+};
+
+void QOpenGLTextureBlitterPrivate::blit(GLuint texture,
+ const QMatrix4x4 &vertexTransform,
+ const QMatrix3x3 &textureTransform)
+{
+ TextureBinder binder(texture);
+ prepareProgram(vertexTransform);
+
+ program->setUniformValue(textureTransformUniformPos, textureTransform);
+ textureMatrixUniformState = User;
+
+ glDrawArrays(GL_TRIANGLES, 0, 6);
+}
+
+void QOpenGLTextureBlitterPrivate::blit(GLuint texture,
+ const QMatrix4x4 &vertexTransform,
+ QOpenGLTextureBlitter::Origin origin)
+{
+ TextureBinder binder(texture);
+ prepareProgram(vertexTransform);
+
+ if (origin == QOpenGLTextureBlitter::OriginTopLeft) {
+ if (textureMatrixUniformState != IdentityFlipped) {
+ QMatrix3x3 flipped;
+ flipped(1,1) = -1;
+ program->setUniformValue(textureTransformUniformPos, flipped);
+ textureMatrixUniformState = IdentityFlipped;
+ }
+ } else if (textureMatrixUniformState != Identity) {
+ program->setUniformValue(textureTransformUniformPos, QMatrix3x3());
+ textureMatrixUniformState = Identity;
+ }
+
+ glDrawArrays(GL_TRIANGLES, 0, 6);
+}
+
+QOpenGLTextureBlitter::QOpenGLTextureBlitter()
+ : d_ptr(new QOpenGLTextureBlitterPrivate)
+{
+}
+
+QOpenGLTextureBlitter::~QOpenGLTextureBlitter()
+{
+}
+
+bool QOpenGLTextureBlitter::create()
+{
+ QOpenGLContext *currentContext = QOpenGLContext::currentContext();
+ if (!currentContext)
+ return false;
+
+ Q_D(QOpenGLTextureBlitter);
+
+ d->vao->create();
+ d->vao->bind();
+
+ if (d->program)
+ return true;
+
+ d->program.reset(new QOpenGLShaderProgram());
+
+ QSurfaceFormat format = currentContext->format();
+
+ if (format.profile() == QSurfaceFormat::CoreProfile && format.version() >= qMakePair(3,2)) {
+ d->program->addShaderFromSourceCode(QOpenGLShader::Vertex, vertex_shader150);
+ d->program->addShaderFromSourceCode(QOpenGLShader::Fragment, fragment_shader150);
+ } else {
+ d->program->addShaderFromSourceCode(QOpenGLShader::Vertex, vertex_shader);
+ d->program->addShaderFromSourceCode(QOpenGLShader::Fragment, fragment_shader);
+ }
+ d->program->link();
+ if (!d->program->isLinked()) {
+ qWarning() << Q_FUNC_INFO << "Could not link shader program:\n" << d->program->log();
+ return false;
+ }
+
+ d->program->bind();
+
+ d->vertexBuffer.create();
+ d->vertexBuffer.bind();
+ d->vertexBuffer.allocate(vertex_buffer_data, sizeof(vertex_buffer_data) * sizeof(vertex_buffer_data[0]));
+ d->vertexBuffer.release();
+
+ d->textureBuffer.create();
+ d->textureBuffer.bind();
+ d->textureBuffer.allocate(texture_buffer_data, sizeof(texture_buffer_data) * sizeof(texture_buffer_data[0]));
+ d->textureBuffer.release();
+
+ d->vertexCoordAttribPos = d->program->attributeLocation("vertexCoord");
+ d->vertexTransformUniformPos = d->program->uniformLocation("vertexTransform");
+ d->textureCoordAttribPos = d->program->attributeLocation("textureCoord");
+ d->textureTransformUniformPos = d->program->uniformLocation("textureTransform");
+ d->swizzleUniformPos = d->program->uniformLocation("swizzle");
+
+ d->program->setUniformValue(d->swizzleUniformPos,false);
+
+ d->vao->release();
+
+ return true;
+}
+
+void QOpenGLTextureBlitter::destroy()
+{
+ Q_D(QOpenGLTextureBlitter);
+ d->program.reset();
+ d->vertexBuffer.destroy();
+ d->textureBuffer.destroy();
+ d->vao.reset();
+}
+
+void QOpenGLTextureBlitter::bind()
+{
+ Q_D(QOpenGLTextureBlitter);
+
+ d->vao->bind();
+
+ d->program->bind();
+
+ d->vertexBuffer.bind();
+ d->program->setAttributeBuffer(d->vertexCoordAttribPos, GL_FLOAT, 0, 3, 0);
+ d->program->enableAttributeArray(d->vertexCoordAttribPos);
+ d->vertexBuffer.release();
+
+ d->textureBuffer.bind();
+ d->program->setAttributeBuffer(d->textureCoordAttribPos, GL_FLOAT, 0, 2, 0);
+ d->program->enableAttributeArray(d->textureCoordAttribPos);
+ d->textureBuffer.release();
+}
+
+void QOpenGLTextureBlitter::release()
+{
+ Q_D(QOpenGLTextureBlitter);
+ d->program->release();
+ d->vao->release();
+}
+
+void QOpenGLTextureBlitter::setSwizzleRB(bool swizzle)
+{
+ Q_D(QOpenGLTextureBlitter);
+ d->swizzle = swizzle;
+}
+
+void QOpenGLTextureBlitter::blit(GLuint texture,
+ const QMatrix4x4 &targetTransform,
+ Origin sourceOrigin)
+{
+ Q_D(QOpenGLTextureBlitter);
+ d->blit(texture,targetTransform, sourceOrigin);
+}
+
+void QOpenGLTextureBlitter::blit(GLuint texture,
+ const QMatrix4x4 &targetTransform,
+ const QMatrix3x3 &sourceTransform)
+{
+ Q_D(QOpenGLTextureBlitter);
+ d->blit(texture, targetTransform, sourceTransform);
+}
+
+QMatrix4x4 QOpenGLTextureBlitter::targetTransform(const QRectF &target,
+ const QRect &viewport,
+ Origin origin)
+{
+ qreal x_scale = target.size().width() / viewport.width();
+ qreal y_scale = target.size().height() / viewport.height();
+
+ const QPointF relative_to_viewport = target.topLeft() - viewport.topLeft();
+ qreal x_translate = ((relative_to_viewport.x() / viewport.width()) + (x_scale / 2)) * 2 - 1;
+ qreal y_translate = ((relative_to_viewport.y() / viewport.height()) + (y_scale / 2)) * 2 - 1;
+
+ if (origin == OriginTopLeft) {
+ y_translate = -y_translate;
+ }
+
+ QMatrix4x4 vertexMatrix;
+
+ vertexMatrix.translate(x_translate, y_translate);
+ vertexMatrix.scale(x_scale, y_scale);
+ return vertexMatrix;
+}
+
+QMatrix3x3 QOpenGLTextureBlitter::sourceTransform(const QRectF &subTexture,
+ const QSize &textureSize,
+ Origin origin)
+{
+ qreal x_scale = subTexture.width() / textureSize.width();
+ qreal y_scale = subTexture.height() / textureSize.height();
+
+ const QPointF topLeft = subTexture.topLeft();
+ qreal x_translate = topLeft.x() / textureSize.width();
+ qreal y_translate = topLeft.y() / textureSize.height();
+
+ if (origin == OriginTopLeft) {
+ y_translate += (y_translate * 2) + y_scale;
+ y_scale = y_scale - 1;
+ }
+
+ QMatrix3x3 matrix;
+ matrix(0,2) = x_translate;
+ matrix(1,2) = y_translate;
+
+ matrix(0,0) = x_scale;
+ matrix(1,1) = y_scale;
+
+ return matrix;
+}
+
+QT_END_NAMESPACE
diff --git a/src/gui/opengl/qopengltextureblitter_p.h b/src/gui/opengl/qopengltextureblitter_p.h
new file mode 100644
index 0000000000..5164d8630e
--- /dev/null
+++ b/src/gui/opengl/qopengltextureblitter_p.h
@@ -0,0 +1,86 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Digia. For licensing terms and
+** conditions see http://qt.digia.com/licensing. For further information
+** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights. These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 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 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QOPENGLTEXTUREBLITTER_P_H
+#define QOPENGLTEXTUREBLITTER_P_H
+
+#include <QtGui/qopengl.h>
+#include <QtGui/QMatrix3x3>
+
+QT_BEGIN_NAMESPACE
+
+class QOpenGLTextureBlitterPrivate;
+
+
+class Q_GUI_EXPORT QOpenGLTextureBlitter
+{
+public:
+ QOpenGLTextureBlitter();
+ ~QOpenGLTextureBlitter();
+
+ enum Origin {
+ OriginBottomLeft,
+ OriginTopLeft
+ };
+
+ bool create();
+ void destroy();
+
+ void bind();
+ void release();
+
+ void setSwizzleRB(bool swizzle);
+
+ void blit(GLuint texture, const QMatrix4x4 &targetTransform, Origin sourceOrigin);
+ void blit(GLuint texture, const QMatrix4x4 &targetTransform, const QMatrix3x3 &sourceTransform);
+
+ static QMatrix4x4 targetTransform(const QRectF &target, const QRect &viewport, Origin origin);
+ static QMatrix3x3 sourceTransform(const QRectF &subTexture, const QSize &textureSize, Origin origin);
+
+private:
+ Q_DISABLE_COPY(QOpenGLTextureBlitter);
+ Q_DECLARE_PRIVATE(QOpenGLTextureBlitter);
+ QScopedPointer<QOpenGLTextureBlitterPrivate> d_ptr;
+};
+
+QT_END_NAMESPACE
+
+#endif //QOPENGLTEXTUREBLITTER_P_H
diff --git a/tests/manual/manual.pro b/tests/manual/manual.pro
index 381922288f..c9072c4e9e 100644
--- a/tests/manual/manual.pro
+++ b/tests/manual/manual.pro
@@ -47,6 +47,8 @@ unc
!contains(QT_CONFIG, openssl):!contains(QT_CONFIG, openssl-linked):SUBDIRS -= qssloptions
+contains(QT_CONFIG, opengl):SUBDIRS += qopengltextureblitter
+
win32 {
SUBDIRS -= network_remote_stresstest network_stresstest
# disable some tests on wince because of missing dependencies
diff --git a/tests/manual/qopengltextureblitter/main.cpp b/tests/manual/qopengltextureblitter/main.cpp
new file mode 100644
index 0000000000..3e9c30932a
--- /dev/null
+++ b/tests/manual/qopengltextureblitter/main.cpp
@@ -0,0 +1,53 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Digia. For licensing terms and
+** conditions see http://qt.digia.com/licensing. For further information
+** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights. These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 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 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qopengltextureblitwindow.h"
+#include <QtGui/QGuiApplication>
+
+int main(int argc, char **argv)
+{
+ QGuiApplication app(argc, argv);
+
+ QOpenGLTextureBlitWindow window;
+ window.show();
+
+ return app.exec();
+}
diff --git a/tests/manual/qopengltextureblitter/qopengltextureblitter.pro b/tests/manual/qopengltextureblitter/qopengltextureblitter.pro
new file mode 100644
index 0000000000..95f1c14e5a
--- /dev/null
+++ b/tests/manual/qopengltextureblitter/qopengltextureblitter.pro
@@ -0,0 +1,12 @@
+TEMPLATE = app
+TARGET = qopengltextureblitter
+INCLUDEPATH += .
+
+QT+=gui-private
+# Input
+HEADERS += \
+ qopengltextureblitwindow.h
+
+SOURCES += \
+ main.cpp \
+ qopengltextureblitwindow.cpp
diff --git a/tests/manual/qopengltextureblitter/qopengltextureblitwindow.cpp b/tests/manual/qopengltextureblitter/qopengltextureblitwindow.cpp
new file mode 100644
index 0000000000..0dac669887
--- /dev/null
+++ b/tests/manual/qopengltextureblitter/qopengltextureblitwindow.cpp
@@ -0,0 +1,167 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Digia. For licensing terms and
+** conditions see http://qt.digia.com/licensing. For further information
+** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights. These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 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 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qopengltextureblitwindow.h"
+
+#include <QtGui/QPainter>
+#include <QtGui/QOpenGLTexture>
+#include <QtGui/QMatrix4x4>
+
+#include <QtCore/QCoreApplication>
+#include <QtCore/QDebug>
+
+QOpenGLTextureBlitWindow::QOpenGLTextureBlitWindow()
+ : QWindow()
+ , m_context(new QOpenGLContext(this))
+{
+ resize(500,500);
+ setSurfaceType(OpenGLSurface);
+ QSurfaceFormat surfaceFormat = format();
+ if (QCoreApplication::arguments().contains(QStringLiteral("-coreprofile"))) {
+ surfaceFormat.setVersion(3,2);
+ surfaceFormat.setProfile(QSurfaceFormat::CoreProfile);
+ }
+
+ setFormat(surfaceFormat);
+ create();
+ m_context->setFormat(surfaceFormat);
+ m_context->create();
+
+ m_context->makeCurrent(this);
+
+ m_blitter.create();
+}
+
+void QOpenGLTextureBlitWindow::render()
+{
+ m_context->makeCurrent(this);
+
+ QRect viewport(0,0,dWidth(),dHeight());
+ glViewport(0,0,dWidth(), dHeight());
+
+ glClearColor(0.f, .6f, .0f, 0.f);
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+ QOpenGLTexture texture(m_image);
+ texture.create();
+
+ QRectF topLeft(QPointF(0,0), QPointF(dWidth()/2.0, dHeight()/2.0));
+ QRectF topRight(QPointF(dWidth()/2.0,0), QPointF(dWidth(), dHeight()/2.0));
+ QRectF bottomLeft(QPointF(0, dHeight()/2.0), QPointF(dWidth() /2.0, dHeight()));
+ QRectF bottomRight(QPoint(dWidth()/2.0, dHeight()/2.0), QPointF(dWidth(), dHeight()));
+
+ QOpenGLTextureBlitter::Origin topLeftOrigin = QOpenGLTextureBlitter::OriginTopLeft;
+ QOpenGLTextureBlitter::Origin bottomLeftOrigin = QOpenGLTextureBlitter::OriginBottomLeft;
+ QMatrix4x4 topRightVertexFlipped = QOpenGLTextureBlitter::targetTransform(topRight, viewport, topLeftOrigin);
+ QMatrix4x4 bottomLeftVertex = QOpenGLTextureBlitter::targetTransform(bottomLeft, viewport, topLeftOrigin);
+ QMatrix4x4 bottomRightVertexFlipped = QOpenGLTextureBlitter::targetTransform(bottomRight, viewport, topLeftOrigin);
+
+ QMatrix3x3 texTopLeft = QOpenGLTextureBlitter::sourceTransform(topLeft, m_image.size(), topLeftOrigin);
+ QMatrix3x3 texTopRight = QOpenGLTextureBlitter::sourceTransform(topRight, m_image.size(), topLeftOrigin);
+ QMatrix3x3 texBottomLeft = QOpenGLTextureBlitter::sourceTransform(bottomLeft, m_image.size(), topLeftOrigin);
+ QMatrix3x3 texBottomRight = QOpenGLTextureBlitter::sourceTransform(bottomRight, m_image.size(), bottomLeftOrigin);
+
+ QSizeF subSize(topLeft.width()/2, topLeft.height()/2);
+ QRectF subTopLeft(topLeft.topLeft(), subSize);
+ QRectF subTopRight(QPointF(topLeft.topLeft().x() + topLeft.width() / 2, topLeft.topLeft().y()),subSize);
+ QRectF subBottomLeft(QPointF(topLeft.topLeft().x(), topLeft.topLeft().y() + topLeft.height() / 2), subSize);
+ QRectF subBottomRight(QPointF(topLeft.topLeft().x() + topLeft.width() / 2, topLeft.topLeft().y() + topLeft.height() / 2), subSize);
+
+ QMatrix4x4 subTopLeftVertex = QOpenGLTextureBlitter::targetTransform(subTopLeft, viewport, topLeftOrigin);
+ QMatrix4x4 subTopRightVertex = QOpenGLTextureBlitter::targetTransform(subTopRight, viewport, topLeftOrigin);
+ QMatrix4x4 subBottomLeftVertex = QOpenGLTextureBlitter::targetTransform(subBottomLeft, viewport, topLeftOrigin);
+ QMatrix4x4 subBottomRightVertex = QOpenGLTextureBlitter::targetTransform(subBottomRight, viewport, topLeftOrigin);
+
+ m_blitter.bind();
+ m_blitter.blit(texture.textureId(), subTopLeftVertex, texBottomRight);
+ m_blitter.blit(texture.textureId(), subTopRightVertex, texBottomLeft);
+ m_blitter.blit(texture.textureId(), subBottomLeftVertex, texTopRight);
+ m_blitter.blit(texture.textureId(), subBottomRightVertex, texTopLeft);
+
+ m_blitter.blit(texture.textureId(), topRightVertexFlipped, topLeftOrigin);
+ m_blitter.blit(texture.textureId(), bottomLeftVertex, bottomLeftOrigin);
+
+ m_blitter.setSwizzleRB(true);
+ m_blitter.blit(texture.textureId(), bottomRightVertexFlipped, texTopLeft);
+ m_blitter.setSwizzleRB(false);
+ m_blitter.release();
+
+ m_context->swapBuffers(this);
+}
+
+
+void QOpenGLTextureBlitWindow::exposeEvent(QExposeEvent *event)
+{
+ Q_UNUSED(event);
+ render();
+}
+
+void QOpenGLTextureBlitWindow::resizeEvent(QResizeEvent *event)
+{
+ Q_UNUSED(event);
+ m_image = QImage(size() * devicePixelRatio(), QImage::Format_ARGB32_Premultiplied);
+
+ m_image.fill(Qt::gray);
+
+ QPainter p(&m_image);
+
+ QPen pen(Qt::red);
+ pen.setWidth(5);
+ p.setPen(pen);
+
+ QFont font = p.font();
+ font.setPixelSize(qMin(m_image.height(), m_image.width()) / 20);
+ p.setFont(font);
+
+ int dx = dWidth() / 5;
+ int dy = dHeight() / 5;
+ for (int y = 0; y < 5; y++) {
+ for (int x = 0; x < 5; x++) {
+ QRect textRect(x * dx, y*dy, dx,dy);
+ QString text = QString("[%1,%2]").arg(x).arg(y);
+ p.drawText(textRect,text);
+ }
+ }
+
+ p.drawRect(QRectF(2.5,2.5,dWidth() - 5, dHeight() - 5));
+
+}
+
diff --git a/tests/manual/qopengltextureblitter/qopengltextureblitwindow.h b/tests/manual/qopengltextureblitter/qopengltextureblitwindow.h
new file mode 100644
index 0000000000..855e173b1a
--- /dev/null
+++ b/tests/manual/qopengltextureblitter/qopengltextureblitwindow.h
@@ -0,0 +1,69 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Digia. For licensing terms and
+** conditions see http://qt.digia.com/licensing. For further information
+** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights. These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 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 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QOPENGLTEXTUREBLITWINDOW_H
+#define QOPENGLTEXTUREBLITWINDOW_H
+
+#include <QtGui/QWindow>
+#include <QtGui/QOpenGLContext>
+#include <QtGui/private/qopengltextureblitter_p.h>
+
+class QOpenGLTextureBlitWindow : public QWindow
+{
+ Q_OBJECT
+public:
+ QOpenGLTextureBlitWindow();
+
+ void render();
+protected:
+ void exposeEvent(QExposeEvent *event);
+ void resizeEvent(QResizeEvent *event);
+
+private:
+ qreal dWidth() const { return width() * devicePixelRatio(); }
+ qreal dHeight() const { return height() * devicePixelRatio(); }
+
+ QScopedPointer<QOpenGLContext> m_context;
+ QOpenGLTextureBlitter m_blitter;
+ QImage m_image;
+};
+
+#endif
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