diff options
Diffstat (limited to 'src/opengl/doc')
9 files changed, 5 insertions, 684 deletions
diff --git a/src/opengl/doc/snippets/code/src_opengl_qgl.cpp b/src/opengl/doc/snippets/code/src_opengl_qgl.cpp deleted file mode 100644 index a73ee2cdc5..0000000000 --- a/src/opengl/doc/snippets/code/src_opengl_qgl.cpp +++ /dev/null @@ -1,182 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the documentation of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** 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 https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, 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." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -//! [0] -QGLFormat fmt; -fmt.setAlpha(true); -fmt.setStereo(true); -QGLFormat::setDefaultFormat(fmt); -//! [0] - - -//! [1] -QGLFormat fmt; -fmt.setDoubleBuffer(false); // single buffer -fmt.setDirectRendering(false); // software rendering -MyGLWidget* myWidget = new MyGLWidget(fmt, ...); -//! [1] - - -//! [2] -QGLFormat fmt; -fmt.setOverlay(true); -fmt.setStereo(true); -MyGLWidget* myWidget = new MyGLWidget(fmt, ...); -if (!myWidget->format().stereo()) { - // ok, goggles off - if (!myWidget->format().hasOverlay()) { - qFatal("Cool hardware required"); - } -} -//! [2] - - -//! [3] -// The rendering in MyGLWidget depends on using -// stencil buffer and alpha channel -MyGLWidget::MyGLWidget(QWidget* parent) - : QGLWidget(QGLFormat(QGL::StencilBuffer | QGL::AlphaChannel), parent) -{ - if (!format().stencil()) - qWarning("Could not get stencil buffer; results will be suboptimal"); - if (!format().alpha()) - qWarning("Could not get alpha channel; results will be suboptimal"); - ... -} -//! [3] - - -//! [4] -QApplication a(argc, argv); -QGLFormat f; -f.setDoubleBuffer(false); -QGLFormat::setDefaultFormat(f); -//! [4] - - -//! [5] -QGLFormat f = QGLFormat::defaultOverlayFormat(); -f.setDoubleBuffer(true); -QGLFormat::setDefaultOverlayFormat(f); -//! [5] - - -//! [6] -// ...continued from above -MyGLWidget* myWidget = new MyGLWidget(QGLFormat(QGL::HasOverlay), ...); -if (myWidget->format().hasOverlay()) { - // Yes, we got an overlay, let's check _its_ format: - QGLContext* olContext = myWidget->overlayContext(); - if (olContext->format().doubleBuffer()) - ; // yes, we got a double buffered overlay - else - ; // no, only single buffered overlays are available -} -//! [6] - - -//! [7] -QGLContext *cx; -// ... -QGLFormat f; -f.setStereo(true); -cx->setFormat(f); -if (!cx->create()) - exit(); // no OpenGL support, or cannot render on the specified paintdevice -if (!cx->format().stereo()) - exit(); // could not create stereo context -//! [7] - - -//! [8] -class MyGLDrawer : public QGLWidget -{ - Q_OBJECT // must include this if you use Qt signals/slots - -public: - MyGLDrawer(QWidget *parent) - : QGLWidget(parent) {} - -protected: - - void initializeGL() override - { - // Set up the rendering context, define display lists etc.: - ... - glClearColor(0.0, 0.0, 0.0, 0.0); - glEnable(GL_DEPTH_TEST); - ... - } - - void resizeGL(int w, int h) override - { - // setup viewport, projection etc.: - glViewport(0, 0, (GLint)w, (GLint)h); - ... - glFrustum(...); - ... - } - - void paintGL() override - { - // draw the scene: - ... - glRotatef(...); - glMaterialfv(...); - glBegin(GL_QUADS); - glVertex3f(...); - glVertex3f(...); - ... - glEnd(); - ... - } - -}; -//! [8] diff --git a/src/opengl/doc/snippets/code/src_opengl_qglbuffer.cpp b/src/opengl/doc/snippets/code/src_opengl_qglbuffer.cpp deleted file mode 100644 index 11ef88ab37..0000000000 --- a/src/opengl/doc/snippets/code/src_opengl_qglbuffer.cpp +++ /dev/null @@ -1,60 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2018 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the documentation of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** 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 https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, 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." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -//! [0] - QGLBuffer buffer1(QGLBuffer::IndexBuffer); - buffer1.create(); - - QGLBuffer buffer2 = buffer1; -//! [0] - -//! [1] - QGLBuffer::release(QGLBuffer::VertexBuffer); -//! [1] diff --git a/src/opengl/doc/snippets/code/src_opengl_qglcolormap.cpp b/src/opengl/doc/snippets/code/src_opengl_qglcolormap.cpp deleted file mode 100644 index 12a089944f..0000000000 --- a/src/opengl/doc/snippets/code/src_opengl_qglcolormap.cpp +++ /dev/null @@ -1,71 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the documentation of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** 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 https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, 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." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -//! [0] -#include <QApplication> -#include <QGLColormap> - -int main() -{ - QApplication app(argc, argv); - - MySuperGLWidget widget; // a QGLWidget in color-index mode - QGLColormap colormap; - - // This will fill the colormap with colors ranging from - // black to white. - for (int i = 0; i < colormap.size(); i++) - colormap.setEntry(i, qRgb(i, i, i)); - - widget.setColormap(colormap); - widget.show(); - return app.exec(); -} -//! [0] diff --git a/src/opengl/doc/snippets/code/src_opengl_qglfunctions.cpp b/src/opengl/doc/snippets/code/src_opengl_qglfunctions.cpp deleted file mode 100644 index c848ae7ede..0000000000 --- a/src/opengl/doc/snippets/code/src_opengl_qglfunctions.cpp +++ /dev/null @@ -1,86 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2018 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the documentation of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** 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 https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, 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." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -//! [0] - class MyGLWidget : public QGLWidget, protected QGLFunctions - { - Q_OBJECT - public: - MyGLWidget(QWidget *parent = 0) : QGLWidget(parent) {} - - protected: - void initializeGL(); - void paintGL(); - }; - - void MyGLWidget::initializeGL() - { - initializeGLFunctions(); - } -//! [0] - -//! [1] - void MyGLWidget::paintGL() - { - glActiveTexture(GL_TEXTURE1); - glBindTexture(GL_TEXTURE_2D, textureId); - ... - } -//! [1] - -//! [2] - QGLFunctions glFuncs(QGLContext::currentContext()); - glFuncs.glActiveTexture(GL_TEXTURE1); -//! [2] - -//! [3] - QGLFunctions funcs(QGLContext::currentContext()); - bool npot = funcs.hasOpenGLFeature(QGLFunctions::NPOTTextures); -//! [3] diff --git a/src/opengl/doc/snippets/code/src_opengl_qglpixelbuffer.cpp b/src/opengl/doc/snippets/code/src_opengl_qglpixelbuffer.cpp deleted file mode 100644 index f6fbe6ddb4..0000000000 --- a/src/opengl/doc/snippets/code/src_opengl_qglpixelbuffer.cpp +++ /dev/null @@ -1,69 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the documentation of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** 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 https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, 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." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -//! [0] -QGLPixelBuffer pbuffer(...); -... -pbuffer.makeCurrent(); -GLuint dynamicTexture = pbuffer.generateDynamicTexture(); -pbuffer.bindToDynamicTexture(dynamicTexture); -... -pbuffer.releaseFromDynamicTexture(); -//! [0] - - -//! [1] -QGLPixelBuffer pbuffer(...); -... -pbuffer.makeCurrent(); -GLuint dynamicTexture = pbuffer.generateDynamicTexture(); -... -pbuffer.updateDynamicTexture(dynamicTexture); -//! [1] diff --git a/src/opengl/doc/snippets/code/src_opengl_qglshaderprogram.cpp b/src/opengl/doc/snippets/code/src_opengl_qglshaderprogram.cpp deleted file mode 100644 index 04492499e8..0000000000 --- a/src/opengl/doc/snippets/code/src_opengl_qglshaderprogram.cpp +++ /dev/null @@ -1,104 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the documentation of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** 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 https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, 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." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -//! [0] -QGLShader shader(QGLShader::Vertex); -shader.compileSourceCode(code); - -QGLShaderProgram program(context); -program.addShader(shader); -program.link(); - -program.bind(); -//! [0] - -//! [1] -program.addShaderFromSourceCode(QGLShader::Vertex, - "attribute highp vec4 vertex;\n" - "uniform highp mat4 matrix;\n" - "void main(void)\n" - "{\n" - " gl_Position = matrix * vertex;\n" - "}"); -program.addShaderFromSourceCode(QGLShader::Fragment, - "uniform mediump vec4 color;\n" - "void main(void)\n" - "{\n" - " gl_FragColor = color;\n" - "}"); -program.link(); -program.bind(); - -int vertexLocation = program.attributeLocation("vertex"); -int matrixLocation = program.uniformLocation("matrix"); -int colorLocation = program.uniformLocation("color"); -//! [1] - -//! [2] -static GLfloat const triangleVertices[] = { - 60.0f, 10.0f, 0.0f, - 110.0f, 110.0f, 0.0f, - 10.0f, 110.0f, 0.0f -}; - -QColor color(0, 255, 0, 255); - -QMatrix4x4 pmvMatrix; -pmvMatrix.ortho(rect()); - -program.enableAttributeArray(vertexLocation); -program.setAttributeArray(vertexLocation, triangleVertices, 3); -program.setUniformValue(matrixLocation, pmvMatrix); -program.setUniformValue(colorLocation, color); - -glDrawArrays(GL_TRIANGLES, 0, 3); - -program.disableAttributeArray(vertexLocation); -//! [2] diff --git a/src/opengl/doc/snippets/code/src_opengl_qgraphicsshadereffect.cpp b/src/opengl/doc/snippets/code/src_opengl_qgraphicsshadereffect.cpp deleted file mode 100644 index 461e96e094..0000000000 --- a/src/opengl/doc/snippets/code/src_opengl_qgraphicsshadereffect.cpp +++ /dev/null @@ -1,95 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2018 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the documentation of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** 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 https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, 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." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -//! [0] - static char const colorizeShaderCode[] = - "uniform lowp vec4 effectColor;\n" - "lowp vec4 customShader(lowp sampler2D imageTexture, highp vec2 textureCoords) {\n" - " vec4 src = texture2D(imageTexture, textureCoords);\n" - " float gray = dot(src.rgb, vec3(0.212671, 0.715160, 0.072169));\n" - " vec4 colorize = 1.0-((1.0-gray)*(1.0-effectColor));\n" - " return vec4(colorize.rgb, src.a);\n" - "}"; -//! [0] - -//! [1] - class ColorizeEffect : public QGraphicsShaderEffect - { - Q_OBJECT - public: - ColorizeEffect(QObject *parent = 0) - : QGraphicsShaderEffect(parent), color(Qt::black) - { - setPixelShaderFragment(colorizeShaderCode); - } - - QColor effectColor() const { return color; } - void setEffectColor(const QColor& c) - { - color = c; - setUniformsDirty(); - } - - protected: - void setUniforms(QGLShaderProgram *program) - { - program->setUniformValue("effectColor", color); - } - - private: - QColor color; - }; -//! [1] - -//! [2] - lowp vec4 customShader(lowp sampler2D imageTexture, highp vec2 textureCoords) { - return texture2D(imageTexture, textureCoords); - } -//! [2] diff --git a/src/opengl/doc/src/qtopengl-examples.qdoc b/src/opengl/doc/src/qtopengl-examples.qdoc index de80c92883..8770d6247e 100644 --- a/src/opengl/doc/src/qtopengl-examples.qdoc +++ b/src/opengl/doc/src/qtopengl-examples.qdoc @@ -33,12 +33,11 @@ \image opengl-examples.png - These examples describe how to use the \l {Qt OpenGL} module. For new code, - please use the OpenGL classes in the \l {Qt GUI} module. + These examples describe how to use the \l {Qt OpenGL} module. - Qt provides support for integration with OpenGL implementations on all - platforms, giving developers the opportunity to display hardware accelerated - 3D graphics alongside a more conventional user interface. + Qt provides support for integration with OpenGL implementations, giving + developers the opportunity to display hardware accelerated 3D graphics + alongside a more conventional user interface. These examples demonstrate the basic techniques used to take advantage of OpenGL in Qt applications. diff --git a/src/opengl/doc/src/qtopengl-module.qdoc b/src/opengl/doc/src/qtopengl-module.qdoc index 336d37c73f..24df4aec76 100644 --- a/src/opengl/doc/src/qtopengl-module.qdoc +++ b/src/opengl/doc/src/qtopengl-module.qdoc @@ -34,8 +34,7 @@ \brief The Qt OpenGL module offers classes that make it easy to use OpenGL in Qt applications. - \warning This module should not be used anymore for new code. Please - use the corresponding OpenGL classes in \l{Qt GUI}. + \warning This module should not be used anymore for new code. OpenGL is a standard API for rendering 3D graphics. OpenGL only deals with 3D rendering and provides little or no support for GUI @@ -48,9 +47,6 @@ the United States and other countries. The Qt OpenGL module makes it easy to use OpenGL in Qt applications. - It provides an OpenGL widget class that can be used just like any - other Qt widget, except that it opens an OpenGL display buffer where - you can use the OpenGL API to render the contents. To include the definitions of the module's classes, use the following directive: @@ -63,11 +59,4 @@ \snippet code/doc_src_qtopengl.pro 1 \endif - - The Qt OpenGL module is implemented as a platform-independent Qt/C++ - wrapper around the platform-dependent GLX (version 1.3 or later), - WGL, or AGL C APIs. Although the basic functionality provided is very - similar to Mark Kilgard's GLUT library, applications using the Qt - OpenGL module can take advantage of the whole Qt API for - non-OpenGL-specific GUI functionality. */ |