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Diffstat (limited to 'examples/opengl/legacy/pbuffers/glwidget.cpp')
| -rw-r--r-- | examples/opengl/legacy/pbuffers/glwidget.cpp | 256 |
1 files changed, 0 insertions, 256 deletions
diff --git a/examples/opengl/legacy/pbuffers/glwidget.cpp b/examples/opengl/legacy/pbuffers/glwidget.cpp deleted file mode 100644 index 5763436d5e..0000000000 --- a/examples/opengl/legacy/pbuffers/glwidget.cpp +++ /dev/null @@ -1,256 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the examples 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." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "glwidget.h" -#include <math.h> - -#include "cube.h" - -#include <QGLPixelBuffer> - -#ifndef GL_MULTISAMPLE -#define GL_MULTISAMPLE 0x809D -#endif - -static GLfloat colorArray[][4] = { - {0.243f, 0.423f, 0.125f, 1.0f}, - {0.176f, 0.31f, 0.09f, 1.0f}, - {0.4f, 0.69f, 0.212f, 1.0f}, - {0.317f, 0.553f, 0.161f, 1.0f} -}; - -GLWidget::GLWidget(QWidget *parent) - : QGLWidget(QGLFormat(QGL::SampleBuffers), parent) - , geom(0) - , cube(0) -{ - // create the pbuffer - QGLFormat pbufferFormat = format(); - pbufferFormat.setSampleBuffers(false); - pbuffer = new QGLPixelBuffer(QSize(512, 512), pbufferFormat, this); - setWindowTitle(tr("OpenGL pbuffers")); - initializeGeometry(); -} - -GLWidget::~GLWidget() -{ - pbuffer->releaseFromDynamicTexture(); - glDeleteTextures(1, &dynamicTexture); - delete pbuffer; - - qDeleteAll(cubes); - qDeleteAll(tiles); - delete cube; -} - -void GLWidget::initializeGL() -{ - initCommon(); - glShadeModel(GL_SMOOTH); - glEnable(GL_LIGHTING); - glEnable(GL_LIGHT0); - static GLfloat lightPosition[4] = { 0.5, 5.0, 7.0, 1.0 }; - glLightfv(GL_LIGHT0, GL_POSITION, lightPosition); - initPbuffer(); - cube->startAnimation(); - connect(cube, SIGNAL(changed()), this, SLOT(update())); - for (int i = 0; i < 3; ++i) - { - cubes[i]->startAnimation(); - connect(cubes[i], SIGNAL(changed()), this, SLOT(update())); - } -} - -void GLWidget::paintGL() -{ - pbuffer->makeCurrent(); - drawPbuffer(); - // On direct render platforms, drawing onto the pbuffer context above - // automatically updates the dynamic texture. For cases where rendering - // directly to a texture is not supported, explicitly copy. - if (!hasDynamicTextureUpdate) - pbuffer->updateDynamicTexture(dynamicTexture); - makeCurrent(); - - // Use the pbuffer as a texture to render the scene - glBindTexture(GL_TEXTURE_2D, dynamicTexture); - - // set up to render the scene - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - glLoadIdentity(); - glTranslatef(0.0f, 0.0f, -10.0f); - - // draw the background - glPushMatrix(); - glScalef(aspect, 1.0f, 1.0f); - for (int i = 0; i < tiles.count(); ++i) - tiles[i]->draw(); - glPopMatrix(); - - // draw the bouncing cubes - for (int i = 0; i < cubes.count(); ++i) - cubes[i]->draw(); -} - -void GLWidget::initializeGeometry() -{ - geom = new Geometry(); - CubeBuilder cBuilder(geom, 0.5); - cBuilder.setColor(QColor(255, 255, 255, 212)); - // build the 3 bouncing, spinning cubes - for (int i = 3; i > 0; --i) - cubes.append(cBuilder.newCube(QVector3D((float)(i-1), -1.5f, 5 - i))); - - // build the spinning cube which goes in the dynamic texture - cube = cBuilder.newCube(); - cube->removeBounce(); - - // build the background tiles - TileBuilder tBuilder(geom); - tBuilder.setColor(QColor(Qt::white)); - for (int c = -2; c <= +2; ++c) - for (int r = -2; r <= +2; ++r) - tiles.append(tBuilder.newTile(QVector3D(c, r, 0))); - - // graded backdrop for the pbuffer scene - TileBuilder bBuilder(geom, 0.0f, 2.0f); - bBuilder.setColor(QColor(102, 176, 54, 210)); - backdrop = bBuilder.newTile(QVector3D(0.0f, 0.0f, -1.5f)); - backdrop->setColors(colorArray); -} - -void GLWidget::initCommon() -{ - qglClearColor(QColor(Qt::darkGray)); - - glEnable(GL_DEPTH_TEST); - glEnable(GL_CULL_FACE); - glEnable(GL_MULTISAMPLE); - - glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); - glEnable(GL_BLEND); - - glEnable(GL_TEXTURE_2D); - - geom->loadArrays(); -} - -void GLWidget::perspectiveProjection() -{ - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); -#ifdef QT_OPENGL_ES - glFrustumf(-aspect, +aspect, -1.0, +1.0, 4.0, 15.0); -#else - glFrustum(-aspect, +aspect, -1.0, +1.0, 4.0, 15.0); -#endif - glMatrixMode(GL_MODELVIEW); -} - -void GLWidget::orthographicProjection() -{ - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); -#ifdef QT_OPENGL_ES - glOrthof(-1.0, +1.0, -1.0, +1.0, -90.0, +90.0); -#else - glOrtho(-1.0, +1.0, -1.0, +1.0, -90.0, +90.0); -#endif - glMatrixMode(GL_MODELVIEW); -} - -void GLWidget::resizeGL(int width, int height) -{ - glViewport(0, 0, width * devicePixelRatio(), height * devicePixelRatio()); - aspect = (qreal)width / (qreal)(height ? height : 1); - perspectiveProjection(); -} - -void GLWidget::drawPbuffer() -{ - orthographicProjection(); - - glClearColor(0.0f, 0.0f, 0.0f, 1.0f); - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - - glDisable(GL_TEXTURE_2D); - backdrop->draw(); - glEnable(GL_TEXTURE_2D); - - glBindTexture(GL_TEXTURE_2D, cubeTexture); - glDisable(GL_CULL_FACE); - cube->draw(); - glEnable(GL_CULL_FACE); - - glFlush(); -} - -void GLWidget::initPbuffer() -{ - pbuffer->makeCurrent(); - - cubeTexture = bindTexture(QImage(":res/cubelogo.png")); - - initCommon(); - - // generate a texture that has the same size/format as the pbuffer - dynamicTexture = pbuffer->generateDynamicTexture(); - - // bind the dynamic texture to the pbuffer - this is a no-op under X11 - hasDynamicTextureUpdate = pbuffer->bindToDynamicTexture(dynamicTexture); - makeCurrent(); -} - -void GLWidget::setAnimationPaused(bool enable) -{ - cube->setAnimationPaused(enable); - for (int i = 0; i < 3; ++i) - cubes[i]->setAnimationPaused(enable); -} |