diff options
author | Paul Olav Tvete <paul.tvete@theqtcompany.com> | 2015-07-22 13:38:26 +0200 |
---|---|---|
committer | Paul Olav Tvete <paul.tvete@theqtcompany.com> | 2015-07-24 10:18:16 +0000 |
commit | 80dbdf0de3bfe5f0710a1c37932ef81cbdb5fbff (patch) | |
tree | 10a1afa3047f23a4efd3a98d0f6da4b77725be45 /examples/opengl | |
parent | 906ad92fbfb20e1665d55bb6c447bbf67c66ee27 (diff) |
Make the gles3 example more impressive
Add some extra rotations and offsets, to show off the power of
what you can do with a single draw call. Also use QGLWindow instead
of QGLWidget. This improves performance from 23 FPS to 30 FPS on a
4k monitor with integrated Intel graphics.
Change-Id: Iedac1c14cc6057959aa15faaacdf29da91f36ab1
Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>
Diffstat (limited to 'examples/opengl')
-rw-r--r-- | examples/opengl/hellogles3/glwindow.cpp (renamed from examples/opengl/hellogles3/glwidget.cpp) | 79 | ||||
-rw-r--r-- | examples/opengl/hellogles3/glwindow.h (renamed from examples/opengl/hellogles3/glwidget.h) | 19 | ||||
-rw-r--r-- | examples/opengl/hellogles3/hellogles3.pro | 8 | ||||
-rw-r--r-- | examples/opengl/hellogles3/main.cpp | 10 | ||||
-rw-r--r-- | examples/opengl/hellogles3/mainwindow.cpp | 58 | ||||
-rw-r--r-- | examples/opengl/hellogles3/mainwindow.h | 54 |
6 files changed, 84 insertions, 144 deletions
diff --git a/examples/opengl/hellogles3/glwidget.cpp b/examples/opengl/hellogles3/glwindow.cpp index 74056d63c2..ad654b854c 100644 --- a/examples/opengl/hellogles3/glwidget.cpp +++ b/examples/opengl/hellogles3/glwindow.cpp @@ -38,7 +38,7 @@ ** ****************************************************************************/ -#include "glwidget.h" +#include "glwindow.h" #include <QImage> #include <QOpenGLTexture> #include <QOpenGLShaderProgram> @@ -49,14 +49,17 @@ #include <QPropertyAnimation> #include <QPauseAnimation> #include <QSequentialAnimationGroup> +#include <QTimer> -GLWidget::GLWidget() +GLWindow::GLWindow() : m_texture(0), m_program(0), m_vbo(0), m_vao(0), m_target(0, 0, -1), - m_uniformsDirty(true) + m_uniformsDirty(true), + m_r(0), + m_r2(0) { m_world.setToIdentity(); m_world.translate(0, 0, -1); @@ -65,25 +68,34 @@ GLWidget::GLWidget() QSequentialAnimationGroup *animGroup = new QSequentialAnimationGroup(this); animGroup->setLoopCount(-1); QPropertyAnimation *zAnim0 = new QPropertyAnimation(this, QByteArrayLiteral("z")); - zAnim0->setStartValue(0.0f); - zAnim0->setEndValue(1.0f); + zAnim0->setStartValue(1.5f); + zAnim0->setEndValue(10.0f); zAnim0->setDuration(2000); animGroup->addAnimation(zAnim0); QPropertyAnimation *zAnim1 = new QPropertyAnimation(this, QByteArrayLiteral("z")); - zAnim1->setStartValue(0.0f); - zAnim1->setEndValue(70.0f); + zAnim1->setStartValue(10.0f); + zAnim1->setEndValue(50.0f); zAnim1->setDuration(4000); zAnim1->setEasingCurve(QEasingCurve::OutElastic); animGroup->addAnimation(zAnim1); QPropertyAnimation *zAnim2 = new QPropertyAnimation(this, QByteArrayLiteral("z")); - zAnim2->setStartValue(70.0f); - zAnim2->setEndValue(0.0f); + zAnim2->setStartValue(50.0f); + zAnim2->setEndValue(1.5f); zAnim2->setDuration(2000); animGroup->addAnimation(zAnim2); animGroup->start(); + + QPropertyAnimation* rAnim = new QPropertyAnimation(this, QByteArrayLiteral("r")); + rAnim->setStartValue(0.0f); + rAnim->setEndValue(360.0f); + rAnim->setDuration(2000); + rAnim->setLoopCount(-1); + rAnim->start(); + + QTimer::singleShot(4000, this, SLOT(startSecondStage())); } -GLWidget::~GLWidget() +GLWindow::~GLWindow() { makeCurrent(); delete m_texture; @@ -92,13 +104,37 @@ GLWidget::~GLWidget() delete m_vao; } -void GLWidget::setZ(float v) +void GLWindow::startSecondStage() +{ + QPropertyAnimation* r2Anim = new QPropertyAnimation(this, QByteArrayLiteral("r2")); + r2Anim->setStartValue(0.0f); + r2Anim->setEndValue(360.0f); + r2Anim->setDuration(20000); + r2Anim->setLoopCount(-1); + r2Anim->start(); +} + +void GLWindow::setZ(float v) { m_eye.setZ(v); m_uniformsDirty = true; update(); } +void GLWindow::setR(float v) +{ + m_r = v; + m_uniformsDirty = true; + update(); +} + +void GLWindow::setR2(float v) +{ + m_r2 = v; + m_uniformsDirty = true; + update(); +} + static const char *vertexShaderSource = "layout(location = 0) in vec4 vertex;\n" "layout(location = 1) in vec3 normal;\n" @@ -108,11 +144,13 @@ static const char *vertexShaderSource = "uniform mat4 projMatrix;\n" "uniform mat4 camMatrix;\n" "uniform mat4 worldMatrix;\n" + "uniform mat4 myMatrix;\n" "uniform sampler2D sampler;\n" "void main() {\n" " ivec2 pos = ivec2(gl_InstanceID % 32, gl_InstanceID / 32);\n" - " vec2 t = vec2(-16 + pos.x, -18 + pos.y);\n" - " mat4 wm = mat4(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, t.x, t.y, 0, 1) * worldMatrix;\n" + " vec2 t = vec2(float(-16 + pos.x) * 0.8, float(-18 + pos.y) * 0.6);\n" + " float val = 2.0 * length(texelFetch(sampler, pos, 0).rgb);\n" + " mat4 wm = myMatrix * mat4(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, t.x, t.y, val, 1) * worldMatrix;\n" " color = texelFetch(sampler, pos, 0).rgb * vec3(0.4, 1.0, 0.0);\n" " vert = vec3(wm * vertex);\n" " vertNormal = mat3(transpose(inverse(wm))) * normal;\n" @@ -145,7 +183,7 @@ QByteArray versionedShaderCode(const char *src) return versionedSrc; } -void GLWidget::initializeGL() +void GLWindow::initializeGL() { QOpenGLFunctions *f = QOpenGLContext::currentContext()->functions(); @@ -171,6 +209,7 @@ void GLWidget::initializeGL() m_projMatrixLoc = m_program->uniformLocation("projMatrix"); m_camMatrixLoc = m_program->uniformLocation("camMatrix"); m_worldMatrixLoc = m_program->uniformLocation("worldMatrix"); + m_myMatrixLoc = m_program->uniformLocation("myMatrix"); m_lightPosLoc = m_program->uniformLocation("lightPos"); // Create a VAO. Not strictly required for ES 3, but it is for plain OpenGL. @@ -201,14 +240,14 @@ void GLWidget::initializeGL() f->glEnable(GL_CULL_FACE); } -void GLWidget::resizeGL(int w, int h) +void GLWindow::resizeGL(int w, int h) { m_proj.setToIdentity(); m_proj.perspective(45.0f, GLfloat(w) / h, 0.01f, 100.0f); m_uniformsDirty = true; } -void GLWidget::paintGL() +void GLWindow::paintGL() { // Now use QOpenGLExtraFunctions instead of QOpenGLFunctions as we want to // do more than what GL(ES) 2.0 offers. @@ -226,7 +265,13 @@ void GLWidget::paintGL() camera.lookAt(m_eye, m_eye + m_target, QVector3D(0, 1, 0)); m_program->setUniformValue(m_projMatrixLoc, m_proj); m_program->setUniformValue(m_camMatrixLoc, camera); - m_program->setUniformValue(m_worldMatrixLoc, m_world); + QMatrix4x4 wm = m_world; + wm.rotate(m_r, 1, 1, 0); + m_program->setUniformValue(m_worldMatrixLoc, wm); + QMatrix4x4 mm; + mm.setToIdentity(); + mm.rotate(-m_r2, 1, 0, 0); + m_program->setUniformValue(m_myMatrixLoc, mm); m_program->setUniformValue(m_lightPosLoc, QVector3D(0, 0, 70)); } diff --git a/examples/opengl/hellogles3/glwidget.h b/examples/opengl/hellogles3/glwindow.h index 85830c32f5..fe5d5383e9 100644 --- a/examples/opengl/hellogles3/glwidget.h +++ b/examples/opengl/hellogles3/glwindow.h @@ -41,7 +41,7 @@ #ifndef GLWIDGET_H #define GLWIDGET_H -#include <QOpenGLWidget> +#include <QOpenGLWindow> #include <QMatrix4x4> #include <QVector3D> #include "../hellogl2/logo.h" @@ -51,14 +51,16 @@ class QOpenGLShaderProgram; class QOpenGLBuffer; class QOpenGLVertexArrayObject; -class GLWidget : public QOpenGLWidget +class GLWindow : public QOpenGLWindow { Q_OBJECT Q_PROPERTY(float z READ z WRITE setZ) + Q_PROPERTY(float r READ r WRITE setR) + Q_PROPERTY(float r2 READ r2 WRITE setR2) public: - GLWidget(); - ~GLWidget(); + GLWindow(); + ~GLWindow(); void initializeGL(); void resizeGL(int w, int h); @@ -67,6 +69,12 @@ public: float z() const { return m_eye.z(); } void setZ(float v); + float r() const { return m_r; } + void setR(float v); + float r2() const { return m_r2; } + void setR2(float v); +private slots: + void startSecondStage(); private: QOpenGLTexture *m_texture; QOpenGLShaderProgram *m_program; @@ -76,12 +84,15 @@ private: int m_projMatrixLoc; int m_camMatrixLoc; int m_worldMatrixLoc; + int m_myMatrixLoc; int m_lightPosLoc; QMatrix4x4 m_proj; QMatrix4x4 m_world; QVector3D m_eye; QVector3D m_target; bool m_uniformsDirty; + float m_r; + float m_r2; }; #endif diff --git a/examples/opengl/hellogles3/hellogles3.pro b/examples/opengl/hellogles3/hellogles3.pro index 299d439fd2..e0d4c25ca6 100644 --- a/examples/opengl/hellogles3/hellogles3.pro +++ b/examples/opengl/hellogles3/hellogles3.pro @@ -1,14 +1,10 @@ -HEADERS = $$PWD/glwidget.h \ - $$PWD/mainwindow.h \ +HEADERS = $$PWD/glwindow.h \ $$PWD/../hellogl2/logo.h -SOURCES = $$PWD/glwidget.cpp \ +SOURCES = $$PWD/glwindow.cpp \ $$PWD/main.cpp \ - $$PWD/mainwindow.cpp \ $$PWD/../hellogl2/logo.cpp -QT += widgets - RESOURCES += hellogles3.qrc target.path = $$[QT_INSTALL_EXAMPLES]/opengl/hellogles3 diff --git a/examples/opengl/hellogles3/main.cpp b/examples/opengl/hellogles3/main.cpp index 3125623395..f0de28bdc4 100644 --- a/examples/opengl/hellogles3/main.cpp +++ b/examples/opengl/hellogles3/main.cpp @@ -38,11 +38,11 @@ ** ****************************************************************************/ -#include <QApplication> +#include <QGuiApplication> #include <QSurfaceFormat> #include <QOpenGLContext> -#include "mainwindow.h" +#include "glwindow.h" // This example demonstrates easy, cross-platform usage of OpenGL ES 3.0 functions via // QOpenGLExtraFunctions in an application that works identically on desktop platforms @@ -69,10 +69,10 @@ int main(int argc, char *argv[]) QSurfaceFormat::setDefaultFormat(fmt); - QApplication app(argc, argv); + QGuiApplication app(argc, argv); - MainWindow mainWindow; - mainWindow.showMaximized(); + GLWindow glWindow; + glWindow.showMaximized(); return app.exec(); } diff --git a/examples/opengl/hellogles3/mainwindow.cpp b/examples/opengl/hellogles3/mainwindow.cpp deleted file mode 100644 index 1ea72eb475..0000000000 --- a/examples/opengl/hellogles3/mainwindow.cpp +++ /dev/null @@ -1,58 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2015 The Qt Company Ltd. -** Contact: http://www.qt.io/licensing/ -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** 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." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "mainwindow.h" -#include "glwidget.h" -#include <QApplication> -#include <QMenuBar> -#include <QMenu> - -MainWindow::MainWindow() -{ - QMenuBar *menuBar = new QMenuBar; - QMenu *menuWindow = menuBar->addMenu(tr("&File")); - QAction *exitAction = new QAction(menuWindow); - exitAction->setText(tr("E&xit")); - menuWindow->addAction(exitAction); - connect(exitAction, SIGNAL(triggered()), qApp, SLOT(quit())); - setMenuBar(menuBar); - - setCentralWidget(new GLWidget); -} diff --git a/examples/opengl/hellogles3/mainwindow.h b/examples/opengl/hellogles3/mainwindow.h deleted file mode 100644 index 33c2c55669..0000000000 --- a/examples/opengl/hellogles3/mainwindow.h +++ /dev/null @@ -1,54 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2015 The Qt Company Ltd. -** Contact: http://www.qt.io/licensing/ -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** 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." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#ifndef MAINWINDOW_H -#define MAINWINDOW_H - -#include <QMainWindow> - -class MainWindow : public QMainWindow -{ - Q_OBJECT - -public: - MainWindow(); -}; - -#endif |