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-rw-r--r--examples/opengl/contextinfo/contextinfo.pro1
-rw-r--r--examples/opengl/hellowindow/hellowindow.cpp34
-rw-r--r--examples/opengl/hellowindow/hellowindow.h2
-rw-r--r--examples/opengl/legacy/framebufferobject2/glwidget.cpp5
-rw-r--r--examples/opengl/legacy/grabber/glwidget.cpp16
-rw-r--r--examples/opengl/legacy/overpainting/bubble.cpp10
-rw-r--r--examples/opengl/legacy/overpainting/glwidget.cpp12
-rw-r--r--examples/opengl/legacy/pbuffers2/glwidget.cpp35
-rw-r--r--examples/opengl/legacy/samplebuffers/glwidget.cpp26
-rw-r--r--examples/opengl/qopenglwidget/bubble.cpp8
-rw-r--r--examples/opengl/qopenglwidget/glwidget.cpp43
-rw-r--r--examples/opengl/qopenglwidget/main.cpp4
-rw-r--r--examples/opengl/qopenglwidget/mainwindow.cpp5
-rw-r--r--examples/opengl/qopenglwindow/background.frag2
-rw-r--r--examples/opengl/threadedqopenglwidget/glwidget.cpp26
15 files changed, 119 insertions, 110 deletions
diff --git a/examples/opengl/contextinfo/contextinfo.pro b/examples/opengl/contextinfo/contextinfo.pro
index 2836e5ea5a..3d948dd282 100644
--- a/examples/opengl/contextinfo/contextinfo.pro
+++ b/examples/opengl/contextinfo/contextinfo.pro
@@ -1,5 +1,6 @@
TEMPLATE = app
QT += widgets
+requires(qtConfig(filedialog))
SOURCES += main.cpp \
widget.cpp \
diff --git a/examples/opengl/hellowindow/hellowindow.cpp b/examples/opengl/hellowindow/hellowindow.cpp
index dc48cc4b76..a978e19b79 100644
--- a/examples/opengl/hellowindow/hellowindow.cpp
+++ b/examples/opengl/hellowindow/hellowindow.cpp
@@ -52,6 +52,7 @@
#include <QOpenGLContext>
#include <QOpenGLFunctions>
+#include <QRandomGenerator>
#include <qmath.h>
Renderer::Renderer(const QSurfaceFormat &format, Renderer *share, QScreen *screen)
@@ -68,9 +69,9 @@ Renderer::Renderer(const QSurfaceFormat &format, Renderer *share, QScreen *scree
m_context->create();
m_backgroundColor = QColor::fromRgbF(0.1f, 0.1f, 0.2f, 1.0f);
- m_backgroundColor.setRed(qrand() % 64);
- m_backgroundColor.setGreen(qrand() % 128);
- m_backgroundColor.setBlue(qrand() % 256);
+ m_backgroundColor.setRed(QRandomGenerator::global()->bounded(64));
+ m_backgroundColor.setGreen(QRandomGenerator::global()->bounded(128));
+ m_backgroundColor.setBlue(QRandomGenerator::global()->bounded(256));
}
HelloWindow::HelloWindow(const QSharedPointer<Renderer> &renderer, QScreen *screen)
@@ -93,6 +94,8 @@ HelloWindow::HelloWindow(const QSharedPointer<Renderer> &renderer, QScreen *scre
void HelloWindow::exposeEvent(QExposeEvent *)
{
m_renderer->setAnimating(this, isExposed());
+ if (isExposed())
+ m_renderer->render();
}
void HelloWindow::mousePressEvent(QMouseEvent *)
@@ -276,21 +279,20 @@ void Renderer::createGeometry()
extrude(x4, y4, y4, x4);
extrude(y4, x4, y3, x3);
- const qreal Pi = 3.14159f;
const int NumSectors = 100;
-
+ const qreal sectorAngle = 2 * qreal(M_PI) / NumSectors;
for (int i = 0; i < NumSectors; ++i) {
- qreal angle1 = (i * 2 * Pi) / NumSectors;
- qreal x5 = 0.30 * qSin(angle1);
- qreal y5 = 0.30 * qCos(angle1);
- qreal x6 = 0.20 * qSin(angle1);
- qreal y6 = 0.20 * qCos(angle1);
-
- qreal angle2 = ((i + 1) * 2 * Pi) / NumSectors;
- qreal x7 = 0.20 * qSin(angle2);
- qreal y7 = 0.20 * qCos(angle2);
- qreal x8 = 0.30 * qSin(angle2);
- qreal y8 = 0.30 * qCos(angle2);
+ qreal angle = i * sectorAngle;
+ qreal x5 = 0.30 * qSin(angle);
+ qreal y5 = 0.30 * qCos(angle);
+ qreal x6 = 0.20 * qSin(angle);
+ qreal y6 = 0.20 * qCos(angle);
+
+ angle += sectorAngle;
+ qreal x7 = 0.20 * qSin(angle);
+ qreal y7 = 0.20 * qCos(angle);
+ qreal x8 = 0.30 * qSin(angle);
+ qreal y8 = 0.30 * qCos(angle);
quad(x5, y5, x6, y6, x7, y7, x8, y8);
diff --git a/examples/opengl/hellowindow/hellowindow.h b/examples/opengl/hellowindow/hellowindow.h
index 1372152e93..e92e45a125 100644
--- a/examples/opengl/hellowindow/hellowindow.h
+++ b/examples/opengl/hellowindow/hellowindow.h
@@ -70,7 +70,7 @@ public:
void setAnimating(HelloWindow *window, bool animating);
-private slots:
+public slots:
void render();
private:
diff --git a/examples/opengl/legacy/framebufferobject2/glwidget.cpp b/examples/opengl/legacy/framebufferobject2/glwidget.cpp
index ac8deddd1f..f14d31aff6 100644
--- a/examples/opengl/legacy/framebufferobject2/glwidget.cpp
+++ b/examples/opengl/legacy/framebufferobject2/glwidget.cpp
@@ -50,8 +50,7 @@
#include "glwidget.h"
#include <QtGui/QImage>
-
-#include <math.h>
+#include <qmath.h>
static GLint cubeArray[][3] = {
{0, 0, 0}, {0, 1, 0}, {1, 1, 0}, {1, 0, 0},
@@ -253,6 +252,6 @@ void GLWidget::drawCube(int i, GLfloat z, GLfloat rotation, GLfloat jmp, GLfloat
xOffs[i] = xOffs[i] > 1.0f ? 1.0f : -1.0f;
}
xOffs[i] += xInc[i];
- yOffs[i] = qAbs(cos((-3.141592f * jmp) * xOffs[i]) * amp) - 1;
+ yOffs[i] = qAbs(cos((-GLfloat(M_PI) * jmp) * xOffs[i]) * amp) - 1;
rot[i] += rotation;
}
diff --git a/examples/opengl/legacy/grabber/glwidget.cpp b/examples/opengl/legacy/grabber/glwidget.cpp
index 958b8055cd..6be4d30597 100644
--- a/examples/opengl/legacy/grabber/glwidget.cpp
+++ b/examples/opengl/legacy/grabber/glwidget.cpp
@@ -52,8 +52,7 @@
#include <QMouseEvent>
#include <QTimer>
-
-#include <math.h>
+#include <qmath.h>
GLWidget::GLWidget(QWidget *parent)
: QGLWidget(parent)
@@ -190,8 +189,6 @@ GLuint GLWidget::makeGear(const GLfloat *reflectance, GLdouble innerRadius,
GLdouble outerRadius, GLdouble thickness,
GLdouble toothSize, GLint toothCount)
{
- const double Pi = 3.14159265358979323846;
-
GLuint list = glGenLists(1);
glNewList(list, GL_COMPILE);
glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, reflectance);
@@ -199,7 +196,8 @@ GLuint GLWidget::makeGear(const GLfloat *reflectance, GLdouble innerRadius,
GLdouble r0 = innerRadius;
GLdouble r1 = outerRadius - toothSize / 2.0;
GLdouble r2 = outerRadius + toothSize / 2.0;
- GLdouble delta = (2.0 * Pi / toothCount) / 4.0;
+ GLdouble toothAngle = 2 * M_PI / toothCount;
+ GLdouble delta = toothAngle / 4.0;
GLdouble z = thickness / 2.0;
glShadeModel(GL_FLAT);
@@ -211,7 +209,7 @@ GLuint GLWidget::makeGear(const GLfloat *reflectance, GLdouble innerRadius,
glBegin(GL_QUAD_STRIP);
for (int j = 0; j <= toothCount; ++j) {
- GLdouble angle = 2.0 * Pi * j / toothCount;
+ GLdouble angle = j * toothAngle;
glVertex3d(r0 * cos(angle), r0 * sin(angle), sign * z);
glVertex3d(r1 * cos(angle), r1 * sin(angle), sign * z);
glVertex3d(r0 * cos(angle), r0 * sin(angle), sign * z);
@@ -221,7 +219,7 @@ GLuint GLWidget::makeGear(const GLfloat *reflectance, GLdouble innerRadius,
glBegin(GL_QUADS);
for (int j = 0; j < toothCount; ++j) {
- GLdouble angle = 2.0 * Pi * j / toothCount;
+ GLdouble angle = j * toothAngle;
glVertex3d(r1 * cos(angle), r1 * sin(angle), sign * z);
glVertex3d(r2 * cos(angle + delta), r2 * sin(angle + delta), sign * z);
glVertex3d(r2 * cos(angle + 2 * delta), r2 * sin(angle + 2 * delta), sign * z);
@@ -233,7 +231,7 @@ GLuint GLWidget::makeGear(const GLfloat *reflectance, GLdouble innerRadius,
glBegin(GL_QUAD_STRIP);
for (int i = 0; i < toothCount; ++i) {
for (int j = 0; j < 2; ++j) {
- GLdouble angle = 2.0 * Pi * (i + j / 2.0) / toothCount;
+ GLdouble angle = (i + j / 2.0) * toothAngle;
GLdouble s1 = r1;
GLdouble s2 = r2;
if (j == 1)
@@ -257,7 +255,7 @@ GLuint GLWidget::makeGear(const GLfloat *reflectance, GLdouble innerRadius,
glBegin(GL_QUAD_STRIP);
for (int i = 0; i <= toothCount; ++i) {
- GLdouble angle = i * 2.0 * Pi / toothCount;
+ GLdouble angle = i * toothAngle;
glNormal3d(-cos(angle), -sin(angle), 0.0);
glVertex3d(r0 * cos(angle), r0 * sin(angle), +z);
glVertex3d(r0 * cos(angle), r0 * sin(angle), -z);
diff --git a/examples/opengl/legacy/overpainting/bubble.cpp b/examples/opengl/legacy/overpainting/bubble.cpp
index afc50117d0..352e359cf9 100644
--- a/examples/opengl/legacy/overpainting/bubble.cpp
+++ b/examples/opengl/legacy/overpainting/bubble.cpp
@@ -50,6 +50,8 @@
#include "bubble.h"
+#include <QRandomGenerator>
+
Bubble::Bubble(const QPointF &position, qreal radius, const QPointF &velocity)
: position(position), vel(velocity), radius(radius)
{
@@ -80,10 +82,10 @@ void Bubble::drawBubble(QPainter *painter)
QColor Bubble::randomColor()
{
- int red = int(205 + 50.0*qrand()/(RAND_MAX+1.0));
- int green = int(205 + 50.0*qrand()/(RAND_MAX+1.0));
- int blue = int(205 + 50.0*qrand()/(RAND_MAX+1.0));
- int alpha = int(91 + 100.0*qrand()/(RAND_MAX+1.0));
+ int red = int(205 + QRandomGenerator::global()->bounded(50));
+ int green = int(205 + QRandomGenerator::global()->bounded(50));
+ int blue = int(205 + QRandomGenerator::global()->bounded(50));
+ int alpha = int(91 + QRandomGenerator::global()->bounded(100));
return QColor(red, green, blue, alpha);
}
diff --git a/examples/opengl/legacy/overpainting/glwidget.cpp b/examples/opengl/legacy/overpainting/glwidget.cpp
index 7e9f4a5beb..1ec7bd731c 100644
--- a/examples/opengl/legacy/overpainting/glwidget.cpp
+++ b/examples/opengl/legacy/overpainting/glwidget.cpp
@@ -53,6 +53,7 @@
#include "glwidget.h"
#include <QMouseEvent>
+#include <QRandomGenerator>
#include <QTime>
#include <math.h>
@@ -67,7 +68,6 @@ GLWidget::GLWidget(QWidget *parent)
: QGLWidget(QGLFormat(QGL::SampleBuffers), parent)
{
QTime midnight(0, 0, 0);
- qsrand(midnight.secsTo(QTime::currentTime()));
logo = 0;
xRot = 0;
@@ -234,11 +234,11 @@ QSize GLWidget::sizeHint() const
void GLWidget::createBubbles(int number)
{
for (int i = 0; i < number; ++i) {
- QPointF position(width()*(0.1 + (0.8*qrand()/(RAND_MAX+1.0))),
- height()*(0.1 + (0.8*qrand()/(RAND_MAX+1.0))));
- qreal radius = qMin(width(), height())*(0.0125 + 0.0875*qrand()/(RAND_MAX+1.0));
- QPointF velocity(width()*0.0125*(-0.5 + qrand()/(RAND_MAX+1.0)),
- height()*0.0125*(-0.5 + qrand()/(RAND_MAX+1.0)));
+ QPointF position(width()*(0.1 + QRandomGenerator::global()->bounded(0.8)),
+ height()*(0.1 + QRandomGenerator::global()->bounded(0.8)));
+ qreal radius = qMin(width(), height())*(0.0125 + QRandomGenerator::global()->bounded(0.0875));
+ QPointF velocity(width()*0.0125*(-0.5 + QRandomGenerator::global()->bounded(1.0)),
+ height()*0.0125*(-0.5 + QRandomGenerator::global()->bounded(1.0)));
bubbles.append(new Bubble(position, radius, velocity));
}
diff --git a/examples/opengl/legacy/pbuffers2/glwidget.cpp b/examples/opengl/legacy/pbuffers2/glwidget.cpp
index c99f9e40fa..c710d03cab 100644
--- a/examples/opengl/legacy/pbuffers2/glwidget.cpp
+++ b/examples/opengl/legacy/pbuffers2/glwidget.cpp
@@ -49,10 +49,9 @@
****************************************************************************/
#include <QtGui/QImage>
+#include <qmath.h>
#include "glwidget.h"
-#include <math.h>
-
#ifndef GL_MULTISAMPLE
#define GL_MULTISAMPLE 0x809D
#endif
@@ -291,8 +290,6 @@ void GLWidget::restoreGLState()
glPopAttrib();
}
-#define PI 3.14159
-
void GLWidget::timerEvent(QTimerEvent *)
{
if (QApplication::mouseButtons() != 0)
@@ -305,31 +302,27 @@ void GLWidget::timerEvent(QTimerEvent *)
else if (!scale_in && scale < .5f)
scale_in = true;
- scale = scale_in ? scale + scale*0.01f : scale-scale*0.01f;
+ scale *= scale_in ? 1.01f : 0.99f;
rot_z += 0.3f;
rot_x += 0.1f;
- int dx, dy; // disturbance point
- float s, v, W, t;
- int i, j;
- static float wt[128][128];
+ static float wt = 0.0;
+ wt += 0.1f;
+
const int width = logo.width();
+ const int dx = width >> 1, dy = dx; // disturbance point
+ const float v = -4; // wave speed
+ const float W = .3f;
const int AMP = 5;
- dx = dy = width >> 1;
-
- W = .3f;
- v = -4; // wave speed
-
- for (i = 0; i < width; ++i) {
- for ( j = 0; j < width; ++j) {
- s = sqrt((double) ((j - dx) * (j - dx) + (i - dy) * (i - dy)));
- wt[i][j] += 0.1f;
- t = s / v;
+ for (int i = 0; i < width; ++i) {
+ for (int j = 0; j < width; ++j) {
+ const float s = hypot(j - dx, i - dy);
+ const double raw = AMP * sin(2 * M_PI * W * (wt + s / v));
if (s != 0)
- wave[i*width + j] = AMP * sin(2 * PI * W * (wt[i][j] + t)) / (0.2*(s + 2));
+ wave[i * width + j] = raw / (0.2 * (s + 2));
else
- wave[i*width + j] = AMP * sin(2 * PI * W * (wt[i][j] + t));
+ wave[i * width + j] = raw;
}
}
}
diff --git a/examples/opengl/legacy/samplebuffers/glwidget.cpp b/examples/opengl/legacy/samplebuffers/glwidget.cpp
index 14c59c9143..da30de4d55 100644
--- a/examples/opengl/legacy/samplebuffers/glwidget.cpp
+++ b/examples/opengl/legacy/samplebuffers/glwidget.cpp
@@ -49,7 +49,7 @@
****************************************************************************/
#include "glwidget.h"
-#include <math.h>
+#include <qmath.h>
#ifndef GL_MULTISAMPLE
#define GL_MULTISAMPLE 0x809D
@@ -116,7 +116,6 @@ void GLWidget::timerEvent(QTimerEvent *)
void GLWidget::makeObject()
{
QColor qtGreen(QColor::fromCmykF(0.40, 0.0, 1.0, 0.0));
- const double Pi = 3.14159265358979323846;
const int NumSectors = 15;
GLdouble x1 = +0.06;
GLdouble y1 = -0.14;
@@ -130,18 +129,19 @@ void GLWidget::makeObject()
list = glGenLists(1);
glNewList(list, GL_COMPILE);
{
+ const double sectorAngle = 2 * M_PI / NumSectors;
for (int i = 0; i < NumSectors; ++i) {
- double angle1 = (i * 2 * Pi) / NumSectors;
- GLdouble x5 = 0.30 * sin(angle1);
- GLdouble y5 = 0.30 * cos(angle1);
- GLdouble x6 = 0.20 * sin(angle1);
- GLdouble y6 = 0.20 * cos(angle1);
-
- double angle2 = ((i + 1) * 2 * Pi) / NumSectors;
- GLdouble x7 = 0.20 * sin(angle2);
- GLdouble y7 = 0.20 * cos(angle2);
- GLdouble x8 = 0.30 * sin(angle2);
- GLdouble y8 = 0.30 * cos(angle2);
+ double angle = i * sectorAngle;
+ GLdouble x5 = 0.30 * sin(angle);
+ GLdouble y5 = 0.30 * cos(angle);
+ GLdouble x6 = 0.20 * sin(angle);
+ GLdouble y6 = 0.20 * cos(angle);
+
+ angle += sectorAngle;
+ GLdouble x7 = 0.20 * sin(angle);
+ GLdouble y7 = 0.20 * cos(angle);
+ GLdouble x8 = 0.30 * sin(angle);
+ GLdouble y8 = 0.30 * cos(angle);
qglColor(qtGreen);
quad(GL_QUADS, x5, y5, x6, y6, x7, y7, x8, y8);
diff --git a/examples/opengl/qopenglwidget/bubble.cpp b/examples/opengl/qopenglwidget/bubble.cpp
index adf5742f6a..dbaf460f6f 100644
--- a/examples/opengl/qopenglwidget/bubble.cpp
+++ b/examples/opengl/qopenglwidget/bubble.cpp
@@ -109,10 +109,10 @@ void Bubble::drawBubble(QPainter *painter)
QColor Bubble::randomColor()
{
- int red = int(185 + 70.0*qrand()/(RAND_MAX+1.0));
- int green = int(185 + 70.0*qrand()/(RAND_MAX+1.0));
- int blue = int(205 + 50.0*qrand()/(RAND_MAX+1.0));
- int alpha = int(91 + 100.0*qrand()/(RAND_MAX+1.0));
+ int red = int(185 + QRandomGenerator::global()->bounded(70));
+ int green = int(185 + QRandomGenerator::global()->bounded(70));
+ int blue = int(205 + QRandomGenerator::global()->bounded(50));
+ int alpha = int(91 + QRandomGenerator::global()->bounded(100));
return QColor(red, green, blue, alpha);
}
diff --git a/examples/opengl/qopenglwidget/glwidget.cpp b/examples/opengl/qopenglwidget/glwidget.cpp
index 21d922d713..3fe919f94b 100644
--- a/examples/opengl/qopenglwidget/glwidget.cpp
+++ b/examples/opengl/qopenglwidget/glwidget.cpp
@@ -53,14 +53,19 @@
#include <QPaintEngine>
#include <QOpenGLShaderProgram>
#include <QOpenGLTexture>
+#include <QRandomGenerator>
#include <QCoreApplication>
-#include <math.h>
+#include <qmath.h>
#include "mainwindow.h"
#include "bubble.h"
const int bubbleNum = 8;
+#ifndef GL_SRGB8_ALPHA8
+#define GL_SRGB8_ALPHA8 0x8C43
+#endif
+
GLWidget::GLWidget(MainWindow *mw, bool button, const QColor &background)
: m_mainWindow(mw),
m_showBubbles(true),
@@ -75,6 +80,8 @@ GLWidget::GLWidget(MainWindow *mw, bool button, const QColor &background)
m_background(background)
{
setMinimumSize(300, 250);
+ if (QCoreApplication::arguments().contains(QStringLiteral("--srgb")))
+ setTextureFormat(GL_SRGB8_ALPHA8);
}
GLWidget::~GLWidget()
@@ -414,11 +421,11 @@ void GLWidget::paintGL()
void GLWidget::createBubbles(int number)
{
for (int i = 0; i < number; ++i) {
- QPointF position(width()*(0.1 + (0.8*qrand()/(RAND_MAX+1.0))),
- height()*(0.1 + (0.8*qrand()/(RAND_MAX+1.0))));
- qreal radius = qMin(width(), height())*(0.0175 + 0.0875*qrand()/(RAND_MAX+1.0));
- QPointF velocity(width()*0.0175*(-0.5 + qrand()/(RAND_MAX+1.0)),
- height()*0.0175*(-0.5 + qrand()/(RAND_MAX+1.0)));
+ QPointF position(width()*(0.1 + QRandomGenerator::global()->bounded(0.8)),
+ height()*(0.1 + QRandomGenerator::global()->bounded(0.8)));
+ qreal radius = qMin(width(), height())*(0.0175 + QRandomGenerator::global()->bounded(0.0875));
+ QPointF velocity(width()*0.0175*(-0.5 + QRandomGenerator::global()->bounded(1.0)),
+ height()*0.0175*(-0.5 + QRandomGenerator::global()->bounded(1.0)));
m_bubbles.append(new Bubble(position, radius, velocity));
}
@@ -449,21 +456,21 @@ void GLWidget::createGeometry()
extrude(x4, y4, y4, x4);
extrude(y4, x4, y3, x3);
- const qreal Pi = 3.14159f;
const int NumSectors = 100;
+ const qreal sectorAngle = 2 * qreal(M_PI) / NumSectors;
for (int i = 0; i < NumSectors; ++i) {
- qreal angle1 = (i * 2 * Pi) / NumSectors;
- qreal x5 = 0.30 * sin(angle1);
- qreal y5 = 0.30 * cos(angle1);
- qreal x6 = 0.20 * sin(angle1);
- qreal y6 = 0.20 * cos(angle1);
-
- qreal angle2 = ((i + 1) * 2 * Pi) / NumSectors;
- qreal x7 = 0.20 * sin(angle2);
- qreal y7 = 0.20 * cos(angle2);
- qreal x8 = 0.30 * sin(angle2);
- qreal y8 = 0.30 * cos(angle2);
+ qreal angle = i * sectorAngle;
+ qreal x5 = 0.30 * sin(angle);
+ qreal y5 = 0.30 * cos(angle);
+ qreal x6 = 0.20 * sin(angle);
+ qreal y6 = 0.20 * cos(angle);
+
+ angle += sectorAngle;
+ qreal x7 = 0.20 * sin(angle);
+ qreal y7 = 0.20 * cos(angle);
+ qreal x8 = 0.30 * sin(angle);
+ qreal y8 = 0.30 * cos(angle);
quad(x5, y5, x6, y6, x7, y7, x8, y8);
diff --git a/examples/opengl/qopenglwidget/main.cpp b/examples/opengl/qopenglwidget/main.cpp
index ea90dca62f..42fc772445 100644
--- a/examples/opengl/qopenglwidget/main.cpp
+++ b/examples/opengl/qopenglwidget/main.cpp
@@ -69,11 +69,15 @@ int main( int argc, char ** argv )
parser.addVersionOption();
QCommandLineOption multipleSampleOption("multisample", "Multisampling");
parser.addOption(multipleSampleOption);
+ QCommandLineOption srgbOption("srgb", "Use sRGB Color Space");
+ parser.addOption(srgbOption);
parser.process(a);
QSurfaceFormat format;
format.setDepthBufferSize(24);
format.setStencilBufferSize(8);
+ if (parser.isSet(srgbOption))
+ format.setColorSpace(QSurfaceFormat::sRGBColorSpace);
if (parser.isSet(multipleSampleOption))
format.setSamples(4);
QSurfaceFormat::setDefaultFormat(format);
diff --git a/examples/opengl/qopenglwidget/mainwindow.cpp b/examples/opengl/qopenglwidget/mainwindow.cpp
index 1bb2aa2bf0..4bd123628f 100644
--- a/examples/opengl/qopenglwidget/mainwindow.cpp
+++ b/examples/opengl/qopenglwidget/mainwindow.cpp
@@ -56,6 +56,7 @@
#include <QSlider>
#include <QLabel>
#include <QCheckBox>
+#include <QRandomGenerator>
#include <QSpinBox>
#include <QScrollArea>
@@ -155,7 +156,9 @@ void MainWindow::addNew()
{
if (m_nextY == 4)
return;
- GLWidget *w = new GLWidget(this, false, qRgb(qrand() % 256, qrand() % 256, qrand() % 256));
+ GLWidget *w = new GLWidget(this, false, qRgb(QRandomGenerator::global()->bounded(256),
+ QRandomGenerator::global()->bounded(256),
+ QRandomGenerator::global()->bounded(256)));
m_glWidgets << w;
connect(m_timer, &QTimer::timeout, w, QOverload<>::of(&QWidget::update));
m_layout->addWidget(w, m_nextY, m_nextX, 1, 1);
diff --git a/examples/opengl/qopenglwindow/background.frag b/examples/opengl/qopenglwindow/background.frag
index eecb6d3120..4af85aae8e 100644
--- a/examples/opengl/qopenglwindow/background.frag
+++ b/examples/opengl/qopenglwindow/background.frag
@@ -1,4 +1,4 @@
-#define M_PI 3.1415926535897932384626433832795
+#define M_PI 3.14159265358979323846
#define SPEED 10000.0
uniform int currentTime;
diff --git a/examples/opengl/threadedqopenglwidget/glwidget.cpp b/examples/opengl/threadedqopenglwidget/glwidget.cpp
index f9738db2e5..cc528a734a 100644
--- a/examples/opengl/threadedqopenglwidget/glwidget.cpp
+++ b/examples/opengl/threadedqopenglwidget/glwidget.cpp
@@ -49,7 +49,7 @@
****************************************************************************/
#include "glwidget.h"
-#include <math.h>
+#include <qmath.h>
#include <QGuiApplication>
GLWidget::GLWidget(QWidget *parent)
@@ -282,21 +282,21 @@ void Renderer::createGeometry()
extrude(x4, y4, y4, x4);
extrude(y4, x4, y3, x3);
- const qreal Pi = 3.14159f;
const int NumSectors = 100;
+ const qreal sectorAngle = 2 * qreal(M_PI) / NumSectors;
for (int i = 0; i < NumSectors; ++i) {
- qreal angle1 = (i * 2 * Pi) / NumSectors;
- qreal x5 = 0.30 * sin(angle1);
- qreal y5 = 0.30 * cos(angle1);
- qreal x6 = 0.20 * sin(angle1);
- qreal y6 = 0.20 * cos(angle1);
-
- qreal angle2 = ((i + 1) * 2 * Pi) / NumSectors;
- qreal x7 = 0.20 * sin(angle2);
- qreal y7 = 0.20 * cos(angle2);
- qreal x8 = 0.30 * sin(angle2);
- qreal y8 = 0.30 * cos(angle2);
+ qreal angle = i * sectorAngle;
+ qreal x5 = 0.30 * sin(angle);
+ qreal y5 = 0.30 * cos(angle);
+ qreal x6 = 0.20 * sin(angle);
+ qreal y6 = 0.20 * cos(angle);
+
+ angle += sectorAngle;
+ qreal x7 = 0.20 * sin(angle);
+ qreal y7 = 0.20 * cos(angle);
+ qreal x8 = 0.30 * sin(angle);
+ qreal y8 = 0.30 * cos(angle);
quad(x5, y5, x6, y6, x7, y7, x8, y8);
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-07 00:12:56 +0000