Est-il possible d'avoir openGL dans 2 fenêtres? comme dans 2 fenêtres différentes (disons le premier est 640x480 et l'autre est 1024x768) rendant différentes choses (disons une fenêtre est un éditeur et l'autre est l'affichage de la fenêtre principale/normale)Plusieurs fenêtres dans OpenGL?
Si vous utilisez GLUT vous pouvez utiliser les appels glutSetWindow()/glutGetWindow() pour sélectionner la fenêtre correcte (après les avoir créés avec glutCreateSubWindow()). Cependant, parfois, GLUT n'est peut-être pas le bon outil pour le travail.
Si vous travaillez sous Windows, vous voudrez regarder dans wglMakeCurrent() et wglCreateContext(). Sur OS X, il y a aglSetCurrentContext() et cetera, et X11 requiert glXMakeCurrent().
Ces fonctions activent le contexte OpenGL actuel que vous pouvez rendre. Chaque bibliothèque spécifique à une plate-forme a ses propres façons de créer une fenêtre et de lier un contexte OpenGL à celle-ci.
Sous Windows, après avoir acquis votre HWND et HDC pour une fenêtre (après un appel CreateWindow et GetDC). Vous faites généralement quelque chose comme ceci pour mettre en place OpenGL:
GLuint l_PixelFormat = 0;
// some pixel format descriptor that I generally use:
static PIXELFORMATDESCRIPTOR l_Pfd = { sizeof(PIXELFORMATDESCRIPTOR), 1,
PFD_DRAW_TO_WINDOW + PFD_SUPPORT_OPENGL + PFD_DOUBLEBUFFER,
PFD_TYPE_RGBA, m_BitsPerPixel, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 16, 0, 0, PFD_MAIN_PLANE, 0, 0, 0, 0};
if(!(l_PixelFormat = ChoosePixelFormat(m_hDC, &l_Pfd))){
throw std::runtime_error("No matching pixel format descriptor");
}
if(!SetPixelFormat(m_hDC, l_PixelFormat, &l_Pfd)){
throw std::runtime_error("Can't set the pixel format");
}
if(!(m_hRC = wglCreateContext(m_hDC))){
throw std::runtime_error("Can't create rendering context");
}
wglMakeCurrent(m_hDC, m_hRC);
Vous utilisez ce code pour créer des fenêtres multiples et lier OpenGL, puis chaque fois que vous voulez dessiner une fenêtre spécifique que vous devez appeler wglMakeCurrent avant vous faites n'importe quoi et vous passez dans les paramètres correspondant à cette fenêtre.
En note, OpenGL vous permet de partager certaines données entre différents contextes, mais selon les spécifications, les données que vous pouvez partager sont assez limitées. Cependant, la plupart des systèmes d'exploitation vous permettent de partager plus de données que celles spécifiées dans la spécification.
std :: code_erreur err {static_cast
Oui, c'est possible. Pour chaque fenêtre, vous devrez créer un contexte de périphérique et un contexte de rendu uniques.
HDC hDC = GetDC(hWnd); /* get the device context for a particular window */
/* snip */
HGLRC hRC;
hRC = wglCreateContext(hDC); /* get a render context for the same window */
/* repeat with hDC2 and hRC2 with another window handle*/
Avant de GL appelle à la fenêtre, vous devez appeler wglMakeCurrent comme ceci:
wglMakeCurrent(hDC, hRC);
/* GL calls for first window */
wglMakeCurrent(NULL, NULL);
wglMakeCurrent(hDC2, hRC2);
/* GL calls for second window */
wglMakeCurrent(NULL, NULL);
+1 Bonne réponse et au point. – kol
Sur Windows, vous pouvez partager des objets OpenGL tels que des textures et des shaders avec wglShareLists(). Il partage généralement tout ce qui vous intéresse, malgré ce que dit MSDN.
J'ai déjà effectué plusieurs fenêtres OpenGL dans une application MFC. Voici une classe que vous pourriez trouver utile: comme il ne peut y avoir qu'un seul contexte de rendu courant dans le thread de l'interface utilisateur à la fois, j'ai écrit un wrapper de classe pour faciliter la gestion.
SaveRestoreRC.h
// this class helps to manage multiple RCs using an RAII design pattern
class CSaveRestoreRC
{
public:
HDC oldDC;
HGLRC oldRC;
CSaveRestoreRC(HDC hDC, HGLRC hRC);
~CSaveRestoreRC(void);
};
SaveRestoreRC.cpp:
CSaveRestoreRC::CSaveRestoreRC(HDC hDC, HGLRC hRC)
{
ASSERT(hDC);
ASSERT(hRC);
oldDC = wglGetCurrentDC();
oldRC = wglGetCurrentContext();
BOOL result = wglMakeCurrent(hDC, hRC);
ASSERT(result);
}
CSaveRestoreRC::~CSaveRestoreRC(void)
{
if(!oldRC)
return;
ASSERT(oldDC);
BOOL result = wglMakeCurrent(oldDC, oldRC);
ASSERT(result);
}
maintenant dériver une classe de CWnd et ajouter ces variables membres:
class COpenGLControl : public CWnd
{
// used to interface OpenGL with Windows
HDC hdc;
HGLRC hrc;
// ...
int COpenGLControl::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CWnd::OnCreate(lpCreateStruct) == -1)
return -1;
// Get device context only once.
hdc = GetDC()->m_hDC;
// ... ChoosePixelFormat, SetPixelFormat, etc. here.
// Create the OpenGL Rendering Context.
hrc = wglCreateContext(hdc);
ASSERT(hrc);
Ensuite, dans toutes les fonctions de membre où vous appelez TOUTES les commandes OpenGL, utilisez CSaveRestoreRC pour que votre contexte de rendu actuel ne soit pas foutu.
Si vous aimez utiliser seulement la librairie glut, veuillez regarder a code by Eric Stringer.
// Glutdualwindow.c
// By Eric Stringer 2002
// Simple examples of OpenGL and Glut usage.
// Keyboard input
// 'v' = view ortho/perspective
// 'l' = lighting on/off
#include <windows.h> // This header file will be needed for some windows compilers
//#include <GL/gl.h> // gl.h and glu.h also maybe needed for some compilers
//#include <GL/glu.h>
#include <GL/glut.h> // glut (gl utility toolkit) basic windows functions, keyboard, mouse.
#include <stdio.h> // standard (I/O library)
#include <stdlib.h> // standard library (set of standard C functions
#include <math.h> // Math library (Higher math functions)
// lighting
GLfloat LightAmbient[]= { 0.2f, 0.2f, 0.2f, 1.0f };
GLfloat LightDiffuse[]= { 0.5f, 0.5f, 0.5f, 1.0f };
GLfloat LightPosition[]= { 5.0f, 5.0f, -10.0f, 1.0f };
GLfloat mat_specular[] = { 0.2, 0.2, 0.2, 1.0 };
int window_1, window_2;
static int view_state = 0, light_state = 0;
int spin;
int shape;
// I use this to put text on the screen
void Sprint(int x, int y, char *st)
{
int l,i;
l=strlen(st); // see how many characters are in text string.
glRasterPos2i(x, y); // location to start printing text
for(i=0; i < l; i++) // loop until i is greater then l
{
glutBitmapCharacter(GLUT_BITMAP_TIMES_ROMAN_24, st[i]); // Print a character on the screen
}
}
// This creates the spinning of the cube.
static void TimeEvent(int te)
{
spin++; // increase cube rotation by 1
if (spin > 360) spin = 0; // if over 360 degress, start back at zero.
glutSetWindow(window_1);
glutPostRedisplay(); // Update screen with new rotation data
glutSetWindow(window_2);
glutPostRedisplay(); // Update screen with new rotation data
glutTimerFunc(100, TimeEvent, 1); // Reset our timmer.
}
// Setup our Opengl world, called once at startup.
void init(void)
{
glClearColor (0.0, 0.0, 0.0, 0.0); // When screen cleared, use black.
glShadeModel (GL_SMOOTH); // How the object color will be rendered smooth or flat
glEnable(GL_DEPTH_TEST); // Check depth when rendering
// Lighting is added to scene
glLightfv(GL_LIGHT1 ,GL_AMBIENT, LightAmbient);
glLightfv(GL_LIGHT1 ,GL_DIFFUSE, LightDiffuse);
glLightfv(GL_LIGHT1 ,GL_POSITION, LightPosition);
glEnable(GL_LIGHTING); // Turn on lighting
glEnable(GL_LIGHT1); // Turn on light 1
}
// Draw our world
void display_1(void)
{
char *p;
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); //Clear the screen
glMatrixMode (GL_PROJECTION); // Tell opengl that we are doing project matrix work
glLoadIdentity(); // Clear the matrix
glOrtho(-8.0, 8.0, -8.0, 8.0, 0.0, 30.0); // Setup an Ortho view
glMatrixMode(GL_MODELVIEW); // Tell opengl that we are doing model matrix work. (drawing)
glLoadIdentity(); // Clear the model matrix
glColor3f(1.0, 1.0, 1.0);
if (shape == 0) Sprint(-3, -7 ,"Solid Cube");
if (shape == 1) Sprint(-3, -7 ,"Solid Cone");
if (shape == 2) Sprint(-3, -7 ,"Solid Sphere");
if (shape == 3) Sprint(-3, -7 ,"Solid Torus");
if (shape == 4) Sprint(-3, -7 ,"Solid Dodecahedron");
if (shape == 5) Sprint(-3, -7 ,"Solid Octahedron");
if (shape == 6) Sprint(-3, -7 ,"Solid Tetrahedron");
if (shape == 7) Sprint(-3, -7 ,"Solid Icosahedron");
if (shape == 8) Sprint(-3, -7 ,"Solid Teapot");
// Setup view, and print view state on screen
if (view_state == 1)
{
glColor3f(1.0, 1.0, 1.0);
Sprint(-2, 4, "Perspective view");
glMatrixMode (GL_PROJECTION);
glLoadIdentity();
gluPerspective(60, 1, 1, 30);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}else
{
glColor3f(1.0, 1.0, 1.0);
Sprint(-2, 4, "Ortho view");
}
glColor3f(0.0, 0.0, 1.0); // Cube color
// Lighting on/off
if (light_state == 1)
{
glDisable(GL_LIGHTING); // Turn off lighting
glDisable(GL_COLOR_MATERIAL); // Turn off material, which needs lighting to work
}else
{
glEnable(GL_LIGHTING); // Turn on lighting
glEnable(GL_COLOR_MATERIAL); // Turn on material settings
glColorMaterial(GL_FRONT, GL_AMBIENT);
glColor4f(0.65, 0.65, 0.65, 0.4);
glColorMaterial(GL_FRONT, GL_EMISSION);
glColor4f(0.10, 0.10, 0.10, 0.0);
glColorMaterial(GL_FRONT, GL_SPECULAR);
glColor4f(0.5, 0.5, 0.5, 0.4);
glColorMaterial(GL_FRONT, GL_DIFFUSE);
glColor4f(0.85, 0.85, 0.85, 0.4);
}
gluLookAt(0, 0, 20, 0, 0, 0, 0, 1, 0);
//glRotatef(45, 1.0, 1.0, 0.0); // rotate cube
glRotatef(spin++, 1.0, 1.0, 1.0); // spin cube
if (shape == 0) glutSolidCube(10); // Draw a cube
if (shape == 1) glutSolidCone(5,10, 16,16); // Draw a Cone
if (shape == 2) glutSolidSphere(5, 16,16); // Draw a Sphere
if (shape == 3) glutSolidTorus(2.5, 5, 16, 16);
if (shape == 4)
{
glScalef(3.5, 3.5, 3.5);
glutSolidDodecahedron();
}
if (shape == 5)
{
glScalef(5.0, 5.0, 5.0);
glutSolidOctahedron();
}
if (shape == 6)
{
glScalef(5.0, 5.0, 5.0);
glutSolidTetrahedron();
}
if (shape == 7)
{
glScalef(5.0, 5.0, 5.0);
glutSolidIcosahedron();
}
if (shape == 8) glutSolidTeapot(5);
glutSwapBuffers();
}
void display_2(void)
{
char *p;
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); //Clear the screen
glMatrixMode (GL_PROJECTION); // Tell opengl that we are doing project matrix work
glLoadIdentity(); // Clear the matrix
glOrtho(-8.0, 8.0, -8.0, 8.0, 0.0, 30.0); // Setup an Ortho view
glMatrixMode(GL_MODELVIEW); // Tell opengl that we are doing model matrix work. (drawing)
glLoadIdentity(); // Clear the model matrix
glColor3f(1.0, 1.0, 1.0);
if (shape == 0) Sprint(-3, -7 ,"Wire Cube");
if (shape == 1) Sprint(-3, -7 ,"Wire Cone");
if (shape == 2) Sprint(-3, -7 ,"Wire Sphere");
if (shape == 3) Sprint(-3, -7 ,"Wire Torus");
if (shape == 4) Sprint(-3, -7 ,"Wire Dodecahedron");
if (shape == 5) Sprint(-3, -7 ,"Wire Octahedron");
if (shape == 6) Sprint(-3, -7 ,"Wire Tetrahedron");
if (shape == 7) Sprint(-3, -7 ,"Wire Icosahedron");
if (shape == 8) Sprint(-3, -7 ,"Wire Teapot");
// Setup view, and print view state on screen
if (view_state == 1)
{
glColor3f(1.0, 1.0, 1.0);
Sprint(-2, 4, "Perspective view");
glMatrixMode (GL_PROJECTION);
glLoadIdentity();
gluPerspective(60, 1, 1, 30);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}else
{
glColor3f(1.0, 1.0, 1.0);
Sprint(-2, 4, "Ortho view");
}
glColor3f(0.0, 0.0, 1.0); // Cube color
// Lighting on/off
if (light_state == 1)
{
glDisable(GL_LIGHTING); // Turn off lighting
glDisable(GL_COLOR_MATERIAL); // Turn off material, which needs lighting to work
}else
{
glEnable(GL_LIGHTING); // Turn on lighting
glEnable(GL_COLOR_MATERIAL); // Turn on material settings
glColorMaterial(GL_FRONT, GL_AMBIENT);
glColor4f(0.65, 0.65, 0.65, 0.4);
glColorMaterial(GL_FRONT, GL_EMISSION);
glColor4f(0.10, 0.10, 0.10, 0.0);
glColorMaterial(GL_FRONT, GL_SPECULAR);
glColor4f(0.5, 0.5, 0.5, 0.4);
glColorMaterial(GL_FRONT, GL_DIFFUSE);
glColor4f(0.85, 0.85, 0.85, 0.4);
}
gluLookAt(0, 0, 20, 0, 0, 0, 0, 1, 0);
//glRotatef(45, 1.0, 1.0, 0.0); // rotate cube
glRotatef(spin++, 1.0, 1.0, 1.0); // spin cube
if (shape == 0) glutWireCube(10); // Draw a cube
if (shape == 1) glutWireCone(5,10, 16,16); // Draw a Cone
if (shape == 2) glutWireSphere(5, 16,16); // Draw a Sphere
if (shape == 3) glutWireTorus(2.5, 5, 16, 16);
if (shape == 4)
{
glScalef(3.5, 3.5, 3.5);
glutSolidDodecahedron();
}
if (shape == 5)
{
glScalef(5.0, 5.0, 5.0);
glutWireOctahedron();
}
if (shape == 6)
{
glScalef(5.0, 5.0, 5.0);
glutWireTetrahedron();
}
if (shape == 7)
{
glScalef(5.0, 5.0, 5.0);
glutWireIcosahedron();
}
if (shape == 8) glutWireTeapot(5);
glutSwapBuffers();
}
// This is called when the window has been resized.
void reshape_1 (int w, int h)
{
glViewport (0, 0, (GLsizei) w, (GLsizei) h);
glMatrixMode (GL_PROJECTION);
glLoadIdentity();
}
// This is called when the window has been resized.
void reshape_2 (int w, int h)
{
glViewport (0, 0, (GLsizei) w, (GLsizei) h);
glMatrixMode (GL_PROJECTION);
glLoadIdentity();
}
// Read the keyboard
void keyboard (unsigned char key, int x, int y)
{
switch (key)
{
case 'v':
case 'V':
view_state = abs(view_state -1);
break;
case 'l':
case 'L':
light_state = abs(light_state -1);
break;
case 's':
case 'S':
shape++;
break;
case 27:
exit(0); // exit program when [ESC] key presseed
break;
default:
break;
}
if (shape > 8) shape = 0;
}
// Main program
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB);
glutInitWindowSize (500, 500);
glutInitWindowPosition (10, 10);
glutTimerFunc(10, TimeEvent, 1);
window_1 = glutCreateWindow (argv[0]);
glutSetWindowTitle("GlutWindow 1");
init();
glutDisplayFunc(display_1);
glutReshapeFunc(reshape_1);
glutKeyboardFunc(keyboard);
window_2 = glutCreateWindow (argv[0]);
glutSetWindowTitle("GlutWindow 2");
init();
glutDisplayFunc(display_2);
glutReshapeFunc(reshape_2);
glutMainLoop();
return 0;
}
// Glutdualwindow.c
// By Eric Stringer 2002
// Simple examples of OpenGL and Glut usage.
// Keyboard input
// 'v' = view ortho/perspective
// 'l' = lighting on/off
#include <windows.h> // This header file will be needed for some windows compilers
//#include <GL/gl.h> // gl.h and glu.h also maybe needed for some compilers
//#include <GL/glu.h>
#include <GL/glut.h> // glut (gl utility toolkit) basic windows functions, keyboard, mouse.
#include <stdio.h> // standard (I/O library)
#include <stdlib.h> // standard library (set of standard C functions
#include <math.h> // Math library (Higher math functions)
// lighting
GLfloat LightAmbient[]= { 0.2f, 0.2f, 0.2f, 1.0f };
GLfloat LightDiffuse[]= { 0.5f, 0.5f, 0.5f, 1.0f };
GLfloat LightPosition[]= { 5.0f, 5.0f, -10.0f, 1.0f };
GLfloat mat_specular[] = { 0.2, 0.2, 0.2, 1.0 };
int window_1, window_2;
static int view_state = 0, light_state = 0;
int spin;
int shape;
// I use this to put text on the screen
void Sprint(int x, int y, char *st)
{
int l,i;
l=strlen(st); // see how many characters are in text string.
glRasterPos2i(x, y); // location to start printing text
for(i=0; i < l; i++) // loop until i is greater then l
{
glutBitmapCharacter(GLUT_BITMAP_TIMES_ROMAN_24, st[i]); // Print a character on the screen
}
}
// This creates the spinning of the cube.
static void TimeEvent(int te)
{
spin++; // increase cube rotation by 1
if (spin > 360) spin = 0; // if over 360 degress, start back at zero.
glutSetWindow(window_1);
glutPostRedisplay(); // Update screen with new rotation data
glutSetWindow(window_2);
glutPostRedisplay(); // Update screen with new rotation data
glutTimerFunc(100, TimeEvent, 1); // Reset our timmer.
}
// Setup our Opengl world, called once at startup.
void init(void)
{
glClearColor (0.0, 0.0, 0.0, 0.0); // When screen cleared, use black.
glShadeModel (GL_SMOOTH); // How the object color will be rendered smooth or flat
glEnable(GL_DEPTH_TEST); // Check depth when rendering
// Lighting is added to scene
glLightfv(GL_LIGHT1 ,GL_AMBIENT, LightAmbient);
glLightfv(GL_LIGHT1 ,GL_DIFFUSE, LightDiffuse);
glLightfv(GL_LIGHT1 ,GL_POSITION, LightPosition);
glEnable(GL_LIGHTING); // Turn on lighting
glEnable(GL_LIGHT1); // Turn on light 1
}
// Draw our world
void display_1(void)
{
char *p;
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); //Clear the screen
glMatrixMode (GL_PROJECTION); // Tell opengl that we are doing project matrix work
glLoadIdentity(); // Clear the matrix
glOrtho(-8.0, 8.0, -8.0, 8.0, 0.0, 30.0); // Setup an Ortho view
glMatrixMode(GL_MODELVIEW); // Tell opengl that we are doing model matrix work. (drawing)
glLoadIdentity(); // Clear the model matrix
glColor3f(1.0, 1.0, 1.0);
if (shape == 0) Sprint(-3, -7 ,"Solid Cube");
if (shape == 1) Sprint(-3, -7 ,"Solid Cone");
if (shape == 2) Sprint(-3, -7 ,"Solid Sphere");
if (shape == 3) Sprint(-3, -7 ,"Solid Torus");
if (shape == 4) Sprint(-3, -7 ,"Solid Dodecahedron");
if (shape == 5) Sprint(-3, -7 ,"Solid Octahedron");
if (shape == 6) Sprint(-3, -7 ,"Solid Tetrahedron");
if (shape == 7) Sprint(-3, -7 ,"Solid Icosahedron");
if (shape == 8) Sprint(-3, -7 ,"Solid Teapot");
// Setup view, and print view state on screen
if (view_state == 1)
{
glColor3f(1.0, 1.0, 1.0);
Sprint(-2, 4, "Perspective view");
glMatrixMode (GL_PROJECTION);
glLoadIdentity();
gluPerspective(60, 1, 1, 30);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}else
{
glColor3f(1.0, 1.0, 1.0);
Sprint(-2, 4, "Ortho view");
}
glColor3f(0.0, 0.0, 1.0); // Cube color
// Lighting on/off
if (light_state == 1)
{
glDisable(GL_LIGHTING); // Turn off lighting
glDisable(GL_COLOR_MATERIAL); // Turn off material, which needs lighting to work
}else
{
glEnable(GL_LIGHTING); // Turn on lighting
glEnable(GL_COLOR_MATERIAL); // Turn on material settings
glColorMaterial(GL_FRONT, GL_AMBIENT);
glColor4f(0.65, 0.65, 0.65, 0.4);
glColorMaterial(GL_FRONT, GL_EMISSION);
glColor4f(0.10, 0.10, 0.10, 0.0);
glColorMaterial(GL_FRONT, GL_SPECULAR);
glColor4f(0.5, 0.5, 0.5, 0.4);
glColorMaterial(GL_FRONT, GL_DIFFUSE);
glColor4f(0.85, 0.85, 0.85, 0.4);
}
gluLookAt(0, 0, 20, 0, 0, 0, 0, 1, 0);
//glRotatef(45, 1.0, 1.0, 0.0); // rotate cube
glRotatef(spin++, 1.0, 1.0, 1.0); // spin cube
if (shape == 0) glutSolidCube(10); // Draw a cube
if (shape == 1) glutSolidCone(5,10, 16,16); // Draw a Cone
if (shape == 2) glutSolidSphere(5, 16,16); // Draw a Sphere
if (shape == 3) glutSolidTorus(2.5, 5, 16, 16);
if (shape == 4)
{
glScalef(3.5, 3.5, 3.5);
glutSolidDodecahedron();
}
if (shape == 5)
{
glScalef(5.0, 5.0, 5.0);
glutSolidOctahedron();
}
if (shape == 6)
{
glScalef(5.0, 5.0, 5.0);
glutSolidTetrahedron();
}
if (shape == 7)
{
glScalef(5.0, 5.0, 5.0);
glutSolidIcosahedron();
}
if (shape == 8) glutSolidTeapot(5);
glutSwapBuffers();
}
void display_2(void)
{
char *p;
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); //Clear the screen
glMatrixMode (GL_PROJECTION); // Tell opengl that we are doing project matrix work
glLoadIdentity(); // Clear the matrix
glOrtho(-8.0, 8.0, -8.0, 8.0, 0.0, 30.0); // Setup an Ortho view
glMatrixMode(GL_MODELVIEW); // Tell opengl that we are doing model matrix work. (drawing)
glLoadIdentity(); // Clear the model matrix
glColor3f(1.0, 1.0, 1.0);
if (shape == 0) Sprint(-3, -7 ,"Wire Cube");
if (shape == 1) Sprint(-3, -7 ,"Wire Cone");
if (shape == 2) Sprint(-3, -7 ,"Wire Sphere");
if (shape == 3) Sprint(-3, -7 ,"Wire Torus");
if (shape == 4) Sprint(-3, -7 ,"Wire Dodecahedron");
if (shape == 5) Sprint(-3, -7 ,"Wire Octahedron");
if (shape == 6) Sprint(-3, -7 ,"Wire Tetrahedron");
if (shape == 7) Sprint(-3, -7 ,"Wire Icosahedron");
if (shape == 8) Sprint(-3, -7 ,"Wire Teapot");
// Setup view, and print view state on screen
if (view_state == 1)
{
glColor3f(1.0, 1.0, 1.0);
Sprint(-2, 4, "Perspective view");
glMatrixMode (GL_PROJECTION);
glLoadIdentity();
gluPerspective(60, 1, 1, 30);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}else
{
glColor3f(1.0, 1.0, 1.0);
Sprint(-2, 4, "Ortho view");
}
glColor3f(0.0, 0.0, 1.0); // Cube color
// Lighting on/off
if (light_state == 1)
{
glDisable(GL_LIGHTING); // Turn off lighting
glDisable(GL_COLOR_MATERIAL); // Turn off material, which needs lighting to work
}else
{
glEnable(GL_LIGHTING); // Turn on lighting
glEnable(GL_COLOR_MATERIAL); // Turn on material settings
glColorMaterial(GL_FRONT, GL_AMBIENT);
glColor4f(0.65, 0.65, 0.65, 0.4);
glColorMaterial(GL_FRONT, GL_EMISSION);
glColor4f(0.10, 0.10, 0.10, 0.0);
glColorMaterial(GL_FRONT, GL_SPECULAR);
glColor4f(0.5, 0.5, 0.5, 0.4);
glColorMaterial(GL_FRONT, GL_DIFFUSE);
glColor4f(0.85, 0.85, 0.85, 0.4);
}
gluLookAt(0, 0, 20, 0, 0, 0, 0, 1, 0);
//glRotatef(45, 1.0, 1.0, 0.0); // rotate cube
glRotatef(spin++, 1.0, 1.0, 1.0); // spin cube
if (shape == 0) glutWireCube(10); // Draw a cube
if (shape == 1) glutWireCone(5,10, 16,16); // Draw a Cone
if (shape == 2) glutWireSphere(5, 16,16); // Draw a Sphere
if (shape == 3) glutWireTorus(2.5, 5, 16, 16);
if (shape == 4)
{
glScalef(3.5, 3.5, 3.5);
glutSolidDodecahedron();
}
if (shape == 5)
{
glScalef(5.0, 5.0, 5.0);
glutWireOctahedron();
}
if (shape == 6)
{
glScalef(5.0, 5.0, 5.0);
glutWireTetrahedron();
}
if (shape == 7)
{
glScalef(5.0, 5.0, 5.0);
glutWireIcosahedron();
}
if (shape == 8) glutWireTeapot(5);
glutSwapBuffers();
}
// This is called when the window has been resized.
void reshape_1 (int w, int h)
{
glViewport (0, 0, (GLsizei) w, (GLsizei) h);
glMatrixMode (GL_PROJECTION);
glLoadIdentity();
}
// This is called when the window has been resized.
void reshape_2 (int w, int h)
{
glViewport (0, 0, (GLsizei) w, (GLsizei) h);
glMatrixMode (GL_PROJECTION);
glLoadIdentity();
}
// Read the keyboard
void keyboard (unsigned char key, int x, int y)
{
switch (key)
{
case 'v':
case 'V':
view_state = abs(view_state -1);
break;
case 'l':
case 'L':
light_state = abs(light_state -1);
break;
case 's':
case 'S':
shape++;
break;
case 27:
exit(0); // exit program when [ESC] key presseed
break;
default:
break;
}
if (shape > 8) shape = 0;
}
// Main program
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB);
glutInitWindowSize (500, 500);
glutInitWindowPosition (10, 10);
glutTimerFunc(10, TimeEvent, 1);
window_1 = glutCreateWindow (argv[0]);
glutSetWindowTitle("GlutWindow 1");
init();
glutDisplayFunc(display_1);
glutReshapeFunc(reshape_1);
glutKeyboardFunc(keyboard);
window_2 = glutCreateWindow (argv[0]);
glutSetWindowTitle("GlutWindow 2");
init();
glutDisplayFunc(display_2);
glutReshapeFunc(reshape_2);
glutMainLoop();
return 0;
}
J'ai couru l'exemple de code à Windows 7, mais je devais remplacer une ligne de glutIntit à
glutInit(&argc, argv);
Vous devez coller autant de code pertinent de votre source que nécessaire pour obtenir une réponse complète (tout en gardant votre référence) car les liens peuvent se dégrader avec le temps. –
Bien que cette question est assez vieux, il convient de noter que le comportement de libération de multiples contextes partagés devrait être considéré, car des contextes changeants peuvent provoquer des bouffées partielles ou même complètes. ("Flush" signifie que toutes les commandes opengl sont exécutées avant de retourner, ce qui est un showstopper absolu.) – RecursiveExceptionException