void glutDestroyWindow(int win)
{
glFBDevMakeCurrent( NULL, NULL, NULL);
glFBDevDestroyContext(Context);
glFBDevDestroyBuffer(Buffer);
glFBDevDestroyVisual(Visual);
Visual = NULL;
}
int glutCreateWindow (const char *title)
{
if(Initialized == 0) {
int argc = 0;
char *argv[] = {NULL};
glutInit(&argc, argv);
}
if(Context)
return 0;
if(DisplayMode & GLUT_INDEX)
VarInfo.bits_per_pixel = 8;
else
if(VarInfo.bits_per_pixel == 8)
VarInfo.bits_per_pixel = 32;
if (DesiredDepth)
VarInfo.bits_per_pixel = DesiredDepth;
VarInfo.xoffset = 0;
VarInfo.yoffset = 0;
VarInfo.nonstd = 0;
VarInfo.vmode &= ~FB_VMODE_YWRAP; /* turn off scrolling */
SetVideoMode();
CreateVisual();
CreateBuffer();
if(!(Context = glFBDevCreateContext(Visual, NULL))) {
sprintf(exiterror, "Failure to create Context\n");
exit(0);
}
if(!glFBDevMakeCurrent( Context, Buffer, Buffer )) {
sprintf(exiterror, "Failure to Make Current\n");
exit(0);
}
InitializeCursor();
InitializeMenus();
glutSetWindowTitle(title);
signal(SIGWINCH, SignalWinch);
Visible = 1;
VisibleSwitch = 1;
Redisplay = 1;
return 1;
}
void
glFBDevDestroyBuffer( GLFBDevBufferPtr buffer )
{
if (buffer) {
/* check if destroying the current buffer */
GLFBDevBufferPtr curDraw = glFBDevGetCurrentDrawBuffer();
GLFBDevBufferPtr curRead = glFBDevGetCurrentReadBuffer();
if (buffer == curDraw || buffer == curRead) {
glFBDevMakeCurrent( NULL, NULL, NULL);
}
{
struct gl_framebuffer *fb = &buffer->glframebuffer;
_mesa_reference_framebuffer(&fb, NULL);
}
}
}
void glutLeaveGameMode(void)
{
if(!GameMode)
return;
glFBDevDestroyContext(GameContext);
glFBDevDestroyVisual(Visual);
VarInfo = NormVarInfo;
Visual = NormVisual;
if(Visual) {
SetVideoMode();
CreateBuffer();
if(!glFBDevMakeCurrent( Context, Buffer, Buffer )) {
sprintf(exiterror, "Failure to Make Current\n");
exit(0);
}
Redisplay = 1;
}
KeyboardFunc = KeyFuncs[0];
KeyboardUpFunc = KeyFuncs[1];
DisplayFunc = NormFuncs[0];
ReshapeFunc = NormFuncs[1];
MouseFunc = NormFuncs[2];
MotionFunc = NormFuncs[3];
PassiveMotionFunc = NormFuncs[4];
VisibilityFunc = NormFuncs[5];
SpecialFunc = NormFuncs[6];
SpecialUpFunc = NormFuncs[7];
GameMode = 0;
}
static void
gltest( void )
{
static const int attribs[] = {
GLFBDEV_DOUBLE_BUFFER,
GLFBDEV_DEPTH_SIZE, 16,
GLFBDEV_NONE
};
GLFBDevContextPtr ctx;
GLFBDevBufferPtr buf;
GLFBDevVisualPtr vis;
int bytes, r, g, b, a;
float ang;
printf("GLFBDEV_VENDOR = %s\n", glFBDevGetString(GLFBDEV_VENDOR));
printf("GLFBDEV_VERSION = %s\n", glFBDevGetString(GLFBDEV_VERSION));
/* framebuffer size */
bytes = VarInfo.xres_virtual * VarInfo.yres_virtual * VarInfo.bits_per_pixel / 8;
vis = glFBDevCreateVisual( &FixedInfo, &VarInfo, attribs );
assert(vis);
buf = glFBDevCreateBuffer( &FixedInfo, &VarInfo, vis, FrameBuffer, NULL, bytes );
assert(buf);
ctx = glFBDevCreateContext( vis, NULL );
assert(buf);
b = glFBDevMakeCurrent( ctx, buf, buf );
assert(b);
/*printf("GL_EXTENSIONS: %s\n", glGetString(GL_EXTENSIONS));*/
glGetIntegerv(GL_RED_BITS, &r);
glGetIntegerv(GL_GREEN_BITS, &g);
glGetIntegerv(GL_BLUE_BITS, &b);
glGetIntegerv(GL_ALPHA_BITS, &a);
printf("RED_BITS=%d GREEN_BITS=%d BLUE_BITS=%d ALPHA_BITS=%d\n",
r, g, b, a);
glClearColor(0.5, 0.5, 1.0, 0);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glFrustum(-1, 1, -1, 1, 2, 30);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(0, 0, -15);
glViewport(0, 0, VarInfo.xres_virtual, VarInfo.yres_virtual);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glEnable(GL_DEPTH_TEST);
for (ang = 0; ang <= 180; ang += 15) {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glRotatef(ang, 1, 0, 0);
glutSolidTorus(1, 3, 40, 20);
glPopMatrix();
glFBDevSwapBuffers(buf);
}
/* clean up */
b = glFBDevMakeCurrent( NULL, NULL, NULL);
assert(b);
glFBDevDestroyContext(ctx);
glFBDevDestroyBuffer(buf);
glFBDevDestroyVisual(vis);
}
int glutEnterGameMode(void)
{
if(ActiveMenu)
return 0;
if(!ModePossible)
return 0;
if(GameMode) {
if(!memcmp(&GameVarInfo, &VarInfo, sizeof VarInfo)) {
DispChanged = 0;
return 1;
}
glutLeaveGameMode();
}
if (ioctl(FrameBufferFD, FBIOPUT_VSCREENINFO, &GameVarInfo))
return 0;
NormVarInfo = VarInfo;
VarInfo = GameVarInfo;
NormVisual = Visual;
SetVideoMode();
CreateVisual();
CreateBuffer();
if(!(GameContext = glFBDevCreateContext(Visual, NULL))) {
sprintf(exiterror, "Failure to create Context\n");
exit(0);
}
if(!glFBDevMakeCurrent( GameContext, Buffer, Buffer )) {
sprintf(exiterror, "Failure to Make Game Current\n");
exit(0);
}
InitializeCursor();
KeyFuncs[0] = KeyboardFunc;
KeyFuncs[1] = KeyboardUpFunc;
NormFuncs[0] = DisplayFunc;
NormFuncs[1] = ReshapeFunc;
NormFuncs[2] = MouseFunc;
NormFuncs[3] = MotionFunc;
NormFuncs[4] = PassiveMotionFunc;
NormFuncs[5] = VisibilityFunc;
NormFuncs[6] = SpecialFunc;
NormFuncs[7] = SpecialUpFunc;
DisplayFunc = NULL;
ReshapeFunc = NULL;
KeyboardFunc = NULL;
KeyboardUpFunc = NULL;
MouseFunc = NULL;
MotionFunc = NULL;
PassiveMotionFunc = NULL;
VisibilityFunc = NULL;
SpecialFunc = SpecialUpFunc = NULL;
DispChanged = 1;
GameMode = 1;
Visible = 1;
VisibleSwitch = 1;
Redisplay = 1;
return 1;
}
void glutMainLoop(void)
{
int idleiters;
if(ReshapeFunc)
ReshapeFunc(VarInfo.xres, VarInfo.yres);
if(!DisplayFunc) {
sprintf(exiterror, "Fatal Error: No Display Function registered\n");
exit(0);
}
for(;;) {
ProcessTimers();
if(Active)
ReceiveInput();
else
if(VisiblePoll)
TestVisible();
if(IdleFunc)
IdleFunc();
if(VisibleSwitch) {
VisibleSwitch = 0;
if(VisibilityFunc)
VisibilityFunc(Visible ? GLUT_VISIBLE : GLUT_NOT_VISIBLE);
}
if(Resized) {
SetVideoMode();
CreateBuffer();
if(!glFBDevMakeCurrent( Context, Buffer, Buffer )) {
sprintf(exiterror, "Failure to Make Current\n");
exit(0);
}
InitializeMenus();
if(ReshapeFunc)
ReshapeFunc(VarInfo.xres, VarInfo.yres);
Redisplay = 1;
Resized = 0;
}
if(Visible && Redisplay) {
Redisplay = 0;
EraseCursor();
DisplayFunc();
if(!(DisplayMode & GLUT_DOUBLE)) {
if(ActiveMenu)
DrawMenus();
DrawCursor();
}
idleiters = 0;
} else {
/* we sleep if not receiving redisplays, and
the main loop is running faster than 2khz */
static int lasttime;
int time = glutGet(GLUT_ELAPSED_TIME);
if(time > lasttime) {
if(idleiters >= 2)
usleep(100);
idleiters = 0;
lasttime = time;
}
idleiters++;
}
}
}
