GfxTinyGL::~GfxTinyGL() {
delete[] _storedDisplay;
if (_zb) {
TinyGL::glClose();
ZB_close(_zb);
}
}
void
ostgl_delete_context(ostgl_context *context)
{
int i;
for (i = 0; i < context->numbuffers; i++) {
ZB_close(context->zbs[i]);
}
gl_free(context->zbs);
gl_free(context->framebuffers);
gl_free(context);
if (--buffercnt == 0) {
glClose();
}
}
int main(int argc, char **argv) {
// initialize SDL video:
int winSizeX=640;
int winSizeY=480;
if(SDL_Init(SDL_INIT_VIDEO)<0) {
fprintf(stderr,"ERROR: cannot initialize SDL video.\n");
return 1;
}
SDL_Surface* screen = NULL;
if((screen=SDL_SetVideoMode( winSizeX, winSizeY, 32, SDL_SWSURFACE)) == 0 ) {
fprintf(stderr,"ERROR: Video mode set failed.\n");
return 1;
}
// initialize TinyGL:
unsigned int pitch;
int mode;
switch( screen->format->BitsPerPixel ) {
case 8:
fprintf(stderr,"ERROR: Palettes are currently not supported.\n");
return 1;
case 16:
pitch = screen->pitch;
mode = ZB_MODE_5R6G5B;
break;
case 24:
pitch = ( screen->pitch * 2 ) / 3;
mode = ZB_MODE_RGB24;
break;
case 32:
pitch = screen->pitch / 2;
mode = ZB_MODE_RGBA;
break;
default:
return 1;
break;
}
ZBuffer *frameBuffer = ZB_open( winSizeX, winSizeY, mode, 0, 0, 0, 0);
glInit( frameBuffer );
// set viewport
glViewport( 0, 0, winSizeX, winSizeY);
glClearColor( 0.0f, 0.0f, 0.0f, 0.0f );
// main loop:
int frames=0;
int x=0;
double t, t0, fps;
char titlestr[ 200 ];
int running = GL_TRUE;
t0 = (double)SDL_GetTicks()/1000.0;
while( running ) {
// calculate and display FPS (frames per second):
t = (double)SDL_GetTicks()/1000.0;
if( (t-t0) > 1.0 || frames == 0 ) {
fps = (double)frames / (t-t0);
sprintf( titlestr, "Spinning Triangle (%.1f FPS)", fps );
SDL_WM_SetCaption(titlestr,0);
t0 = t;
frames = 0;
}
++frames;
// Clear color buffer
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// Select and setup the projection matrix
glMatrixMode( GL_PROJECTION );
glLoadIdentity();
gluPerspective( 65.0f, (GLfloat)winSizeX/(GLfloat)winSizeY, 1.0f, 100.0f );
// Select and setup the modelview matrix
glMatrixMode( GL_MODELVIEW );
glLoadIdentity();
glRotatef(-90, 1,0,0);
glTranslatef(0,0,-1.0f);
// Draw a rotating colorful triangle
glTranslatef( 0.0f, 14.0f, 0.0f );
glRotatef( 0.3*(GLfloat)x + (GLfloat)t*100.0f, 0.0f, 0.0f, 1.0f );
glBegin( GL_TRIANGLES );
glColor3f( 1.0f, 0.0f, 0.0f );
glVertex3f( -5.0f, 0.0f, -4.0f );
glColor3f( 0.0f, 1.0f, 0.0f );
glVertex3f( 5.0f, 0.0f, -4.0f );
glColor3f( 0.0f, 0.0f, 1.0f );
glVertex3f( 0.0f, 0.0f, 6.0f );
glEnd();
// swap buffers:
if ( SDL_MUSTLOCK(screen) && (SDL_LockSurface(screen)<0) ) {
fprintf(stderr, "SDL ERROR: Can't lock screen: %s\n", SDL_GetError());
return 1;
}
ZB_copyFrameBuffer(frameBuffer, screen->pixels, pitch);
if ( SDL_MUSTLOCK(screen) ) SDL_UnlockSurface(screen);
SDL_Flip(screen);
// check if the ESC key was pressed or the window was closed:
SDL_Event evt;
while( SDL_PollEvent( &evt ) ) switch(evt.type) {
case SDL_KEYDOWN:
if(evt.key.keysym.sym==SDLK_ESCAPE)
running=0;
break;
case SDL_QUIT:
running=0;
break;
}
}
// cleanup:
ZB_close(frameBuffer);
if(SDL_WasInit(SDL_INIT_VIDEO))
SDL_QuitSubSystem(SDL_INIT_VIDEO);
SDL_Quit();
return 0;
}
