josh/sdl-opengl-bare-d
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add timer to push display event

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This commit is contained in:
Josh Holtrop 2013-02-02 21:43:48 -05:00
parent f05afa10b3
commit 3fbc5aa16d
1 changed files with 19 additions and 1 deletions
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20
sdl_opengl_bare.d
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@ -5,6 +5,7 @@ import derelict.opengl.glu;
enum int WIDTH = 800; enum int WIDTH = 800;
enum int HEIGHT = 600; enum int HEIGHT = 600;
static bool drawing = false;
void init() void init()
{ {
@ -21,6 +22,7 @@ void init()
void display() void display()
{ {
drawing = true;
glClear(GL_COLOR_BUFFER_BIT); glClear(GL_COLOR_BUFFER_BIT);
glBegin(GL_QUADS); glBegin(GL_QUADS);
glColor3f(1, 1, 1); glColor3f(1, 1, 1);
@ -33,6 +35,18 @@ void display()
glVertex3f(5.0, -5.0, 0.0); glVertex3f(5.0, -5.0, 0.0);
glEnd(); glEnd();
SDL_GL_SwapBuffers(); SDL_GL_SwapBuffers();
drawing = false;
}
extern (C) Uint32 timer_callback(Uint32 interval, void *param)
{
if (!drawing)
{
SDL_Event event;
event.type = SDL_USEREVENT;
SDL_PushEvent(&event);
}
return interval;
} }
int main(char[][] args) int main(char[][] args)
@ -58,8 +72,8 @@ int main(char[][] args)
} }
init(); init();
display();
SDL_Event event; SDL_Event event;
SDL_AddTimer(1000 / 50, &timer_callback, null);
while (SDL_WaitEvent(&event)) while (SDL_WaitEvent(&event))
{ {
if (event.type == SDL_QUIT) if (event.type == SDL_QUIT)
@ -69,6 +83,10 @@ int main(char[][] args)
if (event.key.keysym.sym == SDLK_ESCAPE) if (event.key.keysym.sym == SDLK_ESCAPE)
break; break;
} }
else if (event.type == SDL_USEREVENT)
{
display();
}
} }
SDL_Quit(); SDL_Quit();