1.1 --- a/src/main.c	Thu Oct 17 09:32:42 2019 +0300
     1.2 +++ b/src/main.c	Mon Oct 28 16:07:25 2019 +0200
     1.3 @@ -5,6 +5,13 @@
     1.4  
     1.5  #define WCNAME	"livebg_test"
     1.6  
     1.7 +int colcycle_init(void);
     1.8 +void colcycle_cleanup(void);
     1.9 +void colcycle_draw(long time_msec);
    1.10 +
    1.11 +int scr_width, scr_height;
    1.12 +long upd_interval;
    1.13 +
    1.14  void draw(void);
    1.15  HWND create_window(int width, int height);
    1.16  int init_gl(void);
    1.17 @@ -25,7 +32,13 @@
    1.18  	}
    1.19  	if(init_gl() == -1) {
    1.20  		DestroyWindow(win);
    1.21 -		return 1;
    1.22 +		goto done;
    1.23 +	}
    1.24 +	if(colcycle_init() == -1) {
    1.25 +		wglMakeCurrent(0, 0);
    1.26 +		wglDeleteContext(ctx);
    1.27 +		DestroyWindow(win);
    1.28 +		goto done;
    1.29  	}
    1.30  
    1.31  	start_time = timeGetTime();
    1.32 @@ -39,7 +52,6 @@
    1.33  		}
    1.34  
    1.35  		draw();
    1.36 -		Sleep(10);
    1.37  	}
    1.38  done:
    1.39  
    1.40 @@ -51,22 +63,17 @@
    1.41  
    1.42  void draw(void)
    1.43  {
    1.44 -	float tm = (timeGetTime() - start_time) / 1000.0f;
    1.45 -	glClearColor(0.1, 0.1, 0.1, 1);
    1.46 -	glClear(GL_COLOR_BUFFER_BIT);
    1.47 +	long now, wait_msec;
    1.48 +	long tmsec = timeGetTime() - start_time;
    1.49  
    1.50 -	glMatrixMode(GL_MODELVIEW);
    1.51 -	glLoadIdentity();
    1.52 -	glRotatef(tm * 10.0f, 0, 0, 1);
    1.53 +	colcycle_draw(tmsec);
    1.54  
    1.55 -	glBegin(GL_TRIANGLES);
    1.56 -	glColor3f(1, 0, 0);
    1.57 -	glVertex2f(-0.5, -0.5);
    1.58 -	glColor3f(0, 1, 0);
    1.59 -	glVertex2f(0.5, -0.5);
    1.60 -	glColor3f(0, 0, 1);
    1.61 -	glVertex2f(0, 0.68);
    1.62 -	glEnd();
    1.63 +	now = timeGetTime() - start_time;
    1.64 +	wait_msec = upd_interval / 1000 - (now - tmsec);
    1.65 +	if(wait_msec > 0) {
    1.66 +		fprintf(stderr, "wait_msec: %ld\n", wait_msec);
    1.67 +		Sleep(wait_msec);
    1.68 +	}
    1.69  
    1.70  	SwapBuffers(dc);
    1.71  }
    1.72 @@ -131,6 +138,9 @@
    1.73  		return 0;
    1.74  	}
    1.75  	dc = GetDC(win);
    1.76 +
    1.77 +	scr_width = width;
    1.78 +	scr_height = height;
    1.79  	return win;
    1.80  }
    1.81  
    1.82 @@ -170,6 +180,9 @@
    1.83  		break;
    1.84  
    1.85  	case WM_CLOSE:
    1.86 +		colcycle_cleanup();
    1.87 +		wglMakeCurrent(0, 0);
    1.88 +		wglDeleteContext(ctx);
    1.89  		DestroyWindow(win);
    1.90  		break;
    1.91