diff options
| author | Morten Hustveit <morten.hustveit@gmail.com> | 2014-12-12 15:32:34 -0800 |
|---|---|---|
| committer | Morten Hustveit <morten.hustveit@gmail.com> | 2014-12-12 15:32:34 -0800 |
| commit | dbab279df7ffcf5dd55128a1bc44ea52d7584859 (patch) | |
| tree | 527e41c971620b4a393545e97cb5f7c6cd37cf01 /main_glut.c | |
| parent | e11fb53429bc923a9b757bba307c6c8f6f0bf7a9 (diff) | |
main_glut.c: Restrict raster position to inside of target window
Diffstat (limited to 'main_glut.c')
| -rw-r--r-- | main_glut.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/main_glut.c b/main_glut.c index 1717898..272b17e 100644 --- a/main_glut.c +++ b/main_glut.c @@ -34,7 +34,11 @@ display(void) { unsigned char* buffer = calloc(4, WIDTH * HEIGHT); trace_scene(time, buffer, threaded); glClear(GL_COLOR_BUFFER_BIT); - glRasterPos2d(-(double)WIDTH / viewport_width, -(double)HEIGHT / viewport_height); + auto raster_x = -(double)WIDTH / viewport_width; + auto raster_y = -(double)HEIGHT / viewport_height; + if (raster_x < -1.0) raster_x = -1.0; + if (raster_y < -1.0) raster_y = -1.0; + glRasterPos2d(raster_x, raster_y); glDrawPixels(WIDTH, HEIGHT, GL_BGRA, GL_UNSIGNED_BYTE, buffer); free(buffer); |