diff options
| -rw-r--r-- | libblastem.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/libblastem.c b/libblastem.c index 819f2fa..29dc54c 100644 --- a/libblastem.c +++ b/libblastem.c @@ -129,6 +129,13 @@ static void update_overscan(void) } } +static float get_aspect_ratio(void) +{ + float aspect_width = LINEBUF_SIZE - overscan_left - overscan_right; + float aspect_height = (video_standard == VID_NTSC ? 243 : 294) - overscan_top - overscan_bot; + return aspect_width / aspect_height; +} + static int32_t sample_rate; RETRO_API void retro_get_system_av_info(struct retro_system_av_info *info) { @@ -138,7 +145,7 @@ RETRO_API void retro_get_system_av_info(struct retro_system_av_info *info) info->geometry.base_height = (video_standard == VID_NTSC ? 243 : 294) - (overscan_top + overscan_bot); last_height = info->geometry.base_height; info->geometry.max_height = info->geometry.base_height * 2; - info->geometry.aspect_ratio = 0; + info->geometry.aspect_ratio = get_aspect_ratio(); double master_clock = video_standard == VID_NTSC ? 53693175 : 53203395; double lines = video_standard == VID_NTSC ? 262 : 313; info->timing.fps = master_clock / (3420.0 * lines); @@ -368,7 +375,7 @@ void render_framebuffer_updated(uint8_t which, int width) struct retro_game_geometry geometry = { .base_width = width, .base_height = height, - .aspect_ratio = (float)LINEBUF_SIZE / base_height + .aspect_ratio = get_aspect_ratio() }; retro_environment(RETRO_ENVIRONMENT_SET_GEOMETRY, &geometry); last_width = width; |