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Update libretro.c
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@ -741,33 +741,25 @@ static void extract_directory(char *buf, const char *path, size_t size)
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static double calculate_display_aspect_ratio(void)
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{
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if (config.aspect_ratio == 0)
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{
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if ((system_hw == SYSTEM_GG || system_hw == SYSTEM_GGMS) && config.overscan == 0 && config.gg_extra == 0)
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{
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return (6.0 / 5.0) * ((double)vwidth / (double)vheight);
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}
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}
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double videosamplerate, dotrate;
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bool is_h40 = false;
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if (config.aspect_ratio == 0)
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{
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if ((system_hw == SYSTEM_GG || system_hw == SYSTEM_GGMS) && config.overscan == 0 && config.gg_extra == 0)
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return (6.0 / 5.0) * ((double)vwidth / (double)vheight);
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}
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bool is_h40 = bitmap.viewport.w == 320; /* Could be read directly from the register as well. */
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is_h40 = bitmap.viewport.w == 320; /* Could be read directly from the register as well. */
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dotrate = system_clock / (is_h40 ? 8.0 : 10.0);
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double dotrate = system_clock / (is_h40 ? 8.0 : 10.0);
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double videosamplerate;
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if (config.aspect_ratio == 1) /* Force NTSC PAR */
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videosamplerate = 135000000.0 / 11.0;
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else if (config.aspect_ratio == 2) /* Force PAL PAR */
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videosamplerate = 14750000.0;
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else
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videosamplerate = vdp_pal ? 14750000.0 : 135000000.0 / 11.0;
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if (config.aspect_ratio == 1) /* Force NTSC PAR */
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{
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videosamplerate = 135000000.0 / 11.0;
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}
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else if (config.aspect_ratio == 2) /* Force PAL PAR */
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{
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videosamplerate = 14750000.0;
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}
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else
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{
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videosamplerate = vdp_pal ? 14750000.0 : 135000000.0 / 11.0;
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}
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return (videosamplerate / dotrate) * ((double)vwidth / ((double)vheight * 2.0));
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return (videosamplerate / dotrate) * ((double)vwidth / ((double)vheight * 2.0));
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}
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static bool update_viewport(void)
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@ -798,10 +790,10 @@ static bool update_viewport(void)
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static void check_variables(void)
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{
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unsigned orig_value;
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struct retro_system_av_info info;
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bool update_viewports = false;
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bool reinit = false;
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struct retro_variable var = {0};
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struct retro_system_av_info info;
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var.key = "genesis_plus_gx_bram";
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environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var);
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