libretro: get rid of borders

diff --git a/platform/libretro.c b/platform/libretro.c
index f3252ab..f59cf67 100644 (file)
--- a/platform/libretro.c
+++ b/platform/libretro.c
@@ -39,7 +39,7 @@ static FILE *emu_log;
 #define VOUT_MAX_WIDTH 320
 #define VOUT_MAX_HEIGHT 240
 static void *vout_buf;
-static int vout_width, vout_height;
+static int vout_width, vout_height, vout_offset;
 
 static short __attribute__((aligned(4))) sndBuffer[2*44100/50];
 
@@ -251,6 +251,9 @@ void emu_video_mode_change(int start_line, int line_count, int is_32cols)
        memset(vout_buf, 0, 320 * 240 * 2);
        vout_width = is_32cols ? 256 : 320;
        PicoDrawSetOutBuf(vout_buf, vout_width * 2);
+
+       vout_height = line_count;
+       vout_offset = vout_width * start_line;
 }
 
 void emu_32x_startup(void)
@@ -335,10 +338,10 @@ void retro_get_system_av_info(struct retro_system_av_info *info)
        info->timing.fps            = Pico.m.pal ? 50 : 60;
        info->timing.sample_rate    = 44100;
        info->geometry.base_width   = 320;
-       info->geometry.base_height  = 240;
+       info->geometry.base_height  = vout_height;
        info->geometry.max_width    = VOUT_MAX_WIDTH;
        info->geometry.max_height   = VOUT_MAX_HEIGHT;
-       info->geometry.aspect_ratio = 4.0 / 3.0;
+       info->geometry.aspect_ratio = 0.0f;
 }
 
 /* savestates */
@@ -849,7 +852,8 @@ void retro_run(void)
 
        PicoFrame();
 
-       video_cb(vout_buf, vout_width, vout_height, vout_width * 2);
+       video_cb((short *)vout_buf + vout_offset,
+               vout_width, vout_height, vout_width * 2);
 }
 
 void retro_init(void)