libretro: only pass fb to video_cb when it's updated

[pcsx_rearmed.git] / frontend / libretro.c

diff --git a/frontend/libretro.c b/frontend/libretro.c
index 180c1d7..8256fe1 100644 (file)
--- a/frontend/libretro.c
+++ b/frontend/libretro.c
@@ -41,6 +41,39 @@ int in_a1[2] = { 127, 127 }, in_a2[2] = { 127, 127 };
 int in_keystate;
 int in_enable_vibration;
 
+static void init_memcard(char *mcd_data)
+{
+       unsigned off = 0;
+       unsigned i;
+
+       memset(mcd_data, 0, MCD_SIZE);
+
+       mcd_data[off++] = 'M';
+       mcd_data[off++] = 'C';
+       off += 0x7d;
+       mcd_data[off++] = 0x0e;
+
+       for (i = 0; i < 15; i++) {
+               mcd_data[off++] = 0xa0;
+               off += 0x07;
+               mcd_data[off++] = 0xff;
+               mcd_data[off++] = 0xff;
+               off += 0x75;
+               mcd_data[off++] = 0xa0;
+       }
+
+       for (i = 0; i < 20; i++) {
+               mcd_data[off++] = 0xff;
+               mcd_data[off++] = 0xff;
+               mcd_data[off++] = 0xff;
+               mcd_data[off++] = 0xff;
+               off += 0x04;
+               mcd_data[off++] = 0xff;
+               mcd_data[off++] = 0xff;
+               off += 0x76;
+       }
+}
+
 static int vout_open(void)
 {
        return 0;
@@ -64,6 +97,7 @@ static void convert(void *buf, size_t bytes)
 
 static unsigned game_width;
 static unsigned game_height;
+static unsigned game_fb_dirty;
 
 static void vout_flip(const void *vram, int stride, int bgr24, int w, int h)
 {
@@ -99,7 +133,8 @@ out:
 #endif
    game_width = w;
    game_height = h;
-       pl_rearmed_cbs.flip_cnt++;
+   game_fb_dirty = 1;
+   pl_rearmed_cbs.flip_cnt++;
 }
 
 static void vout_close(void)
@@ -357,7 +392,9 @@ void retro_run(void)
        psxCpu->Execute();
 
        samples_to_send += 44100 / 60;
-       video_cb(vout_buf, game_width, game_height, game_width * 2);
+
+       video_cb(game_fb_dirty ? vout_buf : NULL, game_width, game_height, game_width * 2);
+       game_fb_dirty = 0;
 }
 
 void retro_init(void)
@@ -402,6 +439,7 @@ void retro_init(void)
 
        McdDisable[0] = 0;
        McdDisable[1] = 1;
+       init_memcard(Mcd1Data);
 }
 
 void retro_deinit(void)