libretro: minor cleanups

[pcsx_rearmed.git] / frontend / libretro.c

diff --git a/frontend/libretro.c b/frontend/libretro.c
index 6212980..bdcf519 100644 (file)
--- a/frontend/libretro.c
+++ b/frontend/libretro.c
@@ -83,7 +83,7 @@ static void vout_set_mode(int w, int h, int raw_w, int raw_h, int bpp)
 {
 }
 
-#ifdef FRONTEND_SUPPORTS_RGB565
+#ifndef FRONTEND_SUPPORTS_RGB565
 static void convert(void *buf, size_t bytes)
 {
        unsigned int i, v, *p = buf;
@@ -97,6 +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)
 {
@@ -128,10 +129,11 @@ static void vout_flip(const void *vram, int stride, int bgr24, int w, int h)
 
 out:
 #ifndef FRONTEND_SUPPORTS_RGB565
-   convert(vout_buf, w * h * 2);
+       convert(vout_buf, w * h * 2);
 #endif
-   game_width = w;
-   game_height = h;
+       game_width = w;
+       game_height = h;
+       game_fb_dirty = 1;
        pl_rearmed_cbs.flip_cnt++;
 }
 
@@ -390,7 +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)