Add RGB565 support

[pcsx_rearmed.git] / frontend / libretro.c

diff --git a/frontend/libretro.c b/frontend/libretro.c
index a0b9f46..ad209b3 100644 (file)
--- a/frontend/libretro.c
+++ b/frontend/libretro.c
@@ -29,6 +29,7 @@ static void *vout_buf;
 static int vout_width, vout_height;
 static int samples_sent, samples_to_send;
 static int plugins_opened;
+static int native_rgb565;
 
 /* PCSX ReARMed core calls and stuff */
 int in_type1, in_type2;
@@ -49,11 +50,11 @@ static void *vout_set_mode(int w, int h, int bpp)
 }
 
 /* FIXME: either teach PCSX to blit to RGB1555 or RetroArch to support RGB565 */
-static void convert(void *buf, size_t size)
+static void convert(void *buf, size_t bytes)
 {
        unsigned int i, v, *p = buf;
 
-       for (i = 0; i < size / 2; i++) {
+       for (i = 0; i < bytes / 4; i++) {
                v = p[i];
                p[i] = (v & 0x001f001f) | ((v >> 1) & 0x7fe07fe0);
        }
@@ -62,7 +63,8 @@ static void convert(void *buf, size_t size)
 static void *vout_flip(void)
 {
        pl_rearmed_cbs.flip_cnt++;
-       convert(vout_buf,  vout_width * vout_height * 2);
+       if (!native_rgb565)
+               convert(vout_buf,  vout_width * vout_height * 2);
        video_cb(vout_buf, vout_width, vout_height, vout_width * 2);
 
        return vout_buf;
@@ -197,6 +199,12 @@ void retro_cheat_set(unsigned index, bool enabled, const char *code)
 
 bool retro_load_game(const struct retro_game_info *info)
 {
+       enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
+       if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt)) {
+               native_rgb565 = 1;
+               fprintf(stderr, "RGB565 supported, using it\n");
+       }
+
        if (plugins_opened) {
                ClosePlugins();
                plugins_opened = 0;