+/* update scaler target size according to user settings */
+static void update_layer_size(int w, int h)
+{
+ float mult;
+ int imult;
+
+ switch (g_scaler) {
+ case SCALE_1_1:
+ g_layer_w = w; g_layer_h = h;
+ break;
+
+ case SCALE_2_2:
+ g_layer_w = w; g_layer_h = h;
+ if (w * 2 <= g_menuscreen_w)
+ g_layer_w = w * 2;
+ if (h * 2 <= g_menuscreen_h)
+ g_layer_h = h * 2;
+ break;
+
+ case SCALE_4_3v2:
+ if (h > g_menuscreen_h || (240 < h && h <= 360))
+ goto fractional_4_3;
+
+ // 4:3 that prefers integer scaling
+ imult = g_menuscreen_h / h;
+ g_layer_w = w * imult;
+ g_layer_h = h * imult;
+ mult = (float)g_layer_w / (float)g_layer_h;
+ if (mult < 1.25f || mult > 1.666f)
+ g_layer_w = 4.0f/3.0f * (float)g_layer_h;
+ printf(" -> %dx%d %.1f\n", g_layer_w, g_layer_h, mult);
+ break;
+
+ fractional_4_3:
+ case SCALE_4_3:
+ mult = 240.0f / (float)h * 4.0f / 3.0f;
+ if (h > 256)
+ mult *= 2.0f;
+ g_layer_w = mult * (float)g_menuscreen_h;
+ g_layer_h = g_menuscreen_h;
+ printf(" -> %dx%d %.1f\n", g_layer_w, g_layer_h, mult);
+ break;
+
+ case SCALE_FULLSCREEN:
+ g_layer_w = g_menuscreen_w;
+ g_layer_h = g_menuscreen_h;
+ break;
+
+ default:
+ break;
+ }
+
+ if (g_scaler != SCALE_CUSTOM) {
+ g_layer_x = g_menuscreen_w / 2 - g_layer_w / 2;
+ g_layer_y = g_menuscreen_h / 2 - g_layer_h / 2;
+ }
+ if (g_layer_w > g_menuscreen_w * 2) g_layer_w = g_menuscreen_w * 2;
+ if (g_layer_h > g_menuscreen_h * 2) g_layer_h = g_menuscreen_h * 2;
+}
+
+// XXX: this is platform specific really
+static inline int resolution_ok(int w, int h)
+{
+ return w <= 1024 && h <= 512;
+}
+
+static void pl_vout_set_mode(int w, int h, int raw_w, int raw_h, int bpp)
+{
+ int vout_w, vout_h, vout_bpp;
+ int buf_yoffset = 0;
+
+ // special h handling, Wipeout likes to change it by 1-6
+ static int vsync_cnt_ms_prev;
+ if ((unsigned int)(vsync_cnt - vsync_cnt_ms_prev) < 5*60)
+ h = (h + 7) & ~7;
+ vsync_cnt_ms_prev = vsync_cnt;
+
+ psx_w = raw_w;
+ psx_h = raw_h;
+ psx_bpp = bpp;
+ vout_w = w;
+ vout_h = h;
+ vout_bpp = bpp;
+ if (pl_rearmed_cbs.only_16bpp)
+ vout_bpp = 16;
+
+ assert(vout_h >= 192);
+
+ pl_vout_scale_w = pl_vout_scale_h = 1;
+#ifdef __ARM_NEON__
+ if (soft_filter) {
+ if (resolution_ok(w * 2, h * 2) && bpp == 16) {
+ pl_vout_scale_w = 2;
+ pl_vout_scale_h = 2;
+ }
+ else {
+ // filter unavailable
+ hud_msg[0] = 0;
+ }
+ }
+ else if (scanlines != 0 && scanline_level != 100 && bpp == 16) {
+ if (h <= 256)
+ pl_vout_scale_h = 2;
+ }
+#endif
+ vout_w *= pl_vout_scale_w;
+ vout_h *= pl_vout_scale_h;
+
+ update_layer_size(vout_w, vout_h);
+
+ pl_vout_buf = plat_gvideo_set_mode(&vout_w, &vout_h, &vout_bpp);
+ if (pl_vout_buf == NULL && pl_plat_blit == NULL)
+ fprintf(stderr, "failed to set mode %dx%d@%d\n",
+ vout_w, vout_h, vout_bpp);
+ else {
+ pl_vout_w = vout_w;
+ pl_vout_h = vout_h;
+ pl_vout_bpp = vout_bpp;
+ pl_vout_yoffset = buf_yoffset;
+ }
+ if (pl_vout_buf != NULL)
+ pl_vout_buf = (char *)pl_vout_buf
+ + pl_vout_yoffset * pl_vout_w * pl_vout_bpp / 8;