hook/other classic piu: Add gfx scaling feature

Support every game except for mk3 ports and pro series. Pro series
can do scaling etc by game configuration and mk3 has a different
gfx backend setup

src/main/hook/x2/main.c

@@ -141,6 +141,10 @@ static void x2hook_patch_gfx_init(struct x2hook_options *options)
   log_assert(options);
 
   patch_gfx_init();
+
+  if (options->patch.gfx.scaling_mode != PATCH_GFX_SCALE_MODE_INVALID) {
+    patch_gfx_scale(options->patch.gfx.scaling_mode);
+  }
 }
 
 static void x2hook_patch_game_init(struct x2hook_options *options)

src/main/hook/x2/options.c

@@ -4,6 +4,7 @@
 
 #define X2HOOK_OPTIONS_STR_GAME_FORCE_UNLOCK "game.force_unlock"
 #define X2HOOK_OPTIONS_STR_GAME_SETTINGS "game.settings"
+#define X2HOOK_OPTIONS_STR_PATCH_GFX_SCALING_MODE "gfx.scaling_mode"
 #define X2HOOK_OPTIONS_STR_PATCH_HOOK_MON_FILE "patch.hook_mon.file"
 #define X2HOOK_OPTIONS_STR_PATCH_HOOK_MON_FS "patch.hook_mon.fs"
 #define X2HOOK_OPTIONS_STR_PATCH_HOOK_MON_IO "patch.hook_mon.io"
@@ -38,6 +39,13 @@ static const struct util_options_def x2hook_options_def[] = {
         .type = UTIL_OPTIONS_TYPE_STR,
         .default_value.str = "./save",
     },
+    {
+        .name = X2HOOK_OPTIONS_STR_PATCH_GFX_SCALING_MODE,
+        .description = "Set a scaling mode for the rendered output. Available modes: 0 = disabled, 1 = SD 480 to pillarbox HD 720, 2 = SD 480 to pillarbox HD 1080, 3 = SD 480 to SD 960, 4 = HD 720 to HD 1080",
+        .param = 'z',
+        .type = UTIL_OPTIONS_TYPE_INT,
+        .default_value.i = 0,
+    },
     {
         .name = X2HOOK_OPTIONS_STR_PATCH_HOOK_MON_FILE,
         .description = "Enable file call monitoring",
@@ -159,6 +167,8 @@ bool x2hook_options_init(int argc, char **argv, struct x2hook_options *options)
 
   options->game.force_unlock =
       util_options_get_bool(options_opt, X2HOOK_OPTIONS_STR_GAME_FORCE_UNLOCK);
+  options->patch.gfx.scaling_mode = util_options_get_int(
+      options_opt, X2HOOK_OPTIONS_STR_PATCH_GFX_SCALING_MODE);
   options->game.settings =
       util_options_get_str(options_opt, X2HOOK_OPTIONS_STR_GAME_SETTINGS);
   options->patch.hook_mon.file = util_options_get_bool(

src/main/hook/x2/options.h

@@ -13,6 +13,10 @@ struct x2hook_options {
   } game;
 
   struct patch {
+    struct gfx {
+      uint8_t scaling_mode;
+    } gfx;
+
     struct hook_mon {
       bool file;
       bool fs;