From: notaz <notasas@gmail.com>
Date: Fri, 21 Feb 2025 22:01:59 +0000 (+0200)
Subject: gpulib: add height adjustment option
X-Git-Tag: r25~15
X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=238696aebb3a1b2f864c41047e0c6ba8bb2db12c;p=pcsx_rearmed.git

gpulib: add height adjustment option

libretro/pcsx_rearmed#880
---

diff --git a/frontend/libretro.c b/frontend/libretro.c
index e0694208..9d1824af 100644
--- a/frontend/libretro.c
+++ b/frontend/libretro.c
@@ -2526,6 +2526,13 @@ static void update_variables(bool in_flight)
       pl_rearmed_cbs.screen_centering_y = atoi(var.value);
    }
 
+   var.value = NULL;
+   var.key = "pcsx_rearmed_screen_centering_h_adj";
+   if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
+   {
+      pl_rearmed_cbs.screen_centering_h_adj = atoi(var.value);
+   }
+
    var.value = NULL;
    var.key = "pcsx_rearmed_show_overscan";
    if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
diff --git a/frontend/libretro_core_options.h b/frontend/libretro_core_options.h
index 0d9379db..8c457582 100644
--- a/frontend/libretro_core_options.h
+++ b/frontend/libretro_core_options.h
@@ -521,6 +521,19 @@ struct retro_core_option_v2_definition option_defs_us[] = {
       },
       "0",
    },
+   {
+      "pcsx_rearmed_screen_centering_h_adj",
+      "(GPU) Manual height adjustment",
+      NULL,
+      "Height adjustment. Only effective when 'Screen centering' is set to 'Manual'.",
+      NULL,
+      "video",
+      {
+         V(-64), V(-48), V(-40), V(-32), V(-24), V(-16), V(-8), V(-7), V(-6), V(-5), V(-4), V(-3), V(-2), V(-1), V(0),
+         { NULL, NULL },
+      },
+      "0",
+   },
 #undef V
 #ifdef GPU_NEON
    {
diff --git a/frontend/menu.c b/frontend/menu.c
index ec803abe..ecd69183 100644
--- a/frontend/menu.c
+++ b/frontend/menu.c
@@ -467,6 +467,7 @@ static const struct {
 	CE_INTVAL_P(screen_centering_type),
 	CE_INTVAL_P(screen_centering_x),
 	CE_INTVAL_P(screen_centering_y),
+	CE_INTVAL_P(screen_centering_h_adj),
 	CE_INTVAL_P(show_overscan),
 	CE_INTVAL(spu_config.iUseReverb),
 	CE_INTVAL(spu_config.iXAPitch),
diff --git a/frontend/plugin_lib.h b/frontend/plugin_lib.h
index 31acae97..ef63cc21 100644
--- a/frontend/plugin_lib.h
+++ b/frontend/plugin_lib.h
@@ -112,6 +112,7 @@ struct rearmed_cbs {
 	int screen_centering_type_default;
 	int screen_centering_x;
 	int screen_centering_y;
+	int screen_centering_h_adj;
 	int show_overscan;
 };
 
diff --git a/plugins/gpulib/gpu.c b/plugins/gpulib/gpu.c
index 83ec7641..8c1b8e85 100644
--- a/plugins/gpulib/gpu.c
+++ b/plugins/gpulib/gpu.c
@@ -141,6 +141,7 @@ static noinline void update_height(struct psx_gpu *gpu)
       break;
     case C_MANUAL:
       y = gpu->state.screen_centering_y;
+      vres += gpu->state.screen_centering_h_adj;
       break;
     default:
       // correct if slightly miscentered
@@ -1026,10 +1027,12 @@ void GPUrearmedCallbacks(const struct rearmed_cbs *cbs)
   if (gpu.state.screen_centering_type != cbs->screen_centering_type
       || gpu.state.screen_centering_x != cbs->screen_centering_x
       || gpu.state.screen_centering_y != cbs->screen_centering_y
+      || gpu.state.screen_centering_h_adj != cbs->screen_centering_h_adj
       || gpu.state.show_overscan != cbs->show_overscan) {
     gpu.state.screen_centering_type = cbs->screen_centering_type;
     gpu.state.screen_centering_x = cbs->screen_centering_x;
     gpu.state.screen_centering_y = cbs->screen_centering_y;
+    gpu.state.screen_centering_h_adj = cbs->screen_centering_h_adj;
     gpu.state.show_overscan = cbs->show_overscan;
     update_width(&gpu);
     update_height(&gpu);
diff --git a/plugins/gpulib/gpu.h b/plugins/gpulib/gpu.h
index eb55922a..574100bb 100644
--- a/plugins/gpulib/gpu.h
+++ b/plugins/gpulib/gpu.h
@@ -94,8 +94,9 @@ struct psx_gpu {
     uint32_t w_out_old, h_out_old, status_vo_old;
     short screen_centering_type;
     short screen_centering_type_default;
-    int screen_centering_x;
-    int screen_centering_y;
+    short screen_centering_x;
+    short screen_centering_y;
+    int screen_centering_h_adj;
   } state;
   struct {
     int32_t set:3; /* -1 auto, 0 off, 1-3 fixed */