From 5c79cf9cd846b0a20e8ea439fc07b182fb763adc Mon Sep 17 00:00:00 2001
From: notaz <notasas@gmail.com>
Date: Sun, 2 Aug 2026 00:19:18 +0300
Subject: [PATCH] db: more hacks

libretro/pcsx_rearmed#930
---
 frontend/plugin.c       |  3 +++
 frontend/plugin_lib.h   | 14 ++++++++++----
 libpcsxcore/database.c  |  8 ++++++++
 libpcsxcore/psxcommon.h |  1 +
 plugins/gpulib/gpu.c    |  2 ++
 plugins/gpulib/gpu.h    |  2 +-
 6 files changed, 25 insertions(+), 5 deletions(-)

diff --git a/frontend/plugin.c b/frontend/plugin.c
index e7ae2097..0821a6f7 100644
--- a/frontend/plugin.c
+++ b/frontend/plugin.c
@@ -169,6 +169,9 @@ void plugin_call_rearmed_cbs(void)
 		Config.hacks.gpu_centering ? C_INGAME : C_AUTO;
 	pl_rearmed_cbs.alt_flip = Config.AlternativeFlip > 0 ||
 		(Config.AlternativeFlip < 0 && Config.hacks.alt_flip);
+	pl_rearmed_cbs.gpu_hacks = 0;
+	if (Config.hacks.needs_interlace)
+		pl_rearmed_cbs.gpu_hacks |= GPU_HACK_NEEDS_INTERLACE;
 
 	rearmed_set_cbs = SysLoadSym(hGPUDriver, "GPUrearmedCallbacks");
 	if (rearmed_set_cbs != NULL)
diff --git a/frontend/plugin_lib.h b/frontend/plugin_lib.h
index 4ff3ddf3..45d14828 100644
--- a/frontend/plugin_lib.h
+++ b/frontend/plugin_lib.h
@@ -77,12 +77,15 @@ struct rearmed_cbs {
 	unsigned int *gpu_hcnt;
 	unsigned int flip_cnt; // increment manually if not using pl_vout_flip
 	unsigned char only_16bpp; // platform is 16bpp-only
-	unsigned char dithering; // 0 off, 1 on, 2 force
+	unsigned char dithering;  // 0 off, 1 on, 2 force
 	unsigned char scale_hires;
 	unsigned char alt_flip;
-	int   thread_rendering; // -1 auto, 0 off, 1 on
+	unsigned char gpu_caps;   // gpu_plugin_caps
+	unsigned char gpu_hacks;  // gpu_plugin_hacks
+	unsigned char pad[2];
+	int   thread_rendering;   // -1 auto, 0 off, 1 on
 	struct {
-		int   allow_interlace; // 0 off, 1 on, 2 guess
+		int   allow_interlace; // 0 off, 1 on, 2 guess, 3 on_db
 		int   enhancement_enable;
 		int   enhancement_no_main;
 		int   enhancement_tex_adj;
@@ -106,7 +109,6 @@ struct rearmed_cbs {
 		int   iVRamSize, iTexGarbageCollection;
 	} gpu_peopsgl;
 	// misc
-	int gpu_caps;
 	int screen_centering_type;
 	int screen_centering_type_default;
 	int screen_centering_x;
@@ -124,6 +126,10 @@ enum gpu_plugin_caps {
 	GPU_CAP_SUPPORTS_2X = (1 << 1),
 };
 
+enum gpu_plugin_hacks {
+	GPU_HACK_NEEDS_INTERLACE = (1 << 0),
+};
+
 // platform hooks
 extern void (*pl_plat_clear)(void);
 extern void (*pl_plat_blit)(int doffs, const void *src,
diff --git a/libpcsxcore/database.c b/libpcsxcore/database.c
index 83d55fa7..60252735 100644
--- a/libpcsxcore/database.c
+++ b/libpcsxcore/database.c
@@ -114,6 +114,13 @@ static const char * const drc_no_thread_db[] =
 	"SLUS01414",
 };
 
+static const char * const needs_interlace_db[] =
+{
+	/* Worms Pinball */
+	"SLES00483",
+	/* Pro Pinball series games have a different hack... */
+};
+
 #define HACK_ENTRY(var, list) \
 	{ #var, &Config.hacks.var, list, ARRAY_SIZE(list) }
 
@@ -134,6 +141,7 @@ hack_db[] =
 	HACK_ENTRY(f1, f1_hack_db),
 	HACK_ENTRY(alt_flip, alt_flip_db),
 	HACK_ENTRY(drc_no_thread, drc_no_thread_db),
+	HACK_ENTRY(needs_interlace, needs_interlace_db),
 };
 
 static const struct
diff --git a/libpcsxcore/psxcommon.h b/libpcsxcore/psxcommon.h
index 96906707..b6b20aa5 100644
--- a/libpcsxcore/psxcommon.h
+++ b/libpcsxcore/psxcommon.h
@@ -148,6 +148,7 @@ typedef struct {
 		boolean f1;
 		boolean alt_flip;
 		boolean drc_no_thread;
+		boolean needs_interlace;
 	} hacks;
 } PcsxConfig;
 
diff --git a/plugins/gpulib/gpu.c b/plugins/gpulib/gpu.c
index b3470461..f04e3a55 100644
--- a/plugins/gpulib/gpu.c
+++ b/plugins/gpulib/gpu.c
@@ -1227,6 +1227,8 @@ void GPUrearmedCallbacks(const struct rearmed_cbs *cbs)
   gpu.state.hcnt = (uint32_t *)cbs->gpu_hcnt;
   gpu.state.frame_count = (uint32_t *)cbs->gpu_frame_count;
   gpu.state.allow_interlace = cbs->gpu_neon.allow_interlace;
+  if (gpu.state.allow_interlace > 1)
+    gpu.state.allow_interlace = (cbs->gpu_hacks & GPU_HACK_NEEDS_INTERLACE) ? 3 : 2;
   gpu.state.enhancement_enable = cbs->gpu_neon.enhancement_enable;
   gpu.state.enhancement_active = 0;
   gpu.state.downscale_enable = cbs->scale_hires;
diff --git a/plugins/gpulib/gpu.h b/plugins/gpulib/gpu.h
index 6073fbf0..e929fe60 100644
--- a/plugins/gpulib/gpu.h
+++ b/plugins/gpulib/gpu.h
@@ -84,7 +84,7 @@ struct psx_gpu {
     uint32_t fb_dirty_display_area:1;
     uint32_t draw_display_intersect:1;
     uint32_t old_interlace:1;
-    uint32_t allow_interlace:2;
+    uint32_t allow_interlace:2;         // 0 off, 1 on, 2 guess, 3 on_db
     uint32_t blanked:1;
     uint32_t use_alternative_flip:1;
     uint32_t enhancement_enable:1;