diff --git a/modules/CMakeLists.txt b/modules/CMakeLists.txt
index 721edce..f249492 100644
--- a/modules/CMakeLists.txt
+++ b/modules/CMakeLists.txt
@@ -79,7 +79,6 @@ add_library(modules STATIC
   lib/graph_draw_amap.c
   lib/graph_stretch.c
   lib/graph_cg.c
-  lib/graph_buller.c
   lib/gre_blend_useamap.c
   lib/gre_blend.c
   lib/gre_blend_screen.c
diff --git a/modules/Gpx/effectcopy.c b/modules/Gpx/effectcopy.c
index cab1061..200c376 100644
--- a/modules/Gpx/effectcopy.c
+++ b/modules/Gpx/effectcopy.c
@@ -5,43 +5,12 @@
 #include "portab.h"
 #include "system.h"
 #include "surface.h"
-// #include "gleffectcopy.h"
 #include "sdl_core.h"
 #include "ags.h"
 #include "input.h"
 #include "graph.h"
 #include "ngraph.h"
 
-/* saved parameter */
-struct ecopyparam {
-	surface_t *src;
-	int sx;
-	int sy;
-	surface_t *dst;
-	int dx;
-	int dy;
-	int w;
-	int h;
-	surface_t *write;
-	int wx;
-	int wy;
-	int time;
-	boolean cancel;
-	int spCol;
-	int extp[10];
-	
-	// for ec11
-	surface_t *ss[8];
-	surface_t *sd[8];
-};
-typedef struct ecopyparam ecopyparam_t;
-static ecopyparam_t ecp;
-
-
-
-static void ec11_cb(int step);
-static void ec11_prepare(void);
-
 void gpx_effect(int no,
 		int wx, int wy,
 		surface_t *dst, int dx, int dy,
@@ -55,118 +24,28 @@ void gpx_effect(int no,
 
 	*endtype = 0;
 
-	enum sdl_effect_type sdl_effect = from_sact_effect(no);
-	if (sdl_effect != EFFECT_INVALID) {
-		SDL_Rect rect = { wx, wy, width, height };
-		struct sdl_effect *eff = sdl_effect_init(&rect, dst, dx, dy, src, sx, sy, sdl_effect);
-		if (!time)
-			time = (no == SACT_EFFECT_CROSSFADE_DOWN || SACT_EFFECT_CROSSFADE_UP) ? 1150 : 2700;
-		ags_fade2(time, FALSE, (ags_fade2_callback)sdl_effect_step, eff);
-		sdl_effect_finish(eff);
-
-		switch (no) {
-		case SACT_EFFECT_FADEOUT:
-			gr_fill(write, wx, wy, width, height, 0, 0, 0);
-			break;
-		case SACT_EFFECT_WHITEOUT:
-			gr_fill(write, wx, wy, width, height, 255, 255, 255);
-			break;
-		default:
-			gr_copy(write, wx, wy, src, sx, sy, width, height);
-			break;
-		}
-		ags_updateArea(wx, wy, width, height);
-		return;
+	enum sdl_effect_type type = from_sact_effect(no);
+	if (type == EFFECT_INVALID) {
+		WARNING("Unimplemented effect %d\n", no);
+		type = EFFECT_CROSSFADE;
 	}
+	SDL_Rect rect = { wx, wy, width, height };
+	struct sdl_effect *eff = sdl_effect_init(&rect, dst, dx, dy, src, sx, sy, type);
+	if (!time)
+		time = (no == SACT_EFFECT_CROSSFADE_DOWN || SACT_EFFECT_CROSSFADE_UP) ? 1150 : 2700;
+	ags_fade2(time, FALSE, (ags_fade2_callback)sdl_effect_step, eff);
+	sdl_effect_finish(eff);
 
-	ecp.write = write;
-	ecp.wx  = wx;
-	ecp.wy  = wy;
-	ecp.dst = dst;
-	ecp.dx  = dx;
-	ecp.dy  = dy;	
-	ecp.src = src;
-	ecp.sx  = sx;
-	ecp.sy  = sy;
-	ecp.w = width;
-	ecp.h = height;
-	ecp.time = time;
-
-	ags_faderinfo_t i;
-
-	switch(no) {
-	case 11:
-		ec11_prepare();
-		i.step_max = 6;
-		i.effect_time = time == 0 ? 2700 : time;
-		i.cancel = FALSE;
-		i.callback = ec11_cb;
-		ags_fader(&i);
+	switch (no) {
+	case SACT_EFFECT_FADEOUT:
+		gr_fill(write, wx, wy, width, height, 0, 0, 0);
+		break;
+	case SACT_EFFECT_WHITEOUT:
+		gr_fill(write, wx, wy, width, height, 255, 255, 255);
 		break;
 	default:
 		gr_copy(write, wx, wy, src, sx, sy, width, height);
-		ags_updateArea(wx, wy, width, height);
+		break;
 	}
+	ags_updateArea(wx, wy, width, height);
 }
-
-
-static void ec11_prepare() {
-	int i;
-	
-	ecp.ss[0] = sf_create_surface(ecp.w, ecp.h, ecp.write->depth);
-	ecp.sd[0] = sf_create_surface(ecp.w, ecp.h, ecp.write->depth);
-	gr_buller(ecp.ss[0], 0, 0, ecp.src, ecp.sx, ecp.sy, ecp.w, ecp.h, 1 << 2);
-	gr_buller(ecp.sd[0], 0, 0, ecp.dst, ecp.dx, ecp.dy, ecp.w, ecp.h, 1 << 2);
-	
-	for (i = 1; i < 6; i++) {
-		ecp.ss[i] = sf_create_surface(ecp.w, ecp.h, ecp.write->depth);
-		ecp.sd[i] = sf_create_surface(ecp.w, ecp.h, ecp.write->depth);
-		gr_buller(ecp.ss[i], 0, 0, ecp.ss[i-1], 0, 0, ecp.w, ecp.h, 1 << (i+2));
-		gr_buller(ecp.sd[i], 0, 0, ecp.sd[i-1], 0, 0, ecp.w, ecp.h, 1 << (i+2));
-	}
-}
-
-static void ec11_cb(int step) {
-	int i;
-	
-	if (step == 6) {
-		for (i = 0; i < 6; i++) {
-			sf_free(ecp.ss[i]);
-			sf_free(ecp.sd[i]);
-		}
-		gr_copy(ecp.write, ecp.wx, ecp.wy, ecp.src, ecp.sx, ecp.sy, ecp.w, ecp.h);
-		ags_updateArea(ecp.wx, ecp.wy, ecp.w, ecp.h);
-		return;
-	}
-	
-	gre_Blend(ecp.write, ecp.wx, ecp.wy, ecp.sd[step], 0, 0, ecp.ss[5-step], 0, 0, ecp.w, ecp.h, ((step+1)*256)/7);
-	
-	ags_updateArea(ecp.wx, ecp.wy, ecp.w, ecp.h);
-}
-
-#if 0
-static void ec11_cb(int step) {
-	static surface_t *ss;
-	static surface_t *sd;
-	
-	if (step == 0) {
-		ss = sf_create_surface(ecp.w, ecp.h, ecp.write->depth);
-		sd = sf_create_surface(ecp.w, ecp.h, ecp.write->depth);
-		gr_copy(ss, 0, 0, ecp.src, ecp.sx, ecp.sy, ecp.w, ecp.h);
-		gr_copy(sd, 0, 0, ecp.dst, ecp.dx, ecp.dy, ecp.w, ecp.h);
-		return;
-	}
-	if (step == 6) {
-		sf_free(ss);
-		sf_free(sd);
-		gr_copy(ecp.write, ecp.wx, ecp.wy, ecp.src, ecp.sx, ecp.sy, ecp.w, ecp.h);
-		ags_updateArea(ecp.wx, ecp.wy, ecp.w, ecp.h);
-		return;
-	}
-	
-	gr_buller(ss, 0, 0, ecp.src, ecp.sx, ecp.sy, ecp.w, ecp.h, 1 << (7-step));
-	gr_buller(sd, 0, 0, ecp.dst, ecp.dx, ecp.dy, ecp.w, ecp.h, 1 << (step+1));
-	gre_Blend(ecp.write, ecp.wx, ecp.wy, sd, 0, 0, ss, 0, 0, ecp.w, ecp.h, (step*256)/6);
-	ags_updateArea(ecp.wx, ecp.wy, ecp.w, ecp.h);
-}
-#endif
diff --git a/modules/NIGHTDLL/sprite_eupdate.c b/modules/NIGHTDLL/sprite_eupdate.c
index cf750ed..1d64234 100644
--- a/modules/NIGHTDLL/sprite_eupdate.c
+++ b/modules/NIGHTDLL/sprite_eupdate.c
@@ -38,106 +38,40 @@
 #include "sactcg.h"
 #include "sdl_core.h"
 
-
-static void ec6_cb(surface_t *, surface_t *);
-static void ec11_cb(surface_t *, surface_t *);
-static void ec_dummy_cb(surface_t *, surface_t *);
-
-struct ecopyparam {
-	int sttime;
-	int curtime;
-	int edtime;
-	int curstep;
-	int oldstep;
-};
-typedef struct ecopyparam ecopyparam_t;
-static ecopyparam_t ecp;
-
-// #include "sprite_eupdate_perspect.c"
-// #include "sprite_eupdate_mosaic.c"
-// #include "sprite_eupdate_uneune.c"
-#include "sprite_eupdate_buller.c"
-// #include "sprite_eupdate_zmbbul.c"
-
-typedef void entrypoint (surface_t *, surface_t *);
-
-static void ec_dummy_cb(surface_t *sfsrc, surface_t *sfdst) {
-	WARNING("NOT IMPLEMENTED\n");
-}
-
 /*
   効果つき画面更新
-  @param type: 効果の種類
+  @param no: 効果の種類
   @param time: 実行時間(msec)
   @param cancel: キー抜け(0:なし, 1:あり)
 */
-int nt_sp_eupdate(int type, int time, int cancel) {
-	surface_t *sfsrc, *sfdst;
-	int key;
-	entrypoint *cb;
+int nt_sp_eupdate(int no, int time, int cancel) {
+	if (no == 1013) {
+		nt_sp_update_all(TRUE);
+		return OK;
+	}
 
-	// 現在の sf0 をセーブ
-	sfsrc = sf_dup(sf0);
-	
 	nt_sp_update_all(FALSE);
 	
-	sfdst = sf_dup(sf0);
-	
-	enum sdl_effect_type sdl_effect = from_sact_effect(type - 100);
-	struct sdl_effect *eff = NULL;
-	if (sdl_effect != EFFECT_INVALID) {
-		SDL_Rect rect = { 0, 0, sfsrc->width, sfsrc->height };
-		eff = sdl_effect_init(&rect, NULL, 0, 0, sdl_getDIB(), 0, 0, sdl_effect);
-	} else {
-		sf_copyall(sf0, sfsrc); // 全部の効果タイプにこの処理は要らないんだけど
+	enum sdl_effect_type type = from_sact_effect(no - 100);
+	if (type == EFFECT_INVALID) {
+		WARNING("Unimplemented effect %d\n", no);
+		type = EFFECT_CROSSFADE;
 	}
+	SDL_Rect rect = { 0, 0, sf0->width, sf0->height };
+	struct sdl_effect *eff = sdl_effect_init(&rect, NULL, 0, 0, sdl_getDIB(), 0, 0, type);
 
-	ecp.sttime = ecp.curtime = sdl_getTicks();
-	ecp.edtime = ecp.curtime + time;
-	ecp.oldstep = 0;
-	
-	switch(type) {
-	case 10:
-		cb = ec_dummy_cb;
-		break;
-	case 111: // 線形ぼかし
-		ec11_prepare(sfsrc, sfdst);
-		cb = ec11_cb;
-		break;
-	case 1011:
-		cb = ec_dummy_cb;
-		break;
-	case 1013:
-		nt_sp_update_all(TRUE); return OK;
-		// cb = ec_dummy_cb;
-		break;
-	default:
-		cb = ec_dummy_cb;
-		break;
+	int sttime, curtime;
+	sttime = curtime = sdl_getTicks();
+	int edtime = curtime + time;
+
+	while ((curtime = sdl_getTicks()) < edtime) {
+		sdl_effect_step(eff, (double)(curtime - sttime) / (edtime - sttime));
+		int rest = 16 - (sdl_getTicks() - curtime);
+		int key = sys_keywait(rest, cancel ? KEYWAIT_CANCELABLE : KEYWAIT_NONCANCELABLE);
+		if (cancel && key)
+			break;
 	}
-	
-	while ((ecp.curtime = sdl_getTicks()) < ecp.edtime) {
-		if (eff) {
-			sdl_effect_step(eff, (double)(ecp.curtime - ecp.sttime) / (ecp.edtime - ecp.sttime));
-		} else {
-			cb(sfsrc, sfdst);
-		}
-		int rest = 15 - (sdl_getTicks() - ecp.curtime);
-		key = sys_keywait(rest, cancel ? KEYWAIT_CANCELABLE : KEYWAIT_NONCANCELABLE);
-		
-		if (cancel && key) break;
-	}
-	
-	sf_copyall(sf0, sfdst);
+	sdl_effect_finish(eff);
 	ags_updateFull();
-	sf_free(sfsrc);
-	sf_free(sfdst);
-
-	if (type == 111) {
-		ec11_drain(sfsrc, sfdst);
-	}
-	if (eff)
-		sdl_effect_finish(eff);
-	
 	return OK;
 }
diff --git a/modules/NIGHTDLL/sprite_eupdate_buller.c b/modules/NIGHTDLL/sprite_eupdate_buller.c
deleted file mode 100644
index 12bb7ed..0000000
--- a/modules/NIGHTDLL/sprite_eupdate_buller.c
+++ /dev/null
@@ -1,66 +0,0 @@
-// 11 と 19 で共有
-static surface_t *ec11_ss[6];
-static surface_t *ec11_sd[6];
-
-// 線形ブラー
-static void ec11_cb(surface_t *sfsrc, surface_t *sfdst) {
-	int curstep, maxstep = 6; 
-	curstep = maxstep * (ecp.curtime - ecp.sttime)/ (ecp.edtime - ecp.sttime);
-	if (curstep < 6) {
-		gre_Blend(sf0, 0, 0, ec11_ss[curstep], 0, 0, ec11_sd[5-curstep], 0, 0, sfsrc->width, sfsrc->height, (curstep+1)*256/7);
-		ags_updateFull();
-	}
-}
-
-static void ec11_prepare(surface_t *src, surface_t *dst) {
-	int i;
-	
-	ec11_ss[0] = sf_create_surface(src->width, src->height, src->depth);
-	ec11_sd[0] = sf_create_surface(src->width, src->height, src->depth);
-	gr_buller(ec11_ss[0], 0, 0, src, 0, 0, src->width, src->height, 1 << 2);
-	gr_buller(ec11_sd[0], 0, 0, dst, 0, 0, dst->width, dst->height, 1 << 2);
-	for (i = 1; i < 6; i++) {
-		ec11_ss[i] = sf_create_surface(src->width, src->height, src->depth);
-		ec11_sd[i] = sf_create_surface(dst->width, dst->height, dst->depth);
-		gr_buller(ec11_ss[i], 0, 0, ec11_ss[i-1], 0, 0, src->width, src->height, 1 << (i+2));
-		gr_buller(ec11_sd[i], 0, 0, ec11_sd[i-1], 0, 0, dst->width, dst->height, 1 << (i+2));
-	}
-}
-
-static void ec11_drain(surface_t *src, surface_t *dst) {
-	int i;
-	
-	for (i = 0; i < 6; i++) {
-		sf_free(ec11_ss[i]);
-		sf_free(ec11_sd[i]);
-	}
-}
-
-// 縦線形ブラー
-static void ec19_cb(surface_t *sfsrc, surface_t *sfdst) {
-	ec11_cb(sfsrc, sfdst);
-}
-
-static void ec19_prepare(surface_t *src, surface_t *dst) {
-	int i;
-	
-	ec11_ss[0] = sf_create_surface(src->width, src->height, src->depth);
-	ec11_sd[0] = sf_create_surface(src->width, src->height, src->depth);
-	gr_buller_v(ec11_ss[0], 0, 0, src, 0, 0, src->width, src->height, 1 << 2);
-	gr_buller_v(ec11_sd[0], 0, 0, dst, 0, 0, dst->width, dst->height, 1 << 2);
-	for (i = 1; i < 6; i++) {
-		ec11_ss[i] = sf_create_surface(src->width, src->height, src->depth);
-		ec11_sd[i] = sf_create_surface(dst->width, dst->height, dst->depth);
-		gr_buller_v(ec11_ss[i], 0, 0, ec11_ss[i-1], 0, 0, src->width, src->height, 1 << (i+2));
-		gr_buller_v(ec11_sd[i], 0, 0, ec11_sd[i-1], 0, 0, dst->width, dst->height, 1 << (i+2));
-	}
-}
-
-static void ec19_drain(surface_t *src, surface_t *dst) {
-	int i;
-	
-	for (i = 0; i < 6; i++) {
-		sf_free(ec11_ss[i]);
-		sf_free(ec11_sd[i]);
-	}
-}
diff --git a/modules/SACT/sprite_eupdate.c b/modules/SACT/sprite_eupdate.c
index ff61361..15f06b9 100644
--- a/modules/SACT/sprite_eupdate.c
+++ b/modules/SACT/sprite_eupdate.c
@@ -41,7 +41,6 @@
 
 
 static void ec6_cb(surface_t *, surface_t *);
-static void ec11_cb(surface_t *, surface_t *);
 static void sdl_effect_cb(surface_t *, surface_t *);
 static void ec_dummy_cb(surface_t *, surface_t *);
 
@@ -59,7 +58,6 @@ static ecopyparam_t ecp;
 #include "sprite_eupdate_perspect.c"
 #include "sprite_eupdate_mosaic.c"
 #include "sprite_eupdate_uneune.c"
-#include "sprite_eupdate_buller.c"
 #include "sprite_eupdate_zmbbul.c"
 
 typedef void entrypoint (surface_t *, surface_t *);
@@ -75,7 +73,7 @@ static entrypoint *cb[39] = {
 	sdl_effect_cb,
 	sdl_effect_cb,
 	ec10_cb,
-	ec11_cb,
+	sdl_effect_cb,
 	sdl_effect_cb,
 	sdl_effect_cb,
 	sdl_effect_cb,
@@ -83,7 +81,7 @@ static entrypoint *cb[39] = {
 	sdl_effect_cb,
 	sdl_effect_cb,
 	ec_dummy_cb,  // 欠番
-	ec19_cb,
+	sdl_effect_cb,
 	sdl_effect_cb,
 	sdl_effect_cb,
 	sdl_effect_cb,
@@ -192,12 +190,6 @@ int sp_eupdate(int type, int time, int cancel) {
 	if (type == 10) {
 		ec10_prepare(sfsrc, sfdst);
 	}
-	if (type == 11) {
-		ec11_prepare(sfsrc, sfdst);
-	}
-	if (type == 19) {
-		ec19_prepare(sfsrc, sfdst);
-	}
 	
 	ecp.sttime = ecp.curtime = sdl_getTicks();
 	ecp.edtime = ecp.curtime + time*10;
@@ -221,12 +213,6 @@ int sp_eupdate(int type, int time, int cancel) {
 	if (type == 10) {
 		ec10_drain(sfsrc, sfdst);
 	}
-	if (type == 11) {
-		ec11_drain(sfsrc, sfdst);
-	}
-	if (type == 19) {
-		ec19_drain(sfsrc, sfdst);
-	}
 	if (ecp.eff) {
 		sdl_effect_finish(ecp.eff);
 		ecp.eff = NULL;
diff --git a/modules/SACT/sprite_eupdate_buller.c b/modules/SACT/sprite_eupdate_buller.c
deleted file mode 100644
index 12bb7ed..0000000
--- a/modules/SACT/sprite_eupdate_buller.c
+++ /dev/null
@@ -1,66 +0,0 @@
-// 11 と 19 で共有
-static surface_t *ec11_ss[6];
-static surface_t *ec11_sd[6];
-
-// 線形ブラー
-static void ec11_cb(surface_t *sfsrc, surface_t *sfdst) {
-	int curstep, maxstep = 6; 
-	curstep = maxstep * (ecp.curtime - ecp.sttime)/ (ecp.edtime - ecp.sttime);
-	if (curstep < 6) {
-		gre_Blend(sf0, 0, 0, ec11_ss[curstep], 0, 0, ec11_sd[5-curstep], 0, 0, sfsrc->width, sfsrc->height, (curstep+1)*256/7);
-		ags_updateFull();
-	}
-}
-
-static void ec11_prepare(surface_t *src, surface_t *dst) {
-	int i;
-	
-	ec11_ss[0] = sf_create_surface(src->width, src->height, src->depth);
-	ec11_sd[0] = sf_create_surface(src->width, src->height, src->depth);
-	gr_buller(ec11_ss[0], 0, 0, src, 0, 0, src->width, src->height, 1 << 2);
-	gr_buller(ec11_sd[0], 0, 0, dst, 0, 0, dst->width, dst->height, 1 << 2);
-	for (i = 1; i < 6; i++) {
-		ec11_ss[i] = sf_create_surface(src->width, src->height, src->depth);
-		ec11_sd[i] = sf_create_surface(dst->width, dst->height, dst->depth);
-		gr_buller(ec11_ss[i], 0, 0, ec11_ss[i-1], 0, 0, src->width, src->height, 1 << (i+2));
-		gr_buller(ec11_sd[i], 0, 0, ec11_sd[i-1], 0, 0, dst->width, dst->height, 1 << (i+2));
-	}
-}
-
-static void ec11_drain(surface_t *src, surface_t *dst) {
-	int i;
-	
-	for (i = 0; i < 6; i++) {
-		sf_free(ec11_ss[i]);
-		sf_free(ec11_sd[i]);
-	}
-}
-
-// 縦線形ブラー
-static void ec19_cb(surface_t *sfsrc, surface_t *sfdst) {
-	ec11_cb(sfsrc, sfdst);
-}
-
-static void ec19_prepare(surface_t *src, surface_t *dst) {
-	int i;
-	
-	ec11_ss[0] = sf_create_surface(src->width, src->height, src->depth);
-	ec11_sd[0] = sf_create_surface(src->width, src->height, src->depth);
-	gr_buller_v(ec11_ss[0], 0, 0, src, 0, 0, src->width, src->height, 1 << 2);
-	gr_buller_v(ec11_sd[0], 0, 0, dst, 0, 0, dst->width, dst->height, 1 << 2);
-	for (i = 1; i < 6; i++) {
-		ec11_ss[i] = sf_create_surface(src->width, src->height, src->depth);
-		ec11_sd[i] = sf_create_surface(dst->width, dst->height, dst->depth);
-		gr_buller_v(ec11_ss[i], 0, 0, ec11_ss[i-1], 0, 0, src->width, src->height, 1 << (i+2));
-		gr_buller_v(ec11_sd[i], 0, 0, ec11_sd[i-1], 0, 0, dst->width, dst->height, 1 << (i+2));
-	}
-}
-
-static void ec19_drain(surface_t *src, surface_t *dst) {
-	int i;
-	
-	for (i = 0; i < 6; i++) {
-		sf_free(ec11_ss[i]);
-		sf_free(ec11_sd[i]);
-	}
-}
diff --git a/modules/lib/graph_buller.c b/modules/lib/graph_buller.c
deleted file mode 100644
index 0d65223..0000000
--- a/modules/lib/graph_buller.c
+++ /dev/null
@@ -1,171 +0,0 @@
-#include <stdio.h>
-#include <string.h>
-
-#include "portab.h"
-#include "surface.h"
-#include "ngraph.h"
-#include "ags.h"
-
-int gr_buller(surface_t *dst, int dx, int dy, surface_t *src, int sx, int sy, int width, int height, int step) {
-	BYTE *dp, *sp;
-	int x, y;
-	int r1, g1, b1;
-	int r2, g2, b2;
-	int r3, g3, b3;
-	
-	if (src == NULL || dst == NULL) return NG;
-	if (!gr_clip(src, &sx, &sy, &width, &height, dst, &dx, &dy)) return NG;
-	
-	sp = GETOFFSET_PIXEL(src, sx, sy);
-	dp = GETOFFSET_PIXEL(dst, dx, dy);
-	switch(dst->depth) {
-	case 16:
-	{
-		WORD *yld, *yls;
-		
-		for (y = 0; y < height; y++) {
-			yls  = (WORD *)(sp + y * src->bytes_per_line);
-			yld  = (WORD *)(dp + y * dst->bytes_per_line);
-			for (x = 0; x < step; x++) {
-				*yld = *(yls+step);
-				yls++; yld++;
-			}
-			
-			for (; x < (width - step*2); x++) {
-				r1 = PIXR16((*(yls+step)));
-				g1 = PIXG16((*(yls+step)));
-				b1 = PIXB16((*(yls+step)));
-				r2 = PIXR16((*(yls-step)));
-				g2 = PIXG16((*(yls-step)));
-				b2 = PIXB16((*(yls-step)));
-				r3 = min(255, (r1+r2) >> 1);
-				g3 = min(255, (g1+g2) >> 1);
-				b3 = min(255, (b1+b2) >> 1);
-				
-				*yld = PIX16(r3, g3, b3);
-				yld++; yls++;
-			}
-			for (; x < width; x++) {
-				*yld = *(yls-step);
-				yls++; yld++;
-			}				
-		}
-		break;
-	}
-	case 24:
-	case 32:
-	{
-		DWORD *yld, *yls;
-		
-		for (y = 0; y < height; y++) {
-			yls  = (DWORD *)(sp + y * src->bytes_per_line);
-			yld  = (DWORD *)(dp + y * dst->bytes_per_line);
-			for (x = 0; x < step; x++) {
-				*yld = *(yls+step);
-				yls++; yld++;
-			}
-			
-			for (; x < (width - step*2); x++) {
-				r1 = PIXR24((*(yls+step)));
-				g1 = PIXG24((*(yls+step)));
-				b1 = PIXB24((*(yls+step)));
-				r2 = PIXR24((*(yls-step)));
-				g2 = PIXG24((*(yls-step)));
-				b2 = PIXB24((*(yls-step)));
-				r3 = min(255, (r1+r2) >> 1);
-				g3 = min(255, (g1+g2) >> 1);
-				b3 = min(255, (b1+b2) >> 1);
-				
-				*yld = PIX24(r3, g3, b3);
-				yld++; yls++;
-			}
-			for (; x < width; x++) {
-				*yld = *(yls-step);
-				yls++; yld++;
-			}				
-		}
-		break;
-	}}
-	
-	return OK;
-}
-
-// 縦方向ブラー
-int gr_buller_v(surface_t *dst, int dx, int dy, surface_t *src, int sx, int sy, int width, int height, int step) {
-	BYTE *dp, *sp;
-	int x, y;
-	int r1, g1, b1;
-	int r2, g2, b2;
-	int r3, g3, b3;
-	
-	if (src == NULL || dst == NULL) return NG;
-	if (!gr_clip(src, &sx, &sy, &width, &height, dst, &dx, &dy)) return NG;
-	
-	sp = GETOFFSET_PIXEL(src, sx, sy);
-	dp = GETOFFSET_PIXEL(dst, dx, dy);
-	switch(dst->depth) {
-	case 16:
-	{
-		WORD *yld, *yls;
-		
-		for (x = 0; x < width; x++) {
-			yls  = (WORD *)(sp + x * src->bytes_per_pixel);
-			yld  = (WORD *)(dp + x * dst->bytes_per_pixel);
-			for (y = 0; y < step; y++) {
-				*(yld+y*dst->width) = *(yls+(y+step)*src->width);
-			}
-			
-			for (; y < (height - step*2); y++) {
-				r1 = PIXR16((*(yls+(y+step)*src->width)));
-				g1 = PIXG16((*(yls+(y+step)*src->width)));
-				b1 = PIXB16((*(yls+(y+step)*src->width)));
-				r2 = PIXR16((*(yls+(y-step)*src->width)));
-				g2 = PIXG16((*(yls+(y-step)*src->width)));
-				b2 = PIXB16((*(yls+(y-step)*src->width)));
-				r3 = min(255, (r1+r2) >> 1);
-				g3 = min(255, (g1+g2) >> 1);
-				b3 = min(255, (b1+b2) >> 1);
-				
-				*(yld+y*dst->width) = PIX16(r3, g3, b3);
-			}
-			for (; y < height; y++) {
-				*(yld+y*dst->width) = *(yls+(y-step)*src->width);
-			}				
-		}
-		break;
-	}
-	case 24:
-	case 32:
-	{
-		DWORD *yld, *yls;
-		
-		for (x = 0; x < width; x++) {
-			yls  = (DWORD *)(sp + x * src->bytes_per_pixel);
-			yld  = (DWORD *)(dp + x * dst->bytes_per_pixel);
-			for (y = 0; y < step; y++) {
-				*(yld+y*dst->width) = *(yls+(y+step)*src->width);
-			}
-			
-			for (; y < (height - step*2); y++) {
-				r1 = PIXR24((*(yls+(y+step)*src->width)));
-				g1 = PIXG24((*(yls+(y+step)*src->width)));
-				b1 = PIXB24((*(yls+(y+step)*src->width)));
-				r2 = PIXR24((*(yls+(y-step)*src->width)));
-				g2 = PIXG24((*(yls+(y-step)*src->width)));
-				b2 = PIXB24((*(yls+(y-step)*src->width)));
-				r3 = min(255, (r1+r2) >> 1);
-				g3 = min(255, (g1+g2) >> 1);
-				b3 = min(255, (b1+b2) >> 1);
-				
-				*(yld+y*dst->width) = PIX24(r3, g3, b3);
-			}
-			for (; y < height; y++) {
-				*(yld+y*dst->width) = *(yls+(y-step)*src->width);
-			}				
-		}
-		break;
-	}}
-	
-	return OK;
-}
-
diff --git a/modules/lib/ngraph.h b/modules/lib/ngraph.h
index a96677b..cfe0ab6 100644
--- a/modules/lib/ngraph.h
+++ b/modules/lib/ngraph.h
@@ -64,10 +64,6 @@ extern int gre_Blend(surface_t *write, int wx, int wy, surface_t *dst, int dx, i
 /* in gre_blend_screen.c */
 extern int gre_BlendScreen(surface_t *write, int wx, int wy, surface_t *dst, int dx, int dy, surface_t *src, int sx, int sy, int width, int height);
 
-/* in graph_buller */
-extern int gr_buller(surface_t *dst, int dx, int dy, surface_t *src, int sx, int sy, int width, int height, int step);
-extern int gr_buller_v(surface_t *dst, int dx, int dy, surface_t *src, int sx, int sy, int width, int height, int step);
-
 /* in graph_stretch.c */
 extern void gr_copy_stretch(surface_t *dst, int dx, int dy, int dw, int dh, surface_t *src, int sx, int sy, int sw, int sh);
 
diff --git a/src/ecopy.c b/src/ecopy.c
index bc2efae..4039988 100644
--- a/src/ecopy.c
+++ b/src/ecopy.c
@@ -885,6 +885,8 @@ static int duration(enum nact_effect effect, int opt, SDL_Rect *rect) {
 	case NACT_EFFECT_WINDMILL_180:
 	case NACT_EFFECT_WINDMILL_360:
 		 return opt ? opt : 1000;
+	case NACT_EFFECT_LINEAR_BLUR:
+		return opt ? opt : 1700;
 	}
 	return 1000;
 }
@@ -954,7 +956,6 @@ void ags_eCopyArea(int sx, int sy, int w, int h, int dx, int dy, int sw, int opt
 	case 19:
 	case 20:
 	case 21:
-	case 53:
 	case 54:
 		if (spCol == -1) {
 			ags_copyArea(sx, sy, w, h, dx, dy);
diff --git a/src/effect.h b/src/effect.h
index 267bae9..88e3a76 100644
--- a/src/effect.h
+++ b/src/effect.h
@@ -43,6 +43,7 @@ enum nact_effect {
 	NACT_EFFECT_WINDMILL         = 50,
 	NACT_EFFECT_WINDMILL_180     = 51,
 	NACT_EFFECT_WINDMILL_360     = 52,
+	NACT_EFFECT_LINEAR_BLUR      = 53,
 };
 
 // Effect types of SCAT.DrawEffect and Gpx.EffectCopy.
@@ -55,12 +56,14 @@ enum sact_effect {
 	SACT_EFFECT_BLIND_DOWN       = 7,
 	SACT_EFFECT_BLIND_LR         = 8,
 	SACT_EFFECT_BLIND_DOWN_LR    = 9,
+	SACT_EFFECT_LINEAR_BLUR      = 11,
 	SACT_EFFECT_CROSSFADE_DOWN   = 12,
 	SACT_EFFECT_CROSSFADE_UP     = 13,
 	SACT_EFFECT_PENTAGRAM_IN_OUT = 14,
 	SACT_EFFECT_PENTAGRAM_OUT_IN = 15,
 	SACT_EFFECT_HEXAGRAM_IN_OUT  = 16,
 	SACT_EFFECT_HEXAGRAM_OUT_IN  = 17,
+	SACT_EFFECT_LINEAR_BLUR_VERT = 19,
 	SACT_EFFECT_ROTATE_OUT       = 20,
 	SACT_EFFECT_ROTATE_IN        = 21,
 	SACT_EFFECT_ROTATE_OUT_CW    = 22,
@@ -87,6 +90,8 @@ enum sdl_effect_type {
 	EFFECT_CROSSFADE_UP,
 	EFFECT_CROSSFADE_LR,
 	EFFECT_CROSSFADE_RL,
+	EFFECT_LINEAR_BLUR,
+	EFFECT_LINEAR_BLUR_VERT,
 	EFFECT_PENTAGRAM_IN_OUT,
 	EFFECT_PENTAGRAM_OUT_IN,
 	EFFECT_HEXAGRAM_IN_OUT,
diff --git a/src/sdl_effect.c b/src/sdl_effect.c
index 847d2c2..15c681e 100644
--- a/src/sdl_effect.c
+++ b/src/sdl_effect.c
@@ -52,6 +52,7 @@ enum sdl_effect_type from_nact_effect(enum nact_effect effect) {
 	case NACT_EFFECT_WINDMILL:         return EFFECT_WINDMILL;
 	case NACT_EFFECT_WINDMILL_180:     return EFFECT_WINDMILL_180;
 	case NACT_EFFECT_WINDMILL_360:     return EFFECT_WINDMILL_360;
+	case NACT_EFFECT_LINEAR_BLUR:      return EFFECT_LINEAR_BLUR;
 	default:                           return EFFECT_INVALID;
 	}
 }
@@ -66,12 +67,14 @@ enum sdl_effect_type from_sact_effect(enum sact_effect effect) {
 	case SACT_EFFECT_BLIND_DOWN:       return EFFECT_BLIND_DOWN;
 	case SACT_EFFECT_BLIND_LR:         return EFFECT_BLIND_LR;
 	case SACT_EFFECT_BLIND_DOWN_LR:    return EFFECT_BLIND_DOWN_LR;
+	case SACT_EFFECT_LINEAR_BLUR:      return EFFECT_LINEAR_BLUR;
 	case SACT_EFFECT_CROSSFADE_DOWN:   return EFFECT_CROSSFADE_DOWN;
 	case SACT_EFFECT_CROSSFADE_UP:     return EFFECT_CROSSFADE_UP;
 	case SACT_EFFECT_PENTAGRAM_IN_OUT: return EFFECT_PENTAGRAM_IN_OUT;
 	case SACT_EFFECT_PENTAGRAM_OUT_IN: return EFFECT_PENTAGRAM_OUT_IN;
 	case SACT_EFFECT_HEXAGRAM_IN_OUT:  return EFFECT_HEXAGRAM_IN_OUT;
 	case SACT_EFFECT_HEXAGRAM_OUT_IN:  return EFFECT_HEXAGRAM_OUT_IN;
+	case SACT_EFFECT_LINEAR_BLUR_VERT: return EFFECT_LINEAR_BLUR_VERT;
 	case SACT_EFFECT_ROTATE_OUT:       return EFFECT_ROTATE_OUT;
 	case SACT_EFFECT_ROTATE_IN:        return EFFECT_ROTATE_IN;
 	case SACT_EFFECT_ROTATE_OUT_CW:    return EFFECT_ROTATE_OUT_CW;
@@ -474,6 +477,114 @@ static void blind_free(struct sdl_effect *eff) {
 	free(eff);
 }
 
+// EFFECT_LINEAR_BLUR, EFFECT_LINEAR_BLUR_VERT
+
+#define LINEAR_BLUR_STEPS 10
+
+struct linear_blur_effect {
+	struct sdl_effect eff;
+	SDL_Texture *blurred_old[LINEAR_BLUR_STEPS];
+	SDL_Texture *blurred_new[LINEAR_BLUR_STEPS];
+};
+
+static void linear_blur_step(struct sdl_effect *eff, double progress);
+static void linear_blur_free(struct sdl_effect *eff);
+
+static struct sdl_effect *linear_blur_new(SDL_Rect *rect, SDL_Surface *old, SDL_Surface *new, enum sdl_effect_type type) {
+	if (!SDL_RenderTargetSupported(sdl_renderer)) {
+		WARNING("Effect %d is not supported in this system. Falling back to crossfade.\n", type);
+		return crossfade_new(rect, old, new);
+	}
+
+	struct linear_blur_effect *lbe = calloc(1, sizeof(struct linear_blur_effect));
+	if (!lbe)
+		NOMEMERR();
+	effect_init(&lbe->eff, rect, old, new, type);
+	lbe->eff.step = linear_blur_step;
+	lbe->eff.finish = linear_blur_free;
+	return &lbe->eff;
+}
+
+static SDL_Texture *blur(struct linear_blur_effect *this, SDL_Texture *src, int stride) {
+	bool vertical = this->eff.type == EFFECT_LINEAR_BLUR_VERT;
+	int w = this->eff.dst_rect.w;
+	int h = this->eff.dst_rect.h;
+	SDL_Texture *dst = SDL_CreateTexture(sdl_renderer, SDL_PIXELFORMAT_RGB888, SDL_TEXTUREACCESS_TARGET, w, h);
+
+	SDL_SetRenderTarget(sdl_renderer, dst);
+	SDL_SetRenderDrawColor(sdl_renderer, 0, 0, 0, 255);
+	SDL_RenderClear(sdl_renderer);
+	SDL_SetTextureBlendMode(src, SDL_BLENDMODE_ADD);
+	SDL_SetTextureAlphaMod(src, 127);
+
+	SDL_Rect dr = {0, 0, w, h};
+	*(vertical ? &dr. y : &dr.x) = -stride / 2;
+	SDL_RenderCopy(sdl_renderer, src, NULL, &dr);
+	*(vertical ? &dr. y : &dr.x) = max(1, stride / 2);
+	SDL_RenderCopy(sdl_renderer, src, NULL, &dr);
+
+	// Copy the edge pixels to emulate texture clamping.
+	SDL_Rect sr = {0, 0, vertical ? w : 1, vertical ? 1 : h};
+	*(vertical ? &dr.h : &dr.w) = max(1, stride / 2);
+	*(vertical ? &dr.y : &dr.x) = 0;
+	SDL_RenderCopy(sdl_renderer, src, &sr, &dr);
+	if (stride > 1) {
+		if (vertical) {
+			sr.y = h - 1;
+			dr.y = h - stride / 2;
+		} else {
+			sr.x = w - 1;
+			dr.x = w - stride / 2;
+		}
+		SDL_RenderCopy(sdl_renderer, src, &sr, &dr);
+	}
+
+	SDL_SetTextureAlphaMod(src, 255);
+	SDL_SetTextureBlendMode(src, SDL_BLENDMODE_NONE);
+	SDL_SetRenderTarget(sdl_renderer, NULL);
+
+	return dst;
+}
+
+static void linear_blur_step(struct sdl_effect *eff, double progress) {
+	struct linear_blur_effect *this = (struct linear_blur_effect *)eff;
+
+	int step = progress * LINEAR_BLUR_STEPS * 2;
+	if (step == LINEAR_BLUR_STEPS * 2) {
+		SDL_RenderCopy(sdl_renderer, eff->tx_new, NULL, NULL);
+		SDL_RenderPresent(sdl_renderer);
+		return;
+	}
+
+	for (int i = 0; i <= step && i < LINEAR_BLUR_STEPS; i++) {
+		if (this->blurred_old[i])
+			continue;
+		this->blurred_old[i] = blur(this, i ? this->blurred_old[i - 1] : eff->tx_old, 1 << i);
+		this->blurred_new[i] = blur(this, i ? this->blurred_new[i - 1] : eff->tx_new, 1 << i);
+	}
+
+	int i = step < LINEAR_BLUR_STEPS ? step : LINEAR_BLUR_STEPS * 2 - 1 - step;
+	SDL_Texture *old = this->blurred_old[i];
+	SDL_Texture *new = this->blurred_new[i];
+	SDL_RenderCopy(sdl_renderer, old, NULL, &eff->dst_rect);
+	SDL_SetTextureBlendMode(new, SDL_BLENDMODE_BLEND);
+	SDL_SetTextureAlphaMod(new, 255 * progress);
+	SDL_RenderCopy(sdl_renderer, new, NULL, &eff->dst_rect);
+	SDL_RenderPresent(sdl_renderer);
+}
+
+static void linear_blur_free(struct sdl_effect *eff) {
+	struct linear_blur_effect *this = (struct linear_blur_effect *)eff;
+	for (int i = 0; i < LINEAR_BLUR_STEPS; i++) {
+		if (this->blurred_old[i])
+			SDL_DestroyTexture(this->blurred_old[i]);
+		if (this->blurred_new[i])
+			SDL_DestroyTexture(this->blurred_new[i]);
+	}
+	effect_finish(&this->eff, true);
+	free(this);
+}
+
 // EFFECT_PENTAGRAM_*, EFFECT_HEXAGRAM_*, EFFECT_WINDMILL*
 
 struct polygon_mask_effect {
@@ -835,6 +946,9 @@ struct sdl_effect *sdl_effect_init(SDL_Rect *rect, agsurface_t *old, int ox, int
 	case EFFECT_BLIND_UP_DOWN:
 	case EFFECT_BLIND_DOWN_LR:
 		return blind_new(rect, sf_old, sf_new, type);
+	case EFFECT_LINEAR_BLUR:
+	case EFFECT_LINEAR_BLUR_VERT:
+		return linear_blur_new(rect, sf_old, sf_new, type);
 	case EFFECT_PENTAGRAM_IN_OUT:
 	case EFFECT_PENTAGRAM_OUT_IN:
 	case EFFECT_HEXAGRAM_IN_OUT: