diff --git a/src/render_program/exa_wm_src_sample_argb.g4a b/src/render_program/exa_wm_src_sample_argb.g4a
index c20f53f..384fe26 100644
--- a/src/render_program/exa_wm_src_sample_argb.g4a
+++ b/src/render_program/exa_wm_src_sample_argb.g4a
@@ -36,12 +36,13 @@ include(`exa_wm.g4i')
 
 /* load argb */
 mov (1) g0.8<1>UD	0x00000000UD { align1 mask_disable };
+mov (8) src_msg<1>UD g0<8,8,1>UD { align1 }; /* copy to msg start reg*/
 
 /* src_msg will be copied with g0, as it contains send desc */
 /* emit sampler 'send' cmd */
 send (16) src_msg_ind		/* msg reg index */
 	src_sample_base<1>UW 	/* readback */
-	g0<8,8,1>UW		/* copy to msg start reg*/
+	null
 	sampler (1,0,F)		/* sampler message description, (binding_table,sampler_index,datatype)
 				/* here(src->dst) we should use src_sampler and src_surface */
 	mlen 5 rlen 8 { align1 };   /* required message len 5, readback len 8 */
diff --git a/src/render_program/exa_wm_src_sample_argb.g4b b/src/render_program/exa_wm_src_sample_argb.g4b
index c5b9274..a15e40a 100644
--- a/src/render_program/exa_wm_src_sample_argb.g4b
+++ b/src/render_program/exa_wm_src_sample_argb.g4b
@@ -1,2 +1,3 @@
    { 0x00000201, 0x20080061, 0x00000000, 0x00000000 },
-   { 0x01800031, 0x21c01d29, 0x008d0000, 0x02580001 },
+   { 0x00600001, 0x20200022, 0x008d0000, 0x00000000 },
+   { 0x01800031, 0x21c01c09, 0x00000000, 0x02580001 },
diff --git a/src/render_program/exa_wm_src_sample_argb.g4b.gen5 b/src/render_program/exa_wm_src_sample_argb.g4b.gen5
index f8cb41e..42039af 100644
--- a/src/render_program/exa_wm_src_sample_argb.g4b.gen5
+++ b/src/render_program/exa_wm_src_sample_argb.g4b.gen5
@@ -1,2 +1,3 @@
    { 0x00000201, 0x20080061, 0x00000000, 0x00000000 },
-   { 0x01800031, 0x21c01d29, 0x208d0000, 0x0a8a0001 },
+   { 0x00600001, 0x20200022, 0x008d0000, 0x00000000 },
+   { 0x01800031, 0x21c01c09, 0x20000000, 0x0a8a0001 },
diff --git a/src/render_program/exa_wm_src_sample_planar.g4a b/src/render_program/exa_wm_src_sample_planar.g4a
index ad33350..5f5520b 100644
--- a/src/render_program/exa_wm_src_sample_planar.g4a
+++ b/src/render_program/exa_wm_src_sample_planar.g4a
@@ -41,9 +41,10 @@ mov (1) g0.8<1>UD	0x0000e000UD { align1 mask_disable };
 /* emit sampler 'send' cmd */
 
 /* sample Y */
+mov (8) src_msg<1>UD g0<8,8,1>UD { align1 }; /* copy to msg start reg*/
 send (16) src_msg_ind		/* msg reg index */
 	src_sample_g<1>UW 	/* readback */
-	g0<8,8,1>UW		/* copy to msg start reg*/
+	null
 	sampler (1,0,F)		/* sampler message description, (binding_table,sampler_index,datatype)
 				/* here(src->dst) we should use src_sampler and src_surface */
 	mlen 5 rlen 2 { align1 };   /* required message len 5, readback len 8 */
@@ -51,7 +52,7 @@ send (16) src_msg_ind		/* msg reg index */
 /* sample U (Cr) */
 send (16) src_msg_ind		/* msg reg index */
 	src_sample_r<1>UW 	/* readback */
-	g0<8,8,1>UW		/* copy to msg start reg*/
+	null
 	sampler (3,0,F)		/* sampler message description, (binding_table,sampler_index,datatype)
 				/* here(src->dst) we should use src_sampler and src_surface */
 	mlen 5 rlen 2 { align1 };   /* required message len 5, readback len 8 */
@@ -59,7 +60,7 @@ send (16) src_msg_ind		/* msg reg index */
 /* sample V (Cb) */
 send (16) src_msg_ind		/* msg reg index */
 	src_sample_b<1>UW 	/* readback */
-	g0<8,8,1>UW		/* copy to msg start reg*/
+	null
 	sampler (5,0,F)		/* sampler message description, (binding_table,sampler_index,datatype)
 				/* here(src->dst) we should use src_sampler and src_surface */
 	mlen 5 rlen 2 { align1 };   /* required message len 5, readback len 8 */
diff --git a/src/render_program/exa_wm_src_sample_planar.g4b b/src/render_program/exa_wm_src_sample_planar.g4b
index 23e5e0d..c8dc47d 100644
--- a/src/render_program/exa_wm_src_sample_planar.g4b
+++ b/src/render_program/exa_wm_src_sample_planar.g4b
@@ -1,4 +1,5 @@
    { 0x00000201, 0x20080061, 0x00000000, 0x0000e000 },
-   { 0x01800031, 0x22001d29, 0x008d0000, 0x02520001 },
-   { 0x01800031, 0x21c01d29, 0x008d0000, 0x02520003 },
-   { 0x01800031, 0x22401d29, 0x008d0000, 0x02520005 },
+   { 0x00600001, 0x20200022, 0x008d0000, 0x00000000 },
+   { 0x01800031, 0x22001c09, 0x00000000, 0x02520001 },
+   { 0x01800031, 0x21c01c09, 0x00000000, 0x02520003 },
+   { 0x01800031, 0x22401c09, 0x00000000, 0x02520005 },
diff --git a/src/render_program/exa_wm_src_sample_planar.g4b.gen5 b/src/render_program/exa_wm_src_sample_planar.g4b.gen5
index 71068d9..ce3670b 100644
--- a/src/render_program/exa_wm_src_sample_planar.g4b.gen5
+++ b/src/render_program/exa_wm_src_sample_planar.g4b.gen5
@@ -1,4 +1,5 @@
    { 0x00000201, 0x20080061, 0x00000000, 0x0000e000 },
-   { 0x01800031, 0x22001d29, 0x208d0000, 0x0a2a0001 },
-   { 0x01800031, 0x21c01d29, 0x208d0000, 0x0a2a0003 },
-   { 0x01800031, 0x22401d29, 0x208d0000, 0x0a2a0005 },
+   { 0x00600001, 0x20200022, 0x008d0000, 0x00000000 },
+   { 0x01800031, 0x22001c09, 0x20000000, 0x0a2a0001 },
+   { 0x01800031, 0x21c01c09, 0x20000000, 0x0a2a0003 },
+   { 0x01800031, 0x22401c09, 0x20000000, 0x0a2a0005 },
