diff --git a/src/radeon_commonfuncs.c b/src/radeon_commonfuncs.c
index 4fac76a..219df9e 100644
--- a/src/radeon_commonfuncs.c
+++ b/src/radeon_commonfuncs.c
@@ -569,10 +569,10 @@ static void FUNC_NAME(RADEONInit3DEngine)(ScrnInfoPtr pScrn)
 	OUT_ACCEL_REG(R300_SC_EDGERULE, 0xA5294A5);
 	if (IS_R300_3D) {
 	    /* clip has offset 1440 */
-	    OUT_ACCEL_REG(R300_SC_CLIP_0_A, ((1088 << R300_CLIP_X_SHIFT) |
-					     (1088 << R300_CLIP_Y_SHIFT)));
-	    OUT_ACCEL_REG(R300_SC_CLIP_0_B, (((1080 + 2920) << R300_CLIP_X_SHIFT) |
-					     ((1080 + 2920) << R300_CLIP_Y_SHIFT)));
+	    OUT_ACCEL_REG(R300_SC_CLIP_0_A, ((1440 << R300_CLIP_X_SHIFT) |
+					     (1440 << R300_CLIP_Y_SHIFT)));
+	    OUT_ACCEL_REG(R300_SC_CLIP_0_B, ((4080 << R300_CLIP_X_SHIFT) |
+					     (4080 << R300_CLIP_Y_SHIFT)));
 	} else {
 	    OUT_ACCEL_REG(R300_SC_CLIP_0_A, ((0 << R300_CLIP_X_SHIFT) |
 					     (0 << R300_CLIP_Y_SHIFT)));
diff --git a/src/radeon_exa_render.c b/src/radeon_exa_render.c
index 51f5b5d..101def6 100644
--- a/src/radeon_exa_render.c
+++ b/src/radeon_exa_render.c
@@ -2159,8 +2159,12 @@ static Bool FUNC_NAME(R300PrepareComposite)(int op, PicturePtr pSrcPicture,
 
     /* Clear out scissoring */
     BEGIN_ACCEL(2);
-    OUT_ACCEL_REG(R300_SC_SCISSOR0, ((0 << R300_SCISSOR_X_SHIFT) |
-				     (0 << R300_SCISSOR_Y_SHIFT)));
+    if (IS_R300_3D)
+	OUT_ACCEL_REG(R300_SC_SCISSOR0, ((1440 << R300_SCISSOR_X_SHIFT) |
+					 (1440 << R300_SCISSOR_Y_SHIFT)));
+    else
+	OUT_ACCEL_REG(R300_SC_SCISSOR0, ((0 << R300_SCISSOR_X_SHIFT) |
+					 (0 << R300_SCISSOR_Y_SHIFT)));
     OUT_ACCEL_REG(R300_SC_SCISSOR1, ((8191 << R300_SCISSOR_X_SHIFT) |
 				     (8191 << R300_SCISSOR_Y_SHIFT)));
     FINISH_ACCEL();
diff --git a/src/radeon_textured_videofuncs.c b/src/radeon_textured_videofuncs.c
index d3fa490..f683016 100644
--- a/src/radeon_textured_videofuncs.c
+++ b/src/radeon_textured_videofuncs.c
@@ -2143,10 +2143,10 @@ FUNC_NAME(RADEONDisplayTexturedVideo)(ScrnInfoPtr pScrn, RADEONPortPrivPtr pPriv
 	    BEGIN_ACCEL(2);
 	    if (IS_R300_3D) {
 		/* R300 has an offset */
-		OUT_ACCEL_REG(R300_SC_SCISSOR0, (((dstX + 1088) << R300_SCISSOR_X_SHIFT) |
-						 ((dstY + 1088) << R300_SCISSOR_Y_SHIFT)));
-		OUT_ACCEL_REG(R300_SC_SCISSOR1, (((dstX + dstw + 1088 - 1) << R300_SCISSOR_X_SHIFT) |
-						 ((dstY + dsth + 1088 - 1) << R300_SCISSOR_Y_SHIFT)));
+		OUT_ACCEL_REG(R300_SC_SCISSOR0, (((dstX + 1440) << R300_SCISSOR_X_SHIFT) |
+						 ((dstY + 1440) << R300_SCISSOR_Y_SHIFT)));
+		OUT_ACCEL_REG(R300_SC_SCISSOR1, (((dstX + dstw + 1440 - 1) << R300_SCISSOR_X_SHIFT) |
+						 ((dstY + dsth + 1440 - 1) << R300_SCISSOR_Y_SHIFT)));
 	    } else {
 		OUT_ACCEL_REG(R300_SC_SCISSOR0, (((dstX) << R300_SCISSOR_X_SHIFT) |
 						 ((dstY) << R300_SCISSOR_Y_SHIFT)));