3 files changed, 7 insertions, 3 deletions
diff --git a/src/mesa/drivers/dri/r300/r300_ioctl.c b/src/mesa/drivers/dri/r300/r300_ioctl.c
index 6fa34ee482a..41114a875dc 100644
--- a/src/mesa/drivers/dri/r300/r300_ioctl.c
+++ b/src/mesa/drivers/dri/r300/r300_ioctl.c
@@ -165,7 +165,7 @@ static void r300ClearBuffer(r300ContextPtr r300, int flags, int buffer)
 	e32(0x0000000a);
 	  
 
-	reg_start(0x4f18,0);
+	reg_start(R300_RB3D_ZCACHE_CTLSTAT,0);
 	e32(0x00000003);
 	cp_wait(rmesa, R300_WAIT_3D | R300_WAIT_3D_CLEAN);
 }
diff --git a/src/mesa/drivers/dri/r300/r300_reg.h b/src/mesa/drivers/dri/r300/r300_reg.h
index 7bc832c871c..be357ab5c73 100644
--- a/src/mesa/drivers/dri/r300/r300_reg.h
+++ b/src/mesa/drivers/dri/r300/r300_reg.h
@@ -1395,6 +1395,10 @@ USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 /* gap */
 
+#define R300_RB3D_ZCACHE_CTLSTAT            0x4F18 /* GUESS */
+
+/* gap */
+
 #define R300_RB3D_DEPTHOFFSET               0x4F20
 #define R300_RB3D_DEPTHPITCH                0x4F24
 #       define R300_DEPTHPITCH_MASK              0x00001FF8 /* GUESS */
diff --git a/src/mesa/drivers/dri/r300/r300_render.c b/src/mesa/drivers/dri/r300/r300_render.c
index 211c451f661..7a850b10010 100644
--- a/src/mesa/drivers/dri/r300/r300_render.c
+++ b/src/mesa/drivers/dri/r300/r300_render.c
@@ -346,7 +346,7 @@ GLboolean r300_run_vb_render(GLcontext *ctx,
 	reg_start(R300_RB3D_DSTCACHE_CTLSTAT,0);
 	e32(0x0000000a);
 
-	reg_start(0x4f18,0);
+	reg_start(R300_RB3D_ZCACHE_CTLSTAT,0);
 	e32(0x00000003);
 	
 	r300EmitState(rmesa);
@@ -362,7 +362,7 @@ GLboolean r300_run_vb_render(GLcontext *ctx,
 	reg_start(R300_RB3D_DSTCACHE_CTLSTAT,0);
 	e32(0x0000000a/*0x2*/);
 
-	reg_start(0x4f18,0);
+	reg_start(R300_RB3D_ZCACHE_CTLSTAT,0);
 	e32(0x00000003/*0x1*/);
 
 #ifdef USER_BUFFERS