r300g: if no DS buffer is set, disable reading from and writing to it

[mesa.git] / src / gallium / drivers / r300 / r300_emit.c

diff --git a/src/gallium/drivers/r300/r300_emit.c b/src/gallium/drivers/r300/r300_emit.c
index 30a1000c29413e045a1788e8ac70000279c5c03f..f8bfa714fefe458e02466140d5ec2ea794e61af7 100644 (file)
--- a/src/gallium/drivers/r300/r300_emit.c
+++ b/src/gallium/drivers/r300/r300_emit.c
@@ -121,8 +121,15 @@ void r300_emit_dsa_state(struct r300_context* r300,
     }*/
 
     OUT_CS_REG_SEQ(R300_ZB_CNTL, 3);
-    OUT_CS(dsa->z_buffer_control);
-    OUT_CS(dsa->z_stencil_control);
+
+    if (r300->framebuffer_state.zsbuf) {
+        OUT_CS(dsa->z_buffer_control);
+        OUT_CS(dsa->z_stencil_control);
+    } else {
+        OUT_CS(0);
+        OUT_CS(0);
+    }
+
     OUT_CS(dsa->stencil_ref_mask);
     OUT_CS_REG(R300_ZB_ZTOP, r300->ztop_state.z_buffer_top);