i965: Set up sandybridge depthbuffer.

src/mesa/drivers/dri/i965/brw_misc_state.c

@@ -209,7 +209,14 @@ static void emit_depthbuffer(struct brw_context *brw)
 {
    struct intel_context *intel = &brw->intel;
    struct intel_region *region = brw->state.depth_region;
-   unsigned int len = (intel->is_g4x || intel->is_ironlake) ? 6 : 5;
+   unsigned int len;
+
+   if (intel->gen >= 6)
+      len = 7;
+   else if (intel->is_g4x || intel->is_ironlake)
+      len = 6;
+   else
+      len = 5;
 
    if (region == NULL) {
       BEGIN_BATCH(len);
@@ -220,9 +227,12 @@ static void emit_depthbuffer(struct brw_context *brw)
       OUT_BATCH(0);
       OUT_BATCH(0);
 
-      if (intel->is_g4x || intel->is_ironlake)
+      if (intel->is_g4x || intel->is_ironlake || intel->gen >= 6)
          OUT_BATCH(0);
 
+      if (intel->gen >= 6)
+	 OUT_BATCH(0);
+
       ADVANCE_BATCH();
    } else {
       unsigned int format;
@@ -243,6 +253,8 @@ static void emit_depthbuffer(struct brw_context *brw)
       }
 
       assert(region->tiling != I915_TILING_X);
+      if (IS_GEN6(intel->intelScreen->deviceID))
+	 assert(region->tiling != I915_TILING_NONE);
 
       BEGIN_BATCH(len);
       OUT_BATCH(CMD_DEPTH_BUFFER << 16 | (len - 2));
@@ -259,9 +271,12 @@ static void emit_depthbuffer(struct brw_context *brw)
 		((region->height - 1) << 19));
       OUT_BATCH(0);
 
-      if (intel->is_g4x || intel->is_ironlake)
+      if (intel->is_g4x || intel->is_ironlake || intel->gen >= 6)
          OUT_BATCH(0);
 
+      if (intel->gen >= 6)
+	 OUT_BATCH(0);
+
       ADVANCE_BATCH();
    }
 }

src/mesa/drivers/dri/i965/brw_state_upload.c

@@ -143,9 +143,11 @@ const struct brw_tracked_state *gen6_atoms[] =
 
    &brw_binding_table_pointers,
    &brw_blend_constant_color,
+#endif
 
    &brw_depthbuffer,
 
+#if 0
    &brw_polygon_stipple,
    &brw_polygon_stipple_offset,
 

src/mesa/drivers/dri/intel/intel_decode.c

@@ -1592,7 +1592,7 @@ decode_3d_965(uint32_t *data, int count, uint32_t hw_offset, int *failures)
 	return len;
 
     case 0x7905:
-	if (len != 5 && len != 6)
+	if (len < 5 || len > 7)
 	    fprintf(out, "Bad count in 3DSTATE_DEPTH_BUFFER\n");
 	if (count < len)
 	    BUFFER_FAIL(count, len, "3DSTATE_DEPTH_BUFFER");
@@ -1611,6 +1611,8 @@ decode_3d_965(uint32_t *data, int count, uint32_t hw_offset, int *failures)
 	instr_out(data, hw_offset, 4, "volume depth\n");
 	if (len == 6)
 	    instr_out(data, hw_offset, 5, "\n");
+	if (len == 7)
+	    instr_out(data, hw_offset, 6, "render target view extent\n");
 
 	return len;