blorp: Use FullSurfaceDepthandStencilClear for blorp_hiz_op

The blorp_hiz_op entrypoint always acts on a full subresource of a HiZ
buffer so we can just set the flag unconditionally.

Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>

src/intel/blorp/blorp.c

@@ -294,6 +294,7 @@ blorp_hiz_op(struct blorp_batch *batch, struct blorp_surf *surf,
    blorp_params_init(&params);
 
    params.hiz_op = op;
+   params.full_surface_hiz_op = true;
 
    for (uint32_t a = 0; a < num_layers; a++) {
       const uint32_t layer = start_layer + a;

src/intel/blorp/blorp_genX_exec.h

@@ -1470,11 +1470,14 @@ blorp_emit_gen8_hiz_op(struct blorp_batch *batch,
          hzp.StencilBufferClearEnable = params->stencil.enabled;
          hzp.DepthBufferClearEnable = params->depth.enabled;
          hzp.StencilClearValue = params->stencil_ref;
+         hzp.FullSurfaceDepthandStencilClear = params->full_surface_hiz_op;
          break;
       case BLORP_HIZ_OP_DEPTH_RESOLVE:
+         assert(params->full_surface_hiz_op);
          hzp.DepthBufferResolveEnable = true;
          break;
       case BLORP_HIZ_OP_HIZ_RESOLVE:
+         assert(params->full_surface_hiz_op);
          hzp.HierarchicalDepthBufferResolveEnable = true;
          break;
       case BLORP_HIZ_OP_NONE:

src/intel/blorp/blorp_priv.h

@@ -185,6 +185,7 @@ struct blorp_params
    struct brw_blorp_surface_info src;
    struct brw_blorp_surface_info dst;
    enum blorp_hiz_op hiz_op;
+   bool full_surface_hiz_op;
    enum blorp_fast_clear_op fast_clear_op;
    bool color_write_disable[4];
    struct brw_blorp_wm_inputs wm_inputs;