[Mesa-dev] [PATCH 18/25] intel/blorp: Add capability to use pre-baked binding tables

[Jason Ekstrand]

When a pre-baked binding table is requested, no binding table is created,
instead the binding table offset (relative to surface state base address)
provided by the user is used verbatim.
---
 src/intel/blorp/blorp_genX_exec.h | 44 +++++++++++++++++++++------------------
 src/intel/blorp/blorp_priv.h      |  3 +++
 2 files changed, 27 insertions(+), 20 deletions(-)

diff --git a/src/intel/blorp/blorp_genX_exec.h 
b/src/intel/blorp/blorp_genX_exec.h
index 47267e5..d17c661 100644
--- a/src/intel/blorp/blorp_genX_exec.h
+++ b/src/intel/blorp/blorp_genX_exec.h
@@ -1107,28 +1107,32 @@ blorp_emit_surface_states(struct blorp_batch *batch,
    uint32_t bind_offset, surface_offsets[2];
    void *surface_maps[2];
 
-   unsigned num_surfaces = 1 + params->src.enabled;
-   blorp_alloc_binding_table(batch, num_surfaces,
-                             isl_dev->ss.size, isl_dev->ss.align,
-                             &bind_offset, surface_offsets, surface_maps);
-
-   if (params->dst.enabled) {
-      blorp_emit_surface_state(batch, &params->dst,
-                               surface_maps[BLORP_RENDERBUFFER_BT_INDEX],
-                               surface_offsets[BLORP_RENDERBUFFER_BT_INDEX],
-                               true);
+   if (params->use_pre_baked_binding_table) {
+      bind_offset = params->pre_baked_binding_table_offset;
    } else {
-      assert(params->depth.enabled || params->stencil.enabled);
-      const struct brw_blorp_surface_info *surface =
-         params->depth.enabled ? &params->depth : &params->stencil;
-      blorp_emit_null_surface_state(batch, surface,
-                                    surface_maps[BLORP_RENDERBUFFER_BT_INDEX]);
-   }
+      unsigned num_surfaces = 1 + params->src.enabled;
+      blorp_alloc_binding_table(batch, num_surfaces,
+                                isl_dev->ss.size, isl_dev->ss.align,
+                                &bind_offset, surface_offsets, surface_maps);
+
+      if (params->dst.enabled) {
+         blorp_emit_surface_state(batch, &params->dst,
+                                  surface_maps[BLORP_RENDERBUFFER_BT_INDEX],
+                                  surface_offsets[BLORP_RENDERBUFFER_BT_INDEX],
+                                  true);
+      } else {
+         assert(params->depth.enabled || params->stencil.enabled);
+         const struct brw_blorp_surface_info *surface =
+            params->depth.enabled ? &params->depth : &params->stencil;
+         blorp_emit_null_surface_state(batch, surface,
+                                       
surface_maps[BLORP_RENDERBUFFER_BT_INDEX]);
+      }
 
-   if (params->src.enabled) {
-      blorp_emit_surface_state(batch, &params->src,
-                               surface_maps[BLORP_TEXTURE_BT_INDEX],
-                               surface_offsets[BLORP_TEXTURE_BT_INDEX], false);
+      if (params->src.enabled) {
+         blorp_emit_surface_state(batch, &params->src,
+                                  surface_maps[BLORP_TEXTURE_BT_INDEX],
+                                  surface_offsets[BLORP_TEXTURE_BT_INDEX], 
false);
+      }
    }
 
 #if GEN_GEN >= 7
diff --git a/src/intel/blorp/blorp_priv.h b/src/intel/blorp/blorp_priv.h
index e364fe3..31e7aae 100644
--- a/src/intel/blorp/blorp_priv.h
+++ b/src/intel/blorp/blorp_priv.h
@@ -222,6 +222,9 @@ struct blorp_params
    struct brw_vs_prog_data *vs_prog_data;
    uint32_t wm_prog_kernel;
    struct brw_blorp_prog_data *wm_prog_data;
+
+   bool use_pre_baked_binding_table;
+   uint32_t pre_baked_binding_table_offset;
 };
 
 void blorp_params_init(struct blorp_params *params);
-- 
2.5.0.400.gff86faf

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