Mesa (master): i965/fs: Do not mark direct used surfaces in VARYING_PULL_CONSTANT_LOAD

[Iago Toral Quiroga]

Module: Mesa
Branch: master
Commit: 027b64a55afc0fe8efcf9f6217192807e285c830
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=027b64a55afc0fe8efcf9f6217192807e285c830

Author: Iago Toral Quiroga <itoral at igalia.com>
Date:   Fri Oct 30 08:39:11 2015 +0100

i965/fs: Do not mark direct used surfaces in VARYING_PULL_CONSTANT_LOAD

Right now the generator marks direct surfaces as used but leaves marking of
indirect surfaces to the caller. Just make the callers handle marking in both
cases for consistency.

v2: Use const and remove useless surf_index temporary (Curro)

Reviewed-by: Francisco Jerez <currojerez at riseup.net>

---

 src/mesa/drivers/dri/i965/brw_fs.cpp           |    7 ++++---
 src/mesa/drivers/dri/i965/brw_fs_generator.cpp |    8 --------
 src/mesa/drivers/dri/i965/brw_fs_nir.cpp       |    6 ++++--
 3 files changed, 8 insertions(+), 13 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp
index cb25362..a813746 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -2012,7 +2012,7 @@ fs_visitor::demote_pull_constants()
 
          /* Set up the annotation tracking for new generated instructions. */
          const fs_builder ibld(this, block, inst);
-         fs_reg surf_index(stage_prog_data->binding_table.pull_constants_start);
+         const unsigned index = stage_prog_data->binding_table.pull_constants_start;
          fs_reg dst = vgrf(glsl_type::float_type);
 
          assert(inst->src[i].stride == 0);
@@ -2020,16 +2020,17 @@ fs_visitor::demote_pull_constants()
          /* Generate a pull load into dst. */
          if (inst->src[i].reladdr) {
             VARYING_PULL_CONSTANT_LOAD(ibld, dst,
-                                       surf_index,
+                                       fs_reg(index),
                                        *inst->src[i].reladdr,
                                        pull_index);
             inst->src[i].reladdr = NULL;
             inst->src[i].stride = 1;
+            brw_mark_surface_used(prog_data, index);
          } else {
             const fs_builder ubld = ibld.exec_all().group(8, 0);
             fs_reg offset = fs_reg((unsigned)(pull_index * 4) & ~15);
             ubld.emit(FS_OPCODE_UNIFORM_PULL_CONSTANT_LOAD,
-                      dst, surf_index, offset);
+                      dst, fs_reg(index), offset);
             inst->src[i].set_smear(pull_index & 3);
          }
 
diff --git a/src/mesa/drivers/dri/i965/brw_fs_generator.cpp b/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
index 28fb620..8715263 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_generator.cpp
@@ -1349,8 +1349,6 @@ fs_generator::generate_varying_pull_constant_load(fs_inst *inst,
                            inst->header_size != 0,
                            simd_mode,
                            return_format);
-
-   brw_mark_surface_used(prog_data, surf_index);
 }
 
 void
@@ -1395,8 +1393,6 @@ fs_generator::generate_varying_pull_constant_load_gen7(fs_inst *inst,
                               simd_mode,
                               0);
 
-      brw_mark_surface_used(prog_data, surf_index);
-
    } else {
 
       struct brw_reg addr = vec1(retype(brw_address_reg(0), BRW_REGISTER_TYPE_UD));
@@ -1427,10 +1423,6 @@ fs_generator::generate_varying_pull_constant_load_gen7(fs_inst *inst,
                               false /* header */,
                               simd_mode,
                               0);
-
-      /* visitor knows more than we do about the surface limit required,
-       * so has already done marking.
-       */
    }
 }
 
diff --git a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp
index e7a39ff..50b8218 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp
@@ -1827,8 +1827,10 @@ fs_visitor::nir_emit_intrinsic(const fs_builder &bld, nir_intrinsic_instr *instr
       fs_reg surf_index;
 
       if (const_index) {
-         surf_index = fs_reg(stage_prog_data->binding_table.ubo_start +
-                             const_index->u[0]);
+         const unsigned index = stage_prog_data->binding_table.ubo_start +
+                                const_index->u[0];
+         surf_index = fs_reg(index);
+         brw_mark_surface_used(prog_data, index);
       } else {
          /* The block index is not a constant. Evaluate the index expression
           * per-channel and add the base UBO index; we have to select a value