[Mesa-dev] [PATCH v3 23/48] intel/fs: Assign constant locations if they haven't been assigned

Jason Ekstrand jason at jlekstrand.net
Wed Oct 25 23:25:54 UTC 2017


Before, we bailing in assign_constant_locations based on the minimum
dispatch size.  The more direct thing to do is simply to check for
whether or not we have constant locations and bail if we do.  For
nir_setup_uniforms, it's completely safe to do it multiple times because
we just copy a value from the NIR shader.
---
 src/intel/compiler/brw_fs.cpp     | 4 +++-
 src/intel/compiler/brw_fs_nir.cpp | 5 ++++-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/intel/compiler/brw_fs.cpp b/src/intel/compiler/brw_fs.cpp
index 52079d3..75139fd 100644
--- a/src/intel/compiler/brw_fs.cpp
+++ b/src/intel/compiler/brw_fs.cpp
@@ -1956,8 +1956,10 @@ void
 fs_visitor::assign_constant_locations()
 {
    /* Only the first compile gets to decide on locations. */
-   if (dispatch_width != min_dispatch_width)
+   if (push_constant_loc) {
+      assert(pull_constant_loc);
       return;
+   }
 
    bool is_live[uniforms];
    memset(is_live, 0, sizeof(is_live));
diff --git a/src/intel/compiler/brw_fs_nir.cpp b/src/intel/compiler/brw_fs_nir.cpp
index 7556576..05efee3 100644
--- a/src/intel/compiler/brw_fs_nir.cpp
+++ b/src/intel/compiler/brw_fs_nir.cpp
@@ -81,8 +81,11 @@ fs_visitor::nir_setup_outputs()
 void
 fs_visitor::nir_setup_uniforms()
 {
-   if (dispatch_width != min_dispatch_width)
+   /* Only the first compile gets to set up uniforms. */
+   if (push_constant_loc) {
+      assert(pull_constant_loc);
       return;
+   }
 
    uniforms = nir->num_uniforms / 4;
 }
-- 
2.5.0.400.gff86faf



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