[Mesa-dev] [PATCH 05/13] nir: Preserve offsets in lower_io_to_scalar_early

[Jason Ekstrand]

---
 src/compiler/nir/nir_lower_io_to_scalar.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/compiler/nir/nir_lower_io_to_scalar.c 
b/src/compiler/nir/nir_lower_io_to_scalar.c
index f0c2a6a95d6..a7373d0e791 100644
--- a/src/compiler/nir/nir_lower_io_to_scalar.c
+++ b/src/compiler/nir/nir_lower_io_to_scalar.c
@@ -192,6 +192,10 @@ lower_load_to_scalar_early(nir_builder *b, 
nir_intrinsic_instr *intr,
          chan_var = nir_variable_clone(var, b->shader);
          chan_var->data.location_frac =  var->data.location_frac + i;
          chan_var->type = glsl_channel_type(chan_var->type);
+         if (var->data.explicit_offset) {
+            unsigned comp_size = glsl_get_bit_size(chan_var->type) / 8;
+            chan_var->data.offset = var->data.offset + i * comp_size;
+         }
 
          chan_vars[var->data.location_frac + i] = chan_var;
 
@@ -246,6 +250,10 @@ lower_store_output_to_scalar_early(nir_builder *b, 
nir_intrinsic_instr *intr,
          chan_var = nir_variable_clone(var, b->shader);
          chan_var->data.location_frac =  var->data.location_frac + i;
          chan_var->type = glsl_channel_type(chan_var->type);
+         if (var->data.explicit_offset) {
+            unsigned comp_size = glsl_get_bit_size(chan_var->type) / 8;
+            chan_var->data.offset = var->data.offset + i * comp_size;
+         }
 
          chan_vars[var->data.location_frac + i] = chan_var;
 
-- 
2.19.1

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