nir: add streams to nir data

This will be used by gallium drivers.

Reviewed-by: Marek Olšák <[email protected]>

2 files changed, 9 insertions, 0 deletions

diff --git a/src/compiler/glsl/glsl_to_nir.cpp b/src/compiler/glsl/glsl_to_nir.cpp
index caea2ea3b2b..d327f52be60 100644
--- a/src/compiler/glsl/glsl_to_nir.cpp
+++ b/src/compiler/glsl/glsl_to_nir.cpp
@@ -322,6 +322,7 @@ nir_visitor::visit(ir_variable *ir)
    var->data.patch = ir->data.patch;
    var->data.invariant = ir->data.invariant;
    var->data.location = ir->data.location;
+   var->data.stream = ir->data.stream;
    var->data.compact = false;
 
    switch(ir->data.mode) {
diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h
index 6d28a8b3223..c055d300b66 100644
--- a/src/compiler/nir/nir.h
+++ b/src/compiler/nir/nir.h
@@ -275,6 +275,14 @@ typedef struct nir_variable {
       unsigned int driver_location;
 
       /**
+       * Vertex stream output identifier.
+       *
+       * For packed outputs, bit 31 is set and bits [2*i+1,2*i] indicate the
+       * stream of the i-th component.
+       */
+      unsigned stream;
+
+      /**
        * output index for dual source blending.
        */
       int index;