nir: Add new 'plane' texture source type

This will be used to select the plane to sample from for planar
textures.

Reviewed-by: Jordan Justen <[email protected]>
Reviewed-by: Jason Ekstrand <[email protected]>

2 files changed, 4 insertions, 0 deletions

diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h
index 78913d30deb..ace6fbbb487 100644
--- a/src/compiler/nir/nir.h
+++ b/src/compiler/nir/nir.h
@@ -1074,6 +1074,7 @@ typedef enum {
    nir_tex_src_ddy,
    nir_tex_src_texture_offset, /* < dynamically uniform indirect offset */
    nir_tex_src_sampler_offset, /* < dynamically uniform indirect offset */
+   nir_tex_src_plane,          /* < selects plane for planar textures */
    nir_num_tex_src_types
 } nir_tex_src_type;
 
diff --git a/src/compiler/nir/nir_print.c b/src/compiler/nir/nir_print.c
index 021f0d618d2..36176ece5ef 100644
--- a/src/compiler/nir/nir_print.c
+++ b/src/compiler/nir/nir_print.c
@@ -717,6 +717,9 @@ print_tex_instr(nir_tex_instr *instr, print_state *state)
       case nir_tex_src_sampler_offset:
          fprintf(fp, "(sampler_offset)");
          break;
+      case nir_tex_src_plane:
+         fprintf(fp, "(plane)");
+         break;
 
       default:
          unreachable("Invalid texture source type");