nir: Add nir_texop_samples_identical opcode

This is the NIR analog to GLSL IR ir_samples_identical.

v2: Don't add the second nir_tex_src_ms_index parameter.  Suggested by
Ken and Jason.

Signed-off-by: Ian Romanick <[email protected]>
Reviewed-by: Jason Ekstrand <[email protected]>
Reviewed-by: Chris Forbes <[email protected]>

2 files changed, 2 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp
index 3394e4a7567..8fc7ee42d6b 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp
@@ -2733,6 +2733,7 @@ fs_visitor::nir_emit_texture(const fs_builder &bld, nir_tex_instr *instr)
       inst->base_mrf = -1;
       return;
    }
+   case nir_texop_samples_identical: op = ir_samples_identical; break;
    default:
       unreachable("unknown texture opcode");
    }
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
index 3d186b49d4e..8088767bce6 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
@@ -1545,6 +1545,7 @@ ir_texture_opcode_for_nir_texop(nir_texop texop)
    case nir_texop_txf_ms: op = ir_txf_ms; break;
    case nir_texop_txl: op = ir_txl; break;
    case nir_texop_txs: op = ir_txs; break;
+   case nir_texop_samples_identical: op = ir_samples_identical; break;
    default:
       unreachable("unknown texture opcode");
    }