agx: Handle load_back_face_agx

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11199>

diff --git a/src/asahi/compiler/agx_compile.c b/src/asahi/compiler/agx_compile.c
index 644b22c..e979657 100644 (file)
--- a/src/asahi/compiler/agx_compile.c
+++ b/src/asahi/compiler/agx_compile.c
@@ -312,6 +312,9 @@ agx_emit_intrinsic(agx_builder *b, nir_intrinsic_instr *instr)
   case nir_intrinsic_load_kernel_input:
      return agx_emit_load_ubo(b, instr);
 
+  case nir_intrinsic_load_back_face_agx:
+     return agx_get_sr_to(b, dst, AGX_SR_BACKFACING);
+
   case nir_intrinsic_load_vertex_id:
      return agx_mov_to(b, dst, agx_abs(agx_register(10, AGX_SIZE_32))); /* TODO: RA */