radeonsi/nir: add interpolate at intrinsics to scan_instruction()

V2: use the uses_*_opcode_interp_* flags

Reviewed-by: Marek Olšák <marek.olsak@amd.com>

diff --git a/src/gallium/drivers/radeonsi/si_shader_nir.c b/src/gallium/drivers/radeonsi/si_shader_nir.c
index 453d31bd135e64e63af57f5d36b367cb5a2fbbd9..6368b712062793dee717466fa7a869169b06ceb6 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_shader_nir.c
+++ b/src/gallium/drivers/radeonsi/si_shader_nir.c
@@ -127,6 +127,36 @@ static void scan_instruction(struct tgsi_shader_info *info,
                case nir_intrinsic_ssbo_atomic_comp_swap:
                        info->writes_memory = true;
                        break;
+               case nir_intrinsic_interp_var_at_centroid:
+               case nir_intrinsic_interp_var_at_sample:
+               case nir_intrinsic_interp_var_at_offset: {
+                       enum glsl_interp_mode interp =
+                               intr->variables[0]->var->data.interpolation;
+                       switch (interp) {
+                       case INTERP_MODE_SMOOTH:
+                       case INTERP_MODE_NONE:
+                               if (intr->intrinsic == nir_intrinsic_interp_var_at_centroid)
+                                       info->uses_persp_opcode_interp_centroid = true;
+                               else if (intr->intrinsic == nir_intrinsic_interp_var_at_sample)
+                                       info->uses_persp_opcode_interp_sample = true;
+                               else
+                                       info->uses_persp_opcode_interp_offset = true;
+                               break;
+                       case INTERP_MODE_NOPERSPECTIVE:
+                               if (intr->intrinsic == nir_intrinsic_interp_var_at_centroid)
+                                       info->uses_linear_opcode_interp_centroid = true;
+                               else if (intr->intrinsic == nir_intrinsic_interp_var_at_sample)
+                                       info->uses_linear_opcode_interp_sample = true;
+                               else
+                                       info->uses_linear_opcode_interp_offset = true;
+                               break;
+                       case INTERP_MODE_FLAT:
+                               break;
+                       default:
+                               unreachable("Unsupported interpoation type");
+                       }
+                       break;
+               }
                default:
                        break;
                }