[Mesa-dev] [PATCH 17/22] nvir/nir: implement intrinsic_discard(_if)

[Karol Herbst]

Signed-off-by: Karol Herbst <kherbst at redhat.com>
---
 src/gallium/drivers/nouveau/codegen/nv50_ir_from_nir.cpp | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_from_nir.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_from_nir.cpp
index cf324a3e8f..412675fcb1 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_from_nir.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_from_nir.cpp
@@ -1252,6 +1252,21 @@ Converter::visit(nir_intrinsic_instr *insn)
       }
       break;
    }
+   case nir_intrinsic_discard:
+      mkOp(OP_DISCARD, TYPE_NONE, NULL);
+      break;
+   case nir_intrinsic_discard_if: {
+      // we get a nir boolean value
+      Value *pred = new_LValue(func, FILE_PREDICATE);
+      if (insn->num_components > 1) {
+         ERROR("nir_intrinsic_discard_if only with 1 component supported!\n");
+         assert(false);
+         return false;
+      }
+      mkCmp(OP_SET, CC_NE, TYPE_U8, pred, TYPE_U32, getSrc(&insn->src[0], 0), zero);
+      mkOp(OP_DISCARD, TYPE_NONE, NULL)->setPredicate(CC_P, pred);
+      break;
+   }
    default:
       ERROR("unknown nir_intrinsic_op %s\n", nir_intrinsic_infos[insn->intrinsic].name);
       return false;
-- 
2.14.3