[Mesa-dev] [PATCH 43/78] i965/nir/vec4: Implement "bool<->int, float" format conversion

[Eduardo Lima Mitev]

From: Antia Puentes <apuentes at igalia.com>

Used the same implementation than the vec4_visitor NIR.

Adds NIR ALU operations:
   * nir_op_b2i
   * nir_op_b2f
   * nir_op_f2b
   * nir_op_i2b

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89580
---
 src/mesa/drivers/dri/i965/brw_vec4_nir.cpp | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
index 5d412d9..78f76ec 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
@@ -1040,6 +1040,25 @@ vec4_visitor::nir_emit_alu(nir_alu_instr *instr)
       emit(AND(dst, op[0], op[1]));
       break;
 
+   case nir_op_b2i:
+      emit(AND(dst, op[0], src_reg(1)));
+      break;
+
+   case nir_op_b2f:
+      op[0].type = BRW_REGISTER_TYPE_D;
+      dst.type = BRW_REGISTER_TYPE_D;
+      emit(AND(dst, op[0], src_reg(0x3f800000u)));
+      dst.type = BRW_REGISTER_TYPE_F;
+      break;
+
+   case nir_op_f2b:
+      emit(CMP(dst, op[0], src_reg(0.0f), BRW_CONDITIONAL_NZ));
+      break;
+
+   case nir_op_i2b:
+      emit(CMP(dst, op[0], src_reg(0), BRW_CONDITIONAL_NZ));
+      break;
+
    default:
       unreachable("Unimplemented ALU operation");
    }
-- 
2.1.4