Mesa (master): i965/fs: Add support for ir_unop_saturate

[Abdiel Janulgue]

Module: Mesa
Branch: master
Commit: 4bfe8a1e613ac4798f52944e2ef1f34ebd859251
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=4bfe8a1e613ac4798f52944e2ef1f34ebd859251

Author: Abdiel Janulgue <abdiel.janulgue at linux.intel.com>
Date:   Mon Jun 16 10:35:44 2014 -0700

i965/fs: Add support for ir_unop_saturate

Reviewed-by: Matt Turner <mattst88 at gmail.com>
Signed-off-by: Abdiel Janulgue <abdiel.janulgue at linux.intel.com>

---

 src/mesa/drivers/dri/i965/brw_fs_channel_expressions.cpp |    1 +
 src/mesa/drivers/dri/i965/brw_fs_visitor.cpp             |    4 ++++
 2 files changed, 5 insertions(+)

diff --git a/src/mesa/drivers/dri/i965/brw_fs_channel_expressions.cpp b/src/mesa/drivers/dri/i965/brw_fs_channel_expressions.cpp
index d98b7eb..cb0a079 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_channel_expressions.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_channel_expressions.cpp
@@ -246,6 +246,7 @@ ir_channel_expressions_visitor::visit_leave(ir_assignment *ir)
    case ir_unop_bit_count:
    case ir_unop_find_msb:
    case ir_unop_find_lsb:
+   case ir_unop_saturate:
       for (i = 0; i < vector_elements; i++) {
 	 ir_rvalue *op0 = get_element(op_var[0], i);
 
diff --git a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
index c055580..7ceca0e 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
@@ -864,6 +864,10 @@ fs_visitor::visit(ir_expression *ir)
    case ir_unop_find_lsb:
       emit(FBL(this->result, op[0]));
       break;
+   case ir_unop_saturate:
+      inst = emit(MOV(this->result, op[0]));
+      inst->saturate = true;
+      break;
    case ir_triop_bitfield_extract:
       /* Note that the instruction's argument order is reversed from GLSL
        * and the IR.