From: Jordan Justen <jordan.l.justen@intel.com>
Date: Wed, 17 Apr 2013 23:17:50 +0000 (-0700)
Subject: i965: write layer if gl_Layer is used in VS
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=a16a2d7147865634d68151d681a399f669146ff1;p=mesa.git

i965: write layer if gl_Layer is used in VS

This is enabled by the AMD_vertex_shader_layer extension.

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
---

diff --git a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
index e5c1cece337..f14529af80f 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
@@ -2597,6 +2597,10 @@ vec4_visitor::emit_psiz_and_flags(struct brw_reg reg)
          emit(MOV(brw_writemask(reg, WRITEMASK_W),
                   src_reg(output_reg[VARYING_SLOT_PSIZ])));
       }
+      if (prog_data->vue_map.slots_valid & VARYING_BIT_LAYER) {
+         emit(MOV(retype(brw_writemask(reg, WRITEMASK_Y), BRW_REGISTER_TYPE_D),
+                  src_reg(output_reg[VARYING_SLOT_LAYER])));
+      }
    }
 }