Merge remote branch 'origin/master' into glsl2

[mesa.git] / src / mesa / drivers / dri / i965 / brw_vs_emit.c

diff --git a/src/mesa/drivers/dri/i965/brw_vs_emit.c b/src/mesa/drivers/dri/i965/brw_vs_emit.c
index b6b558e9a69b68027c2b0b728199cf0d99a494a4..c1d6525e9b7f8944f43d7b6464d97041217d65d5 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_vs_emit.c
+++ b/src/mesa/drivers/dri/i965/brw_vs_emit.c
@@ -502,6 +502,23 @@ static void emit_cmp( struct brw_compile *p,
    brw_set_predicate_control(p, BRW_PREDICATE_NONE);
 }
 
+static void emit_sign(struct brw_vs_compile *c,
+                     struct brw_reg dst,
+                     struct brw_reg arg0)
+{
+   struct brw_compile *p = &c->func;
+
+   brw_MOV(p, dst, brw_imm_f(0));
+
+   brw_CMP(p, brw_null_reg(), BRW_CONDITIONAL_L, arg0, brw_imm_f(0));
+   brw_MOV(p, dst, brw_imm_f(-1.0));
+   brw_set_predicate_control(p, BRW_PREDICATE_NONE);
+
+   brw_CMP(p, brw_null_reg(), BRW_CONDITIONAL_G, arg0, brw_imm_f(0));
+   brw_MOV(p, dst, brw_imm_f(1.0));
+   brw_set_predicate_control(p, BRW_PREDICATE_NONE);
+}
+
 static void emit_max( struct brw_compile *p, 
                      struct brw_reg dst,
                      struct brw_reg arg0,
@@ -1732,6 +1749,9 @@ void brw_vs_emit(struct brw_vs_compile *c )
       case OPCODE_SLE:
          unalias2(c, dst, args[0], args[1], emit_sle);
          break;
+      case OPCODE_SSG:
+         unalias1(c, dst, args[0], emit_sign);
+         break;
       case OPCODE_SUB:
         brw_ADD(p, dst, args[0], negate(args[1]));
         break;