Merge remote branch 'origin/master' into glsl2

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

diff --git a/src/mesa/drivers/dri/i965/brw_wm_emit.c b/src/mesa/drivers/dri/i965/brw_wm_emit.c
index d9fa2e63354bb7f47813c8fb5acf07b8205d93af..0c625a4cd028fd7a85d5af7c6053f866688d89ed 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_wm_emit.c
+++ b/src/mesa/drivers/dri/i965/brw_wm_emit.c
@@ -668,6 +668,28 @@ void emit_cmp(struct brw_compile *p,
    }
 }
 
+void emit_sign(struct brw_compile *p,
+              const struct brw_reg *dst,
+              GLuint mask,
+              const struct brw_reg *arg0)
+{
+   GLuint i;
+
+   for (i = 0; i < 4; i++) {
+      if (mask & (1<<i)) {
+        brw_MOV(p, dst[i], brw_imm_f(0.0));
+
+        brw_CMP(p, brw_null_reg(), BRW_CONDITIONAL_L, arg0[i], brw_imm_f(0));
+        brw_MOV(p, dst[i], brw_imm_f(-1.0));
+        brw_set_predicate_control(p, BRW_PREDICATE_NONE);
+
+        brw_CMP(p, brw_null_reg(), BRW_CONDITIONAL_G, arg0[i], brw_imm_f(0));
+        brw_MOV(p, dst[i], brw_imm_f(1.0));
+        brw_set_predicate_control(p, BRW_PREDICATE_NONE);
+      }
+   }
+}
+
 void emit_max(struct brw_compile *p,
              const struct brw_reg *dst,
              GLuint mask,
@@ -709,6 +731,27 @@ void emit_min(struct brw_compile *p,
 }
 
 
+void emit_dp2(struct brw_compile *p,
+             const struct brw_reg *dst,
+             GLuint mask,
+             const struct brw_reg *arg0,
+             const struct brw_reg *arg1)
+{
+   int dst_chan = _mesa_ffs(mask & WRITEMASK_XYZW) - 1;
+
+   if (!(mask & WRITEMASK_XYZW))
+      return; /* Do not emit dead code */
+
+   assert(is_power_of_two(mask & WRITEMASK_XYZW));
+
+   brw_MUL(p, brw_null_reg(), arg0[0], arg1[0]);
+
+   brw_set_saturate(p, (mask & SATURATE) ? 1 : 0);
+   brw_MAC(p, dst[dst_chan], arg0[1], arg1[1]);
+   brw_set_saturate(p, 0);
+}
+
+
 void emit_dp3(struct brw_compile *p,
              const struct brw_reg *dst,
              GLuint mask,
@@ -1562,6 +1605,10 @@ void brw_wm_emit( struct brw_wm_compile *c )
         emit_ddxy(p, dst, dst_flags, GL_FALSE, args[0]);
         break;
 
+      case OPCODE_DP2:
+        emit_dp2(p, dst, dst_flags, args[0], args[1]);
+        break;
+
       case OPCODE_DP3:
         emit_dp3(p, dst, dst_flags, args[0], args[1]);
         break;
@@ -1673,6 +1720,10 @@ void brw_wm_emit( struct brw_wm_compile *c )
         emit_sne(p, dst, dst_flags, args[0], args[1]);
        break;
 
+      case OPCODE_SSG:
+        emit_sign(p, dst, dst_flags, args[0]);
+        break;
+
       case OPCODE_LIT:
         emit_lit(c, dst, dst_flags, args[0]);
         break;