i915: Add support for OPCODE_DP2.

Fixes glsl-fs-dot-vec2.

diff --git a/src/mesa/drivers/dri/i915/i915_fragprog.c b/src/mesa/drivers/dri/i915/i915_fragprog.c
index f1505dc..2ba0d2c 100644 (file)
--- a/src/mesa/drivers/dri/i915/i915_fragprog.c
+++ b/src/mesa/drivers/dri/i915/i915_fragprog.c
@@ -472,6 +472,18 @@ upload_program(struct i915_fragment_program *p)
                         swizzle(tmp, X, X, X, X));
          break;
 
+      case OPCODE_DP2:
+         src0 = src_vector(p, &inst->SrcReg[0], program);
+         src1 = src_vector(p, &inst->SrcReg[1], program);
+        i915_emit_arith(p,
+                        A0_DP3,
+                         get_result_vector(p, inst),
+                         get_result_flags(inst), 0,
+                        swizzle(src0, X, Y, ZERO, ZERO),
+                        swizzle(src1, X, Y, ZERO, ZERO),
+                        0);
+         break;
+
       case OPCODE_DP3:
          EMIT_2ARG_ARITH(A0_DP3);
          break;