python/regress: Add vertex shader EX2 test.

src/gallium/state_trackers/python/tests/regress/vertex-shader/vert-ex2.sh

@@ -0,0 +1,18 @@
+VERT1.1
+
+DCL IN[0], POSITION
+DCL IN[1], COLOR
+DCL OUT[0], POSITION
+DCL OUT[1], COLOR
+
+DCL TEMP[0..1]
+
+IMM FLT32 { 0.3, 0.3, 0.3, 1.0 }
+
+EX2 TEMP[0], IN[0]
+EX2 TEMP[1], IN[1].yyyy
+MUL TEMP[0], TEMP[0], IMM[0]
+MOV OUT[0], IN[0]
+MUL OUT[1], TEMP[0], TEMP[1]
+
+END

src/gallium/state_trackers/python/tests/regress/vertex-shader/vertex-shader.py

@@ -216,6 +216,7 @@ def main():
         'dp3',
         'dp4',
         'dst',
+        'ex2',
         'mov',
         'mul',
         'sub',