Fix static array. Add constant buffers. Beginning of textures.

test/parse/texture_sample.golden

@@ -0,0 +1,21 @@
+(program	
+ (properties p
+  [(:= texture texture2D) 
+   (:= sampler sampler)])
+
+ (struct PS_Input
+  [(:= uv float2 (@uv)) 
+   (:= pos float4 (@position))])
+
+ (fun vertex vs_main -> PS_Input
+  [(:= pos float4 (@position)) 
+   (:= uv float2 (@uv))] 
+  (:= result PS_Input) 
+  (= result.uv uv) 
+  (= result.pos pos) 
+  (return result))
+
+ (fun pixel ps_main -> float4 (@target)
+  [(:= input PS_Input)] 
+  (:= color float4 (sample p.texture input.uv p.sampler)) 
+  (return color)))