nodes: minor overhaul to functionality

The nodes now have more control over how their accelerated shaders/sample
functions are run, as well as how items are popped off the value tables.
This allows for various optimizations that we didn't have access to before.

app/node/param.h

@@ -178,6 +178,24 @@ public:
      */
     kCombo = 0x8000,
 
+    /**
+     * Job type
+     *
+     * An internal type used to indicate to the renderer that an accelerated shader job needs to
+     * run. This value will usually be taken from a table and a kTexture value will be pushed to
+     * take its place.
+     */
+    kShaderJob = 0x10000,
+
+    /**
+     * Job type
+     *
+     * An internal type used to indicate to the renderer that an accelerated sample job needs to
+     * take place. This value will usually be taken from a table and a kSamples value will be
+     * pushed to take its place.
+     */
+    kSampleJob = 0x20000,
+
     /**
      ****************************** BROAD IDENTIFIERS ******************************
      */