VideoCore/Shader: Move per-batch ShaderEngine state into ShaderSetup

src/video_core/shader/shader.h

@@ -167,6 +167,12 @@ struct ShaderSetup {
 
     std::array<u32, 1024> program_code;
     std::array<u32, 1024> swizzle_data;
+
+    /// Data private to ShaderEngines
+    struct EngineData {
+        /// Used by the JIT, points to a compiled shader object.
+        const void* cached_shader = nullptr;
+    } engine_data;
 };
 
 class ShaderEngine {
@@ -177,13 +183,16 @@ public:
      * Performs any shader unit setup that only needs to happen once per shader (as opposed to once
      * per vertex, which would happen within the `Run` function).
      */
-    virtual void SetupBatch(const ShaderSetup* setup) = 0;
+    virtual void SetupBatch(ShaderSetup& setup) = 0;
 
     /**
-     * Runs the currently setup shader
-     * @param state Shader unit state, must be setup per shader and per shader unit
+     * Runs the currently setup shader.
+     *
+     * @param setup Shader engine state, must be setup with SetupBatch on each shader change.
+     * @param state Shader unit state, must be setup with input data before each shader invocation.
      */
-    virtual void Run(UnitState& state, unsigned int entry_point) const = 0;
+    virtual void Run(const ShaderSetup& setup, UnitState& state,
+                     unsigned int entry_point) const = 0;
 };
 
 // TODO(yuriks): Remove and make it non-global state somewhere