Compositor: Full frame input nodes

Adds full frame implementation to "Bokeh Image" node, "Track Position"
node, `SetVectorOperation` and `MovieClipAttribute`.
The other nodes in "Input" submenu are implemented separately.

`MovieClipAttribute` needs resolution to calculate its constant value, it can't be constant folded,
which requires it to be a `ConstantOperation`. Now `ConstantOperation` contemplate this case
and any operation that is always constant without depending on inputs should implement it.
If in the future an operation needs to get an input constant element during
`determineResolution` it must first determine its input resolution.

The nodes have no functional changes.

Reviewed By: jbakker

Differential Revision: https://developer.blender.org/D12090

1 files changed, 14 insertions, 2 deletions

diff --git a/source/blender/compositor/operations/COM_ConstantOperation.h b/source/blender/compositor/operations/COM_ConstantOperation.h
index 2709efeebd8..31b8d30254b 100644
--- a/source/blender/compositor/operations/COM_ConstantOperation.h
+++ b/source/blender/compositor/operations/COM_ConstantOperation.h
@@ -22,15 +22,27 @@
 
 namespace blender::compositor {
 
+/* TODO(manzanilla): After removing tiled implementation, implement a default #determineResolution
+ * for all constant operations and make all initialization and deinitilization methods final. */
 /**
- * Base class for primitive constant operations (Color/Vector/Value). The rest of operations that
- * can be constant are evaluated into primitives during constant folding.
+ * Base class for operations that are always constant. Operations that can be constant only when
+ * all their inputs are so, are evaluated into primitive constants (Color/Vector/Value) during
+ * constant folding.
  */
 class ConstantOperation : public NodeOperation {
+ protected:
+  bool needs_resolution_to_get_constant_;
+
  public:
   ConstantOperation();
 
+  /** May require resolution to be already determined. */
   virtual const float *get_constant_elem() = 0;
+  bool can_get_constant_elem() const;
+
+  void update_memory_buffer(MemoryBuffer *output,
+                            const rcti &area,
+                            Span<MemoryBuffer *> inputs) final;
 };
 
 }  // namespace blender::compositor