X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=nageru%2Fscene.h;h=8cff06a8d3e53946af18ad4e41aedfe56e5236b0;hb=9ece26cae09110a3c6a0c74aefb2269a6dd9a7d9;hp=8db75540559cfa29bf45611319e19380bb56fc1c;hpb=7df979279388aeee8866d59a17a19b31b9c8ef07;p=nageru

diff --git a/nageru/scene.h b/nageru/scene.h
index 8db7554..8cff06a 100644
--- a/nageru/scene.h
+++ b/nageru/scene.h
@@ -131,6 +131,10 @@ struct Block {
 	std::map<std::string, std::array<float, 4>> vec4_parameters;
 
 	std::string declaration_point;  // For error messages.
+
+	// Only for AUTO_WHITE_BALANCE_EFFECT. Points to the parent block with is_input = true,
+	// so that we know which signal to get the white balance from.
+	const Block *root_input_block = nullptr;
 };
 
 int Block_display(lua_State* L);
@@ -162,7 +166,7 @@ private:
 
 	movit::Effect *instantiate_effects(const Block *block, size_t chain_idx, Instantiation *instantiation);
 	size_t compute_chain_number_for_block(size_t block_idx, const std::bitset<256> &disabled) const;
-	static void find_inputs_for_block(lua_State *L, Scene *scene, Block *block);
+	static void find_inputs_for_block(lua_State *L, Scene *scene, Block *block, int first_input_idx = 3);
 
 	// Find out which blocks (indexed by position in the “blocks” array),
 	// if any, are disabled in a given instantiation. A disabled block is
@@ -182,6 +186,11 @@ private:
 	// it returns true.
 	bool is_noncanonical_chain(size_t chain_idx) const;
 
+	// For a given block, find any parents it may have that are inputs.
+	// If there is more than one, throws an error. If there are zero,
+	// returns nullptr (should probably also be an error).
+	const Block *find_root_input_block(lua_State *L, const Block *block);
+
 public:
 	Scene(Theme *theme, float aspect_nom, float aspect_denom);
 	size_t compute_chain_number(bool is_main_chain) const;
@@ -192,6 +201,7 @@ public:
 	static int add_input(lua_State *L);
 	static int add_effect(lua_State *L);
 	static int add_optional_effect(lua_State *L);
+	static int add_auto_white_balance(lua_State *L);
 	static int finalize(lua_State *L);
 };