X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=effect.h;h=14cbe301fa08d55154e8cd1b1e149fce84c6f9e2;hp=4f740f3cec0015910b4977642b1467570751c5e6;hb=3ccf5fb197c9a72545affc0b7286349d5603b72e;hpb=6602e2b9d5e5a44c0f075fe083ecc26feb10c173

diff --git a/effect.h b/effect.h
index 4f740f3..14cbe30 100644
--- a/effect.h
+++ b/effect.h
@@ -18,6 +18,8 @@
 
 #include "defs.h"
 
+namespace movit {
+
 class EffectChain;
 class Node;
 
@@ -165,6 +167,15 @@ public:
 	// next effect set needs_texture_bounce()).
 	virtual bool changes_output_size() const { return false; }
 
+	// Whether this effect is effectively sampling from a a single texture.
+	// If so, it will override needs_texture_bounce(); however, there are also
+	// two demands it needs to fulfill:
+	//
+	//  1. It needs to be an Input, ie. num_inputs() == 0.
+	//  2. It needs to allocate exactly one sampler in set_gl_state(),
+	//     and allow dependent effects to change that sampler state.
+	virtual bool is_single_texture() const { return false; }
+
 	// If changes_output_size() is true, you must implement this to tell
 	// the framework what output size you want. Also, you can set a
 	// virtual width/height, which is the size the next effect (if any)
@@ -196,6 +207,12 @@ public:
 	// if you have several, they will be INPUT1(), INPUT2(), and so on.
 	virtual unsigned num_inputs() const { return 1; }
 
+	// Inform the effect that it has been just added to the EffectChain.
+	// The primary use for this is to store the ResourcePool uesd by
+	// the chain; for modifications to it, rewrite_graph() below
+	// is probably a better fit.
+	virtual void inform_added(EffectChain *chain) {}
+
 	// Let the effect rewrite the effect chain as it sees fit.
 	// Most effects won't need to do this, but this is very useful
 	// if you have an effect that consists of multiple sub-effects
@@ -265,4 +282,6 @@ private:
 	std::map<std::string, float *> params_vec4;
 };
 
+}  // namespace movit
+
 #endif // !defined(_MOVIT_EFFECT_H)