X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=effect.h;h=9d95705f6a66ce344a54bd18eb83154018d85c35;hp=a7d426c723981bc11e10006fa9d44d6b3f5d8db5;hb=56ff92c5828a143595eeb7a1906418cc30668f9d;hpb=ecab6f3b08bc0a995dd96542758031f1ba2c6a27

diff --git a/effect.h b/effect.h
index a7d426c..9d95705 100644
--- a/effect.h
+++ b/effect.h
@@ -10,7 +10,7 @@
 // effect instance; use the macro PREFIX() around your identifiers to
 // automatically prepend that prefix.
 
-#include <GL/glew.h>
+#include <epoxy/gl.h>
 #include <assert.h>
 #include <stddef.h>
 #include <map>
@@ -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)
@@ -271,4 +282,6 @@ private:
 	std::map<std::string, float *> params_vec4;
 };
 
+}  // namespace movit
+
 #endif // !defined(_MOVIT_EFFECT_H)