X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=effect.h;h=c016a55070c2fb63585cd381c46c9e69a4de77a4;hp=d14176b2b1f4dc5f74f56388766cdfb2d5d14362;hb=3d1f6c11c53cd9d3d5c1fb60f4accf050b7f135e;hpb=a93b0c94f68bf897adfdca95b292494497fa4f7f

diff --git a/effect.h b/effect.h
index d14176b..c016a55 100644
--- a/effect.h
+++ b/effect.h
@@ -14,7 +14,9 @@
 #include <string>
 #include <vector>
 
-#include <GL/gl.h>
+#include <assert.h>
+
+#include "opengl.h"
 
 class EffectChain;
 
@@ -96,6 +98,21 @@ public:
 	// needs mipmaps, you will also get them).
 	virtual bool needs_mipmaps() const { return false; }
 
+	// Whether this effect wants to output to a different size than
+	// its input(s). If you set this to true, the output will be
+	// bounced to a texture (similarly to if the next effect set
+	// needs_texture_bounce()).
+	virtual bool changes_output_size() const { return false; }
+
+	// If changes_output_size() is true, you must implement this to tell
+	// the framework what output size you want.
+	//
+	// Note that it is explicitly allowed to change width and height
+	// from frame to frame; EffectChain will reallocate textures as needed.
+	virtual void get_output_size(unsigned *width, unsigned *height) const {
+		assert(false);
+	}
+
 	// How many inputs this effect will take (a fixed number).
 	// If you have only one input, it will be called INPUT() in GLSL;
 	// if you have several, they will be INPUT1(), INPUT2(), and so on.