X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=effect.h;h=d0ed95b7665b4e36b864bee4ace5508e8f58d68f;hp=ef58392715ea7ade816bfc440c1eec65bd3ee410;hb=0490917aca6b8e6057c04c8becc820a8e849a801;hpb=e655afd53f2e56938bd4e7f72640eff56ef4a1ee

diff --git a/effect.h b/effect.h
index ef58392..d0ed95b 100644
--- a/effect.h
+++ b/effect.h
@@ -17,6 +17,7 @@
 #include <assert.h>
 
 #include "opengl.h"
+#include "util.h"
 
 class EffectChain;
 class Node;
@@ -45,9 +46,12 @@ void set_uniform_float_array(GLuint glsl_program_num, const std::string &prefix,
 void set_uniform_vec2(GLuint glsl_program_num, const std::string &prefix, const std::string &key, const float *values);
 void set_uniform_vec3(GLuint glsl_program_num, const std::string &prefix, const std::string &key, const float *values);
 void set_uniform_vec4_array(GLuint glsl_program_num, const std::string &prefix, const std::string &key, const float *values, size_t num_values);
+void set_uniform_mat3(GLuint glsl_program_num, const std::string &prefix, const std::string &key, const Matrix3x3 matrix);
 
 class Effect {
 public:
+	virtual ~Effect() {}
+
 	// An identifier for this type of effect, mostly used for debug output
 	// (but some special names, like "ColorSpaceConversionEffect", holds special
 	// meaning). Same as the class name is fine.
@@ -87,7 +91,7 @@ public:
 	//  2. You rely on previous effects, possibly including gamma
 	//     expansion, to happen pre-filtering instead of post-filtering.
 	//     (This is only relevant if you actually need the filtering; if
-	//     you sample on whole input pixels only, it makes no difference.)
+	//     you sample 1:1 between pixels and texels, it makes no difference.)
 	//
 	// Note that in some cases, you might get post-filtered gamma expansion
 	// even when setting this option. More specifically, if you are the
@@ -105,9 +109,9 @@ public:
 	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()).
+	// its input(s) (see inform_input_size(), below). 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
@@ -119,6 +123,18 @@ public:
 		assert(false);
 	}
 
+	// Tells the effect the resolution of each of its input.
+	// This will be called every frame, and always before get_output_size(),
+	// so you can change your output size based on the input if so desired.
+	//
+	// Note that in some cases, an input might not have a single well-defined
+	// resolution (for instance if you fade between two inputs with
+	// different resolutions). In this case, you will get width=0 and height=0
+	// for that input. If you cannot handle that, you will need to set
+	// needs_texture_bounce() to true, which will force a render to a single
+	// given resolution before you get the input.
+	virtual void inform_input_size(unsigned input_num, unsigned width, unsigned height) {}
+
 	// 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.