In resizing effects, add the notion of a “virtual output size”.

[movit] / blur_effect.cpp

diff --git a/blur_effect.cpp b/blur_effect.cpp
index 77238533e308054ccdd60475313d86b2e573bbd8..d62b0568f32b47b8f3c7f30d99db1ee07c4aa195 100644 (file)
--- a/blur_effect.cpp
+++ b/blur_effect.cpp
@@ -64,10 +64,14 @@ void BlurEffect::update_radius()
        bool ok = hpass->set_float("radius", adjusted_radius);
        ok |= hpass->set_int("width", mipmap_width);
        ok |= hpass->set_int("height", mipmap_height);
+       ok |= hpass->set_int("virtual_width", mipmap_width);
+       ok |= hpass->set_int("virtual_height", mipmap_height);
 
        ok |= vpass->set_float("radius", adjusted_radius);
        ok |= vpass->set_int("width", mipmap_width);
        ok |= vpass->set_int("height", mipmap_height);
+       ok |= vpass->set_int("virtual_width", input_width);
+       ok |= vpass->set_int("virtual_height", input_height);
 
        assert(ok);
 }
@@ -92,6 +96,8 @@ SingleBlurPassEffect::SingleBlurPassEffect(BlurEffect *parent)
        register_int("direction", (int *)&direction);
        register_int("width", &width);
        register_int("height", &height);
+       register_int("virtual_width", &virtual_width);
+       register_int("virtual_height", &virtual_height);
 }
 
 std::string SingleBlurPassEffect::output_fragment_shader()