Make SliceEffect slice from the top, not the bottom.

[movit] / slice_effect.frag

diff --git a/slice_effect.frag b/slice_effect.frag
index 84165154b3f01b7e795fee7dc9b14e0ea71dd005..1598cb034565addd4289be93c4f119771ace62da 100644 (file)
--- a/slice_effect.frag
+++ b/slice_effect.frag
@@ -6,7 +6,7 @@ vec4 FUNCNAME(vec2 tc) {
        // DIRECTION_VERTICAL will be #defined to 1 if we are expanding vertically,
        // and 0 otherwise.
 #if DIRECTION_VERTICAL
-       float sliced_coord = tc.y;
+       float sliced_coord = 1.0 - tc.y;
 #else
        float sliced_coord = tc.x;
 #endif
@@ -19,7 +19,7 @@ vec4 FUNCNAME(vec2 tc) {
        float input_coord = slice_num * PREFIX(slice_num_to_input_coord) + slice_offset * PREFIX(slice_offset_to_input_coord);
 
 #if DIRECTION_VERTICAL
-       return INPUT(vec2(tc.x, input_coord));
+       return INPUT(vec2(tc.x, 1.0 - input_coord));
 #else
        return INPUT(vec2(input_coord, tc.y));
 #endif