refactor: not overlaping keyboard and midi

default/frag7.glsl

@@ -16,11 +16,11 @@ uniform int iDemo;
 uniform sampler2D iTex9;
 uniform sampler2D iTex10;
 uniform int iSeed7;
-uniform vec3 iMidi3_1[2];
+uniform vec3 iGroup3_1[2];
 
 void main() {
-    float mix_value = magic(iMidi3_1[1].xy, vec3(1, 0, 0), iSeed7);
-    bool mix_type = magic_trigger(vec3(iMidi3_1[0].x, 0, 0), iSeed7 + 10);
+    float mix_value = magic(iGroup3_1[1].xy, vec3(1, 0, 0), iSeed7);
+    bool mix_type = magic_trigger(vec3(iGroup3_1[0].x, 0, 0), iSeed7 + 10);
 
     vec4 color_a = texture(iTex9, vUV);
     vec4 color_b = texture(iTex10, vUV);