first commit

addons/zylann.hterrain/tools/texture_editor/display_alpha_slice.gdshader

@@ -0,0 +1,9 @@
+shader_type canvas_item;
+
+uniform sampler2DArray u_texture_array;
+uniform float u_index;
+
+void fragment() {
+	vec4 col = texture(u_texture_array, vec3(UV.x, UV.y, u_index));
+	COLOR = vec4(col.a, col.a, col.a, 1.0);
+}