From 752f60c4dcb63b98a23a0d38657f92157c7b14cc Mon Sep 17 00:00:00 2001
From: ninetailsrabbit <danieldigitalspace@proton.me>
Date: Mon, 28 Oct 2024 11:30:08 +0000
Subject: [PATCH] new method to remove childen with free() instead of
 queue_free() and new shader to mix albedo textures on terrain

---
 icon.svg.import                             | 13 +++----
 shaders/terrain/albedo_terrain_mix.gdshader | 38 +++++++++++++++++++++
 utilities/nodes/node_remover.gd             | 14 ++++++++
 3 files changed, 59 insertions(+), 6 deletions(-)
 create mode 100644 shaders/terrain/albedo_terrain_mix.gdshader

diff --git a/icon.svg.import b/icon.svg.import
index 8de5b3e..f80bbf5 100644
--- a/icon.svg.import
+++ b/icon.svg.import
@@ -3,25 +3,26 @@
 importer="texture"
 type="CompressedTexture2D"
 uid="uid://g1k1oqsoq1tp"
-path="res://.godot/imported/icon.svg-218a8f2b3041327d8a5756f3a245f83b.ctex"
+path.s3tc="res://.godot/imported/icon.svg-218a8f2b3041327d8a5756f3a245f83b.s3tc.ctex"
 metadata={
-"vram_texture": false
+"imported_formats": ["s3tc_bptc"],
+"vram_texture": true
 }
 
 [deps]
 
 source_file="res://icon.svg"
-dest_files=["res://.godot/imported/icon.svg-218a8f2b3041327d8a5756f3a245f83b.ctex"]
+dest_files=["res://.godot/imported/icon.svg-218a8f2b3041327d8a5756f3a245f83b.s3tc.ctex"]
 
 [params]
 
-compress/mode=0
+compress/mode=2
 compress/high_quality=false
 compress/lossy_quality=0.7
 compress/hdr_compression=1
 compress/normal_map=0
 compress/channel_pack=0
-mipmaps/generate=false
+mipmaps/generate=true
 mipmaps/limit=-1
 roughness/mode=0
 roughness/src_normal=""
@@ -31,7 +32,7 @@ process/normal_map_invert_y=false
 process/hdr_as_srgb=false
 process/hdr_clamp_exposure=false
 process/size_limit=0
-detect_3d/compress_to=1
+detect_3d/compress_to=0
 svg/scale=1.0
 editor/scale_with_editor_scale=false
 editor/convert_colors_with_editor_theme=false
diff --git a/shaders/terrain/albedo_terrain_mix.gdshader b/shaders/terrain/albedo_terrain_mix.gdshader
new file mode 100644
index 0000000..62c68e2
--- /dev/null
+++ b/shaders/terrain/albedo_terrain_mix.gdshader
@@ -0,0 +1,38 @@
+// https://godotshaders.com/shader/albedo-terrain-mix-shader/
+shader_type spatial;
+
+uniform sampler2D source_texture_mask : source_color;
+uniform sampler2D source_texture_black : source_color;
+uniform sampler2D source_texture_red : source_color;
+uniform sampler2D source_texture_green : source_color;
+uniform sampler2D source_texture_blue : source_color;
+
+uniform float uv_size : hint_range(0.01, 100.0, 0.01) = 1.0;
+
+void fragment() {
+
+vec2 UV_Scaled = UV * uv_size;
+
+// texture_rgbmask UV is not scaled.
+vec3 texture_rgbmask= texture(source_texture_mask, UV).rgb; 
+vec3 texture_black 	= texture(source_texture_black, UV_Scaled).rgb;
+vec3 texture_red 	= texture(source_texture_red, UV_Scaled).rgb;
+vec3 texture_green 	= texture(source_texture_green, UV_Scaled).rgb;
+vec3 texture_blue 	= texture(source_texture_blue, UV_Scaled).rgb;
+
+float summed_texture_channels = (
+	texture_rgbmask.r + 
+	texture_rgbmask.g + 
+	texture_rgbmask.b);
+
+vec3 mixed_terrain = clamp(
+		(	texture_rgbmask.r * texture_red +
+			texture_rgbmask.g * texture_green +
+			texture_rgbmask.b * texture_blue) /
+			summed_texture_channels,
+			vec3(0.0), vec3(1.0) // Clamp min, max values.
+			);
+
+ALBEDO = mix(mixed_terrain,texture_black,1.0 - summed_texture_channels);
+
+} // Fragment end
\ No newline at end of file
diff --git a/utilities/nodes/node_remover.gd b/utilities/nodes/node_remover.gd
index f9c6816..739b3f3 100644
--- a/utilities/nodes/node_remover.gd
+++ b/utilities/nodes/node_remover.gd
@@ -36,3 +36,17 @@ static func queue_free_children(node: Node, except: Array = []) -> void:
 		remove(child)
 	
 	except.clear()
+
+
+## Exceptions are passed as [Area3D.new().get_class)
+static func free_children(node: Node, except: Array = []) -> void:
+	if node.get_child_count() == 0:
+		return
+
+	var childrens = node.get_children().filter(func(child): return not child.get_class() in except)
+	childrens.reverse()
+	
+	for child in childrens.filter(func(_node: Node): return is_node_valid(_node)):
+		child.free()
+	
+	except.clear()