From a2ce52258696fb995a31af1eef7bffbef99f01e6 Mon Sep 17 00:00:00 2001
From: e2002e <yvain29@gmail.com>
Date: Mon, 1 Apr 2024 14:46:06 +0200
Subject: [PATCH] make iron independant of armory.

---
 Sources/iron/RenderPath.hx     | 56 +++++++++++++++++++++++++---------
 Sources/iron/Scene.hx          |  3 --
 Sources/iron/object/Clipmap.hx | 10 ++++++
 3 files changed, 51 insertions(+), 18 deletions(-)
 create mode 100644 Sources/iron/object/Clipmap.hx

diff --git a/Sources/iron/RenderPath.hx b/Sources/iron/RenderPath.hx
index 76e08321..17c41810 100644
--- a/Sources/iron/RenderPath.hx
+++ b/Sources/iron/RenderPath.hx
@@ -17,6 +17,7 @@ import iron.object.Object;
 import iron.object.LightObject;
 import iron.object.MeshObject;
 import iron.object.Uniforms;
+import iron.object.Clipmap;
 
 class RenderPath {
 
@@ -65,15 +66,39 @@ class RenderPath {
 	public var depthBuffers: Array<{name: String, format: String}> = [];
 	var additionalTargets: Array<kha.Canvas>;
 
-	#if rp_voxels
-	public var voxelized = 0;
-	public var onVoxelize: Void->Bool = null;
-	public function voxelize() { // Returns true if scene should be voxelized
-		if (onVoxelize != null) return onVoxelize();
-		#if arm_voxelgi_revox
-		return true;
+	#if (rp_voxels != "Off")
+	public static var pre_clear = true;
+	public static var res_pre_clear = true;
+	public static var clipmapLevel = 0;
+	public static var clipmaps:Array<Clipmap>;
+
+	public static inline function getVoxelRes(): Int {
+		#if (rp_voxelgi_resolution == 512)
+		return 512;
+		#elseif (rp_voxelgi_resolution == 256)
+		return 256;
+		#elseif (rp_voxelgi_resolution == 128)
+		return 128;
+		#elseif (rp_voxelgi_resolution == 64)
+		return 64;
+		#elseif (rp_voxelgi_resolution == 32)
+		return 32;
 		#else
-		return ++voxelized > 2 ? false : true;
+		return 0;
+		#end
+	}
+
+	public static inline function getVoxelResZ(): Float {
+		#if (rp_voxelgi_resolution_z == 1.0)
+		return 1.0;
+		#elseif (rp_voxelgi_resolution_z == 0.5)
+		return 0.5;
+		#elseif (rp_voxelgi_resolution_z == 0.25)
+		return 0.25;
+		#elseif (rp_voxelgi_resolution_z == 0.125)
+		return 0.125;
+		#else
+		return 0.0;
 		#end
 	}
 	#end
@@ -113,10 +138,10 @@ class RenderPath {
 		#end
 
 		#if (rp_voxels != "Off")
-		armory.renderpath.RenderPathCreator.clipmapLevel = (armory.renderpath.RenderPathCreator.clipmapLevel + 1) % Main.voxelgiClipmapCount;
-		var clipmap = armory.renderpath.RenderPathCreator.clipmaps[armory.renderpath.RenderPathCreator.clipmapLevel];
+		clipmapLevel = (clipmapLevel + 1) % Main.voxelgiClipmapCount;
+		var clipmap = clipmaps[clipmapLevel];
 
-		clipmap.voxelSize = armory.renderpath.RenderPathCreator.clipmaps[0].voxelSize * Math.pow(2.0, armory.renderpath.RenderPathCreator.clipmapLevel);
+		clipmap.voxelSize = clipmaps[0].voxelSize * Math.pow(2.0, clipmapLevel);
 
 		var texelSize = 2.0 * clipmap.voxelSize;
 		var camera = iron.Scene.active.camera;
@@ -131,11 +156,12 @@ class RenderPath {
 		clipmap.offset_prev.z = Std.int((clipmap.center.z - center.z) / texelSize);
 		clipmap.center = center;
 
-		var res = armory.renderpath.Inc.getVoxelRes();
-		var extents = new iron.math.Vec3(clipmap.voxelSize * res, clipmap.voxelSize * res, clipmap.voxelSize * res);
+		var res = getVoxelRes();
+		var resZ = getVoxelResZ();
+		var extents = new iron.math.Vec3(clipmap.voxelSize * res, clipmap.voxelSize * res, clipmap.voxelSize * resZ);
 		if (clipmap.extents.x != extents.x || clipmap.extents.y != extents.y || clipmap.extents.z != extents.z)
 		{
-			armory.renderpath.RenderPathCreator.pre_clear = true;
+			pre_clear = true;
 		}
 		clipmap.extents = extents;
 		#end
@@ -583,7 +609,7 @@ class RenderPath {
 		}
 
 		#if (rp_voxels != "Off")
-		armory.renderpath.RenderPathCreator.res_pre_clear = true;
+		res_pre_clear = true;
 		#end
 	}
 
diff --git a/Sources/iron/Scene.hx b/Sources/iron/Scene.hx
index 462de368..bd779f7f 100644
--- a/Sources/iron/Scene.hx
+++ b/Sources/iron/Scene.hx
@@ -213,9 +213,6 @@ class Scene {
 		Data.getSceneRaw(sceneName, function(format: TSceneFormat) {
 			Scene.create(format, function(o: Object) {
 				if (done != null) done(o);
-				#if rp_voxels // Revoxelize
-				RenderPath.active.voxelized = 0;
-				#end
 
 				#if (rp_background == "World")
 				if (removeWorldShader != null) {
diff --git a/Sources/iron/object/Clipmap.hx b/Sources/iron/object/Clipmap.hx
new file mode 100644
index 00000000..9632f39c
--- /dev/null
+++ b/Sources/iron/object/Clipmap.hx
@@ -0,0 +1,10 @@
+package iron.object;
+
+class Clipmap {
+	public var voxelSize = 0.125;
+	public var extents:iron.math.Vec3;
+	public var center:iron.math.Vec3;
+	public var offset_prev:iron.math.Vec3;
+
+	public function new() {};
+}