From 44b71a22ff99cba159385be91fd3c3971024f7fa Mon Sep 17 00:00:00 2001
From: clayjohn <claynjohn@gmail.com>
Date: Sun, 3 Mar 2019 10:50:55 -0800
Subject: [PATCH] added bump_strength to noisetexture

---
 modules/opensimplex/noise_texture.cpp | 30 ++++++++++++++++++++++++++-
 modules/opensimplex/noise_texture.h   |  5 +++++
 2 files changed, 34 insertions(+), 1 deletion(-)

diff --git a/modules/opensimplex/noise_texture.cpp b/modules/opensimplex/noise_texture.cpp
index b8126ab775b..9a92c5fd6f9 100644
--- a/modules/opensimplex/noise_texture.cpp
+++ b/modules/opensimplex/noise_texture.cpp
@@ -41,6 +41,7 @@ NoiseTexture::NoiseTexture() {
 	size = Vector2i(512, 512);
 	seamless = false;
 	as_normalmap = false;
+	bump_strength = 1.0; //1.0 is a little low. Keep at 1.0 for compatibility for now. For 3.2 increase to 8.0.
 	flags = FLAGS_DEFAULT;
 
 	noise = Ref<OpenSimplexNoise>();
@@ -68,6 +69,9 @@ void NoiseTexture::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_as_normalmap", "as_normalmap"), &NoiseTexture::set_as_normalmap);
 	ClassDB::bind_method(D_METHOD("is_normalmap"), &NoiseTexture::is_normalmap);
 
+	ClassDB::bind_method(D_METHOD("set_bump_strength", "bump_strength"), &NoiseTexture::set_bump_strength);
+	ClassDB::bind_method(D_METHOD("get_bump_strength"), &NoiseTexture::get_bump_strength);
+
 	ClassDB::bind_method(D_METHOD("_update_texture"), &NoiseTexture::_update_texture);
 	ClassDB::bind_method(D_METHOD("_generate_texture"), &NoiseTexture::_generate_texture);
 	ClassDB::bind_method(D_METHOD("_thread_done", "image"), &NoiseTexture::_thread_done);
@@ -76,9 +80,19 @@ void NoiseTexture::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "height", PROPERTY_HINT_RANGE, "1,2048,1,or_greater"), "set_height", "get_height");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "seamless"), "set_seamless", "get_seamless");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "as_normalmap"), "set_as_normalmap", "is_normalmap");
+	ADD_PROPERTY(PropertyInfo(Variant::REAL, "bump_strength", PROPERTY_HINT_RANGE, "0,32,0.1,or_greater"), "set_bump_strength", "get_bump_strength");
 	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "noise", PROPERTY_HINT_RESOURCE_TYPE, "OpenSimplexNoise"), "set_noise", "get_noise");
 }
 
+void NoiseTexture::_validate_property(PropertyInfo &property) const {
+
+	if (property.name == "bump_strength") {
+		if (!as_normalmap) {
+			property.usage = PROPERTY_USAGE_NOEDITOR | PROPERTY_USAGE_INTERNAL;
+		}
+	}
+}
+
 void NoiseTexture::_set_texture_data(const Ref<Image> &p_image) {
 	data = p_image;
 	if (data.is_valid()) {
@@ -129,7 +143,7 @@ Ref<Image> NoiseTexture::_generate_texture() {
 	}
 
 	if (as_normalmap) {
-		image->bumpmap_to_normalmap();
+		image->bumpmap_to_normalmap(bump_strength);
 	}
 
 	return image;
@@ -202,12 +216,26 @@ void NoiseTexture::set_as_normalmap(bool p_as_normalmap) {
 	if (p_as_normalmap == as_normalmap) return;
 	as_normalmap = p_as_normalmap;
 	_queue_update();
+	_change_notify();
 }
 
 bool NoiseTexture::is_normalmap() {
 	return as_normalmap;
 }
 
+void NoiseTexture::set_bump_strength(float p_bump_strength) {
+
+	if (p_bump_strength == bump_strength) return;
+	bump_strength = p_bump_strength;
+	if (as_normalmap)
+		_queue_update();
+}
+
+float NoiseTexture::get_bump_strength() {
+
+	return bump_strength;
+}
+
 int NoiseTexture::get_width() const {
 
 	return size.x;
diff --git a/modules/opensimplex/noise_texture.h b/modules/opensimplex/noise_texture.h
index d1705f4070e..0d00ee154d4 100644
--- a/modules/opensimplex/noise_texture.h
+++ b/modules/opensimplex/noise_texture.h
@@ -58,6 +58,7 @@ private:
 	Vector2i size;
 	bool seamless;
 	bool as_normalmap;
+	float bump_strength;
 
 	void _thread_done(const Ref<Image> &p_image);
 	static void _thread_function(void *p_ud);
@@ -69,6 +70,7 @@ private:
 
 protected:
 	static void _bind_methods();
+	virtual void _validate_property(PropertyInfo &property) const;
 
 public:
 	void set_noise(Ref<OpenSimplexNoise> p_noise);
@@ -83,6 +85,9 @@ public:
 	void set_as_normalmap(bool p_seamless);
 	bool is_normalmap();
 
+	void set_bump_strength(float p_bump_strength);
+	float get_bump_strength();
+
 	int get_width() const;
 	int get_height() const;