From 5868754b013fa0579f0781bd8c1c5ba0fc9e784d Mon Sep 17 00:00:00 2001
From: Juan Linietsky <reduzio@gmail.com>
Date: Mon, 4 Dec 2017 16:54:17 -0300
Subject: Added a higher level wrapper for proxy texture

---
 scene/register_scene_types.cpp |  1 +
 scene/resources/texture.cpp    | 69 ++++++++++++++++++++++++++++++++++++++++++
 scene/resources/texture.h      | 27 +++++++++++++++++
 3 files changed, 97 insertions(+)

diff --git a/scene/register_scene_types.cpp b/scene/register_scene_types.cpp
index c99bc3c9ef..d6557f508e 100644
--- a/scene/register_scene_types.cpp
+++ b/scene/register_scene_types.cpp
@@ -529,6 +529,7 @@ void register_scene_types() {
 	ClassDB::register_class<LargeTexture>();
 	ClassDB::register_class<CurveTexture>();
 	ClassDB::register_class<GradientTexture>();
+	ClassDB::register_class<ProxyTexture>();
 	ClassDB::register_class<CubeMap>();
 	ClassDB::register_class<Animation>();
 	ClassDB::register_virtual_class<Font>();
diff --git a/scene/resources/texture.cpp b/scene/resources/texture.cpp
index 162edd0d1c..987d6c5f6a 100644
--- a/scene/resources/texture.cpp
+++ b/scene/resources/texture.cpp
@@ -1601,3 +1601,72 @@ int GradientTexture::get_width() const {
 Ref<Image> GradientTexture::get_data() const {
 	return VisualServer::get_singleton()->texture_get_data(texture);
 }
+
+//////////////////////////////////////
+
+void ProxyTexture::_bind_methods() {
+
+	ClassDB::bind_method(D_METHOD("set_base", "base"), &ProxyTexture::set_base);
+	ClassDB::bind_method(D_METHOD("get_base"), &ProxyTexture::get_base);
+
+	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "base", PROPERTY_HINT_RESOURCE_TYPE, "Texture"), "set_base", "get_base");
+}
+
+void ProxyTexture::set_base(const Ref<Texture> &p_texture) {
+
+	base = p_texture;
+	if (base.is_valid()) {
+		VS::get_singleton()->texture_set_proxy(proxy, base->get_rid());
+	} else {
+		VS::get_singleton()->texture_set_proxy(proxy, RID());
+	}
+}
+
+Ref<Texture> ProxyTexture::get_base() const {
+
+	return base;
+}
+
+int ProxyTexture::get_width() const {
+
+	if (base.is_valid())
+		return base->get_width();
+	return 1;
+}
+int ProxyTexture::get_height() const {
+
+	if (base.is_valid())
+		return base->get_height();
+	return 1;
+}
+RID ProxyTexture::get_rid() const {
+
+	return proxy;
+}
+
+bool ProxyTexture::has_alpha() const {
+
+	if (base.is_valid())
+		return base->has_alpha();
+	return false;
+}
+
+void ProxyTexture::set_flags(uint32_t p_flags) {
+}
+
+uint32_t ProxyTexture::get_flags() const {
+
+	if (base.is_valid())
+		return base->get_flags();
+	return 0;
+}
+
+ProxyTexture::ProxyTexture() {
+
+	proxy = VS::get_singleton()->texture_create();
+}
+
+ProxyTexture::~ProxyTexture() {
+
+	VS::get_singleton()->free(proxy);
+}
diff --git a/scene/resources/texture.h b/scene/resources/texture.h
index ee54156647..76c0195ef9 100644
--- a/scene/resources/texture.h
+++ b/scene/resources/texture.h
@@ -493,4 +493,31 @@ public:
 	virtual ~GradientTexture();
 };
 
+class ProxyTexture : public Texture {
+	GDCLASS(ProxyTexture, Texture)
+
+private:
+	RID proxy;
+	Ref<Texture> base;
+
+protected:
+	static void _bind_methods();
+
+public:
+	void set_base(const Ref<Texture> &p_texture);
+	Ref<Texture> get_base() const;
+
+	virtual int get_width() const;
+	virtual int get_height() const;
+	virtual RID get_rid() const;
+
+	virtual bool has_alpha() const;
+
+	virtual void set_flags(uint32_t p_flags);
+	virtual uint32_t get_flags() const;
+
+	ProxyTexture();
+	~ProxyTexture();
+};
+
 #endif
-- 
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