support for 2D shadow casters

Added support for 2D shadow casters.

*DANGER* Shaders in CanvasItem CHANGED, if you are using shader in a
CanvasItem and pull this, you will lose them. Shaders now work through a
2D material system similar to 3D. If you don't want to lose the 2D
shader code, save the shader as a .shd, then create a material in
CanvasItem and re-assign the shader.

2 files changed, 15 insertions, 0 deletions

diff --git a/core/io/resource_format_binary.cpp b/core/io/resource_format_binary.cpp
index e2371fe24f..ead6984650 100644
--- a/core/io/resource_format_binary.cpp
+++ b/core/io/resource_format_binary.cpp
@@ -1778,6 +1778,11 @@ Error ResourceFormatSaverBinaryInstance::save(const String &p_path,const RES& p_
 	f->store_32(VERSION_MINOR);
 	f->store_32(FORMAT_VERSION);
 
+	if (f->get_error()!=OK && f->get_error()!=ERR_FILE_EOF) {
+		f->close();
+		return ERR_CANT_CREATE;
+	}
+
 	//f->store_32(saved_resources.size()+external_resources.size()); // load steps -not needed
 	save_unicode_string(p_resource->get_type());
 	uint64_t md_at = f->get_pos();
@@ -1910,6 +1915,11 @@ Error ResourceFormatSaverBinaryInstance::save(const String &p_path,const RES& p_
 
 	f->store_buffer((const uint8_t*)"RSRC",4); //magic at end
 
+	if (f->get_error()!=OK && f->get_error()!=ERR_FILE_EOF) {
+		f->close();
+		return ERR_CANT_CREATE;
+	}
+
 	f->close();
 
 
diff --git a/core/io/resource_format_xml.cpp b/core/io/resource_format_xml.cpp
index 75384d4ab6..033b4d5e5a 100644
--- a/core/io/resource_format_xml.cpp
+++ b/core/io/resource_format_xml.cpp
@@ -2592,6 +2592,11 @@ Error ResourceFormatSaverXMLInstance::save(const String &p_path,const RES& p_res
 	}
 
 	exit_tag("resource_file");
+	if (f->get_error()!=OK && f->get_error()!=ERR_FILE_EOF) {
+		f->close();
+		return ERR_CANT_CREATE;
+	}
+
 	f->close();
 	//memdelete(f);