Shadow 2D for Godot Engine

shadow2d.shader

/**
* Shadow 2D.
* License: CC0
* https://creativecommons.org/publicdomain/zero/1.0/
*/
shader_type canvas_item;
render_mode blend_mix;

uniform vec2 deform = vec2(2.0, 2.0);
uniform vec2 offset = vec2(0.0, 0.0);
uniform vec4 modulate : hint_color;

void fragment() {
	vec2 ps = TEXTURE_PIXEL_SIZE;
	vec2 uv = UV;
	float sizex = float(textureSize(TEXTURE,int(ps.x)).x);
	float sizey = float(textureSize(TEXTURE,int(ps.y)).y);
	uv.y+=offset.y*ps.y;
	uv.x+=offset.x*ps.x;
	float decalx=((uv.y-ps.x*sizex)*deform.x);
	float decaly=((uv.y-ps.y*sizey)*deform.y);
	uv.x += decalx;
	uv.y += decaly;
	vec4 shadow = vec4(modulate.rgb, texture(TEXTURE, uv).a * modulate.a);
	vec4 col = texture(TEXTURE, UV);
	COLOR = mix(shadow, col, col.a);
}

In godot 3.5 this shadow is cut to sprite image boundaries

In godot 3.5 this shadow is cut to sprite image boundaries

Hey, yes maybe the shader could be improved by resizing the vertex. I'll check to update it

How can this be rotated; could that be a parameter?

How can this be rotated; could that be a parameter?

Yes I made this shader a long time ago, I guess I'll need to rewrite it

Appreciate the code, thanks - currently trying to learn both shaders, and 2D shadows in Godot. And just FYI for anyone,
https://www.reddit.com/r/godot/comments/10i1x06/expected_value_hint_error_shaders_in_godot_4/

in Godot 4 hint_color has been renamed to source_color