Two free Godot 4 shaders you can paste in now: hit flash and dissolve

Updated 2026-10-17 · Roblox and game developers · by CyberMax

Short answer

In Godot 4, add a ShaderMaterial to a Sprite2D, create a new Shader and paste one of the shaders below. Animate the uniform from GDScript with material.set_shader_parameter("flash", value) or a Tween. Both work in Forward+, Mobile and Compatibility renderers.

Copy-paste code

hit_flash.gdshader and dissolve.gdshader (Godot 4)

// hit_flash.gdshader
shader_type canvas_item;
uniform float flash : hint_range(0.0, 1.0) = 0.0;
uniform vec4 flash_color : source_color = vec4(1.0);
void fragment() {
	vec4 tex = texture(TEXTURE, UV);
	COLOR = vec4(mix(tex.rgb, flash_color.rgb, flash), tex.a);
}

// dissolve.gdshader (assign any NoiseTexture2D to `noise`)
shader_type canvas_item;
uniform sampler2D noise;
uniform float amount : hint_range(0.0, 1.0) = 0.0;
uniform float edge : hint_range(0.0, 0.2) = 0.05;
uniform vec4 edge_color : source_color = vec4(1.0, 0.5, 0.1, 1.0);
void fragment() {
	vec4 tex = texture(TEXTURE, UV);
	float n = texture(noise, UV).r;
	if (n < amount) { discard; }
	float glow = 1.0 - smoothstep(amount, amount + edge, n);
	COLOR = vec4(mix(tex.rgb, edge_color.rgb, glow * step(0.001, amount)), tex.a);
}

# GDScript: flash for 0.1 s when hit
func hit() -> void:
	var t := create_tween()
	material.set_shader_parameter("flash", 1.0)
	t.tween_method(func(v): material.set_shader_parameter("flash", v), 1.0, 0.0, 0.1)

Good to know

If several sprites share the material, make it unique (Resource > Local To Scene) or every enemy flashes together.

The dissolve needs a noise texture: New NoiseTexture2D with a FastNoiseLite works.

Shadewren Shaders: 17 game shaders for Godot 4, tested

from $8

Shadewren is 17 tested Godot 4 shaders (outline, hit flash, dissolve, palette swap, glow, hologram, wind sway, 2D water, CRT, shockwave, toon, stylized 3D water and more), each rendered in Godot 4.4 before release.

Get Shadewren Shaders: $8 See what's inside Try 14 shaders live

Secure checkout · 14-day fix-or-refund if it doesn't work as described (terms)

Questions

Does this work in Godot 3?

Godot 3 uses hint_color instead of source_color and a slightly different syntax; these are written for Godot 4.

Can I use it in 3D?

These are canvas_item (2D) shaders; 3D needs a spatial shader.

Free: the Roblox Starter Kit

7 free Luau modules (damage, pets, shop formatting, admin audit log, tycoon guards and more) plus 3 free calculators, then 5 short emails with the scripting fixes we see go wrong most often.