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Mosaic/Pixelization Effect Shader

This is a mosaic effect shader.

2D version mosaic effect is on here

Shader code
/*
	Mosaic shader for 3D spatial by Yui Kinomoto @arlez80
	3Dモデル用モザイクシェーダー by あるる(きのもと 結衣)

	size = tile size

	MIT License
*/
shader_type spatial;
render_mode unshaded;

uniform float size = 20.0;

void fragment( )
{
	vec2 p = floor( FRAGCOORD.xy / size ) * size;
	vec2 quat_x = vec2( size / 4.0, 0 );
	vec2 quat_y = vec2( 0, quat_x.x );
	ALBEDO = (
		texelFetch( SCREEN_TEXTURE, ivec2( p ), 0 ).xyz
	+	texelFetch( SCREEN_TEXTURE, ivec2( p + quat_x ), 0 ).xyz
	+	texelFetch( SCREEN_TEXTURE, ivec2( p + quat_x * 2.0 ), 0 ).xyz
	+	texelFetch( SCREEN_TEXTURE, ivec2( p + quat_x * 3.0 ), 0 ).xyz
	+	texelFetch( SCREEN_TEXTURE, ivec2( p + quat_y ), 0 ).xyz
	+	texelFetch( SCREEN_TEXTURE, ivec2( p + quat_y + quat_x ), 0 ).xyz
	+	texelFetch( SCREEN_TEXTURE, ivec2( p + quat_y + quat_x * 2.0 ), 0 ).xyz
	+	texelFetch( SCREEN_TEXTURE, ivec2( p + quat_y + quat_x * 3.0 ), 0 ).xyz
	+	texelFetch( SCREEN_TEXTURE, ivec2( p + quat_y * 2.0 ), 0 ).xyz
	+	texelFetch( SCREEN_TEXTURE, ivec2( p + quat_y * 2.0 + quat_x ), 0 ).xyz
	+	texelFetch( SCREEN_TEXTURE, ivec2( p + quat_y * 2.0 + quat_x * 2.0 ), 0 ).xyz
	+	texelFetch( SCREEN_TEXTURE, ivec2( p + quat_y * 2.0 + quat_x * 3.0 ), 0 ).xyz
	+	texelFetch( SCREEN_TEXTURE, ivec2( p + quat_y * 3.0 ), 0 ).xyz
	+	texelFetch( SCREEN_TEXTURE, ivec2( p + quat_y * 3.0 + quat_x ), 0 ).xyz
	+	texelFetch( SCREEN_TEXTURE, ivec2( p + quat_y * 3.0 + quat_x * 2.0 ), 0 ).xyz
	+	texelFetch( SCREEN_TEXTURE, ivec2( p + quat_y * 3.0 + quat_x * 3.0 ), 0 ).xyz
	) / 16.0;
}
Tags
mosaic, pixelization, Post Effect
The shader code and all code snippets in this post are under MIT license and can be used freely. Images and videos, and assets depicted in those, do not fall under this license. For more info, see our License terms.

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