vhs effect
efeito vhs
Shader code
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m_Name: VHSEffect
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m_ShaderKeywords:
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- _ColorBleedAmount: 1.15
- _ColorBleedIterations: 10
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- _Cutoff: 0.5
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- _DstBlend: 0
- _GlossMapScale: 1
- _Glossiness: 0.5
- _GlossyReflections: 1
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this is a unity shader, not godot!!! here’s a quick copilot rewrite:
shader_type canvas_item;
uniform sampler2D SCREEN_TEXTURE : hint_screen_texture, filter_linear_mipmap;
uniform sampler2D noise_texture;
uniform float chromatic_aberration = 4.32;
uniform float lens_distortion = 1.12;
uniform float line_amount = 200.0;
uniform float lines_speed = 1.0;
uniform float lines_displacement = 0.64;
uniform float sine_lines_amount = 14.9;
uniform float sine_lines_speed = 20.0;
uniform float sine_lines_displacement = 10.5;
uniform float sine_lines_threshold = 0.055;
uniform float contrast = 0.924;
uniform float noise_strength = 0.15;
void fragment() {
vec2 uv = SCREEN_UV;
// Lens distortion
vec2 center = vec2(0.5);
vec2 to_center = uv – center;
float dist = length(to_center);
uv += to_center * dist * lens_distortion * 0.01;
// Sine wave scanline distortion
float sine_wave = sin(uv.y * sine_lines_amount + TIME * sine_lines_speed);
if (abs(sine_wave) < sine_lines_threshold) {
uv.x += sine_wave * sine_lines_displacement * 0.001;
}
// Horizontal flicker lines
float line_offset = sin(uv.y * line_amount + TIME * lines_speed) * lines_displacement * 0.001;
uv.x += line_offset;
// Chromatic aberration
vec4 col;
col.r = texture(SCREEN_TEXTURE, uv + vec2(chromatic_aberration * 0.001, 0.0)).r;
col.g = texture(SCREEN_TEXTURE, uv).g;
col.b = texture(SCREEN_TEXTURE, uv – vec2(chromatic_aberration * 0.001, 0.0)).b;
col.a = 1.0;
// Add noise flicker
vec2 noise_uv = vec2(uv.x, uv.y * 20.0 + TIME * 10.0); // scroll vertically
float noise = texture(noise_texture, noise_uv).r;
col.rgb += noise * noise_strength;
// Contrast adjustment
col.rgb = (col.rgb – 0.5) * contrast + 0.5;
COLOR = col;
}