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Added shaders

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MaddoScientisto 2025-12-26 23:05:59 +01:00
commit 7414ff51c8
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Shaders/GodotRetro/Screen Shaders/Aditional Shaders/Sharpness.gdshader Normal file
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//SHADER ORIGINALY CREADED BY "Nihilistic_Furry" FROM SHADERTOY
//MODIFIED AND PORTED TO GODOT BY AHOPNESS (@ahopness)
//LICENSE : CC0
//COMATIBLE WITH : GLES2, GLES3, WEBGL
//SHADERTOY LINK : https://www.shadertoy.com/view/wsK3Wt
shader_type canvas_item;
uniform sampler2D SCREEN_TEXTURE : hint_screen_texture, filter_linear_mipmap;
uniform float sharpen_amount :hint_range(0,4) = 1.0;
vec4 sharpenMask (sampler2D st, vec2 fc, vec2 sps){
// Sharpen detection matrix [0,1,0],[1,-4,1],[0,1,0]
// Colors
vec4 up = texture (st, (fc + vec2 (0, 1))/sps);
vec4 left = texture (st, (fc + vec2 (-1, 0))/sps);
vec4 center = texture (st, fc/sps);
vec4 right = texture (st, (fc + vec2 (1, 0))/sps);
vec4 down = texture (st, (fc + vec2 (0, -1))/sps);
// Return edge detection
return (1.0 + 4.0*sharpen_amount)*center -sharpen_amount*(up + left + right + down);
}
void fragment(){
// Detect edges and output to screen
COLOR = sharpenMask (SCREEN_TEXTURE, FRAGCOORD.xy, 1.0 / SCREEN_PIXEL_SIZE);
}