11 lines
413 B
Plaintext
11 lines
413 B
Plaintext
shader_type canvas_item;
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uniform sampler2D screen_texture : hint_screen_texture, repeat_disable;
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uniform float saturation : hint_range(0.0, 1.0) = 1.0; // 0 = grayscale, 1 = full color
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void fragment() {
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vec4 tex = texture(screen_texture, SCREEN_UV);
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float gray = dot(tex.rgb, vec3(0.299, 0.587, 0.114)); // luminance weights
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vec3 result = mix(vec3(gray), tex.rgb, saturation);
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COLOR = vec4(result, tex.a);
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} |