43 lines
1.6 KiB
Plaintext
43 lines
1.6 KiB
Plaintext
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shader_type canvas_item;
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uniform bool center_enabled = true;
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uniform bool legs_enabled = true;
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uniform bool inverted = false;
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uniform int color_id = 0;
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uniform vec4 color_0 = vec4(0., 1, 0., 1.);
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uniform vec4 color_1 = vec4(1., 0., 0., 1.);
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uniform vec4 color_2 = vec4(0., 0., 1., 1.);
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uniform float center_radius = .002;
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uniform float width = .003;
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uniform float len = .03;
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uniform float spacing = .008;
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uniform float spread = 1.;
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uniform sampler2D SCREEN_TEXTURE : hint_screen_texture, filter_linear_mipmap_anisotropic;
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void fragment(){
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float a = SCREEN_PIXEL_SIZE.x / SCREEN_PIXEL_SIZE.y;
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vec2 UVa = vec2(UV.x / a, UV.y);
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vec2 center = vec2(.5 / a, .5);
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float point = step(distance(UVa, center), center_radius);
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float h = step(center.x - len - spacing*spread, UVa.x) - step(center.x - spacing*spread, UVa.x);
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h += step(center.x + spacing*spread, UVa.x) - step(center.x + len + spacing*spread, UVa.x);
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h *= step(center.y - width, UVa.y) - step(center.y + width, UVa.y);
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float v = step(center.y - len - spacing*spread, UVa.y) - step(center.y - spacing*spread, UVa.y);
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v += step(center.y + spacing*spread, UVa.y) - step(center.y + len + spacing*spread, UVa.y);
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v *= step(center.x - width, UVa.x) - step(center.x + width, UVa.x);
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float crosshair;
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crosshair = (h+v) * float(legs_enabled) + point * float(center_enabled);
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if(!inverted){
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COLOR = (color_0 * float(color_id == 0) + color_1 * float(color_id == 1) + color_2 * float(color_id == 2)) * crosshair;
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}else{
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COLOR = vec4((cos(textureLod(SCREEN_TEXTURE, SCREEN_UV, 0.0).rgb * 3.1415926534) + 1.)/2., 1.) * crosshair;
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}
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}
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