mirror of
https://github.com/tanema/light_world.lua.git
synced 2024-12-24 20:24:19 +00:00
23 lines
694 B
GLSL
23 lines
694 B
GLSL
extern vec3 lightPositionRange;
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extern vec3 lightColor;
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extern float smooth = 1.0;
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extern vec2 glow = vec2(0.95, 0.2);
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vec4 effect(vec4 color, Image texture, vec2 texture_coords, vec2 pixel_coords){
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vec4 pixel = Texel(texture, texture_coords);
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vec2 lightToPixel = pixel_coords - lightPositionRange.xy;
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float distance = length(lightToPixel);
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float att = 1 - distance / lightPositionRange.z;
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if (distance <= lightPositionRange.z) {
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if (glow.x < 1.0 && glow.y > 0.0) {
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pixel.rgb = lightColor * pow(att, smooth) + pow(smoothstep(glow.x, 1.0, att), smooth) * glow.y;
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} else {
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pixel.rgb = lightColor * pow(att, smooth);
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}
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} else {
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pixel.rgb = vec3(0, 0, 0);
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}
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return pixel;
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} |