mirror of
https://github.com/tanema/light_world.lua.git
synced 2024-12-24 20:24:19 +00:00
14 lines
780 B
Plaintext
14 lines
780 B
Plaintext
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extern vec2 screen = vec2(800.0, 600.0);
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vec4 effect(vec4 color, Image texture, vec2 texture_coords, vec2 pixel_coords) {
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vec2 pSize = vec2(1.0 / screen.x, 1.0 / screen.y);
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vec4 col = Texel(texture, texture_coords);
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col = col + Texel(texture, vec2(texture_coords.x, texture_coords.y - pSize.y));
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col = col + Texel(texture, vec2(texture_coords.x, texture_coords.y + pSize.y));
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col = col + Texel(texture, vec2(texture_coords.x, texture_coords.y - pSize.y * 2));
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col = col + Texel(texture, vec2(texture_coords.x, texture_coords.y + pSize.y * 2));
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col = col + Texel(texture, vec2(texture_coords.x, texture_coords.y - pSize.y * 3));
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col = col + Texel(texture, vec2(texture_coords.x, texture_coords.y + pSize.y * 3));
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col = col / 7.0;
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return vec4(col.r, col.g, col.b, 1.0);
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}
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