mirror of
https://github.com/tanema/light_world.lua.git
synced 2024-10-16 21:04:17 +00:00
45be0c56fa
taking out unused variables and redundant code, also took out debug variables. also moved the shaders in to the lib folder for better portablility of the library
13 lines
530 B
GLSL
13 lines
530 B
GLSL
extern vec2 screen = vec2(800.0, 600.0);
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extern float steps = 2.0;
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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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for(int i = 1; i <= steps; i++) {
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col = col + Texel(texture, vec2(texture_coords.x, texture_coords.y - pSize.y * i));
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col = col + Texel(texture, vec2(texture_coords.x, texture_coords.y + pSize.y * i));
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}
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col = col / (steps * 2.0 + 1.0);
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return vec4(col.r, col.g, col.b, 1.0);
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} |