32 lines
984 B
GLSL
32 lines
984 B
GLSL
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#version 330 core
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out vec4 FragColor;
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in vec2 TexCoords;
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uniform sampler2D image;
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uniform bool horizontal;
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uniform float weight[5] = float[] (0.227027, 0.1945946, 0.1216216, 0.054054, 0.016216);
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void main()
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{
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vec2 tex_offset = 1.0 / textureSize(image, 0); // gets size of single texel
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vec3 result = texture(image, TexCoords).rgb * weight[0]; // current fragment's contribution
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if(horizontal)
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{
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for(int i = 1; i < 5; ++i)
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{
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result += texture(image, TexCoords + vec2(tex_offset.x * i, 0.0)).rgb * weight[i];
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result += texture(image, TexCoords - vec2(tex_offset.x * i, 0.0)).rgb * weight[i];
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}
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}
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else
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{
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for(int i = 1; i < 5; ++i)
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{
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result += texture(image, TexCoords + vec2(0.0, tex_offset.y * i)).rgb * weight[i];
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result += texture(image, TexCoords - vec2(0.0, tex_offset.y * i)).rgb * weight[i];
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}
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}
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FragColor = vec4(result, 1.0);
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}
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