stk-code_catmod/data/shaders/gaussian6h.frag
2014-01-19 18:53:35 +01:00

25 lines
640 B
GLSL

#version 130
uniform sampler2D tex;
uniform vec2 pixel;
// Gaussian separated blur with radius 6.
in vec2 uv;
void main()
{
vec4 sum = vec4(0.0);
float X = uv.x;
float Y = uv.y;
sum += texture(tex, vec2(X - 5.13333 * pixel.x, Y)) * 0.00640869;
sum += texture(tex, vec2(X - 3.26667 * pixel.x, Y)) * 0.083313;
sum += texture(tex, vec2(X - 1.4 * pixel.x, Y)) * 0.305481;
sum += texture(tex, vec2(X, Y)) * 0.209473;
sum += texture(tex, vec2(X + 1.4 * pixel.x, Y)) * 0.305481;
sum += texture(tex, vec2(X + 3.26667 * pixel.x, Y)) * 0.083313;
sum += texture(tex, vec2(X + 5.13333 * pixel.x, Y)) * 0.00640869;
gl_FragColor = sum;
}