stk-code_catmod/data/shaders/gaussian3h.frag

24 lines
519 B
GLSL

#version 330
uniform sampler2D tex;
uniform vec2 pixel;
// Gaussian separated blur with radius 3.
in vec2 uv;
out vec4 FragColor;
void main()
{
vec4 sum = vec4(0.0);
float X = uv.x;
float Y = uv.y;
sum += texture(tex, vec2(X - 3.0 * pixel.x, Y)) * 0.03125;
sum += texture(tex, vec2(X - 1.3333 * pixel.x, Y)) * 0.328125;
sum += texture(tex, vec2(X, Y)) * 0.273438;
sum += texture(tex, vec2(X + 1.3333 * pixel.x, Y)) * 0.328125;
sum += texture(tex, vec2(X + 3.0 * pixel.x, Y)) * 0.03125;
FragColor = sum;
}