stk-code_catmod/data/shaders/gaussian6v.frag

26 lines
657 B
GLSL

#version 330
uniform sampler2D tex;
uniform vec2 pixel;
// Gaussian separated blur with radius 6.
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, Y - 5.13333 * pixel.y)) * 0.00640869;
sum += texture(tex, vec2(X, Y - 3.26667 * pixel.y)) * 0.083313;
sum += texture(tex, vec2(X, Y - 1.4 * pixel.y)) * 0.305481;
sum += texture(tex, vec2(X, Y)) * 0.209473;
sum += texture(tex, vec2(X, Y + 1.4 * pixel.y)) * 0.305481;
sum += texture(tex, vec2(X, Y + 3.26667 * pixel.y)) * 0.083313;
sum += texture(tex, vec2(X, Y + 5.13333 * pixel.y)) * 0.00640869;
FragColor = sum;
}