mirror of
https://github.com/DerKoun/bsnes-hd.git
synced 2025-04-02 10:52:49 -04:00
32 lines
No EOL
606 B
GLSL
32 lines
No EOL
606 B
GLSL
#version 150
|
|
|
|
uniform sampler2D source[];
|
|
uniform vec4 sourceSize[];
|
|
|
|
in Vertex {
|
|
vec2 vTexCoord;
|
|
};
|
|
|
|
out vec4 FragColor;
|
|
|
|
// Higher value, more centered glow.
|
|
// Lower values might need more taps.
|
|
#define GLOW_FALLOFF 0.35
|
|
#define TAPS 4
|
|
|
|
#define kernel(x) exp(-GLOW_FALLOFF * (x) * (x))
|
|
|
|
void main() {
|
|
vec3 col = vec3(0.0);
|
|
float dy = sourceSize[0].w;
|
|
|
|
float k_total = 0.0;
|
|
for (int i = -TAPS; i <= TAPS; i++)
|
|
{
|
|
float k = kernel(i);
|
|
k_total += k;
|
|
col += k * texture(source[0], vTexCoord + vec2(0.0, float(i) * dy)).rgb;
|
|
}
|
|
|
|
FragColor = vec4(col / k_total, 1.0);
|
|
} |