Pixel-Composer/shaders/sh_pb_blob/sh_pb_blob.fsh
2023-07-21 12:40:20 +02:00

18 lines
436 B
GLSL

//
// Simple passthrough fragment shader
//
varying vec2 v_vTexcoord;
varying vec4 v_vColour;
uniform float btop;
uniform float bbot;
void main() {
vec2 pos = v_vTexcoord.x > 0.5? vec2(v_vTexcoord.x - 0.5, v_vTexcoord.y) : vec2(0.5 - v_vTexcoord.x, v_vTexcoord.y);
float _t = (1. - pos.y);
float _x = 3. * (btop * _t * (1. - _t) * (1. - _t) + bbot * _t * _t * (1. - _t));
gl_FragColor = pos.x < _x? v_vColour : vec4(0.);
}