mirror of
https://github.com/cyberboy666/r_e_c_u_r.git
synced 2025-12-05 16:00:06 +01:00
47 lines
834 B
GLSL
47 lines
834 B
GLSL
//1-input
|
|
#ifdef GL_ES
|
|
precision mediump float;
|
|
#endif
|
|
|
|
varying vec2 v_texcoord;
|
|
uniform sampler2D u_tex0;
|
|
uniform sampler2D u_tex1;
|
|
uniform vec2 u_resolution;
|
|
uniform float u_time;
|
|
uniform float u_x0;
|
|
uniform float u_x1;
|
|
uniform float u_x2;
|
|
uniform float u_x3;
|
|
|
|
vec4 zoom(sampler2D tex, vec2 pos){
|
|
vec4 texColourZoom;
|
|
vec2 center;
|
|
|
|
center = vec2(u_x2, u_x3);
|
|
|
|
pos.x = (pos.x - center.x)*(0.5 / u_x0) + center.x;
|
|
pos.y = (pos.y - center.y)*(0.5 / u_x0) + center.y;
|
|
if((pos.x < 0.0)||(pos.y < 0.0)||(pos.x > 1.0)||(pos.y > 1.0)){
|
|
texColourZoom = vec4(0.0);
|
|
}
|
|
else{
|
|
texColourZoom = texture2D(tex, pos);
|
|
}
|
|
return texColourZoom;
|
|
}
|
|
|
|
void main(){
|
|
|
|
vec2 pos = v_texcoord;
|
|
vec4 texColour0;
|
|
texColour0 = zoom(u_tex0, v_texcoord);
|
|
|
|
gl_FragColor = texColour0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|