uniform sampler2DRect particles0;
uniform sampler2DRect particles1;
uniform sampler2DRect particles2;

uniform sampler2DRect   u_depth;
uniform sampler2DRect   u_world;
uniform sampler2DRect   u_v4l2cam;
uniform sampler2DRect   imageTexture;

uniform vec3 uHottest0;
uniform vec3 uHottest1;
uniform vec3 uHottest3d0;
uniform vec3 uHottest3d1;

in vec2 texCoordVarying;
in vec3 vPos;
in float vTemperature;
in float vAge;

void main()
{
  vec3 remapedColor = texture(imageTexture, vec2(vTemperature*1600, 0.5)).xyz;
  float alpha = max(0, 1 - pow(vAge,4));
  
  vec4 color = vec4(remapedColor, alpha);

  if(length(vPos.x - uHottest3d1.x) < 500) {
    color = vec4(0,1,0,1);
  }
  fragColor = color;
}