uniform sampler2D samp9;
out vec4 ocol0;
in vec2 uv0;
uniform vec4 resolution;
void main()
{
float4 c0 = texture(samp9, uv0);
float4 c1 = texture(samp9, uv0 + float2(5,5)*resolution.zw);
ocol0 = c0 - c1;
}