#version 330
uniform sampler2D texY;
uniform sampler2D texU;
uniform sampler2D texV;


in vec2 ftexcoord;
layout(location = 0) out vec4 rgbColour;
void main()
{
    float y;
    float cb;
    float cr;

    vec2 txc = gl_FragCoord.xy;
    ivec2 texSize  = textureSize(texY, 0);
    ivec2 texSizeB  = textureSize(texY, 0);
    vec2 texOffset = 1 / vec2(texSize.xy);


    y = texture(texY, ftexcoord).r;
    cb = texture(texU, ftexcoord).r;
    cr = texture(texV, ftexcoord).r;


    rgbColour.r =  y;
    rgbColour.g = cb;
    rgbColour.b =  cr;
    rgbColour.a = 1.0;
}