minecraft-assets/assets/minecraft/shaders/core/blit_screen.fsh

#version 150

uniform sampler2D DiffuseSampler;

uniform vec4 ColorModulator;

in vec2 texCoord;
in vec4 vertexColor;

out vec4 fragColor;

void main() {
    vec4 color = texture(DiffuseSampler, texCoord) * vertexColor;

    // blit final output of compositor into displayed back buffer
    fragColor = color * ColorModulator;
}