bgfx/examples/08-update/fs_update_cmp.sc

$input v_texcoord0

/*
 * Copyright 2011-2019 Branimir Karadzic. All rights reserved.
 * License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
 */

#include "../common/common.sh"

SAMPLER2D(s_texColor, 0);

void main()
{
	gl_FragColor = texture2D(s_texColor, v_texcoord0.xy*0.5+0.5);
}