protot/3rdparty/bgfx/examples/common/imgui/vs_imgui_texture.sc

$input a_position, a_texcoord0, a_color0
$output v_texcoord0, v_color0

/*
 * Copyright 2011-2017 Branimir Karadzic. All rights reserved.
 * License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
 */

#include <bgfx_shader.sh>

void main()
{
	gl_Position = mul(u_viewProj, vec4(a_position.xy, 0.0, 1.0) );
	v_texcoord0 = a_texcoord0;
	v_color0 = a_color0;
}