qt6windows7/tests/manual/qopenglwidget/dockedopenglwidget/vshader.glsl

uniform mat4 mvp_matrix;

attribute vec4 a_position;
attribute vec2 a_texcoord;

varying vec2 v_texcoord;

void main()
{
    gl_Position = mvp_matrix * a_position;
    v_texcoord = a_texcoord;
}