$input v_texcoord0 #include #include SAMPLER2D(s_texColor, 0); void main() { vec2 uv = vec2(v_texcoord0.x, 1.0f - v_texcoord0.y); gl_FragColor = vec4(1.0, 1.0, 1.0, texture2D(s_texColor, uv).a); }