void main() {
int x = 0;
int y = 0;
int z = 0;
if (sk_Caps.externalTextureSupport) x = 1;
if (sk_Caps.fbFetchSupport) y = 1;
if (sk_Caps.canUseAnyFunctionInShader) z = 1;
sk_FragColor.rgb = half3(x, y, z);
}