shadows basically works

shaders/ds_tonemap.glsl

@@ -22,4 +22,5 @@ void main(void) {
 	l = 1 - exp(-l*g);
 	res = max(vec3(0.f), res * l);
 	qgl_FragColor = vec4(res, dot(res, luma));
+	//qgl_FragColor = vec4(0.5);
 }