Take the ambient occlusion into the lighting and add a probe of the cab

shaders/ogl46/cabprobe.vert

@@ -0,0 +1,21 @@
+#version 460 core
+#define STAGE_VERTEX 1
+// the occupied cab drawn into the six faces of its probe at once (gfx::cab_probe, cabprobe.geom picks the faces). the modelview
+// takes the cab model to the space of the probe: the axes of the model, the origin in the middle of the box of the cab
+layout(location = 0) in vec3 v_vert;
+layout(location = 1) in vec3 v_normal;
+layout(location = 2) in vec2 v_coord;
+
+layout(location = 20) out vec3 g_pos;
+layout(location = 21) out vec3 g_normal;
+layout(location = 18) out vec2 g_coord;
+
+#include "common.glsl"
+
+void main()
+{
+	g_pos = (effective_modelview() * vec4(v_vert, 1.0)).xyz;
+	g_normal = effective_modelviewnormal() * v_normal;
+	g_coord = v_coord;
+	gl_Position = vec4(g_pos, 1.0);
+}