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Commit d5b1cda9 authored by Martin Storsjo's avatar Martin Storsjo
Browse files

libagl: Transform the vertex if using eye space lighting with point lights 

This fixes lighting when using point lights, when eye space
lighting is used (which is the default).

Change-Id: I0cd0d2329893d6b5f8af3b1e595274c2076fc322
parent db1597a9

opengl/libagl/light.cpp

+7 −0
Original line number Diff line number Diff line
@@ -381,7 +381,14 @@ void lightVertex(ogles_context_t* c, vertex_t* v) 
            // compute vertex-to-light vector

            if (ggl_unlikely(l.position.w)) {

                // lightPos/1.0 - vertex/vertex.w == lightPos*vertex.w - vertex

#if !OBJECT_SPACE_LIGHTING

                vec4_t o;

                const transform_t& mv = c->transforms.modelview.transform;

                mv.point4(&mv, &o, &v->obj);

                vss3(d.v, l.objPosition.v, o.w, o.v);

#else

                vss3(d.v, l.objPosition.v, v->obj.w, v->obj.v);

#endif

                sqDist = dot3(d.v, d.v);

                vscale3(d.v, d.v, gglSqrtRecipx(sqDist));

            } else {