diff options
Diffstat (limited to 'libdimension/raytrace.c')
| -rw-r--r-- | libdimension/raytrace.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/libdimension/raytrace.c b/libdimension/raytrace.c index 9cfb904..0165870 100644 --- a/libdimension/raytrace.c +++ b/libdimension/raytrace.c @@ -413,7 +413,7 @@ dmnsn_raytrace_lighting(const dmnsn_raytrace_state *state) dmnsn_color light_color; if (dmnsn_raytrace_light_ray(state, light, &light_color)) { if (state->scene->quality & DMNSN_RENDER_FINISH - && finish && finish->finish_fn) + && finish && (finish->diffuse_fn || finish->specular_fn)) { dmnsn_vector ray = dmnsn_vector_normalize( dmnsn_vector_sub(light->x0, x0) @@ -424,10 +424,19 @@ dmnsn_raytrace_lighting(const dmnsn_raytrace_state *state) ); /* Get this light's color contribution to the object */ - dmnsn_color contrib = (*finish->finish_fn)(finish, - light_color, state->pigment, - ray, normal, viewer); - illum = dmnsn_color_add(contrib, illum); + if (finish->diffuse_fn) { + dmnsn_color diffuse = (*finish->diffuse_fn)(finish, light_color, + state->pigment, + ray, normal); + illum = dmnsn_color_add(diffuse, illum); + } + + if (finish->specular_fn) { + dmnsn_color specular = (*finish->specular_fn)(finish, light_color, + state->pigment, + ray, normal, viewer); + illum = dmnsn_color_add(specular, illum); + } } else { illum = state->pigment; } |