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authorTavian Barnes <tavianator@gmail.com>2011-12-01 15:24:25 -0500
committerTavian Barnes <tavianator@gmail.com>2011-12-01 15:24:25 -0500
commit0f05fc51962da8a7df269d51649cd8e1b683470c (patch)
treea8a487397d44e25efc2931733927aab7ce8f4d59 /libdimension/raytrace.c
parent3cff39f02c54eb0f06835e1e0b6a2f6f02d0b5cb (diff)
downloaddimension-0f05fc51962da8a7df269d51649cd8e1b683470c.tar.xz
Evaluate specular highlights before reflection.
Diffstat (limited to 'libdimension/raytrace.c')
-rw-r--r--libdimension/raytrace.c20
1 files changed, 11 insertions, 9 deletions
diff --git a/libdimension/raytrace.c b/libdimension/raytrace.c
index 3b83618..dd84a26 100644
--- a/libdimension/raytrace.c
+++ b/libdimension/raytrace.c
@@ -315,6 +315,16 @@ dmnsn_trace_lighting(dmnsn_rtstate *state)
dmnsn_color light_color;
if (dmnsn_trace_light_ray(state, *light, &light_color)) {
if (state->scene->quality & DMNSN_RENDER_FINISH) {
+ /* Get this light's specular contribution to the object */
+ dmnsn_color specular = dmnsn_black;
+ if (finish->specular) {
+ specular = finish->specular->specular_fn(
+ finish->specular, light_color, state->pigment, state->light,
+ state->intersection->normal, state->viewer
+ );
+ light_color = dmnsn_color_sub(light_color, specular);
+ }
+
/* Reflect the light */
const dmnsn_reflection *reflection = state->texture->finish.reflection;
if ((state->scene->quality & DMNSN_RENDER_REFLECTION) && reflection) {
@@ -325,7 +335,7 @@ dmnsn_trace_lighting(dmnsn_rtstate *state)
light_color = dmnsn_color_sub(light_color, reflected);
}
- /* Get this light's color contribution to the object */
+ /* Get this light's diffuse contribution to the object */
dmnsn_color diffuse = dmnsn_black;
if (finish->diffuse) {
diffuse = finish->diffuse->diffuse_fn(
@@ -334,14 +344,6 @@ dmnsn_trace_lighting(dmnsn_rtstate *state)
);
}
- dmnsn_color specular = dmnsn_black;
- if (finish->specular) {
- specular = finish->specular->specular_fn(
- finish->specular, light_color, state->pigment, state->light,
- state->intersection->normal, state->viewer
- );
- }
-
state->diffuse = dmnsn_color_add(diffuse, state->diffuse);
state->additional = dmnsn_color_add(specular, state->additional);
} else {