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Eevee: Shadows: Perf: Do not update shadows that are not inside the view.

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This commit is contained in:
Clément Foucault
2018-05-03 15:44:19 +02:00
parent ffca77814e
commit a06b0d29aa
1 changed files with 31 additions and 3 deletions
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34
source/blender/draw/engines/eevee/eevee_lights.c
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@@ -726,8 +726,10 @@ static void eevee_shadow_cascade_setup(Object *ob, EEVEE_LampsInfo *linfo, EEVEE
/* obmat = Object Space > World Space */
/* viewmat = World Space > View Space */
float (*viewmat)[4] = sh_data->viewmat;
invert_m4_m4(viewmat, ob->obmat);
normalize_m4(viewmat);
#if 0 /* done at culling time */
normalize_m4_m4(viewmat, ob->obmat);
#endif
invert_m4(viewmat);
invert_m4_m4(sh_data->viewinv, viewmat);
/* The technique consists into splitting
@@ -993,6 +995,28 @@ void EEVEE_draw_shadows(EEVEE_ViewLayerData *sldata, EEVEE_PassList *psl)
DRWMatrixState saved_mats;
/* Precompute all shadow/view test before rendering and trashing the culling cache. */
bool cube_visible[MAX_SHADOW_CUBE];
for (i = 0; (ob = linfo->shadow_cube_ref[i]) && (i < MAX_SHADOW_CUBE); i++) {
Lamp *la = (Lamp *)ob->data;
BoundSphere bsphere = {
.center = {ob->obmat[3][0], ob->obmat[3][1], ob->obmat[3][2]},
.radius = la->dist
};
cube_visible[i] = DRW_culling_sphere_test(&bsphere);
}
bool cascade_visible[MAX_SHADOW_CASCADE];
for (i = 0; (ob = linfo->shadow_cascade_ref[i]) && (i < MAX_SHADOW_CASCADE); i++) {
EEVEE_LampEngineData *led = EEVEE_lamp_data_get(ob);
EEVEE_ShadowCascadeData *sh_data = &led->data.scad;
float plane[4];
normalize_m4_m4(sh_data->viewmat, ob->obmat);
plane_from_point_normal_v3(plane, sh_data->viewmat[3], sh_data->viewmat[2]);
/* TODO: check against near/far instead of "local Z = 0" plane.
* Or even the cascades AABB. */
cascade_visible[i] = DRW_culling_plane_test(plane);
}
/* We need to save the Matrices before overidding them */
DRW_viewport_matrix_get_all(&saved_mats);
@@ -1003,7 +1027,7 @@ void EEVEE_draw_shadows(EEVEE_ViewLayerData *sldata, EEVEE_PassList *psl)
EEVEE_LampEngineData *led = EEVEE_lamp_data_ensure(ob);
Lamp *la = (Lamp *)ob->data;
if (!led->need_update) {
if (!led->need_update || !cube_visible[i]) {
continue;
}
@@ -1099,6 +1123,10 @@ void EEVEE_draw_shadows(EEVEE_ViewLayerData *sldata, EEVEE_PassList *psl)
/* Cascaded Shadow Maps */
DRW_stats_group_start("Cascaded Shadow Maps");
for (i = 0; (ob = linfo->shadow_cascade_ref[i]) && (i < MAX_SHADOW_CASCADE); i++) {
if (!cascade_visible[i]) {
continue;
}
EEVEE_LampEngineData *led = EEVEE_lamp_data_ensure(ob);
Lamp *la = (Lamp *)ob->data;