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Eevee: Probes: Add culling for planar probes. 

Planar probes that have no influence on pixels in the view are culled.

This greatly improve performance when theses probes are offscreen.
This commit is contained in:
Clément Foucault 2018-03-08 17:56:30 +01:00
parent 7c31edb385
commit 13b99b7bbb
1 changed files with 36 additions and 23 deletions
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59
source/blender/draw/engines/eevee/eevee_lightprobes.c
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@ -564,14 +564,34 @@ void EEVEE_lightprobes_cache_add(EEVEE_ViewLayerData *sldata, Object *ob)
EEVEE_LightProbesInfo *pinfo = sldata->probes;
LightProbe *probe = (LightProbe *)ob->data;
/* Step 1 find all lamps in the scene and setup them */
if ((probe->type == LIGHTPROBE_TYPE_CUBE && pinfo->num_cube >= MAX_PROBE) ||
(probe->type == LIGHTPROBE_TYPE_GRID && pinfo->num_grid >= MAX_PROBE))
(probe->type == LIGHTPROBE_TYPE_GRID && pinfo->num_grid >= MAX_PROBE) ||
(probe->type == LIGHTPROBE_TYPE_PLANAR && pinfo->num_grid >= MAX_PLANAR))
{
printf("Too much probes in the scene !!!\n");
return;
}
if (probe->type == LIGHTPROBE_TYPE_PLANAR) {
/* See if this planar probe is inside the view frustum. If not, no need to update it. */
/* NOTE: this could be bypassed if we want feedback loop mirrors for rendering. */
BoundBox bbox; float tmp[4][4];
const float min[3] = {-1.0f, -1.0f, -1.0f};
const float max[3] = { 1.0f, 1.0f, 1.0f};
BKE_boundbox_init_from_minmax(&bbox, min, max);
copy_m4_m4(tmp, ob->obmat);
normalize_v3(tmp[2]);
mul_v3_fl(tmp[2], probe->distinf);
for (int v = 0; v < 8; ++v) {
mul_m4_v3(tmp, bbox.vec[v]);
}
if (!DRW_culling_box_test(&bbox)) {
return; /* Culled */
}
}
EEVEE_LightProbeEngineData *ped = EEVEE_lightprobe_data_ensure(ob);
ped->num_cell = probe->grid_resolution_x * probe->grid_resolution_y * probe->grid_resolution_z;
@ -605,18 +625,20 @@ void EEVEE_lightprobes_cache_add(EEVEE_ViewLayerData *sldata, Object *ob)
pinfo->do_cube_update |= ped->need_update;
if (probe->type == LIGHTPROBE_TYPE_CUBE) {
pinfo->probes_cube_ref[pinfo->num_cube] = ob;
pinfo->num_cube++;
}
else if (probe->type == LIGHTPROBE_TYPE_PLANAR) {
pinfo->probes_planar_ref[pinfo->num_planar] = ob;
pinfo->num_planar++;
}
else { /* GRID */
pinfo->probes_grid_ref[pinfo->num_grid] = ob;
pinfo->num_grid++;
pinfo->total_irradiance_samples += ped->num_cell;
switch (probe->type) {
case LIGHTPROBE_TYPE_CUBE:
pinfo->probes_cube_ref[pinfo->num_cube] = ob;
pinfo->num_cube++;
break;
case LIGHTPROBE_TYPE_PLANAR:
pinfo->probes_planar_ref[pinfo->num_planar] = ob;
pinfo->num_planar++;
break;
case LIGHTPROBE_TYPE_GRID:
pinfo->probes_grid_ref[pinfo->num_grid] = ob;
pinfo->num_grid++;
pinfo->total_irradiance_samples += ped->num_cell;
break;
}
}
@ -636,8 +658,6 @@ static void EEVEE_planar_reflections_cache_finish(EEVEE_ViewLayerData *sldata, E
LightProbe *probe = (LightProbe *)ob->data;
EEVEE_LightProbeEngineData *ped = EEVEE_lightprobe_data_ensure(ob);
/* TODO do culling here */
ped->probe_id = i;
/* Debug Display */
@ -689,8 +709,6 @@ static void EEVEE_planar_reflections_updates(EEVEE_ViewLayerData *sldata)
/* Convert from [-1, 1] to [0, 1] (NDC to Texture coord). */
mul_m4_m4m4(eplanar->reflectionmat, rangemat, eplanar->reflectionmat);
ped->need_update = true;
/* Compute clip plane equation / normal. */
float refpoint[3];
copy_v3_v3(eplanar->plane_equation, ob->obmat[2]);
@ -1478,12 +1496,7 @@ void EEVEE_lightprobes_refresh_planar(EEVEE_ViewLayerData *sldata, EEVEE_Data *v
for (int i = 0; (ob = pinfo->probes_planar_ref[i]) && (i < MAX_PLANAR); i++) {
EEVEE_LightProbeEngineData *ped = EEVEE_lightprobe_data_ensure(ob);
if (!ped->need_update) {
continue;
}
render_scene_to_planar(sldata, vedata, i, ped);
ped->need_update = false;
ped->probe_id = i;
}
/* Restore */