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Code Releases Wiki Activity

Directional lights and shadow mapping are functional.

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This commit is contained in:
Juan Linietsky
2019-09-07 14:38:17 -03:00
parent 920db604d2
commit 88a7debbbc
11 changed files with 232 additions and 50 deletions
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66
servers/visual/rasterizer_rd/rasterizer_scene_rd.cpp
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@@ -898,6 +898,8 @@ void RasterizerSceneRD::directional_shadow_atlas_set_size(int p_size) {
return;
}
directional_shadow.size = p_size;
if (directional_shadow.depth.is_valid()) {
RD::get_singleton()->free(directional_shadow.depth);
directional_shadow.depth = RID();
@@ -925,17 +927,34 @@ void RasterizerSceneRD::set_directional_shadow_count(int p_count) {
directional_shadow.current_light = 0;
}
static Rect2i _get_directional_shadow_rect(int p_size, int p_shadow_count, int p_shadow_index) {
int split_h = 1;
int split_v = 1;
while (split_h * split_v < p_shadow_count) {
if (split_h == split_v) {
split_h <<= 1;
} else {
split_v <<= 1;
}
}
Rect2i rect(0, 0, p_size, p_size);
rect.size.width /= split_h;
rect.size.height /= split_v;
rect.position.x = rect.size.width * (p_shadow_index % split_h);
rect.position.y = rect.size.height * (p_shadow_index / split_h);
return rect;
}
int RasterizerSceneRD::get_directional_light_shadow_size(RID p_light_intance) {
ERR_FAIL_COND_V(directional_shadow.light_count == 0, 0);
int shadow_size;
if (directional_shadow.light_count == 1) {
shadow_size = directional_shadow.size;
} else {
shadow_size = directional_shadow.size / 2; //more than 4 not supported anyway
}
Rect2i r = _get_directional_shadow_rect(directional_shadow.size, directional_shadow.light_count, 0);
LightInstance *light_instance = light_instance_owner.getornull(p_light_intance);
ERR_FAIL_COND_V(!light_instance, 0);
@@ -943,11 +962,11 @@ int RasterizerSceneRD::get_directional_light_shadow_size(RID p_light_intance) {
switch (storage->light_directional_get_shadow_mode(light_instance->light)) {
case VS::LIGHT_DIRECTIONAL_SHADOW_ORTHOGONAL:
break; //none
case VS::LIGHT_DIRECTIONAL_SHADOW_PARALLEL_2_SPLITS:
case VS::LIGHT_DIRECTIONAL_SHADOW_PARALLEL_4_SPLITS: shadow_size /= 2; break;
case VS::LIGHT_DIRECTIONAL_SHADOW_PARALLEL_2_SPLITS: r.size.height /= 2; break;
case VS::LIGHT_DIRECTIONAL_SHADOW_PARALLEL_4_SPLITS: r.size /= 2; break;
}
return shadow_size;
return MAX(r.size.width, r.size.height);
}
//////////////////////////////////////////////////
@@ -1112,27 +1131,9 @@ void RasterizerSceneRD::render_shadow(RID p_light, RID p_shadow_atlas, int p_pas
if (storage->light_get_type(light_instance->light) == VS::LIGHT_DIRECTIONAL) {
//set pssm stuff
if (light_instance->last_scene_shadow_pass != scene_pass) {
//assign rect if unassigned
light_instance->light_directional_index = directional_shadow.current_light;
light_instance->last_scene_shadow_pass = scene_pass;
light_instance->directional_rect = _get_directional_shadow_rect(directional_shadow.size, directional_shadow.light_count, directional_shadow.current_light);
directional_shadow.current_light++;
if (directional_shadow.light_count == 1) {
light_instance->directional_rect = Rect2(0, 0, directional_shadow.size, directional_shadow.size);
} else if (directional_shadow.light_count == 2) {
light_instance->directional_rect = Rect2(0, 0, directional_shadow.size, directional_shadow.size / 2);
if (light_instance->light_directional_index == 1) {
light_instance->directional_rect.position.x += light_instance->directional_rect.size.x;
}
} else { //3 and 4
light_instance->directional_rect = Rect2(0, 0, directional_shadow.size / 2, directional_shadow.size / 2);
if (light_instance->light_directional_index & 1) {
light_instance->directional_rect.position.x += light_instance->directional_rect.size.x;
}
if (light_instance->light_directional_index / 2) {
light_instance->directional_rect.position.y += light_instance->directional_rect.size.y;
}
}
light_instance->last_scene_shadow_pass = scene_pass;
}
light_projection = light_instance->shadow_transform[p_pass].camera;
@@ -1168,6 +1169,11 @@ void RasterizerSceneRD::render_shadow(RID p_light, RID p_shadow_atlas, int p_pas
}
}
light_instance->shadow_transform[p_pass].atlas_rect = atlas_rect;
light_instance->shadow_transform[p_pass].atlas_rect.position /= directional_shadow.size;
light_instance->shadow_transform[p_pass].atlas_rect.size /= directional_shadow.size;
float bias_mult = Math::lerp(1.0f, light_instance->shadow_transform[p_pass].bias_scale, storage->light_get_param(light_instance->light, VS::LIGHT_PARAM_SHADOW_BIAS_SPLIT_SCALE));
zfar = storage->light_get_param(light_instance->light, VS::LIGHT_PARAM_RANGE);
bias = storage->light_get_param(light_instance->light, VS::LIGHT_PARAM_SHADOW_BIAS) * bias_mult;