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authorRémi Verschelde <rverschelde@gmail.com>2023-01-24 09:15:26 +0100
committerRémi Verschelde <rverschelde@gmail.com>2023-01-24 09:15:26 +0100
commita6042b649a3626488550a822b7d9469aa2bd3f92 (patch)
treeaa085871bd57af6b432cc957183e2cb66f1e1d8a /servers
parent514b3486196ac4779d7a9dbe84e7223d8d365a6a (diff)
parent4bd01a93dc82b4ac5734ac2a4af70d49b4559496 (diff)
Merge pull request #71832 from Geometror/fix-spotlight-artifacts
Fix some `SpotLight3D` issues (clustering artifacts, leaking light, AABB)
Diffstat (limited to 'servers')
-rw-r--r--servers/rendering/renderer_rd/cluster_builder_rd.cpp46
-rw-r--r--servers/rendering/renderer_rd/cluster_builder_rd.h95
-rw-r--r--servers/rendering/renderer_rd/shaders/scene_forward_lights_inc.glsl9
3 files changed, 89 insertions, 61 deletions
diff --git a/servers/rendering/renderer_rd/cluster_builder_rd.cpp b/servers/rendering/renderer_rd/cluster_builder_rd.cpp
index 73a0c652a4..959a752fba 100644
--- a/servers/rendering/renderer_rd/cluster_builder_rd.cpp
+++ b/servers/rendering/renderer_rd/cluster_builder_rd.cpp
@@ -74,7 +74,7 @@ ClusterBuilderSharedDataRD::ClusterBuilderSharedDataRD() {
cluster_debug.shader_pipeline = RD::get_singleton()->compute_pipeline_create(cluster_debug.shader);
}
- { // SPHERE
+ { // Sphere mesh data.
static const uint32_t icosphere_vertex_count = 42;
static const float icosphere_vertices[icosphere_vertex_count * 3] = {
0, 0, -1, 0.7236073, -0.5257253, -0.4472195, -0.276388, -0.8506492, -0.4472199, -0.8944262, 0, -0.4472156, -0.276388, 0.8506492, -0.4472199, 0.7236073, 0.5257253, -0.4472195, 0.276388, -0.8506492, 0.4472199, -0.7236073, -0.5257253, 0.4472195, -0.7236073, 0.5257253, 0.4472195, 0.276388, 0.8506492, 0.4472199, 0.8944262, 0, 0.4472156, 0, 0, 1, -0.1624555, -0.4999952, -0.8506544, 0.4253227, -0.3090114, -0.8506542, 0.2628688, -0.8090116, -0.5257377, 0.8506479, 0, -0.5257359, 0.4253227, 0.3090114, -0.8506542, -0.5257298, 0, -0.8506517, -0.6881894, -0.4999969, -0.5257362, -0.1624555, 0.4999952, -0.8506544, -0.6881894, 0.4999969, -0.5257362, 0.2628688, 0.8090116, -0.5257377, 0.9510579, -0.3090126, 0, 0.9510579, 0.3090126, 0, 0, -1, 0, 0.5877856, -0.8090167, 0, -0.9510579, -0.3090126, 0, -0.5877856, -0.8090167, 0, -0.5877856, 0.8090167, 0, -0.9510579, 0.3090126, 0, 0.5877856, 0.8090167, 0, 0, 1, 0, 0.6881894, -0.4999969, 0.5257362, -0.2628688, -0.8090116, 0.5257377, -0.8506479, 0, 0.5257359, -0.2628688, 0.8090116, 0.5257377, 0.6881894, 0.4999969, 0.5257362, 0.1624555, -0.4999952, 0.8506544, 0.5257298, 0, 0.8506517, -0.4253227, -0.3090114, 0.8506542, -0.4253227, 0.3090114, 0.8506542, 0.1624555, 0.4999952, 0.8506544
@@ -118,7 +118,7 @@ ClusterBuilderSharedDataRD::ClusterBuilderSharedDataRD() {
sphere_overfit = 1.0 / min_d;
}
- { // CONE
+ { // Cone mesh data.
static const uint32_t cone_vertex_count = 99;
static const float cone_vertices[cone_vertex_count * 3] = {
0, 1, -1, 0.1950903, 0.9807853, -1, 0.3826835, 0.9238795, -1, 0.5555703, 0.8314696, -1, 0.7071068, 0.7071068, -1, 0.8314697, 0.5555702, -1, 0.9238795, 0.3826834, -1, 0.9807853, 0.1950903, -1, 1, 0, -1, 0.9807853, -0.1950902, -1, 0.9238796, -0.3826833, -1, 0.8314697, -0.5555702, -1, 0.7071068, -0.7071068, -1, 0.5555702, -0.8314697, -1, 0.3826833, -0.9238796, -1, 0.1950901, -0.9807853, -1, -3.25841e-7, -1, -1, -0.1950907, -0.9807852, -1, -0.3826839, -0.9238793, -1, -0.5555707, -0.8314693, -1, -0.7071073, -0.7071063, -1, -0.83147, -0.5555697, -1, -0.9238799, -0.3826827, -1, 0, 0, 0, -0.9807854, -0.1950894, -1, -1, 9.65599e-7, -1, -0.9807851, 0.1950913, -1, -0.9238791, 0.3826845, -1, -0.8314689, 0.5555713, -1, -0.7071059, 0.7071077, -1, -0.5555691, 0.8314704, -1, -0.3826821, 0.9238801, -1, -0.1950888, 0.9807856, -1
@@ -172,7 +172,7 @@ ClusterBuilderSharedDataRD::ClusterBuilderSharedDataRD() {
cone_overfit = 1.0 / min_d;
}
- { // BOX
+ { // Box mesh data.
static const uint32_t box_vertex_count = 8;
static const float box_vertices[box_vertex_count * 3] = {
-1, -1, -1, -1, -1, 1, -1, 1, -1, -1, 1, 1, 1, -1, -1, 1, -1, 1, 1, 1, -1, 1, 1, 1
@@ -219,8 +219,9 @@ ClusterBuilderSharedDataRD::~ClusterBuilderSharedDataRD() {
void ClusterBuilderRD::_clear() {
if (cluster_buffer.is_null()) {
- return; //nothing to clear
+ return;
}
+
RD::get_singleton()->free(cluster_buffer);
RD::get_singleton()->free(cluster_render_buffer);
RD::get_singleton()->free(element_buffer);
@@ -254,7 +255,7 @@ void ClusterBuilderRD::setup(Size2i p_screen_size, uint32_t p_max_elements, RID
cluster_screen_size.height = (p_screen_size.height - 1) / cluster_size + 1;
max_elements_by_type = p_max_elements;
- if (max_elements_by_type % 32) { //need to be 32 aligned
+ if (max_elements_by_type % 32) { // Needs to be aligned to 32.
max_elements_by_type += 32 - (max_elements_by_type % 32);
}
@@ -264,7 +265,8 @@ void ClusterBuilderRD::setup(Size2i p_screen_size, uint32_t p_max_elements, RID
uint32_t element_tag_bits_size = render_element_max / 32;
uint32_t element_tag_depth_bits_size = render_element_max;
- cluster_render_buffer_size = cluster_screen_size.x * cluster_screen_size.y * (element_tag_bits_size + element_tag_depth_bits_size) * 4; // tag bits (element was used) and tag depth (depth range in which it was used)
+
+ cluster_render_buffer_size = cluster_screen_size.x * cluster_screen_size.y * (element_tag_bits_size + element_tag_depth_bits_size) * 4; // Tag bits (element was used) and tag depth (depth range in which it was used).
cluster_render_buffer = RD::get_singleton()->storage_buffer_create(cluster_render_buffer_size);
cluster_buffer = RD::get_singleton()->storage_buffer_create(cluster_buffer_size);
@@ -379,9 +381,9 @@ void ClusterBuilderRD::begin(const Transform3D &p_view_transform, const Projecti
projection = p_cam_projection;
z_near = projection.get_z_near();
z_far = projection.get_z_far();
- orthogonal = p_cam_projection.is_orthogonal();
+ camera_orthogonal = p_cam_projection.is_orthogonal();
adjusted_projection = projection;
- if (!orthogonal) {
+ if (!camera_orthogonal) {
adjusted_projection.adjust_perspective_znear(0.0001);
}
@@ -390,7 +392,7 @@ void ClusterBuilderRD::begin(const Transform3D &p_view_transform, const Projecti
projection = correction * projection;
adjusted_projection = correction * adjusted_projection;
- //reset counts
+ // Reset counts.
render_element_count = 0;
for (uint32_t i = 0; i < ELEMENT_TYPE_MAX; i++) {
cluster_count_by_type[i] = 0;
@@ -402,14 +404,14 @@ void ClusterBuilderRD::bake_cluster() {
RD::get_singleton()->draw_command_begin_label("Bake Light Cluster");
- //clear cluster buffer
+ // Clear cluster buffer.
RD::get_singleton()->buffer_clear(cluster_buffer, 0, cluster_buffer_size, RD::BARRIER_MASK_RASTER | RD::BARRIER_MASK_COMPUTE);
if (render_element_count > 0) {
- //clear render buffer
+ // Clear render buffer.
RD::get_singleton()->buffer_clear(cluster_render_buffer, 0, cluster_render_buffer_size, RD::BARRIER_MASK_RASTER);
- { //fill state uniform
+ { // Fill state uniform.
StateUniform state;
@@ -425,13 +427,13 @@ void ClusterBuilderRD::bake_cluster() {
RD::get_singleton()->buffer_update(state_uniform, 0, sizeof(StateUniform), &state, RD::BARRIER_MASK_RASTER | RD::BARRIER_MASK_COMPUTE);
}
- //update instances
+ // Update instances.
RD::get_singleton()->buffer_update(element_buffer, 0, sizeof(RenderElementData) * render_element_count, render_elements, RD::BARRIER_MASK_RASTER | RD::BARRIER_MASK_COMPUTE);
RENDER_TIMESTAMP("Render 3D Cluster Elements");
- //render elements
+ // Render elements.
{
RD::DrawListID draw_list = RD::get_singleton()->draw_list_begin(framebuffer, RD::INITIAL_ACTION_DROP, RD::FINAL_ACTION_DISCARD, RD::INITIAL_ACTION_DROP, RD::FINAL_ACTION_DISCARD);
ClusterBuilderSharedDataRD::ClusterRender::PushConstant push_constant = {};
@@ -447,8 +449,16 @@ void ClusterBuilderRD::bake_cluster() {
RD::get_singleton()->draw_list_bind_index_array(draw_list, shared->sphere_index_array);
} break;
case ELEMENT_TYPE_SPOT_LIGHT: {
- RD::get_singleton()->draw_list_bind_vertex_array(draw_list, shared->cone_vertex_array);
- RD::get_singleton()->draw_list_bind_index_array(draw_list, shared->cone_index_array);
+ // If the spot angle is above a certain threshold, use a sphere instead of a cone for building the clusters
+ // since the cone gets too flat/large (spot angle close to 90 degrees) or
+ // can't even cover the affected area of the light (spot angle above 90 degrees).
+ if (render_elements[i].has_wide_spot_angle) {
+ RD::get_singleton()->draw_list_bind_vertex_array(draw_list, shared->sphere_vertex_array);
+ RD::get_singleton()->draw_list_bind_index_array(draw_list, shared->sphere_index_array);
+ } else {
+ RD::get_singleton()->draw_list_bind_vertex_array(draw_list, shared->cone_vertex_array);
+ RD::get_singleton()->draw_list_bind_index_array(draw_list, shared->cone_index_array);
+ }
} break;
case ELEMENT_TYPE_DECAL:
case ELEMENT_TYPE_REFLECTION_PROBE: {
@@ -465,7 +475,7 @@ void ClusterBuilderRD::bake_cluster() {
}
RD::get_singleton()->draw_list_end(RD::BARRIER_MASK_COMPUTE);
}
- //store elements
+ // Store elements.
RENDER_TIMESTAMP("Pack 3D Cluster Elements");
{
@@ -509,7 +519,7 @@ void ClusterBuilderRD::debug(ElementType p_element) {
push_constant.cluster_screen_size[1] = cluster_screen_size.y;
push_constant.cluster_shift = get_shift_from_power_of_2(cluster_size);
push_constant.cluster_type = p_element;
- push_constant.orthogonal = orthogonal;
+ push_constant.orthogonal = camera_orthogonal;
push_constant.z_far = z_far;
push_constant.z_near = z_near;
push_constant.max_cluster_element_count_div_32 = max_elements_by_type / 32;
diff --git a/servers/rendering/renderer_rd/cluster_builder_rd.h b/servers/rendering/renderer_rd/cluster_builder_rd.h
index 0b20a5d7ee..a13e6c8172 100644
--- a/servers/rendering/renderer_rd/cluster_builder_rd.h
+++ b/servers/rendering/renderer_rd/cluster_builder_rd.h
@@ -43,13 +43,13 @@ class ClusterBuilderSharedDataRD {
RID sphere_vertex_array;
RID sphere_index_buffer;
RID sphere_index_array;
- float sphere_overfit = 0.0; //because an icosphere is not a perfect sphere, we need to enlarge it to cover the sphere area
+ float sphere_overfit = 0.0; // Because an icosphere is not a perfect sphere, we need to enlarge it to cover the sphere area.
RID cone_vertex_buffer;
RID cone_vertex_array;
RID cone_index_buffer;
RID cone_index_array;
- float cone_overfit = 0.0; //because an cone mesh is not a perfect sphere, we need to enlarge it to cover the actual cone area
+ float cone_overfit = 0.0; // Because an cone mesh is not a perfect cone, we need to enlarge it to cover the actual cone area.
RID box_vertex_buffer;
RID box_vertex_array;
@@ -73,6 +73,7 @@ class ClusterBuilderSharedDataRD {
ClusterRenderShaderRD cluster_render_shader;
RID shader_version;
RID shader;
+
enum PipelineVersion {
PIPELINE_NORMAL,
PIPELINE_MSAA,
@@ -85,10 +86,11 @@ class ClusterBuilderSharedDataRD {
struct ClusterStore {
struct PushConstant {
uint32_t cluster_render_data_size; // how much data for a single cluster takes
- uint32_t max_render_element_count_div_32; //divided by 32
+ uint32_t max_render_element_count_div_32; // divided by 32
uint32_t cluster_screen_size[2];
- uint32_t render_element_count_div_32; //divided by 32
- uint32_t max_cluster_element_count_div_32; //divided by 32
+ uint32_t render_element_count_div_32; // divided by 32
+ uint32_t max_cluster_element_count_div_32; // divided by 32
+
uint32_t pad1;
uint32_t pad2;
};
@@ -111,6 +113,7 @@ class ClusterBuilderSharedDataRD {
uint32_t orthogonal;
uint32_t max_cluster_element_count_div_32;
+
uint32_t pad1;
uint32_t pad2;
};
@@ -128,6 +131,8 @@ public:
class ClusterBuilderRD {
public:
+ static constexpr float WIDE_SPOT_ANGLE_THRESHOLD_DEG = 60.0f;
+
enum LightType {
LIGHT_TYPE_OMNI,
LIGHT_TYPE_SPOT
@@ -144,21 +149,20 @@ public:
ELEMENT_TYPE_DECAL,
ELEMENT_TYPE_REFLECTION_PROBE,
ELEMENT_TYPE_MAX,
-
};
private:
ClusterBuilderSharedDataRD *shared = nullptr;
struct RenderElementData {
- uint32_t type; //0-4
+ uint32_t type; // 0-4
uint32_t touches_near;
uint32_t touches_far;
uint32_t original_index;
- float transform_inv[12]; //transposed transform for less space
+ float transform_inv[12]; // Transposed transform for less space.
float scale[3];
- uint32_t pad;
- };
+ uint32_t has_wide_spot_angle;
+ }; // Keep aligned to 32 bytes.
uint32_t cluster_count_by_type[ELEMENT_TYPE_MAX] = {};
uint32_t max_elements_by_type = 0;
@@ -172,7 +176,7 @@ private:
Projection projection;
float z_far = 0;
float z_near = 0;
- bool orthogonal = false;
+ bool camera_orthogonal = false;
enum Divisor {
DIVISOR_1,
@@ -188,26 +192,27 @@ private:
Size2i cluster_screen_size;
RID framebuffer;
- RID cluster_render_buffer; //used for creating
- RID cluster_buffer; //used for rendering
- RID element_buffer; //used for storing, to hint element touches far plane or near plane
+ RID cluster_render_buffer; // Used for creating.
+ RID cluster_buffer; // Used for rendering.
+ RID element_buffer; // Used for storing, to hint element touches far plane or near plane.
uint32_t cluster_render_buffer_size = 0;
uint32_t cluster_buffer_size = 0;
RID cluster_render_uniform_set;
RID cluster_store_uniform_set;
- //persistent data
+ // Persistent data.
void _clear();
struct StateUniform {
float projection[16];
float inv_z_far;
- uint32_t screen_to_clusters_shift; // shift to obtain coordinates in block indices
- uint32_t cluster_screen_width; //
- uint32_t cluster_data_size; // how much data for a single cluster takes
+ uint32_t screen_to_clusters_shift; // Shift to obtain coordinates in block indices.
+ uint32_t cluster_screen_width;
+ uint32_t cluster_data_size; // How much data is needed for a single cluster.
uint32_t cluster_depth_offset;
+
uint32_t pad0;
uint32_t pad1;
uint32_t pad2;
@@ -224,10 +229,10 @@ public:
_FORCE_INLINE_ void add_light(LightType p_type, const Transform3D &p_transform, float p_radius, float p_spot_aperture) {
if (p_type == LIGHT_TYPE_OMNI && cluster_count_by_type[ELEMENT_TYPE_OMNI_LIGHT] == max_elements_by_type) {
- return; //max number elements reached
+ return; // Max number elements reached.
}
if (p_type == LIGHT_TYPE_SPOT && cluster_count_by_type[ELEMENT_TYPE_SPOT_LIGHT] == max_elements_by_type) {
- return; //max number elements reached
+ return; // Max number elements reached.
}
RenderElementData &e = render_elements[render_element_count];
@@ -242,15 +247,14 @@ public:
radius *= p_radius;
if (p_type == LIGHT_TYPE_OMNI) {
- radius *= shared->sphere_overfit; // overfit icosphere
+ radius *= shared->sphere_overfit; // Overfit icosphere.
- //omni
float depth = -xform.origin.z;
- if (orthogonal) {
+ if (camera_orthogonal) {
e.touches_near = (depth - radius) < z_near;
} else {
- //contains camera inside light
- float radius2 = radius * shared->sphere_overfit; // overfit again for outer size (camera may be outside actual sphere but behind an icosphere vertex)
+ // Contains camera inside light.
+ float radius2 = radius * shared->sphere_overfit; // Overfit again for outer size (camera may be outside actual sphere but behind an icosphere vertex)
e.touches_near = xform.origin.length_squared() < radius2 * radius2;
}
@@ -265,12 +269,11 @@ public:
cluster_count_by_type[ELEMENT_TYPE_OMNI_LIGHT]++;
- } else {
- //spot
- radius *= shared->cone_overfit; // overfit icosphere
+ } else /*LIGHT_TYPE_SPOT */ {
+ radius *= shared->cone_overfit; // Overfit icosphere
real_t len = Math::tan(Math::deg_to_rad(p_spot_aperture)) * radius;
- //approximate, probably better to use a cone support function
+ // Approximate, probably better to use a cone support function.
float max_d = -1e20;
float min_d = 1e20;
#define CONE_MINMAX(m_x, m_y) \
@@ -285,14 +288,13 @@ public:
CONE_MINMAX(-1, -1);
CONE_MINMAX(1, -1);
- if (orthogonal) {
+ if (camera_orthogonal) {
e.touches_near = min_d < z_near;
} else {
- //contains camera inside light
Plane base_plane(-xform.basis.get_column(Vector3::AXIS_Z), xform.origin);
float dist = base_plane.distance_to(Vector3());
if (dist >= 0 && dist < radius) {
- //inside, check angle
+ // Contains camera inside light, check angle.
float angle = Math::rad_to_deg(Math::acos((-xform.origin.normalized()).dot(-xform.basis.get_column(Vector3::AXIS_Z))));
e.touches_near = angle < p_spot_aperture * 1.05; //overfit aperture a little due to cone overfit
} else {
@@ -302,12 +304,23 @@ public:
e.touches_far = max_d > z_far;
- e.scale[0] = len * shared->cone_overfit;
- e.scale[1] = len * shared->cone_overfit;
- e.scale[2] = radius;
+ // If the spot angle is above the threshold, use a sphere instead of a cone for building the clusters
+ // since the cone gets too flat/large (spot angle close to 90 degrees) or
+ // can't even cover the affected area of the light (spot angle above 90 degrees).
+ if (p_spot_aperture > WIDE_SPOT_ANGLE_THRESHOLD_DEG) {
+ e.scale[0] = radius;
+ e.scale[1] = radius;
+ e.scale[2] = radius;
+ e.has_wide_spot_angle = true;
+ } else {
+ e.scale[0] = len * shared->cone_overfit;
+ e.scale[1] = len * shared->cone_overfit;
+ e.scale[2] = radius;
+ e.has_wide_spot_angle = false;
+ }
e.type = ELEMENT_TYPE_SPOT_LIGHT;
- e.original_index = cluster_count_by_type[ELEMENT_TYPE_SPOT_LIGHT]; //use omni since they share index
+ e.original_index = cluster_count_by_type[ELEMENT_TYPE_SPOT_LIGHT]; // Use omni light since they share index.
RendererRD::MaterialStorage::store_transform_transposed_3x4(xform, e.transform_inv);
@@ -319,16 +332,16 @@ public:
_FORCE_INLINE_ void add_box(BoxType p_box_type, const Transform3D &p_transform, const Vector3 &p_half_extents) {
if (p_box_type == BOX_TYPE_DECAL && cluster_count_by_type[ELEMENT_TYPE_DECAL] == max_elements_by_type) {
- return; //max number elements reached
+ return; // Max number elements reached.
}
if (p_box_type == BOX_TYPE_REFLECTION_PROBE && cluster_count_by_type[ELEMENT_TYPE_REFLECTION_PROBE] == max_elements_by_type) {
- return; //max number elements reached
+ return; // Max number elements reached.
}
RenderElementData &e = render_elements[render_element_count];
Transform3D xform = view_xform * p_transform;
- //extract scale and scale the matrix by it, makes things simpler
+ // Extract scale and scale the matrix by it, makes things simpler.
Vector3 scale = p_half_extents;
for (uint32_t i = 0; i < 3; i++) {
float s = xform.basis.rows[i].length();
@@ -339,10 +352,10 @@ public:
float box_depth = Math::abs(xform.basis.xform_inv(Vector3(0, 0, -1)).dot(scale));
float depth = -xform.origin.z;
- if (orthogonal) {
+ if (camera_orthogonal) {
e.touches_near = depth - box_depth < z_near;
} else {
- //contains camera inside box
+ // Contains camera inside box.
Vector3 inside = xform.xform_inv(Vector3(0, 0, 0)).abs();
e.touches_near = inside.x < scale.x && inside.y < scale.y && inside.z < scale.z;
}
diff --git a/servers/rendering/renderer_rd/shaders/scene_forward_lights_inc.glsl b/servers/rendering/renderer_rd/shaders/scene_forward_lights_inc.glsl
index b30b0c8169..9dda62c28d 100644
--- a/servers/rendering/renderer_rd/shaders/scene_forward_lights_inc.glsl
+++ b/servers/rendering/renderer_rd/shaders/scene_forward_lights_inc.glsl
@@ -794,8 +794,13 @@ void light_process_spot(uint idx, vec3 vertex, vec3 eye_vec, vec3 normal, vec3 v
float light_length = length(light_rel_vec);
float spot_attenuation = get_omni_attenuation(light_length, spot_lights.data[idx].inv_radius, spot_lights.data[idx].attenuation);
vec3 spot_dir = spot_lights.data[idx].direction;
- float scos = max(dot(-normalize(light_rel_vec), spot_dir), spot_lights.data[idx].cone_angle);
- float spot_rim = max(0.0001, (1.0 - scos) / (1.0 - spot_lights.data[idx].cone_angle));
+
+ // This conversion to a highp float is crucial to prevent light leaking
+ // due to precision errors in the following calculations (cone angle is mediump).
+ highp float cone_angle = spot_lights.data[idx].cone_angle;
+ float scos = max(dot(-normalize(light_rel_vec), spot_dir), cone_angle);
+ float spot_rim = max(0.0001, (1.0 - scos) / (1.0 - cone_angle));
+
spot_attenuation *= 1.0 - pow(spot_rim, spot_lights.data[idx].cone_attenuation);
float light_attenuation = spot_attenuation;
vec3 color = spot_lights.data[idx].color;