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godot/servers/rendering/renderer_rd/renderer_scene_gi_rd.h
Rémi Verschelde f8ab79e68a Zero initialize all pointer class and struct members 
This prevents the pitfall of UB when checking if they have been
assigned something valid by comparing to nullptr.
2022-04-04 19:49:50 +02:00

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/*************************************************************************/
/* renderer_scene_gi_rd.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifndef RENDERING_SERVER_SCENE_GI_RD_H
#define RENDERING_SERVER_SCENE_GI_RD_H
#include "core/templates/local_vector.h"
#include "core/templates/rid_owner.h"
#include "servers/rendering/renderer_compositor.h"
#include "servers/rendering/renderer_rd/renderer_scene_environment_rd.h"
#include "servers/rendering/renderer_rd/renderer_scene_sky_rd.h"
#include "servers/rendering/renderer_rd/renderer_storage_rd.h"
#include "servers/rendering/renderer_rd/shaders/gi.glsl.gen.h"
#include "servers/rendering/renderer_rd/shaders/sdfgi_debug.glsl.gen.h"
#include "servers/rendering/renderer_rd/shaders/sdfgi_debug_probes.glsl.gen.h"
#include "servers/rendering/renderer_rd/shaders/sdfgi_direct_light.glsl.gen.h"
#include "servers/rendering/renderer_rd/shaders/sdfgi_integrate.glsl.gen.h"
#include "servers/rendering/renderer_rd/shaders/sdfgi_preprocess.glsl.gen.h"
#include "servers/rendering/renderer_rd/shaders/voxel_gi.glsl.gen.h"
#include "servers/rendering/renderer_rd/shaders/voxel_gi_debug.glsl.gen.h"
#include "servers/rendering/renderer_rd/storage_rd/texture_storage.h"
#include "servers/rendering/renderer_scene_render.h"
#include "servers/rendering/rendering_device.h"
// Forward declare RenderDataRD and RendererSceneRenderRD so we can pass it into some of our methods, these classes are pretty tightly bound
struct RenderDataRD;
class RendererSceneRenderRD;
class RendererSceneGIRD {
private:
RendererStorageRD *storage = nullptr;
/* VOXEL_GI INSTANCE */
struct VoxelGILight {
uint32_t type;
float energy;
float radius;
float attenuation;
float color[3];
float cos_spot_angle;
float position[3];
float inv_spot_attenuation;
float direction[3];
uint32_t has_shadow;
};
struct VoxelGIPushConstant {
int32_t limits[3];
uint32_t stack_size;
float emission_scale;
float propagation;
float dynamic_range;
uint32_t light_count;
uint32_t cell_offset;
uint32_t cell_count;
float aniso_strength;
uint32_t pad;
};
struct VoxelGIDynamicPushConstant {
int32_t limits[3];
uint32_t light_count;
int32_t x_dir[3];
float z_base;
int32_t y_dir[3];
float z_sign;
int32_t z_dir[3];
float pos_multiplier;
uint32_t rect_pos[2];
uint32_t rect_size[2];
uint32_t prev_rect_ofs[2];
uint32_t prev_rect_size[2];
uint32_t flip_x;
uint32_t flip_y;
float dynamic_range;
uint32_t on_mipmap;
float propagation;
float pad[3];
};
VoxelGILight *voxel_gi_lights = nullptr;
uint32_t voxel_gi_max_lights = 32;
RID voxel_gi_lights_uniform;
enum {
VOXEL_GI_SHADER_VERSION_COMPUTE_LIGHT,
VOXEL_GI_SHADER_VERSION_COMPUTE_SECOND_BOUNCE,
VOXEL_GI_SHADER_VERSION_COMPUTE_MIPMAP,
VOXEL_GI_SHADER_VERSION_WRITE_TEXTURE,
VOXEL_GI_SHADER_VERSION_DYNAMIC_OBJECT_LIGHTING,
VOXEL_GI_SHADER_VERSION_DYNAMIC_SHRINK_WRITE,
VOXEL_GI_SHADER_VERSION_DYNAMIC_SHRINK_PLOT,
VOXEL_GI_SHADER_VERSION_DYNAMIC_SHRINK_WRITE_PLOT,
VOXEL_GI_SHADER_VERSION_MAX
};
VoxelGiShaderRD voxel_gi_shader;
RID voxel_gi_lighting_shader_version;
RID voxel_gi_lighting_shader_version_shaders[VOXEL_GI_SHADER_VERSION_MAX];
RID voxel_gi_lighting_shader_version_pipelines[VOXEL_GI_SHADER_VERSION_MAX];
enum {
VOXEL_GI_DEBUG_COLOR,
VOXEL_GI_DEBUG_LIGHT,
VOXEL_GI_DEBUG_EMISSION,
VOXEL_GI_DEBUG_LIGHT_FULL,
VOXEL_GI_DEBUG_MAX
};
struct VoxelGIDebugPushConstant {
float projection[16];
uint32_t cell_offset;
float dynamic_range;
float alpha;
uint32_t level;
int32_t bounds[3];
uint32_t pad;
};
VoxelGiDebugShaderRD voxel_gi_debug_shader;
RID voxel_gi_debug_shader_version;
RID voxel_gi_debug_shader_version_shaders[VOXEL_GI_DEBUG_MAX];
PipelineCacheRD voxel_gi_debug_shader_version_pipelines[VOXEL_GI_DEBUG_MAX];
RID voxel_gi_debug_uniform_set;
/* SDFGI */
struct SDFGIShader {
enum SDFGIPreprocessShaderVersion {
PRE_PROCESS_SCROLL,
PRE_PROCESS_SCROLL_OCCLUSION,
PRE_PROCESS_JUMP_FLOOD_INITIALIZE,
PRE_PROCESS_JUMP_FLOOD_INITIALIZE_HALF,
PRE_PROCESS_JUMP_FLOOD,
PRE_PROCESS_JUMP_FLOOD_OPTIMIZED,
PRE_PROCESS_JUMP_FLOOD_UPSCALE,
PRE_PROCESS_OCCLUSION,
PRE_PROCESS_STORE,
PRE_PROCESS_MAX
};
struct PreprocessPushConstant {
int32_t scroll[3];
int32_t grid_size;
int32_t probe_offset[3];
int32_t step_size;
int32_t half_size;
uint32_t occlusion_index;
int32_t cascade;
uint32_t pad;
};
SdfgiPreprocessShaderRD preprocess;
RID preprocess_shader;
RID preprocess_pipeline[PRE_PROCESS_MAX];
struct DebugPushConstant {
float grid_size[3];
uint32_t max_cascades;
int32_t screen_size[2];
uint32_t use_occlusion;
float y_mult;
float cam_extent[3];
uint32_t probe_axis_size;
float cam_transform[16];
};
SdfgiDebugShaderRD debug;
RID debug_shader;
RID debug_shader_version;
RID debug_pipeline;
enum ProbeDebugMode {
PROBE_DEBUG_PROBES,
PROBE_DEBUG_VISIBILITY,
PROBE_DEBUG_MAX
};
struct DebugProbesPushConstant {
float projection[16];
uint32_t band_power;
uint32_t sections_in_band;
uint32_t band_mask;
float section_arc;
float grid_size[3];
uint32_t cascade;
uint32_t pad;
float y_mult;
int32_t probe_debug_index;
int32_t probe_axis_size;
};
SdfgiDebugProbesShaderRD debug_probes;
RID debug_probes_shader;
RID debug_probes_shader_version;
PipelineCacheRD debug_probes_pipeline[PROBE_DEBUG_MAX];
struct Light {
float color[3];
float energy;
float direction[3];
uint32_t has_shadow;
float position[3];
float attenuation;
uint32_t type;
float cos_spot_angle;
float inv_spot_attenuation;
float radius;
};
struct DirectLightPushConstant {
float grid_size[3];
uint32_t max_cascades;
uint32_t cascade;
uint32_t light_count;
uint32_t process_offset;
uint32_t process_increment;
int32_t probe_axis_size;
float bounce_feedback;
float y_mult;
uint32_t use_occlusion;
};
enum {
DIRECT_LIGHT_MODE_STATIC,
DIRECT_LIGHT_MODE_DYNAMIC,
DIRECT_LIGHT_MODE_MAX
};
SdfgiDirectLightShaderRD direct_light;
RID direct_light_shader;
RID direct_light_pipeline[DIRECT_LIGHT_MODE_MAX];
enum {
INTEGRATE_MODE_PROCESS,
INTEGRATE_MODE_STORE,
INTEGRATE_MODE_SCROLL,
INTEGRATE_MODE_SCROLL_STORE,
INTEGRATE_MODE_MAX
};
struct IntegratePushConstant {
enum {
SKY_MODE_DISABLED,
SKY_MODE_COLOR,
SKY_MODE_SKY,
};
float grid_size[3];
uint32_t max_cascades;
uint32_t probe_axis_size;
uint32_t cascade;
uint32_t history_index;
uint32_t history_size;
uint32_t ray_count;
float ray_bias;
int32_t image_size[2];
int32_t world_offset[3];
uint32_t sky_mode;
int32_t scroll[3];
float sky_energy;
float sky_color[3];
float y_mult;
uint32_t store_ambient_texture;
uint32_t pad[3];
};
SdfgiIntegrateShaderRD integrate;
RID integrate_shader;
RID integrate_pipeline[INTEGRATE_MODE_MAX];
RID integrate_default_sky_uniform_set;
} sdfgi_shader;
public:
/* VOXEL_GI INSTANCE */
//@TODO VoxelGIInstance is still directly used in the render code, we'll address this when we refactor the render code itself.
struct VoxelGIInstance {
// access to our containers
RendererStorageRD *storage = nullptr;
RendererSceneGIRD *gi = nullptr;
RID probe;
RID texture;
RID write_buffer;
struct Mipmap {
RID texture;
RID uniform_set;
RID second_bounce_uniform_set;
RID write_uniform_set;
uint32_t level;
uint32_t cell_offset;
uint32_t cell_count;
};
Vector<Mipmap> mipmaps;
struct DynamicMap {
RID texture; //color normally, or emission on first pass
RID fb_depth; //actual depth buffer for the first pass, float depth for later passes
RID depth; //actual depth buffer for the first pass, float depth for later passes
RID normal; //normal buffer for the first pass
RID albedo; //emission buffer for the first pass
RID orm; //orm buffer for the first pass
RID fb; //used for rendering, only valid on first map
RID uniform_set;
uint32_t size;
int mipmap; // mipmap to write to, -1 if no mipmap assigned
};
Vector<DynamicMap> dynamic_maps;
int slot = -1;
uint32_t last_probe_version = 0;
uint32_t last_probe_data_version = 0;
//uint64_t last_pass = 0;
uint32_t render_index = 0;
bool has_dynamic_object_data = false;
Transform3D transform;
void update(bool p_update_light_instances, const Vector<RID> &p_light_instances, const PagedArray<RendererSceneRender::GeometryInstance *> &p_dynamic_objects, RendererSceneRenderRD *p_scene_render);
void debug(RD::DrawListID p_draw_list, RID p_framebuffer, const CameraMatrix &p_camera_with_transform, bool p_lighting, bool p_emission, float p_alpha);
};
mutable RID_Owner<VoxelGIInstance> voxel_gi_instance_owner;
_FORCE_INLINE_ VoxelGIInstance *get_probe_instance(RID p_probe) const {
return voxel_gi_instance_owner.get_or_null(p_probe);
};
_FORCE_INLINE_ RID voxel_gi_instance_get_texture(RID p_probe) {
VoxelGIInstance *voxel_gi = get_probe_instance(p_probe);
ERR_FAIL_COND_V(!voxel_gi, RID());
return voxel_gi->texture;
};
RS::VoxelGIQuality voxel_gi_quality = RS::VOXEL_GI_QUALITY_LOW;
/* SDFGI */
struct SDFGI {
enum {
MAX_CASCADES = 8,
CASCADE_SIZE = 128,
PROBE_DIVISOR = 16,
ANISOTROPY_SIZE = 6,
MAX_DYNAMIC_LIGHTS = 128,
MAX_STATIC_LIGHTS = 1024,
LIGHTPROBE_OCT_SIZE = 6,
SH_SIZE = 16
};
struct Cascade {
struct UBO {
float offset[3];
float to_cell;
int32_t probe_offset[3];
uint32_t pad;
};
//cascade blocks are full-size for volume (128^3), half size for albedo/emission
RID sdf_tex;
RID light_tex;
RID light_aniso_0_tex;
RID light_aniso_1_tex;
RID light_data;
RID light_aniso_0_data;
RID light_aniso_1_data;
struct SolidCell { // this struct is unused, but remains as reference for size
uint32_t position;
uint32_t albedo;
uint32_t static_light;
uint32_t static_light_aniso;
};
RID solid_cell_dispatch_buffer; //buffer for indirect compute dispatch
RID solid_cell_buffer;
RID lightprobe_history_tex;
RID lightprobe_average_tex;
float cell_size;
Vector3i position;
static const Vector3i DIRTY_ALL;
Vector3i dirty_regions; //(0,0,0 is not dirty, negative is refresh from the end, DIRTY_ALL is refresh all.
RID sdf_store_uniform_set;
RID sdf_direct_light_uniform_set;
RID scroll_uniform_set;
RID scroll_occlusion_uniform_set;
RID integrate_uniform_set;
RID lights_buffer;
bool all_dynamic_lights_dirty = true;
};
// access to our containers
RendererStorageRD *storage = nullptr;
RendererSceneGIRD *gi = nullptr;
// used for rendering (voxelization)
RID render_albedo;
RID render_emission;
RID render_emission_aniso;
RID render_occlusion[8];
RID render_geom_facing;
RID render_sdf[2];
RID render_sdf_half[2];
// used for ping pong processing in cascades
RID sdf_initialize_uniform_set;
RID sdf_initialize_half_uniform_set;
RID jump_flood_uniform_set[2];
RID jump_flood_half_uniform_set[2];
RID sdf_upscale_uniform_set;
int upscale_jfa_uniform_set_index;
RID occlusion_uniform_set;
uint32_t cascade_size = 128;
LocalVector<Cascade> cascades;
RID lightprobe_texture;
RID lightprobe_data;
RID occlusion_texture;
RID occlusion_data;
RID ambient_texture; //integrates with volumetric fog
RID lightprobe_history_scroll; //used for scrolling lightprobes
RID lightprobe_average_scroll; //used for scrolling lightprobes
uint32_t history_size = 0;
float solid_cell_ratio = 0;
uint32_t solid_cell_count = 0;
int num_cascades = 6;
float min_cell_size = 0;
uint32_t probe_axis_count = 0; //amount of probes per axis, this is an odd number because it encloses endpoints
RID debug_uniform_set;
RID debug_probes_uniform_set;
RID cascades_ubo;
bool uses_occlusion = false;
float bounce_feedback = 0.5;
bool reads_sky = true;
float energy = 1.0;
float normal_bias = 1.1;
float probe_bias = 1.1;
RS::EnvironmentSDFGIYScale y_scale_mode = RS::ENV_SDFGI_Y_SCALE_75_PERCENT;
float y_mult = 1.0;
uint32_t render_pass = 0;
int32_t cascade_dynamic_light_count[SDFGI::MAX_CASCADES]; //used dynamically
RID integrate_sky_uniform_set;
void create(RendererSceneEnvironmentRD *p_env, const Vector3 &p_world_position, uint32_t p_requested_history_size, RendererSceneGIRD *p_gi);
void erase();
void update(RendererSceneEnvironmentRD *p_env, const Vector3 &p_world_position);
void update_light();
void update_probes(RendererSceneEnvironmentRD *p_env, RendererSceneSkyRD::Sky *p_sky);
void store_probes();
int get_pending_region_data(int p_region, Vector3i &r_local_offset, Vector3i &r_local_size, AABB &r_bounds) const;
void update_cascades();
void debug_draw(const CameraMatrix &p_projection, const Transform3D &p_transform, int p_width, int p_height, RID p_render_target, RID p_texture);
void debug_probes(RD::DrawListID p_draw_list, RID p_framebuffer, const CameraMatrix &p_camera_with_transform);
void pre_process_gi(const Transform3D &p_transform, RenderDataRD *p_render_data, RendererSceneRenderRD *p_scene_render);
void render_region(RID p_render_buffers, int p_region, const PagedArray<RendererSceneRender::GeometryInstance *> &p_instances, RendererSceneRenderRD *p_scene_render);
void render_static_lights(RID p_render_buffers, uint32_t p_cascade_count, const uint32_t *p_cascade_indices, const PagedArray<RID> *p_positional_light_cull_result, RendererSceneRenderRD *p_scene_render);
};
RS::EnvironmentSDFGIRayCount sdfgi_ray_count = RS::ENV_SDFGI_RAY_COUNT_16;
RS::EnvironmentSDFGIFramesToConverge sdfgi_frames_to_converge = RS::ENV_SDFGI_CONVERGE_IN_30_FRAMES;
RS::EnvironmentSDFGIFramesToUpdateLight sdfgi_frames_to_update_light = RS::ENV_SDFGI_UPDATE_LIGHT_IN_4_FRAMES;
float sdfgi_solid_cell_ratio = 0.25;
Vector3 sdfgi_debug_probe_pos;
Vector3 sdfgi_debug_probe_dir;
bool sdfgi_debug_probe_enabled = false;
Vector3i sdfgi_debug_probe_index;
/* SDFGI UPDATE */
int sdfgi_get_lightprobe_octahedron_size() const { return SDFGI::LIGHTPROBE_OCT_SIZE; }
/* GI */
enum {
MAX_VOXEL_GI_INSTANCES = 8
};
// Struct for use in render buffer
struct RenderBuffersGI {
RID voxel_gi_textures[MAX_VOXEL_GI_INSTANCES];
RID voxel_gi_buffer;
RID full_buffer;
RID full_dispatch;
RID full_mask;
RID uniform_set;
bool using_half_size_gi = false;
};
struct SDFGIData {
float grid_size[3];
uint32_t max_cascades;
uint32_t use_occlusion;
int32_t probe_axis_size;
float probe_to_uvw;
float normal_bias;
float lightprobe_tex_pixel_size[3];
float energy;
float lightprobe_uv_offset[3];
float y_mult;
float occlusion_clamp[3];
uint32_t pad3;
float occlusion_renormalize[3];
uint32_t pad4;
float cascade_probe_size[3];
uint32_t pad5;
struct ProbeCascadeData {
float position[3]; //offset of (0,0,0) in world coordinates
float to_probe; // 1/bounds * grid_size
int32_t probe_world_offset[3];
float to_cell; // 1/bounds * grid_size
};
ProbeCascadeData cascades[SDFGI::MAX_CASCADES];
};
struct VoxelGIData {
float xform[16]; // 64 - 64
float bounds[3]; // 12 - 76
float dynamic_range; // 4 - 80
float bias; // 4 - 84
float normal_bias; // 4 - 88
uint32_t blend_ambient; // 4 - 92
uint32_t mipmaps; // 4 - 96
};
struct PushConstant {
int32_t screen_size[2];
float z_near;
float z_far;
float proj_info[4];
uint32_t max_voxel_gi_instances;
uint32_t high_quality_vct;
uint32_t orthogonal;
uint32_t pad;
float cam_rotation[12];
};
RID sdfgi_ubo;
enum Mode {
MODE_VOXEL_GI,
MODE_SDFGI,
MODE_COMBINED,
MODE_HALF_RES_VOXEL_GI,
MODE_HALF_RES_SDFGI,
MODE_HALF_RES_COMBINED,
MODE_MAX
};
RID default_voxel_gi_buffer;
bool half_resolution = false;
GiShaderRD shader;
RID shader_version;
RID pipelines[MODE_MAX];
RendererSceneGIRD();
~RendererSceneGIRD();
void init(RendererStorageRD *p_storage, RendererSceneSkyRD *p_sky);
void free();
SDFGI *create_sdfgi(RendererSceneEnvironmentRD *p_env, const Vector3 &p_world_position, uint32_t p_requested_history_size);
void setup_voxel_gi_instances(RID p_render_buffers, const Transform3D &p_transform, const PagedArray<RID> &p_voxel_gi_instances, uint32_t &r_voxel_gi_instances_used, RendererSceneRenderRD *p_scene_render);
void process_gi(RID p_render_buffers, RID p_normal_roughness_buffer, RID p_voxel_gi_buffer, RID p_environment, const CameraMatrix &p_projection, const Transform3D &p_transform, const PagedArray<RID> &p_voxel_gi_instances, RendererSceneRenderRD *p_scene_render);
RID voxel_gi_instance_create(RID p_base);
void voxel_gi_instance_set_transform_to_data(RID p_probe, const Transform3D &p_xform);
bool voxel_gi_needs_update(RID p_probe) const;
void voxel_gi_update(RID p_probe, bool p_update_light_instances, const Vector<RID> &p_light_instances, const PagedArray<RendererSceneRender::GeometryInstance *> &p_dynamic_objects, RendererSceneRenderRD *p_scene_render);
void debug_voxel_gi(RID p_voxel_gi, RD::DrawListID p_draw_list, RID p_framebuffer, const CameraMatrix &p_camera_with_transform, bool p_lighting, bool p_emission, float p_alpha);
};
#endif /* !RENDERING_SERVER_SCENE_GI_RD_H */
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