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Implement GPU Particle Collisions

Browse Source 
-Sphere Attractor
-Box Attractor
-Vector Field
-Sphere Collider
-Box Collider
-Baked SDF Collider
-Heightmap Collider
This commit is contained in:
reduz
2020-10-07 21:29:49 -03:00
parent c35005ba25
commit 26f5bd245c
32 changed files with 2947 additions and 102 deletions
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100
servers/rendering/rasterizer_rd/rasterizer_storage_rd.h
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@@ -475,6 +475,46 @@ private:
};
struct ParticlesFrameParams {
enum {
MAX_ATTRACTORS = 32,
MAX_COLLIDERS = 32,
MAX_3D_TEXTURES = 7
};
enum AttractorType {
ATTRACTOR_TYPE_SPHERE,
ATTRACTOR_TYPE_BOX,
ATTRACTOR_TYPE_VECTOR_FIELD,
};
struct Attractor {
float transform[16];
float extents[3]; //exents or radius
uint32_t type;
uint32_t texture_index; //texture index for vector field
float strength;
float attenuation;
float directionality;
};
enum CollisionType {
COLLISION_TYPE_SPHERE,
COLLISION_TYPE_BOX,
COLLISION_TYPE_SDF,
COLLISION_TYPE_HEIGHT_FIELD
};
struct Collider {
float transform[16];
float extents[3]; //exents or radius
uint32_t type;
uint32_t texture_index; //texture index for vector field
float scale;
uint32_t pad[2];
};
uint32_t emitting;
float system_phase;
float prev_system_phase;
@@ -486,9 +526,14 @@ private:
float delta;
uint32_t random_seed;
uint32_t pad[3];
uint32_t attractor_count;
uint32_t collider_count;
float particle_size;
float emission_transform[16];
Attractor attractors[MAX_ATTRACTORS];
Collider colliders[MAX_COLLIDERS];
};
struct ParticleEmissionBufferData {
@@ -536,6 +581,11 @@ private:
RID particles_material_uniform_set;
RID particles_copy_uniform_set;
RID particles_transforms_buffer_uniform_set;
RID collision_textures_uniform_set;
RID collision_3d_textures[ParticlesFrameParams::MAX_3D_TEXTURES];
uint32_t collision_3d_textures_used = 0;
RID collision_heightmap_texture;
RID particles_sort_buffer;
RID particles_sort_uniform_set;
@@ -557,6 +607,7 @@ private:
int fixed_fps;
bool fractional_delta;
float frame_remainder;
float collision_base_size;
bool clear;
@@ -569,6 +620,8 @@ private:
ParticleEmissionBuffer *emission_buffer = nullptr;
RID emission_storage_buffer;
Set<RasterizerScene::InstanceBase *> collisions;
Particles() :
inactive(true),
inactive_time(0.0),
@@ -590,6 +643,7 @@ private:
fixed_fps(0),
fractional_delta(false),
frame_remainder(0),
collision_base_size(0.01),
clear(true) {
}
@@ -704,6 +758,28 @@ private:
mutable RID_Owner<Particles> particles_owner;
/* Particles Collision */
struct ParticlesCollision {
RS::ParticlesCollisionType type = RS::PARTICLES_COLLISION_TYPE_SPHERE_ATTRACT;
uint32_t cull_mask = 0xFFFFFFFF;
float radius = 1.0;
Vector3 extents = Vector3(1, 1, 1);
float attractor_strength = 1.0;
float attractor_attenuation = 1.0;
float attractor_directionality = 0.0;
RID field_texture;
RID heightfield_texture;
RID heightfield_fb;
Size2i heightfield_fb_size;
RS::ParticlesCollisionHeightfieldResolution heightfield_resolution = RS::PARTICLES_COLLISION_HEIGHTFIELD_RESOLUTION_1024;
RasterizerScene::InstanceDependency instance_dependency;
};
mutable RID_Owner<ParticlesCollision> particles_collision_owner;
/* Skeleton */
struct Skeleton {
@@ -1691,6 +1767,7 @@ public:
void particles_set_process_material(RID p_particles, RID p_material);
void particles_set_fixed_fps(RID p_particles, int p_fps);
void particles_set_fractional_delta(RID p_particles, bool p_enable);
void particles_set_collision_base_size(RID p_particles, float p_size);
void particles_restart(RID p_particles);
void particles_emit(RID p_particles, const Transform &p_transform, const Vector3 &p_velocity, const Color &p_color, const Color &p_custom, uint32_t p_emit_flags);
void particles_set_subemitter(RID p_particles, RID p_subemitter_particles);
@@ -1748,6 +1825,27 @@ public:
return particles->particles_transforms_buffer_uniform_set;
}
virtual void particles_add_collision(RID p_particles, RasterizerScene::InstanceBase *p_instance);
virtual void particles_remove_collision(RID p_particles, RasterizerScene::InstanceBase *p_instance);
/* PARTICLES COLLISION */
virtual RID particles_collision_create();
virtual void particles_collision_set_collision_type(RID p_particles_collision, RS::ParticlesCollisionType p_type);
virtual void particles_collision_set_cull_mask(RID p_particles_collision, uint32_t p_cull_mask);
virtual void particles_collision_set_sphere_radius(RID p_particles_collision, float p_radius); //for spheres
virtual void particles_collision_set_box_extents(RID p_particles_collision, const Vector3 &p_extents); //for non-spheres
virtual void particles_collision_set_attractor_strength(RID p_particles_collision, float p_strength);
virtual void particles_collision_set_attractor_directionality(RID p_particles_collision, float p_directionality);
virtual void particles_collision_set_attractor_attenuation(RID p_particles_collision, float p_curve);
virtual void particles_collision_set_field_texture(RID p_particles_collision, RID p_texture); //for SDF and vector field, heightfield is dynamic
virtual void particles_collision_height_field_update(RID p_particles_collision); //for SDF and vector field
virtual void particles_collision_set_height_field_resolution(RID p_particles_collision, RS::ParticlesCollisionHeightfieldResolution p_resolution); //for SDF and vector field
virtual AABB particles_collision_get_aabb(RID p_particles_collision) const;
virtual Vector3 particles_collision_get_extents(RID p_particles_collision) const;
virtual bool particles_collision_is_heightfield(RID p_particles_collision) const;
RID particles_collision_get_heightfield_framebuffer(RID p_particles_collision) const;
/* GLOBAL VARIABLES API */
virtual void global_variable_add(const StringName &p_name, RS::GlobalVariableType p_type, const Variant &p_value);