diff options
author | reduz <reduzio@gmail.com> | 2020-09-06 09:18:10 -0300 |
---|---|---|
committer | reduz <reduzio@gmail.com> | 2020-09-06 10:29:27 -0300 |
commit | d0bddf53c5415c1f127d51dba5f94dd485def0e3 (patch) | |
tree | 4de06634b4f80494f436368f96731d138153c0d0 /servers/rendering/rasterizer_rd | |
parent | ceed52493696dd7bc7559040ecb98b225fc0754c (diff) |
Implement manual particle emission and particle sub emitters.
Diffstat (limited to 'servers/rendering/rasterizer_rd')
3 files changed, 421 insertions, 90 deletions
diff --git a/servers/rendering/rasterizer_rd/rasterizer_storage_rd.cpp b/servers/rendering/rasterizer_rd/rasterizer_storage_rd.cpp index e09926c97e..d751f474cd 100644 --- a/servers/rendering/rasterizer_rd/rasterizer_storage_rd.cpp +++ b/servers/rendering/rasterizer_rd/rasterizer_storage_rd.cpp @@ -3119,24 +3119,40 @@ bool RasterizerStorageRD::particles_get_emitting(RID p_particles) { return particles->emitting; } +void RasterizerStorageRD::_particles_free_data(Particles *particles) { + if (!particles->particle_buffer.is_valid()) { + return; + } + RD::get_singleton()->free(particles->particle_buffer); + RD::get_singleton()->free(particles->frame_params_buffer); + RD::get_singleton()->free(particles->particle_instance_buffer); + particles->particles_transforms_buffer_uniform_set = RID(); + particles->particle_buffer = RID(); + + if (particles->particles_sort_buffer.is_valid()) { + RD::get_singleton()->free(particles->particles_sort_buffer); + particles->particles_sort_buffer = RID(); + } + + if (particles->emission_buffer != nullptr) { + particles->emission_buffer = nullptr; + particles->emission_buffer_data.clear(); + RD::get_singleton()->free(particles->emission_storage_buffer); + particles->emission_storage_buffer = RID(); + } +} + void RasterizerStorageRD::particles_set_amount(RID p_particles, int p_amount) { Particles *particles = particles_owner.getornull(p_particles); ERR_FAIL_COND(!particles); - particles->amount = p_amount; + if (particles->amount == p_amount) { + return; + } - if (particles->particle_buffer.is_valid()) { - RD::get_singleton()->free(particles->particle_buffer); - RD::get_singleton()->free(particles->frame_params_buffer); - RD::get_singleton()->free(particles->particle_instance_buffer); - particles->particles_transforms_buffer_uniform_set = RID(); - particles->particle_buffer = RID(); + _particles_free_data(particles); - if (particles->particles_sort_buffer.is_valid()) { - RD::get_singleton()->free(particles->particles_sort_buffer); - particles->particles_sort_buffer = RID(); - } - } + particles->amount = p_amount; if (particles->amount > 0) { particles->particle_buffer = RD::get_singleton()->storage_buffer_create(sizeof(ParticleData) * p_amount); @@ -3150,27 +3166,6 @@ void RasterizerStorageRD::particles_set_amount(RID p_particles, int p_amount) { { RD::Uniform u; u.type = RD::UNIFORM_TYPE_STORAGE_BUFFER; - u.binding = 0; - u.ids.push_back(particles->frame_params_buffer); - uniforms.push_back(u); - } - { - RD::Uniform u; - u.type = RD::UNIFORM_TYPE_STORAGE_BUFFER; - u.binding = 1; - u.ids.push_back(particles->particle_buffer); - uniforms.push_back(u); - } - - particles->particles_material_uniform_set = RD::get_singleton()->uniform_set_create(uniforms, particles_shader.default_shader_rd, 1); - } - - { - Vector<RD::Uniform> uniforms; - - { - RD::Uniform u; - u.type = RD::UNIFORM_TYPE_STORAGE_BUFFER; u.binding = 1; u.ids.push_back(particles->particle_buffer); uniforms.push_back(u); @@ -3290,6 +3285,79 @@ void RasterizerStorageRD::particles_restart(RID p_particles) { particles->restart_request = true; } +void RasterizerStorageRD::_particles_allocate_emission_buffer(Particles *particles) { + ERR_FAIL_COND(particles->emission_buffer != nullptr); + + particles->emission_buffer_data.resize(sizeof(ParticleEmissionBuffer::Data) * particles->amount + sizeof(uint32_t) * 4); + zeromem(particles->emission_buffer_data.ptrw(), particles->emission_buffer_data.size()); + particles->emission_buffer = (ParticleEmissionBuffer *)particles->emission_buffer_data.ptrw(); + particles->emission_buffer->particle_max = particles->amount; + + particles->emission_storage_buffer = RD::get_singleton()->storage_buffer_create(particles->emission_buffer_data.size(), particles->emission_buffer_data); + + if (RD::get_singleton()->uniform_set_is_valid(particles->particles_material_uniform_set)) { + //will need to be re-created + RD::get_singleton()->free(particles->particles_material_uniform_set); + particles->particles_material_uniform_set = RID(); + } +} + +void RasterizerStorageRD::particles_set_subemitter(RID p_particles, RID p_subemitter_particles) { + Particles *particles = particles_owner.getornull(p_particles); + ERR_FAIL_COND(!particles); + ERR_FAIL_COND(p_particles == p_subemitter_particles); + + particles->sub_emitter = p_subemitter_particles; + + if (RD::get_singleton()->uniform_set_is_valid(particles->particles_material_uniform_set)) { + RD::get_singleton()->free(particles->particles_material_uniform_set); + particles->particles_material_uniform_set = RID(); //clear and force to re create sub emitting + } +} + +void RasterizerStorageRD::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) { + Particles *particles = particles_owner.getornull(p_particles); + ERR_FAIL_COND(!particles); + ERR_FAIL_COND(particles->amount == 0); + + if (particles->emitting) { + particles->clear = true; + particles->emitting = false; + } + + if (particles->emission_buffer == nullptr) { + _particles_allocate_emission_buffer(particles); + } + + if (particles->inactive) { + //in case it was inactive, make active again + particles->inactive = false; + particles->inactive_time = 0; + } + + int32_t idx = particles->emission_buffer->particle_count; + if (idx < particles->emission_buffer->particle_max) { + store_transform(p_transform, particles->emission_buffer->data[idx].xform); + + particles->emission_buffer->data[idx].velocity[0] = p_velocity.x; + particles->emission_buffer->data[idx].velocity[1] = p_velocity.y; + particles->emission_buffer->data[idx].velocity[2] = p_velocity.z; + + particles->emission_buffer->data[idx].custom[0] = p_custom.r; + particles->emission_buffer->data[idx].custom[1] = p_custom.g; + particles->emission_buffer->data[idx].custom[2] = p_custom.b; + particles->emission_buffer->data[idx].custom[3] = p_custom.a; + + particles->emission_buffer->data[idx].color[0] = p_color.r; + particles->emission_buffer->data[idx].color[1] = p_color.g; + particles->emission_buffer->data[idx].color[2] = p_color.b; + particles->emission_buffer->data[idx].color[3] = p_color.a; + + particles->emission_buffer->data[idx].flags = p_emit_flags; + particles->emission_buffer->particle_count++; + } +} + void RasterizerStorageRD::particles_request_process(RID p_particles) { Particles *particles = particles_owner.getornull(p_particles); ERR_FAIL_COND(!particles); @@ -3375,6 +3443,54 @@ RID RasterizerStorageRD::particles_get_draw_pass_mesh(RID p_particles, int p_pas } void RasterizerStorageRD::_particles_process(Particles *p_particles, float p_delta) { + if (p_particles->particles_material_uniform_set.is_null() || !RD::get_singleton()->uniform_set_is_valid(p_particles->particles_material_uniform_set)) { + Vector<RD::Uniform> uniforms; + + { + RD::Uniform u; + u.type = RD::UNIFORM_TYPE_STORAGE_BUFFER; + u.binding = 0; + u.ids.push_back(p_particles->frame_params_buffer); + uniforms.push_back(u); + } + { + RD::Uniform u; + u.type = RD::UNIFORM_TYPE_STORAGE_BUFFER; + u.binding = 1; + u.ids.push_back(p_particles->particle_buffer); + uniforms.push_back(u); + } + + { + RD::Uniform u; + u.type = RD::UNIFORM_TYPE_STORAGE_BUFFER; + u.binding = 2; + if (p_particles->emission_storage_buffer.is_valid()) { + u.ids.push_back(p_particles->emission_storage_buffer); + } else { + u.ids.push_back(default_rd_storage_buffer); + } + uniforms.push_back(u); + } + { + RD::Uniform u; + u.type = RD::UNIFORM_TYPE_STORAGE_BUFFER; + u.binding = 3; + Particles *sub_emitter = particles_owner.getornull(p_particles->sub_emitter); + if (sub_emitter) { + if (sub_emitter->emission_buffer == nullptr) { //no emission buffer, allocate emission buffer + _particles_allocate_emission_buffer(sub_emitter); + } + u.ids.push_back(sub_emitter->emission_storage_buffer); + } else { + u.ids.push_back(default_rd_storage_buffer); + } + uniforms.push_back(u); + } + + p_particles->particles_material_uniform_set = RD::get_singleton()->uniform_set_create(uniforms, particles_shader.default_shader_rd, 1); + } + float new_phase = Math::fmod((float)p_particles->phase + (p_delta / p_particles->lifetime) * p_particles->speed_scale, (float)1.0); ParticlesFrameParams &frame_params = p_particles->frame_params; @@ -3416,6 +3532,36 @@ void RasterizerStorageRD::_particles_process(Particles *p_particles, float p_del push_constant.lifetime = p_particles->lifetime; push_constant.trail_size = 1; push_constant.use_fractional_delta = p_particles->fractional_delta; + push_constant.sub_emitter_mode = !p_particles->emitting && p_particles->emission_buffer && (p_particles->emission_buffer->particle_count > 0 || p_particles->force_sub_emit); + + p_particles->force_sub_emit = false; //reset + + Particles *sub_emitter = particles_owner.getornull(p_particles->sub_emitter); + + if (sub_emitter && sub_emitter->emission_storage_buffer.is_valid()) { + // print_line("updating subemitter buffer"); + int32_t zero[4] = { 0, sub_emitter->amount, 0, 0 }; + RD::get_singleton()->buffer_update(sub_emitter->emission_storage_buffer, 0, sizeof(uint32_t) * 4, zero, true); + push_constant.can_emit = true; + + if (sub_emitter->emitting) { + sub_emitter->emitting = false; + sub_emitter->clear = true; //will need to clear if it was emitting, sorry + } + //make sure the sub emitter processes particles too + sub_emitter->inactive = false; + sub_emitter->inactive_time = 0; + + sub_emitter->force_sub_emit = true; + + } else { + push_constant.can_emit = false; + } + + if (p_particles->emission_buffer && p_particles->emission_buffer->particle_count) { + RD::get_singleton()->buffer_update(p_particles->emission_storage_buffer, 0, sizeof(uint32_t) * 4 + sizeof(ParticleEmissionBuffer::Data) * p_particles->emission_buffer->particle_count, p_particles->emission_buffer, true); + p_particles->emission_buffer->particle_count = 0; + } p_particles->clear = false; @@ -3617,9 +3763,6 @@ void RasterizerStorageRD::update_particles() { RD::get_singleton()->compute_list_end(); } - particle_update_list = particles->update_list; - particles->update_list = nullptr; - particles->instance_dependency.instance_notify_changed(true, false); //make sure shadows are updated } } @@ -6519,6 +6662,11 @@ bool RasterizerStorageRD::free(RID p_rid) { light->instance_dependency.instance_notify_deleted(p_rid); light_owner.free(p_rid); + } else if (particles_owner.owns(p_rid)) { + Particles *particles = particles_owner.getornull(p_rid); + _particles_free_data(particles); + particles->instance_dependency.instance_notify_deleted(p_rid); + particles_owner.free(p_rid); } else if (render_target_owner.owns(p_rid)) { RenderTarget *rt = render_target_owner.getornull(p_rid); @@ -7013,6 +7161,17 @@ RasterizerStorageRD::RasterizerStorageRD() { //actions.renames["GRAVITY"] = "current_gravity"; actions.renames["EMISSION_TRANSFORM"] = "FRAME.emission_transform"; actions.renames["RANDOM_SEED"] = "FRAME.random_seed"; + actions.renames["FLAG_EMIT_POSITION"] = "EMISSION_FLAG_HAS_POSITION"; + actions.renames["FLAG_EMIT_ROT_SCALE"] = "EMISSION_FLAG_HAS_ROTATION_SCALE"; + actions.renames["FLAG_EMIT_VELOCITY"] = "EMISSION_FLAG_HAS_VELOCITY"; + actions.renames["FLAG_EMIT_COLOR"] = "EMISSION_FLAG_HAS_COLOR"; + actions.renames["FLAG_EMIT_CUSTOM"] = "EMISSION_FLAG_HAS_CUSTOM"; + actions.renames["RESTART_POSITION"] = "restart_position"; + actions.renames["RESTART_ROT_SCALE"] = "restart_rotation_scale"; + actions.renames["RESTART_VELOCITY"] = "restart_velocity"; + actions.renames["RESTART_COLOR"] = "restart_color"; + actions.renames["RESTART_CUSTOM"] = "restart_custom"; + actions.renames["emit_particle"] = "emit_particle"; actions.render_mode_defines["disable_force"] = "#define DISABLE_FORCE\n"; actions.render_mode_defines["disable_velocity"] = "#define DISABLE_VELOCITY\n"; @@ -7075,6 +7234,8 @@ RasterizerStorageRD::RasterizerStorageRD() { particles_shader.base_uniform_set = RD::get_singleton()->uniform_set_create(uniforms, particles_shader.default_shader_rd, 0); } + default_rd_storage_buffer = RD::get_singleton()->storage_buffer_create(sizeof(uint32_t) * 4); + { Vector<String> copy_modes; copy_modes.push_back("\n#define MODE_FILL_INSTANCES\n"); @@ -7115,6 +7276,8 @@ RasterizerStorageRD::~RasterizerStorageRD() { } giprobe_sdf_shader.version_free(giprobe_sdf_shader_version); + RD::get_singleton()->free(default_rd_storage_buffer); + if (decal_atlas.textures.size()) { ERR_PRINT("Decal Atlas: " + itos(decal_atlas.textures.size()) + " textures were not removed from the atlas."); } diff --git a/servers/rendering/rasterizer_rd/rasterizer_storage_rd.h b/servers/rendering/rasterizer_rd/rasterizer_storage_rd.h index e09b4a52eb..cecae6bbb2 100644 --- a/servers/rendering/rasterizer_rd/rasterizer_storage_rd.h +++ b/servers/rendering/rasterizer_rd/rasterizer_storage_rd.h @@ -249,6 +249,7 @@ private: RID default_rd_textures[DEFAULT_RD_TEXTURE_MAX]; RID default_rd_samplers[RS::CANVAS_ITEM_TEXTURE_FILTER_MAX][RS::CANVAS_ITEM_TEXTURE_REPEAT_MAX]; + RID default_rd_storage_buffer; /* DECAL ATLAS */ @@ -482,6 +483,25 @@ private: float emission_transform[16]; }; + struct ParticleEmissionBufferData { + }; + + struct ParticleEmissionBuffer { + struct Data { + float xform[16]; + float velocity[3]; + uint32_t flags; + float color[4]; + float custom[4]; + }; + + int32_t particle_count; + int32_t particle_max; + uint32_t pad1; + uint32_t pad2; + Data data[1]; //its 2020 and empty arrays are still non standard in C++ + }; + struct Particles { bool inactive; float inactive_time; @@ -515,6 +535,8 @@ private: bool dirty = false; Particles *update_list = nullptr; + RID sub_emitter; + float phase; float prev_phase; uint64_t prev_ticks; @@ -530,8 +552,15 @@ private: bool clear; + bool force_sub_emit = false; + Transform emission_transform; + Vector<uint8_t> emission_buffer_data; + + ParticleEmissionBuffer *emission_buffer = nullptr; + RID emission_storage_buffer; + Particles() : inactive(true), inactive_time(0.0), @@ -562,6 +591,8 @@ private: }; void _particles_process(Particles *p_particles, float p_delta); + void _particles_allocate_emission_buffer(Particles *particles); + void _particles_free_data(Particles *particles); struct ParticlesShader { struct PushConstant { @@ -569,8 +600,11 @@ private: uint32_t clear; uint32_t total_particles; uint32_t trail_size; + uint32_t use_fractional_delta; - uint32_t pad[3]; + uint32_t sub_emitter_mode; + uint32_t can_emit; + uint32_t pad; }; ParticlesShaderRD shader; @@ -1650,6 +1684,8 @@ public: void particles_set_fixed_fps(RID p_particles, int p_fps); void particles_set_fractional_delta(RID p_particles, bool p_enable); 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); void particles_set_draw_order(RID p_particles, RS::ParticlesDrawOrder p_order); diff --git a/servers/rendering/rasterizer_rd/shaders/particles.glsl b/servers/rendering/rasterizer_rd/shaders/particles.glsl index 7cdedfcbfe..3de807b57c 100644 --- a/servers/rendering/rasterizer_rd/shaders/particles.glsl +++ b/servers/rendering/rasterizer_rd/shaders/particles.glsl @@ -66,6 +66,38 @@ layout(set = 1, binding = 1, std430) restrict buffer Particles { } particles; +#define EMISSION_FLAG_HAS_POSITION 1 +#define EMISSION_FLAG_HAS_ROTATION_SCALE 2 +#define EMISSION_FLAG_HAS_VELOCITY 4 +#define EMISSION_FLAG_HAS_COLOR 8 +#define EMISSION_FLAG_HAS_CUSTOM 16 + +struct ParticleEmission { + mat4 xform; + vec3 velocity; + uint flags; + vec4 color; + vec4 custom; +}; + +layout(set = 1, binding = 2, std430) restrict volatile coherent buffer SourceEmission { + int particle_count; + uint pad0; + uint pad1; + uint pad2; + ParticleEmission data[]; +} +src_particles; + +layout(set = 1, binding = 3, std430) restrict volatile coherent buffer DestEmission { + int particle_count; + int particle_max; + uint pad1; + uint pad2; + ParticleEmission data[]; +} +dst_particles; + /* SET 2: MATERIAL */ #ifdef USE_MATERIAL_UNIFORMS @@ -82,7 +114,9 @@ layout(push_constant, binding = 0, std430) uniform Params { uint total_particles; uint trail_size; bool use_fractional_delta; - uint pad[3]; + bool sub_emitter_mode; + bool can_emit; + uint pad; } params; @@ -93,6 +127,51 @@ uint hash(uint x) { return x; } +bool emit_particle(mat4 p_xform, vec3 p_velocity, vec4 p_color, vec4 p_custom, uint p_flags) { + if (!params.can_emit) { + return false; + } + + bool valid = false; + + int dst_index = atomicAdd(dst_particles.particle_count, 1); + + if (dst_index >= dst_particles.particle_max) { + atomicAdd(dst_particles.particle_count, -1); + return false; + } + /* + valid = true; + + int attempts = 256; // never trust compute + while(attempts-- > 0) { + dst_index = dst_particles.particle_count; + if (dst_index == dst_particles.particle_max) { + return false; //cant emit anymore + } + + if (atomicCompSwap(dst_particles.particle_count, dst_index, dst_index +1 ) != dst_index) { + continue; + } + valid=true; + break; + } + + barrier(); + + if (!valid) { + return false; //gave up (attempts exhausted) + } +*/ + dst_particles.data[dst_index].xform = p_xform; + dst_particles.data[dst_index].velocity = p_velocity; + dst_particles.data[dst_index].color = p_color; + dst_particles.data[dst_index].custom = p_custom; + dst_particles.data[dst_index].flags = p_flags; + + return true; +} + /* clang-format off */ COMPUTE_SHADER_GLOBALS @@ -118,76 +197,129 @@ void main() { float mass = 1.0; - float restart_phase = float(index) / float(params.total_particles); + bool restart = false; - if (FRAME.randomness > 0.0) { - uint seed = FRAME.cycle; - if (restart_phase >= FRAME.system_phase) { - seed -= uint(1); - } - seed *= uint(params.total_particles); - seed += uint(index); - float random = float(hash(seed) % uint(65536)) / 65536.0; - restart_phase += FRAME.randomness * random * 1.0 / float(params.total_particles); + bool restart_position = false; + bool restart_rotation_scale = false; + bool restart_velocity = false; + bool restart_color = false; + bool restart_custom = false; + + if (params.clear) { + PARTICLE.color = vec4(1.0); + PARTICLE.custom = vec4(0.0); + PARTICLE.velocity = vec3(0.0); + PARTICLE.is_active = false; + PARTICLE.xform = mat4( + vec4(1.0, 0.0, 0.0, 0.0), + vec4(0.0, 1.0, 0.0, 0.0), + vec4(0.0, 0.0, 1.0, 0.0), + vec4(0.0, 0.0, 0.0, 1.0)); } - restart_phase *= (1.0 - FRAME.explosiveness); + if (params.sub_emitter_mode) { + if (!PARTICLE.is_active) { + int src_index = atomicAdd(src_particles.particle_count, -1) - 1; - bool restart = false; + if (src_index >= 0) { + PARTICLE.is_active = true; + restart = true; - if (FRAME.system_phase > FRAME.prev_system_phase) { - // restart_phase >= prev_system_phase is used so particles emit in the first frame they are processed + if (bool(src_particles.data[src_index].flags & EMISSION_FLAG_HAS_POSITION)) { + PARTICLE.xform[3] = src_particles.data[src_index].xform[3]; + } else { + PARTICLE.xform[3] = vec4(0, 0, 0, 1); + restart_position = true; + } + if (bool(src_particles.data[src_index].flags & EMISSION_FLAG_HAS_ROTATION_SCALE)) { + PARTICLE.xform[0] = src_particles.data[src_index].xform[0]; + PARTICLE.xform[1] = src_particles.data[src_index].xform[1]; + PARTICLE.xform[2] = src_particles.data[src_index].xform[2]; + } else { + PARTICLE.xform[0] = vec4(1, 0, 0, 0); + PARTICLE.xform[1] = vec4(0, 1, 0, 0); + PARTICLE.xform[2] = vec4(0, 0, 1, 0); + restart_rotation_scale = true; + } + if (bool(src_particles.data[src_index].flags & EMISSION_FLAG_HAS_VELOCITY)) { + PARTICLE.velocity = src_particles.data[src_index].velocity; + } else { + PARTICLE.velocity = vec3(0); + restart_velocity = true; + } + if (bool(src_particles.data[src_index].flags & EMISSION_FLAG_HAS_COLOR)) { + PARTICLE.color = src_particles.data[src_index].color; + } else { + PARTICLE.color = vec4(1); + restart_color = true; + } - if (restart_phase >= FRAME.prev_system_phase && restart_phase < FRAME.system_phase) { - restart = true; - if (params.use_fractional_delta) { - local_delta = (FRAME.system_phase - restart_phase) * params.lifetime; + if (bool(src_particles.data[src_index].flags & EMISSION_FLAG_HAS_CUSTOM)) { + PARTICLE.custom = src_particles.data[src_index].custom; + } else { + PARTICLE.custom = vec4(0); + restart_custom = true; + } } } - } else if (FRAME.delta > 0.0) { - if (restart_phase >= FRAME.prev_system_phase) { - restart = true; - if (params.use_fractional_delta) { - local_delta = (1.0 - restart_phase + FRAME.system_phase) * params.lifetime; - } + } else if (FRAME.emitting) { + float restart_phase = float(index) / float(params.total_particles); - } else if (restart_phase < FRAME.system_phase) { - restart = true; - if (params.use_fractional_delta) { - local_delta = (FRAME.system_phase - restart_phase) * params.lifetime; + if (FRAME.randomness > 0.0) { + uint seed = FRAME.cycle; + if (restart_phase >= FRAME.system_phase) { + seed -= uint(1); } + seed *= uint(params.total_particles); + seed += uint(index); + float random = float(hash(seed) % uint(65536)) / 65536.0; + restart_phase += FRAME.randomness * random * 1.0 / float(params.total_particles); } - } - uint current_cycle = FRAME.cycle; + restart_phase *= (1.0 - FRAME.explosiveness); - if (FRAME.system_phase < restart_phase) { - current_cycle -= uint(1); - } + if (FRAME.system_phase > FRAME.prev_system_phase) { + // restart_phase >= prev_system_phase is used so particles emit in the first frame they are processed - uint particle_number = current_cycle * uint(params.total_particles) + particle; + if (restart_phase >= FRAME.prev_system_phase && restart_phase < FRAME.system_phase) { + restart = true; + if (params.use_fractional_delta) { + local_delta = (FRAME.system_phase - restart_phase) * params.lifetime; + } + } - if (restart) { - PARTICLE.is_active = FRAME.emitting; - } + } else if (FRAME.delta > 0.0) { + if (restart_phase >= FRAME.prev_system_phase) { + restart = true; + if (params.use_fractional_delta) { + local_delta = (1.0 - restart_phase + FRAME.system_phase) * params.lifetime; + } -#ifdef ENABLE_KEEP_DATA - if (params.clear) { -#else - if (params.clear || restart) { -#endif - PARTICLE.color = vec4(1.0); - PARTICLE.custom = vec4(0.0); - PARTICLE.velocity = vec3(0.0); - if (!restart) { - PARTICLE.is_active = false; + } else if (restart_phase < FRAME.system_phase) { + restart = true; + if (params.use_fractional_delta) { + local_delta = (FRAME.system_phase - restart_phase) * params.lifetime; + } + } + } + + uint current_cycle = FRAME.cycle; + + if (FRAME.system_phase < restart_phase) { + current_cycle -= uint(1); + } + + uint particle_number = current_cycle * uint(params.total_particles) + particle; + + if (restart) { + PARTICLE.is_active = FRAME.emitting; + restart_position = true; + restart_rotation_scale = true; + restart_velocity = true; + restart_color = true; + restart_custom = true; } - PARTICLE.xform = mat4( - vec4(1.0, 0.0, 0.0, 0.0), - vec4(0.0, 1.0, 0.0, 0.0), - vec4(0.0, 0.0, 1.0, 0.0), - vec4(0.0, 0.0, 0.0, 1.0)); } if (PARTICLE.is_active) { |