140 lines
4.4 KiB
C++
140 lines
4.4 KiB
C++
// Copyright (c) Wojciech Figat. All rights reserved.
|
|
|
|
#include "ParticlesData.h"
|
|
#include "ParticleEmitter.h"
|
|
#include "Engine/Graphics/GPUBuffer.h"
|
|
#include "Engine/Graphics/GPUDevice.h"
|
|
#include "Engine/Graphics/DynamicBuffer.h"
|
|
#include "Engine/Profiler/ProfilerMemory.h"
|
|
|
|
ParticleBuffer::ParticleBuffer()
|
|
{
|
|
}
|
|
|
|
ParticleBuffer::~ParticleBuffer()
|
|
{
|
|
SAFE_DELETE_GPU_RESOURCE(GPU.Buffer);
|
|
SAFE_DELETE_GPU_RESOURCE(GPU.BufferSecondary);
|
|
SAFE_DELETE_GPU_RESOURCE(GPU.IndirectDrawArgsBuffer);
|
|
SAFE_DELETE_GPU_RESOURCE(GPU.SortingKeysBuffer);
|
|
SAFE_DELETE_GPU_RESOURCE(GPU.SortedIndices);
|
|
SAFE_DELETE(GPU.RibbonIndexBufferDynamic);
|
|
SAFE_DELETE(GPU.RibbonVertexBufferDynamic);
|
|
}
|
|
|
|
bool ParticleBuffer::Init(ParticleEmitter* emitter)
|
|
{
|
|
PROFILE_MEM(Particles);
|
|
ASSERT(emitter && emitter->IsLoaded());
|
|
|
|
Version = emitter->Graph.Version;
|
|
Capacity = emitter->Capacity;
|
|
Emitter = emitter;
|
|
Layout = &emitter->Graph.Layout;
|
|
Stride = Layout->Size;
|
|
Mode = emitter->SimulationMode;
|
|
|
|
const int32 size = Capacity * Stride;
|
|
switch (Mode)
|
|
{
|
|
case ParticlesSimulationMode::CPU:
|
|
{
|
|
CPU.Count = 0;
|
|
CPU.Buffer.Resize(size);
|
|
CPU.RibbonOrder.Resize(0);
|
|
GPU.Buffer = GPUDevice::Instance->CreateBuffer(TEXT("ParticleBuffer"));
|
|
if (GPU.Buffer->Init(GPUBufferDescription::Raw(size, GPUBufferFlags::ShaderResource, GPUResourceUsage::Dynamic)))
|
|
return true;
|
|
break;
|
|
}
|
|
#if COMPILE_WITH_GPU_PARTICLES
|
|
case ParticlesSimulationMode::GPU:
|
|
{
|
|
if (!emitter->GPU.IsInitialized())
|
|
{
|
|
LOG(Warning, "GPU particles context is not initialized. Cannot create particles buffer.");
|
|
return true;
|
|
}
|
|
|
|
// Particle data buffer: attributes + counter + custom data
|
|
GPU.Buffer = GPUDevice::Instance->CreateBuffer(TEXT("ParticleBuffer A"));
|
|
if (GPU.Buffer->Init(GPUBufferDescription::Raw(size + sizeof(uint32) + emitter->GPU.CustomDataSize, GPUBufferFlags::ShaderResource | GPUBufferFlags::UnorderedAccess)))
|
|
return true;
|
|
GPU.BufferSecondary = GPUDevice::Instance->CreateBuffer(TEXT("ParticleBuffer B"));
|
|
if (GPU.BufferSecondary->Init(GPU.Buffer->GetDescription()))
|
|
return true;
|
|
GPU.IndirectDrawArgsBuffer = GPUDevice::Instance->CreateBuffer(TEXT("ParticleIndirectDrawArgsBuffer"));
|
|
GPU.PendingClear = true;
|
|
GPU.HasValidCount = false;
|
|
GPU.ParticleCounterOffset = size;
|
|
GPU.ParticlesCountMax = 0;
|
|
break;
|
|
}
|
|
#endif
|
|
default:
|
|
CRASH;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool ParticleBuffer::AllocateSortBuffer()
|
|
{
|
|
ASSERT(Emitter && GPU.SortedIndices == nullptr && GPU.SortingKeysBuffer == nullptr);
|
|
if (Emitter->Graph.SortModules.IsEmpty())
|
|
return false;
|
|
|
|
switch (Mode)
|
|
{
|
|
case ParticlesSimulationMode::CPU:
|
|
{
|
|
const int32 sortedIndicesSize = Capacity * sizeof(uint32) * Emitter->Graph.SortModules.Count();
|
|
GPU.SortedIndices = GPUDevice::Instance->CreateBuffer(TEXT("SortedIndices"));
|
|
if (GPU.SortedIndices->Init(GPUBufferDescription::Buffer(sortedIndicesSize, GPUBufferFlags::ShaderResource, PixelFormat::R32_UInt, nullptr, sizeof(uint32), GPUResourceUsage::Dynamic)))
|
|
return true;
|
|
break;
|
|
}
|
|
#if COMPILE_WITH_GPU_PARTICLES
|
|
case ParticlesSimulationMode::GPU:
|
|
{
|
|
const int32 sortedIndicesSize = Capacity * sizeof(uint32) * Emitter->Graph.SortModules.Count();
|
|
GPU.SortingKeysBuffer = GPUDevice::Instance->CreateBuffer(TEXT("ParticleSortingKeysBuffer"));
|
|
if (GPU.SortingKeysBuffer->Init(GPUBufferDescription::Structured(Capacity, sizeof(float) + sizeof(uint32), true)))
|
|
return true;
|
|
GPU.SortedIndices = GPUDevice::Instance->CreateBuffer(TEXT("SortedIndices"));
|
|
if (GPU.SortedIndices->Init(GPUBufferDescription::Buffer(sortedIndicesSize, GPUBufferFlags::ShaderResource | GPUBufferFlags::UnorderedAccess, PixelFormat::R32_UInt, nullptr, sizeof(uint32))))
|
|
return true;
|
|
break;
|
|
}
|
|
#endif
|
|
default:
|
|
CRASH;
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void ParticleBuffer::Clear()
|
|
{
|
|
switch (Mode)
|
|
{
|
|
case ParticlesSimulationMode::CPU:
|
|
{
|
|
CPU.Count = 0;
|
|
CPU.RibbonOrder.Clear();
|
|
break;
|
|
}
|
|
#if COMPILE_WITH_GPU_PARTICLES
|
|
case ParticlesSimulationMode::GPU:
|
|
{
|
|
GPU.PendingClear = true;
|
|
GPU.HasValidCount = false;
|
|
break;
|
|
}
|
|
#endif
|
|
default:
|
|
CRASH;
|
|
}
|
|
}
|