GoaLitiuM/FlaxEngine
1
0
Fork 0
Code Issues Pull Requests Actions 7 Packages Projects Releases Wiki Activity

Add minor optimizations to particles drawing

Browse Source
This commit is contained in:
Wojtek Figat
2025-08-08 13:11:05 +02:00
parent 0369d9b2cb
commit 90d1e63b58
5 changed files with 33 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
Source/Engine/Renderer/Utils/BitonicSort.cpp
View File

@@ -6,15 +6,9 @@
#include "Engine/Graphics/GPUContext.h"
#include "Engine/Graphics/GPULimits.h"
// The sorting keys buffer item structure template. Matches the shader type.
struct Item
{
float Key;
uint32 Value;
};
GPU_CB_STRUCT(Data {
Item NullItem;
float NullItemKey;
uint32 NullItemValue;
uint32 CounterOffset;
uint32 MaxIterations;
uint32 LoopK;
@@ -86,22 +80,22 @@ void BitonicSort::Dispose()
_shader = nullptr;
}
void BitonicSort::Sort(GPUContext* context, GPUBuffer* sortingKeysBuffer, GPUBuffer* countBuffer, uint32 counterOffset, bool sortAscending, GPUBuffer* sortedIndicesBuffer)
void BitonicSort::Sort(GPUContext* context, GPUBuffer* sortingKeysBuffer, GPUBuffer* countBuffer, uint32 counterOffset, bool sortAscending, GPUBuffer* sortedIndicesBuffer, uint32 maxElements)
{
ASSERT(context && sortingKeysBuffer && countBuffer);
if (checkIfSkipPass())
return;
PROFILE_GPU_CPU("Bitonic Sort");
const uint32 elementSizeBytes = sizeof(uint64);
const uint32 maxNumElements = sortingKeysBuffer->GetSize() / elementSizeBytes;
const uint32 maxNumElements = maxElements != 0 ? maxElements : sortingKeysBuffer->GetSize() / elementSizeBytes;
const uint32 alignedMaxNumElements = Math::RoundUpToPowerOf2(maxNumElements);
const uint32 maxIterations = (uint32)Math::Log2((float)Math::Max(2048u, alignedMaxNumElements)) - 10;
// Setup constants buffer
Data data;
data.CounterOffset = counterOffset;
data.NullItem.Key = sortAscending ? MAX_float : -MAX_float;
data.NullItem.Value = 0;
data.NullItemKey = sortAscending ? MAX_float : -MAX_float;
data.NullItemValue = 0;
data.KeySign = sortAscending ? -1.0f : 1.0f;
data.MaxIterations = maxIterations;
data.LoopK = 0;
@@ -128,7 +122,6 @@ void BitonicSort::Sort(GPUContext* context, GPUBuffer* sortingKeysBuffer, GPUBuf
data.LoopK = k;
data.LoopJ = j;
context->UpdateCB(_cb, &data);
context->BindCB(0, _cb);
context->DispatchIndirect(_outerSortCS, _dispatchArgsBuffer, indirectArgsOffset);
indirectArgsOffset += sizeof(GPUDispatchIndirectArgs);