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- disabled the buffer reallocation option for the light buffer.

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The entire idea with CPU side buffering simply can not work since the buffer is being used live. To compensate the buffer's size was doubled.
This commit is contained in:
Christoph Oelckers 2018-10-29 21:52:47 +01:00
parent 2e02b7e555
commit b56e80a556
3 changed files with 4 additions and 38 deletions
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35
src/hwrenderer/dynlights/hw_lightbuffer.cpp
View file

@ -36,7 +36,7 @@ static const int ELEMENT_SIZE = (4*sizeof(float));
FLightBuffer::FLightBuffer()
{
int maxNumberOfLights = 40000;
int maxNumberOfLights = 80000;
mBufferSize = maxNumberOfLights * ELEMENTS_PER_LIGHT;
mByteSize = mBufferSize * ELEMENT_SIZE;
@ -77,28 +77,6 @@ void FLightBuffer::Clear()
mIndex = 0;
}
void FLightBuffer::CheckSize()
{
// create the new buffer's storage (at least twice as large as the old one)
int oldbytesize = mByteSize;
unsigned int bufferbytesize = mBufferedData.Size() * 4;
if (bufferbytesize > mByteSize)
{
mByteSize += bufferbytesize;
}
else
{
mByteSize *= 2;
}
mBufferSize = mByteSize / ELEMENT_SIZE;
mBuffer->Resize(mByteSize);
Map();
memcpy(((float*)mBuffer->Memory()) + mBlockSize*4, &mBufferedData[0], bufferbytesize);
mBufferedData.Clear();
Unmap();
}
int FLightBuffer::UploadLights(FDynLightData &data)
{
// All meaasurements here are in vec4's.
@ -145,16 +123,7 @@ int FLightBuffer::UploadLights(FDynLightData &data)
}
else
{
// The buffered data always starts at the old buffer's end to avoid more extensive synchronization.
std::lock_guard<std::mutex> lock(mBufferMutex);
auto index = mBufferedData.Reserve(totalsize);
float *copyptr =&mBufferedData[index];
// The copy operation must be inside the mutexed block of code here!
memcpy(&copyptr[0], parmcnt, ELEMENT_SIZE);
memcpy(&copyptr[4], &data.arrays[0][0], size0 * ELEMENT_SIZE);
memcpy(&copyptr[4 + 4*size0], &data.arrays[1][0], size1 * ELEMENT_SIZE);
memcpy(&copyptr[4 + 4*(size0 + size1)], &data.arrays[2][0], size2 * ELEMENT_SIZE);
return mBufferSize + index;
return -1; // Buffer is full. Since it is being used live at the point of the upload we cannot do much here but to abort.
}
}

5
src/hwrenderer/dynlights/hw_lightbuffer.h
View file

@ -22,9 +22,6 @@ class FLightBuffer
unsigned int mByteSize;
unsigned int mMaxUploadSize;
std::mutex mBufferMutex;
TArray<float> mBufferedData;
void CheckSize();
public:
@ -34,7 +31,7 @@ public:
void Clear();
int UploadLights(FDynLightData &data);
void Map() { mBuffer->Map(); }
void Unmap() { mBuffer->Unmap(); if (mBufferedData.Size() > 0) CheckSize(); }
void Unmap() { mBuffer->Unmap(); }
unsigned int GetBlockSize() const { return mBlockSize; }
bool GetBufferType() const { return mBufferType; }

2
src/hwrenderer/scene/hw_flats.cpp
View file

@ -184,7 +184,7 @@ void GLFlat::DrawSubsectors(HWDrawInfo *di, FRenderState &state)
{
auto vcount = sector->ibocount;
if (screen->BuffersArePersistent())
if (level.HasDynamicLights && screen->BuffersArePersistent())
{
SetupLights(di, sector->lighthead, lightdata, sector->PortalGroup);
}