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Tightening memory usage for shadow volumes.

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This commit is contained in:
Dario Manesku 2013-10-24 21:56:13 +01:00
parent 4cb2ab30f2
commit ad0cdd6f1c
1 changed files with 14 additions and 7 deletions
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21
examples/14-shadowvolumes/shadowvolumes.cpp
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@ -1275,7 +1275,7 @@ struct ShadowVolumeAllocator
uint8_t* m_mem;
uint8_t* m_ptr;
bool m_firstPage;
static const uint32_t PAGE_SIZE = 1 << 28; //256 MB
static const uint32_t PAGE_SIZE = 180 << 20; //180 MB, enough for 125 capped shadow volume instances
};
static ShadowVolumeAllocator s_svAllocator;
@ -1418,17 +1418,24 @@ void shadowVolumeCreate(ShadowVolume& _shadowVolume
float m_k;
};
VertexData* verticesSide = (VertexData*) s_svAllocator.alloc (100000 * sizeof(VertexData) );
uint16_t* indicesSide = (uint16_t*) s_svAllocator.alloc (100000 * 3*sizeof(uint16_t) );
uint16_t* indicesFrontCap = (uint16_t*) s_svAllocator.alloc (100000 * 3*sizeof(uint16_t) );
uint16_t* indicesBackCap = (uint16_t*) s_svAllocator.alloc (100000 * 3*sizeof(uint16_t) );
bool cap = (ShadowVolumeImpl::DepthFail == _impl);
VertexData* verticesSide = (VertexData*) s_svAllocator.alloc (20000 * sizeof(VertexData) );
uint16_t* indicesSide = (uint16_t*) s_svAllocator.alloc (20000 * 3*sizeof(uint16_t) );
uint16_t* indicesFrontCap = 0;
uint16_t* indicesBackCap = 0;
if (cap)
{
indicesFrontCap = (uint16_t*)s_svAllocator.alloc(80000 * 3*sizeof(uint16_t) );
indicesBackCap = (uint16_t*)s_svAllocator.alloc(80000 * 3*sizeof(uint16_t) );
}
uint32_t vsideI = 0;
uint32_t sideI = 0;
uint32_t frontCapI = 0;
uint32_t backCapI = 0;
bool cap = (ShadowVolumeImpl::DepthFail == _impl);
uint16_t indexSide = 0;
if (ShadowVolumeAlgorithm::FaceBased == _algo)
@ -2153,7 +2160,7 @@ int _main_(int /*_argc*/, char** /*_argv*/)
if (Scene1 == currentScene)
{
imguiSlider("Instance count", &settings_instanceCount, 1.0f, 49.0f, 1.0f);
imguiSlider("Instance count", &settings_instanceCount, 1.0f, 25.0f, 1.0f);
}
imguiLabel("CPU Time: %7.1f [ms]", double(profTime)*toMs);