FGFS-4.1/OpenSceneGraph
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Implement first pass at texture compile estimation

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This commit is contained in:
Robert Osfield 2011-01-26 18:47:55 +00:00
parent a4f2cbe577
commit 373f3931e9
3 changed files with 37 additions and 10 deletions
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3
include/osgUtil/GraphicsCostEstimator
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@ -39,7 +39,6 @@ struct ClampedLinearCostFunction1D
double operator() (unsigned int input) const
{
OSG_NOTICE<<"ClampedLinearCostFunction1D::operator("<<input<<")"<<std::endl;
return _cost0 + _dcost_di * double(input<=_min_input ? 0u : input-_min_input);
}
double _cost0;
@ -115,7 +114,7 @@ public:
CostPair estimateCompileCost(const osg::Geometry* geometry) const { return _geometryEstimator->estimateCompileCost(geometry); }
CostPair estimateDrawCost(const osg::Geometry* geometry) const { return _geometryEstimator->estimateDrawCost(geometry); }
CostPair estimateCompileCost(const osg::Texture* texture) const { return _textureEstimator->estimateDrawCost(texture); }
CostPair estimateCompileCost(const osg::Texture* texture) const { return _textureEstimator->estimateCompileCost(texture); }
CostPair estimateDrawCost(const osg::Texture* texture) const { return _textureEstimator->estimateDrawCost(texture); }
CostPair estimateCompileCost(const osg::Program* program) const { return _programEstimator->estimateCompileCost(program); }

21
src/osgUtil/GraphicsCostEstimator.cpp
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@ -46,7 +46,7 @@ void GeometryCostEstimator::calibrate(osg::RenderInfo& renderInfo)
CostPair GeometryCostEstimator::estimateCompileCost(const osg::Geometry* geometry) const
{
OSG_NOTICE<<"GeometryCostEstimator::estimateCompileCost(..)"<<std::endl;
OSG_INFO<<"GeometryCostEstimator::estimateCompileCost(..)"<<std::endl;
bool usesVBO = geometry->getUseVertexBufferObjects() && geometry->areFastPathsUsed();
bool usesDL = !usesVBO && geometry->getUseDisplayList() && geometry->getSupportsDisplayList();
@ -79,7 +79,7 @@ CostPair GeometryCostEstimator::estimateCompileCost(const osg::Geometry* geometr
cost.first = _displayListCompileConstant + _displayListCompileFactor * cost.first ;
}
OSG_NOTICE<<" cost.first="<<cost.first<<std::endl;
OSG_INFO<<" cost.first="<<cost.first<<std::endl;
return cost;
}
@ -100,10 +100,16 @@ CostPair GeometryCostEstimator::estimateDrawCost(const osg::Geometry* geometry)
//
TextureCostEstimator::TextureCostEstimator()
{
setDefaults();
}
void TextureCostEstimator::setDefaults()
{
double transfer_bandwidth = 10000000000.0; // 1GB/sec
double gpu_bandwidth = 50000000000.0; // 50 GB/second
double min_time = 0.00001; // 10 nano seconds.
_compileCost.set(min_time, 1.0/transfer_bandwidth, 256); // min time 1/10th of millisecond, min size 256
_drawCost.set(min_time, 1.0/gpu_bandwidth, 256); // min time 1/10th of millisecond, min size 256
}
void TextureCostEstimator::calibrate(osg::RenderInfo& renderInfo)
@ -112,7 +118,14 @@ void TextureCostEstimator::calibrate(osg::RenderInfo& renderInfo)
CostPair TextureCostEstimator::estimateCompileCost(const osg::Texture* texture) const
{
return CostPair(0.0,0.0);
CostPair cost;
for(unsigned int i=0; i<texture->getNumImages(); ++i)
{
const osg::Image* image = texture->getImage(i);
if (image) cost.first += _compileCost(image->getTotalDataSize());
}
OSG_NOTICE<<"TextureCostEstimator::estimateCompileCost(), size="<<cost.first<<std::endl;
return cost;
}
CostPair TextureCostEstimator::estimateDrawCost(const osg::Texture* texture) const
@ -232,8 +245,6 @@ public:
CostPair cost = _gce->estimateCompileCost(geometry);
OSG_NOTICE<<"apply(Geometry), cost.first="<<cost.first<<std::endl;
_costs.first += cost.first;
_costs.second += cost.second;
}

23
src/osgUtil/IncrementalCompileOperation.cpp
View File

@ -174,7 +174,13 @@ IncrementalCompileOperation::CompileDrawableOp::CompileDrawableOp(osg::Drawable*
double IncrementalCompileOperation::CompileDrawableOp::estimatedTimeForCompile(CompileInfo& compileInfo) const
{
return 0.0;
GraphicsCostEstimator* gce = compileInfo.incrementalCompileOperation->getGraphicsCostEstimator();
osg::Geometry* geometry = _drawable->asGeometry();
if (gce && geometry)
{
return gce->estimateCompileCost(geometry).first;
}
else return 0.0;
}
bool IncrementalCompileOperation::CompileDrawableOp::compile(CompileInfo& compileInfo)
@ -191,7 +197,9 @@ IncrementalCompileOperation::CompileTextureOp::CompileTextureOp(osg::Texture* te
double IncrementalCompileOperation::CompileTextureOp::estimatedTimeForCompile(CompileInfo& compileInfo) const
{
return 0.0;
GraphicsCostEstimator* gce = compileInfo.incrementalCompileOperation->getGraphicsCostEstimator();
if (gce) return gce->estimateCompileCost(_texture.get()).first;
else return 0.0;
}
bool IncrementalCompileOperation::CompileTextureOp::compile(CompileInfo& compileInfo)
@ -224,7 +232,9 @@ IncrementalCompileOperation::CompileProgramOp::CompileProgramOp(osg::Program* pr
double IncrementalCompileOperation::CompileProgramOp::estimatedTimeForCompile(CompileInfo& compileInfo) const
{
return 0.0;
GraphicsCostEstimator* gce = compileInfo.incrementalCompileOperation->getGraphicsCostEstimator();
if (gce) return gce->estimateCompileCost(_program.get()).first;
else return 0.0;
}
bool IncrementalCompileOperation::CompileProgramOp::compile(CompileInfo& compileInfo)
@ -276,14 +286,21 @@ bool IncrementalCompileOperation::CompileList::compile(CompileInfo& compileInfo)
itr != _compileOps.end() && compileInfo.availableTime()>0.0 && compileInfo.maxNumObjectsToCompile>0;
)
{
double estimatedCompileCost = (*itr)->estimatedTimeForCompile(compileInfo);
--compileInfo.maxNumObjectsToCompile;
osg::ElapsedTime timer;
CompileOps::iterator saved_itr(itr);
++itr;
if ((*saved_itr)->compile(compileInfo))
{
_compileOps.erase(saved_itr);
}
double actualCompileCost = timer.elapsedTime();
OSG_NOTICE<<"IncrementalCompileOperation::CompileList::compile() estimatedTimForCompile= "<<estimatedCompileCost<<", actual="<<actualCompileCost<<", ratio="<<(estimatedCompileCost/actualCompileCost)<<std::endl;
}
return empty();
}