AnotherFoxGuy/polyvox
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Applied ker's patch for prefetch and flush.

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This commit is contained in:
David Williams
2011-03-22 21:44:12 +00:00
parent c7e452f537
commit 78c5884303
5 changed files with 99 additions and 4 deletions
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15
examples/Paging/main.cpp
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@ -250,7 +250,7 @@ int main(int argc, char *argv[])
openGLWidget.show();
//Create an empty volume and then place a sphere in it
Volume<MaterialDensityPair44> volData(&load, &unload, 128);
Volume<MaterialDensityPair44> volData(&load, &unload, 256);
volData.setMaxNumberOfBlocksInMemory(4096);
volData.setMaxNumberOfUncompressedBlocks(64);
@ -267,7 +267,19 @@ int main(int argc, char *argv[])
//createPerlinTerrain(volData);
//createPerlinVolumeSlow(volData);
std::cout << "Memory usage: " << (volData.calculateSizeInBytes()/1024.0/1024.0) << "MB" << std::endl;
std::cout << "Compression ratio: 1 to " << (1.0/(volData.calculateCompressionRatio())) << std::endl;
//volData.setBlockCacheSize(64);
PolyVox::Region reg(Vector3DInt32(-255,0,0), Vector3DInt32(255,1024,255));
std::cout << "Prefetching region: " << reg.getLowerCorner() << " -> " << reg.getUpperCorner() << std::endl;
volData.prefetchRegion(reg);
std::cout << "Memory usage: " << (volData.calculateSizeInBytes()/1024.0/1024.0) << "MB" << std::endl;
std::cout << "Compression ratio: 1 to " << (1.0/(volData.calculateCompressionRatio())) << std::endl;
PolyVox::Region reg2(Vector3DInt32(0,0,0), Vector3DInt32(500,500,500));
std::cout << "Flushing region: " << reg2.getLowerCorner() << " -> " << reg2.getUpperCorner() << std::endl;
uint32_t voxelsFlushed = volData.flushRegion(reg2);
Vector3DInt32 size = reg2.getUpperCorner() - reg2.getLowerCorner() + Vector3DInt32(1,1,1);
uint32_t voxelsFlushed2 = size.getX()*size.getY()*size.getZ();
std::cout << voxelsFlushed << " Voxels were unloaded, while " << voxelsFlushed2 << " should have been unloaded" << std::endl;
std::cout << "Memory usage: " << (volData.calculateSizeInBytes()/1024.0/1024.0) << "MB" << std::endl;
std::cout << "Compression ratio: 1 to " << (1.0/(volData.calculateCompressionRatio())) << std::endl;
@ -287,7 +299,6 @@ int main(int argc, char *argv[])
//Extract the surface
SurfaceMesh<PositionMaterialNormal> mesh;
//CubicSurfaceExtractorWithNormals<MaterialDensityPair44> surfaceExtractor(&volData, volData.getEnclosingRegion(), &mesh);
PolyVox::Region reg(Vector3DInt32(-255,0,0), Vector3DInt32(255,1024,255));
SurfaceExtractor<MaterialDensityPair44> surfaceExtractor(&volData, reg, &mesh);
//CubicSurfaceExtractorWithNormals<MaterialDensityPair44> surfaceExtractor(&volData, reg, &mesh);
surfaceExtractor.execute();