[871] | 1 | #include "Environment.h"
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| 2 | #include "RenderSampler.h"
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| 3 | #include "GlRenderer.h"
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| 4 |
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| 5 | namespace GtpVisibilityPreprocessor {
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| 6 |
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| 7 |
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| 8 | RenderSampler::RenderSampler():Preprocessor()
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| 9 | {
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| 10 | environment->GetIntValue("RenderSampler.samples", mSamples);
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[991] | 11 | cout << "number of render samples: " << mSamples << endl;
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[871] | 12 | }
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| 13 |
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| 14 | bool
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| 15 | RenderSampler::ComputeVisibility()
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| 16 | {
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[991] | 17 | long startTime = GetTime();
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| 18 |
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| 19 | int histoMaxVal = 0;
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| 20 | int histoIntervals = 0;
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| 21 |
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| 22 | environment->GetIntValue("Preprocessor.histogram.maxValue", histoMaxVal);
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| 23 | environment->GetIntValue("Preprocessor.histogram.intervals", histoIntervals);
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[871] | 24 |
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[991] | 25 | const int intervals = histoIntervals;
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| 26 |
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| 27 | cout << "starting sampling of render cost ... ";
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| 28 |
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| 29 | vector<RenderCostSample> samples;
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[871] | 30 |
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[991] | 31 | if (renderer)
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| 32 | {cout << "here18 " << mSamples << endl;
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| 33 | renderer->SampleRenderCost(mSamples, samples);
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| 34 | }
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[871] | 35 |
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[991] | 36 | cout << "finished in " << TimeDiff(startTime, GetTime()) * 1e-3 << " secs" << endl;
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[871] | 37 |
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| 38 |
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[991] | 39 | //-- Evaluate properties
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| 40 |
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| 41 |
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| 42 | //-- compute histogram from the samples
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| 43 | int avgPvs = 0;
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| 44 | int maxPvs = 0;
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| 45 |
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| 46 | vector<int> histogram(intervals);
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[871] | 47 |
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[991] | 48 | int i;
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[871] | 49 |
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[991] | 50 | /// initialise histogram
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| 51 | for (i = 0; i < intervals; ++ i)
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| 52 | {
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| 53 | histogram[i] = 0;
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| 54 | }
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[871] | 55 |
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[991] | 56 |
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| 57 |
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| 58 | for (i = 0; i < mSamples; ++ i)
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| 59 | {
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| 60 | if (samples[i].mVisibleObjects > maxPvs)
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| 61 | {
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| 62 | maxPvs = samples[i].mVisibleObjects;
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| 63 | }
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| 64 |
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| 65 | avgPvs += samples[i].mVisibleObjects;
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| 66 | }
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| 67 |
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| 68 | // sometimes need need to unifiy maximum pvs to compare with other method's histograms
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| 69 | // => choose histoMaxPvs accordingly (higher than all pvsss)
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| 70 | const int maxVal = max(histoMaxVal, maxPvs);
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| 71 |
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| 72 | for (i = 0; i < mSamples; ++ i)
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| 73 | {
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| 74 | const int bin = (samples[i].mVisibleObjects * intervals) / maxVal;
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| 75 |
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| 76 | ++ histogram[bin];
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| 77 | }
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| 78 |
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| 79 |
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| 80 | //-- output the histogram
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| 81 |
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| 82 | const string filename("fromPointHisto.log");
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| 83 | std::ofstream outstream;
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| 84 | outstream.open(filename.c_str());
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| 85 |
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| 86 |
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| 87 |
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| 88 | Debug << "****************************************" << endl;
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| 89 | Debug << "From point queries: " << endl;
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| 90 |
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| 91 | for (i = 0; i < intervals; ++ i)
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| 92 | {
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| 93 | outstream << "#Pass\n" << i << endl;
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| 94 | outstream << "#Pvs\n" << histogram[i] << endl;
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| 95 | //cout << histogram[i] << endl;
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| 96 | }
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| 97 |
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| 98 | outstream.close();
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| 99 |
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| 100 | avgPvs /= mSamples;
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| 101 |
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| 102 | Debug << "max pvs: " << maxPvs << endl;
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| 103 | Debug << "avg pvs: " << avgPvs << endl;
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[871] | 104 |
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[991] | 105 | return true;
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[871] | 106 | }
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| 107 |
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[991] | 108 |
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| 109 |
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[871] | 110 | }
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