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                                            pbrt4bounty

Update the Ptex submodule to better support MinGW on Windows

Hi.. if merge the latest Ptex repo is a problem, one possible alternative is apply only the MinGW patch changes to the current code. ```diff diff --git "a/src/ptex/PtexInt.h" "b/src/ptex/PtexInt.h" index...

Update the Ptex submodule to better support MinGW on Windows

Seems that the CI build fail.. I need to made more test. I'm sorry

Exhaustive light sampler + area light + GPU render = fatal error

Maybe the problem is here, in the Sample method: https://github.com/mmp/pbrt-v4/blob/master/src/pbrt/lightsamplers.cpp#L268 ```cpp Float pInfinite = Float(infiniteLights.size()) / Float(infiniteLights.size() + (!lightBounds.empty() ? 1 : 0)); ``` infiniteLigths.size() value can be 0.0 and...