This utility function is used by code not in the open source view of the swr rasterizer.
Microsoft’s documentation for getenv seems to suggest that their implementation has limitations: https://msdn.microsoft.com/en-us/library/tehxacec.aspx (under “Remarks”). -Tim > On May 17, 2016, at 6:08 PM, Ian Romanick <i...@freedesktop.org> wrote: > > This doesn't appear to be used anywhere. Maybe I missed it in some late > patch? As far as I can tell, getenv works on Windows (core Mesa uses it > all over the place), so the added value isn't clear to me. > > On 05/17/2016 03:36 PM, Tim Rowley wrote: >> --- >> src/gallium/drivers/swr/rasterizer/core/utils.h | 17 +++++++++++++++++ >> 1 file changed, 17 insertions(+) >> >> diff --git a/src/gallium/drivers/swr/rasterizer/core/utils.h >> b/src/gallium/drivers/swr/rasterizer/core/utils.h >> index e3c534d..1c4780a 100644 >> --- a/src/gallium/drivers/swr/rasterizer/core/utils.h >> +++ b/src/gallium/drivers/swr/rasterizer/core/utils.h >> @@ -866,3 +866,20 @@ struct TemplateArgUnroller >> } >> }; >> >> +////////////////////////////////////////////////////////////////////////// >> +/// Helper used to get an environment variable >> +////////////////////////////////////////////////////////////////////////// >> +static INLINE std::string GetEnv(const std::string& variableName) >> +{ >> + std::string output; >> +#if defined(_WIN32) >> + DWORD valueSize = GetEnvironmentVariableA(variableName.c_str(), >> nullptr, 0); >> + if (!valueSize) return output; >> + output.resize(valueSize - 1); // valueSize includes null, >> output.resize() does not >> + GetEnvironmentVariableA(variableName.c_str(), &output[0], valueSize); >> +#else >> + output = getenv(variableName.c_str()); >> +#endif >> + >> + return output; >> +} >> \ No newline at end of file >> > _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
