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OGL: Work around slowdown of glMapBufferRange with SSBO on NVIDIA drivers

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Using glMapBufferRange to read back the contents of the SSBO is extremely
slow on NVIDIA drivers. This is more noticeable at higher internal
resolutions. Using glGetBufferSubData instead does not seem to exhibit
this slowdown.
This commit is contained in:
Stenzek 2016-05-11 22:19:59 +10:00
commit 89e54fbd6c
3 changed files with 27 additions and 4 deletions
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1
Source/Core/VideoCommon/DriverDetails.cpp
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@ -60,6 +60,7 @@ namespace DriverDetails
{OS_WINDOWS,VENDOR_NVIDIA, DRIVER_NVIDIA, Family::UNKNOWN, BUG_BROKENUNSYNCMAPPING, -1.0, -1.0, true},
{OS_LINUX, VENDOR_NVIDIA, DRIVER_NVIDIA, Family::UNKNOWN, BUG_BROKENUNSYNCMAPPING, -1.0, -1.0, true},
{OS_WINDOWS,VENDOR_INTEL, DRIVER_INTEL, Family::UNKNOWN, BUG_INTELBROKENBUFFERSTORAGE, 101810.3907, 101810.3960, true},
{OS_ALL, VENDOR_ATI, DRIVER_ATI, Family::UNKNOWN, BUG_SLOWGETBUFFERSUBDATA, -1.0, -1.0, true},
};
static std::map<Bug, BugInfo> m_bugs;