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Merge pull request #6041 from stenzek/streambuffer-fence

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StreamBuffer: Don't wait on fences twice when reserve > commit
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Markus Wick 2017-09-10 11:20:01 +02:00 committed by GitHub
commit 88624f638f
1 changed files with 7 additions and 1 deletions
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8
Source/Core/VideoBackends/OGL/StreamBuffer.cpp
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@ -97,7 +97,13 @@ void StreamBuffer::AllocMemory(u32 size)
glClientWaitSync(m_fences[i], GL_SYNC_FLUSH_COMMANDS_BIT, GL_TIMEOUT_IGNORED);
glDeleteSync(m_fences[i]);
}
m_free_iterator = m_iterator + size;
// If we allocate a large amount of memory (A), commit a smaller amount, then allocate memory
// smaller than allocation A, we will have already waited for these fences in A, but not used
// the space. In this case, don't set m_free_iterator to a position before that which we know
// is safe to use, which would result in waiting on the same fence(s) next time.
if ((m_iterator + size) > m_free_iterator)
m_free_iterator = m_iterator + size;
// if buffer is full
if (m_iterator + size >= m_size)