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D3D11/StreamBuffer: Use WRITE_DISCARD at position 0

This commit is contained in:
Connor McLaughlin 2020-03-08 12:37:56 +10:00
parent e19175edae
commit 99d42c07c2
1 changed files with 4 additions and 9 deletions
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13
src/common/d3d11/stream_buffer.cpp
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@ -55,24 +55,19 @@ void StreamBuffer::Release()
StreamBuffer::MappingResult StreamBuffer::Map(ID3D11DeviceContext* context, u32 alignment, u32 min_size)
{
m_position = Common::AlignUp(m_position, alignment);
D3D11_MAP map;
if ((m_position + min_size) >= m_size)
{
// wrap around
m_position = 0;
map = D3D11_MAP_WRITE_DISCARD;
}
else
{
map = D3D11_MAP_WRITE_NO_OVERWRITE;
}
D3D11_MAPPED_SUBRESOURCE sr;
const HRESULT hr = context->Map(m_buffer.Get(), 0, map, 0, &sr);
const D3D11_MAP map_type = (m_position == 0) ? D3D11_MAP_WRITE_DISCARD : D3D11_MAP_WRITE_NO_OVERWRITE;
const HRESULT hr = context->Map(m_buffer.Get(), 0, map_type, 0, &sr);
if (FAILED(hr))
{
Log_ErrorPrintf("Map failed: 0x%08X", hr);
Log_ErrorPrintf("Map failed: 0x%08X (alignment %u, minsize %u, size %u, position %u, map type %u)", hr, alignment,
min_size, m_size, m_position, static_cast<u32>(map_type));
Panic("Map failed");
return {};
}