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Fixed dynamic buffer overrun. Issue #760.

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This commit is contained in:
Branimir Karadžić
2016-04-18 20:08:50 -07:00
parent d4b60cdad4
commit fe62fe5ebf
1 changed files with 4 additions and 1 deletions
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5
src/bgfx_p.h
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@@ -2535,7 +2535,10 @@ namespace bgfx
}
uint32_t offset = (dvb.m_startVertex + _startVertex)*dvb.m_stride;
uint32_t size = bx::uint32_min(bx::uint32_satsub(dvb.m_size, _startVertex*dvb.m_stride), _mem->size);
uint32_t size = bx::uint32_min(offset
+ bx::uint32_min(bx::uint32_satsub(dvb.m_size, _startVertex*dvb.m_stride), _mem->size)
, BGFX_CONFIG_DYNAMIC_VERTEX_BUFFER_SIZE) - offset
;
BX_CHECK(_mem->size <= size, "Truncating dynamic vertex buffer update (size %d, mem size %d)."
, dvb.m_size
, _mem->size