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gsdx hw: limit OI_GsMemClear to large clear 

Help to reduce the speed impact
This commit is contained in:
Gregory Hainaut 2016-08-03 11:20:56 +02:00
parent f978f9a07d
commit 27f313ee16
1 changed files with 5 additions and 1 deletions
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6
plugins/GSdx/GSRendererHW.cpp
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@ -880,10 +880,14 @@ void GSRendererHW::OI_GsMemClear()
&& (!m_context->TEST.ZTE || m_context->TEST.ZTST == ZTST_ALWAYS) // no depth test
&& (m_vt.m_eq.rgba == 0xFFFF && m_vt.m_min.c.eq(GSVector4i(0))) // Constant 0 write
) {
GL_INS("OI_GsMemClear");
GSOffset* off = m_context->offset.fb;
GSVector4i r = GSVector4i(m_vt.m_min.p.xyxy(m_vt.m_max.p)).rintersect(GSVector4i(m_context->scissor.in));
// Limit the hack to a single fullscreen clear. Some games might use severals column to clear a screen
// but hopefully it will be enough.
if (r.width() <= 128 || r.height() <= 128)
return;
GL_INS("OI_GsMemClear (%d,%d => %d,%d)", r.x, r.y, r.z, r.w);
int format = GSLocalMemory::m_psm[m_context->FRAME.PSM].fmt;
// FIXME: loop can likely be optimized with AVX/SSE. Pixels aren't