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pcsx2
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gsdx hw: move try alpha test at the beginning 

Will allow to use alpha test optimization to better optimize depth lookup

Require to do clut handling before
This commit is contained in:
Gregory Hainaut 2016-09-25 18:56:48 +02:00
parent dc365e066d
commit c3ac3ecbe7
1 changed files with 21 additions and 19 deletions
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40
plugins/GSdx/GSRendererHW.cpp
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@ -406,6 +406,27 @@ void GSRendererHW::Draw()
GSDrawingEnvironment& env = m_env;
GSDrawingContext* context = m_context;
const GSLocalMemory::psm_t& tex_psm = GSLocalMemory::m_psm[m_context->TEX0.PSM];
// skip alpha test if possible
// Note: do it first so we know if frame/depth writes are masked
GIFRegTEST TEST = context->TEST;
GIFRegFRAME FRAME = context->FRAME;
GIFRegZBUF ZBUF = context->ZBUF;
uint32 fm = context->FRAME.FBMSK;
uint32 zm = context->ZBUF.ZMSK || context->TEST.ZTE == 0 ? 0xffffffff : 0;
// Note required to compute TryAlphaTest below. So do it now.
if (PRIM->TME && tex_psm.pal > 0)
m_mem.m_clut.Read32(context->TEX0, env.TEXA);
// Test if we can optimize Alpha Test as a NOP
m_ATE = context->TEST.ATE && !GSRenderer::TryAlphaTest(fm, zm);
context->FRAME.FBMSK = fm;
context->ZBUF.ZMSK = zm != 0;
// It is allowed to use the depth and rt at the same location. However at least 1 must
// be disabled.
@ -480,7 +501,6 @@ void GSRendererHW::Draw()
if(PRIM->TME)
{
const GSLocalMemory::psm_t& tex_psm = GSLocalMemory::m_psm[m_context->TEX0.PSM];
int lod = 0;
GIFRegCLAMP MIP_CLAMP = context->CLAMP;
@ -548,9 +568,6 @@ void GSRendererHW::Draw()
m_context->offset.tex = m_mem.GetOffset(TEX0.TBP0, TEX0.TBW, TEX0.PSM);
if(tex_psm.pal > 0)
m_mem.m_clut.Read32(context->TEX0, env.TEXA);
GSVector4i r;
GetTextureMinMax(r, TEX0, MIP_CLAMP, m_vt.IsLinear());
@ -661,21 +678,6 @@ void GSRendererHW::Draw()
}
}
// skip alpha test if possible
GIFRegTEST TEST = context->TEST;
GIFRegFRAME FRAME = context->FRAME;
GIFRegZBUF ZBUF = context->ZBUF;
uint32 fm = context->FRAME.FBMSK;
uint32 zm = context->ZBUF.ZMSK || context->TEST.ZTE == 0 ? 0xffffffff : 0;
// Test if we can optimize Alpha Test as a NOP
m_ATE = context->TEST.ATE && !GSRenderer::TryAlphaTest(fm, zm);
context->FRAME.FBMSK = fm;
context->ZBUF.ZMSK = zm != 0;
// A couple of hack to avoid upscaling issue. So far it seems to impacts mostly sprite
// Note: first hack corrects both position and texture coordinate
// Note: second hack corrects only the texture coordinate