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GS/HW: Optimize blends in some zero scenarios

This commit is contained in:
refractionpcsx2 2024-06-24 09:21:14 +01:00
parent 3040474f99
commit 7e53cb8e99
2 changed files with 30 additions and 0 deletions
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2
pcsx2/GS/Renderers/HW/GSHwHack.cpp
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@ -1429,6 +1429,8 @@ bool GSHwHack::MV_Ico(GSRendererHW& r)
dst->UpdateValidChannels(PSMCT32, 0);
dst->UpdateValidity(draw_rc);
dst->UnscaleRTAlpha();
dst->m_alpha_min = 0;
dst->m_alpha_max = 255;
GSHWDrawConfig& config = GSRendererHW::GetInstance()->BeginHLEHardwareDraw(
dst->GetTexture(), nullptr, dst->GetScale(), src->GetTexture(), src->GetScale(), draw_rc);

28
pcsx2/GS/Renderers/HW/GSRendererHW.cpp
View File

@ -2059,7 +2059,13 @@ void GSRendererHW::Draw()
const GSDrawingEnvironment& env = *m_draw_env;
const GSLocalMemory::psm_t& tex_psm = GSLocalMemory::m_psm[m_cached_ctx.TEX0.PSM];
if (PRIM->TME && tex_psm.pal > 0)
{
m_mem.m_clut.Read32(m_cached_ctx.TEX0, env.TEXA);
if (m_mem.m_clut.GetGPUTexture())
{
CalcAlphaMinMax(0, 255);
}
}
// Test if we can optimize Alpha Test as a NOP
m_cached_ctx.TEST.ATE = m_cached_ctx.TEST.ATE && !GSRenderer::TryAlphaTest(fm, zm);
@ -4087,6 +4093,23 @@ void GSRendererHW::EmulateBlending(int rt_alpha_min, int rt_alpha_max, bool& DAT
GL_INS("Draw AlphaMinMax: %d-%d, RT AlphaMinMax: %d-%d", GetAlphaMinMax().min, GetAlphaMinMax().max, rt_alpha_min, rt_alpha_max);
#endif
// If the colour is modulated to zero or we're not using a texture and the color is zero, we can replace any Cs with 0
if ((!PRIM->TME || m_cached_ctx.TEX0.TFX != TFX_DECAL) && (!PRIM->FGE || m_draw_env->FOGCOL.U32[0] == 0) &&
((m_vt.m_max.c == GSVector4i::zero()).mask() & 0xfff) == 0xfff)
{
// If using modulate or is HIGHLIGHT by the vertex alpha is zero, we should be safe to kill it.
if (m_cached_ctx.TEX0.TFX == TFX_MODULATE || m_vt.m_max.c.a == 0)
{
if (m_conf.ps.blend_a == 0)
m_conf.ps.blend_a = 2;
if (m_conf.ps.blend_b == 0)
m_conf.ps.blend_b = 2;
if (m_conf.ps.blend_d == 0)
m_conf.ps.blend_d = 2;
}
}
// When AA1 is enabled and Alpha Blending is disabled, alpha blending done with coverage instead of alpha.
// We use a COV value of 128 (full coverage) in triangles (except the edge geometry, which we can't do easily).
if (IsCoverageAlpha())
@ -4109,6 +4132,11 @@ void GSRendererHW::EmulateBlending(int rt_alpha_min, int rt_alpha_max, bool& DAT
m_conf.ps.blend_c = 2;
}
}
else if (m_conf.ps.blend_c == 0 && GetAlphaMinMax().min == GetAlphaMinMax().max)
{
AFIX = GetAlphaMinMax().max;
m_conf.ps.blend_c = 2;
}
// Get alpha value
const bool alpha_c0_eq_zero = (m_conf.ps.blend_c == 0 && GetAlphaMinMax().max == 0);