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GS-hw: Run GetAlphaMinMax only when required for Blend Mix. 

Optimization.
This commit is contained in:
lightningterror 2021-12-20 16:23:43 +01:00
parent 9368e29d62
commit 5f57084ed9
1 changed files with 7 additions and 6 deletions
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13
pcsx2/GS/Renderers/HW/GSRendererNew.cpp
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@ -540,14 +540,15 @@ void GSRendererNew::EmulateBlending(bool& DATE_GL42, bool& DATE_GL45)
const bool blend_non_recursive = !!(blend_flag & BLEND_NO_REC);
// BLEND MIX selection, use a mix of hw/sw blending
if (!m_vt.m_alpha.valid && (ALPHA.C == 0))
GetAlphaMinMax();
const bool blend_mix1 = !!(blend_flag & BLEND_MIX1);
const bool blend_mix2 = !!(blend_flag & BLEND_MIX2);
const bool blend_mix3 = !!(blend_flag & BLEND_MIX3);
bool blend_mix = (blend_mix1 || blend_mix2 || blend_mix3)
// Do not enable if As > 128 or F > 128, hw blend clamps to 1
&& !((ALPHA.C == 0 && m_vt.m_alpha.max > 128) || (ALPHA.C == 2 && ALPHA.FIX > 128u));
bool blend_mix = (blend_mix1 || blend_mix2 || blend_mix3);
// Checking alpha mix is costly, isolate it as an optimization.
if (!m_vt.m_alpha.valid && blend_mix && (ALPHA.C == 0))
GetAlphaMinMax();
// Do not enable if As > 128 or F > 128, hw blend clamps to 1
blend_mix &= !((ALPHA.C == 0 && m_vt.m_alpha.max > 128) || (ALPHA.C == 2 && ALPHA.FIX > 128u));
// SW Blend is (nearly) free. Let's use it.
const bool impossible_or_free_blend = (blend_flag & BLEND_A_MAX) // Impossible blending
@ -604,7 +605,7 @@ void GSRendererNew::EmulateBlending(bool& DATE_GL42, bool& DATE_GL45)
// Safe FBMASK, avoid hitting accumulation mode on 16bit,
// fixes shadows in Superman shadows of Apokolips.
const bool sw_fbmask_colclip = !m_conf.require_one_barrier && m_conf.ps.fbmask;
bool free_colclip;
bool free_colclip = false;
if (m_dev->Features().texture_barrier)
free_colclip = m_prim_overlap == PRIM_OVERLAP_NO || blend_non_recursive || sw_fbmask_colclip;
else