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GS/HW: Adjust how we handle dithering on blend mix. 

Allow dither adjust regardless of alpha. usually it is clamed to 1 anyway so we can expand it if alpha max is higher than 128.

Expand dither adjust to work in rev subtract conditions.
This commit is contained in:
lightningterror 2024-12-12 11:49:25 +01:00
parent ecc24ce2e9
commit 7d16a915ed
1 changed files with 2 additions and 1 deletions
pcsx2/GS/Renderers/HW
GSRendererHW.cpp

3
pcsx2/GS/Renderers/HW/GSRendererHW.cpp
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@ -4553,7 +4553,8 @@ void GSRendererHW::EmulateBlending(int rt_alpha_min, int rt_alpha_max, const boo
// Disable dithering on blend mix if needed. // Disable dithering on blend mix if needed.
if (m_conf.ps.dither) if (m_conf.ps.dither)
{ {
const bool can_dither = (m_conf.ps.blend_a == 0 && m_conf.ps.blend_b == 1 && alpha_eq_less_one); // TODO: Either exclude BMIX1_ALPHA_HIGH_ONE case or allow alpha > 1.0 on dither adjust, case is currently disabled.
const bool can_dither = (m_conf.ps.blend_a == 0 && m_conf.ps.blend_b == 1) || (m_conf.ps.blend_a == 1 && m_conf.ps.blend_b == 0);
m_conf.ps.dither = can_dither; m_conf.ps.dither = can_dither;
m_conf.ps.dither_adjust = can_dither; m_conf.ps.dither_adjust = can_dither;
} }