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GS/HW: Improve source channel requirements for source lookups

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refractionpcsx2
2026-09-04 11:44:35 +02:00
committed by lightningterror
parent 77cfac7dbe
commit f0cd834ed2
1 changed files with 5 additions and 4 deletions
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pcsx2/GS/Renderers/HW/GSRendererHW.cpp
+5 -4
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@@ -3526,13 +3526,14 @@ void GSRendererHW::Draw()
const u32 color_mask = (m_vt.m_max.c > GSVector4i::zero()).mask();
const bool texture_function_color = m_cached_ctx.TEX0.TFX == TFX_DECAL || (color_mask & 0xFFF) || (m_cached_ctx.TEX0.TFX > TFX_DECAL && (color_mask & 0xF000));
const bool texture_function_alpha = m_cached_ctx.TEX0.TFX != TFX_MODULATE || (color_mask & 0xF000);
const bool req_color = (is_possible_channel_shuffle && channel_shuffle_targets != ChannelFetch_ALPHA) || (!is_possible_channel_shuffle && ((texture_function_color && (!PRIM->ABE || GSLocalMemory::m_psm[m_cached_ctx.TEX0.PSM].bpp < 16 || (NeedsBlending() && IsUsingCsInBlend())) && (possible_shuffle || (m_cached_ctx.FRAME.FBMSK & (fm_mask & 0x00FFFFFF)) != (fm_mask & 0x00FFFFFF))) || need_aem_color));
const bool alpha_used = (GSUtil::GetChannelMask(m_context->TEX0.PSM) == 0x8 || (m_context->TEX0.TCC && texture_function_alpha)) && ((NeedsBlending() && IsUsingAsInBlend()) || (m_cached_ctx.TEST.ATE && m_cached_ctx.TEST.ATST > ATST_ALWAYS) || (possible_shuffle || (m_cached_ctx.FRAME.FBMSK & (fm_mask & 0xFF000000)) != (fm_mask & 0xFF000000)));
const bool req_alpha = (is_possible_channel_shuffle && channel_shuffle_targets == ChannelFetch_ALPHA) || (!is_possible_channel_shuffle && (GSUtil::GetChannelMask(m_context->TEX0.PSM) & 0x8) && alpha_used);
const bool color_used = (is_possible_channel_shuffle && channel_shuffle_targets != ChannelFetch_ALPHA) || (!is_possible_channel_shuffle && ((texture_function_color && (!PRIM->ABE || (NeedsBlending() && IsUsingCsInBlend())) && ((m_cached_ctx.FRAME.FBMSK & (fm_mask & 0x00FFFFFF)) != (fm_mask & 0x00FFFFFF))) || need_aem_color));
const bool alpha_used = (is_possible_channel_shuffle && channel_shuffle_targets == ChannelFetch_ALPHA) || (!is_possible_channel_shuffle && (m_context->TEX0.TCC && texture_function_alpha) && ((NeedsBlending() && IsUsingAsInBlend()) || (m_cached_ctx.TEST.ATE && m_cached_ctx.TEST.ATST > ATST_ALWAYS) || (m_cached_ctx.FRAME.FBMSK & (fm_mask & 0xFF000000)) != (fm_mask & 0xFF000000)));
const bool req_color = (GSUtil::GetChannelMask(m_context->TEX0.PSM) & 0x7) && color_used;
const bool req_alpha = (GSUtil::GetChannelMask(m_context->TEX0.PSM) == 0x8 && (color_used || alpha_used)) || ((GSUtil::GetChannelMask(m_context->TEX0.PSM) & 0x8) && alpha_used);
// TODO: Be able to send an alpha of 1.0 (blended with vertex alpha maybe?) so we can avoid sending the texture, since we don't always need it.
// Example games: Evolution Snowboarding, Final Fantasy Dirge of Cerberus, Red Dead Revolver, Stuntman, Tony Hawk's Underground 2, Ultimate Spider-Man.
if (!req_color && !alpha_used)
if (!req_color && !req_alpha)
{
m_process_texture = false;
possible_shuffle = false;