From b8236b1b1c161bcff368eab1ae88eebbeee0da3d Mon Sep 17 00:00:00 2001
From: lightningterror <18107717+lightningterror@users.noreply.github.com>
Date: Fri, 18 Feb 2022 22:09:58 +0100
Subject: [PATCH] GS-hw: Partially revert #5540

Allow to wrap on colclip.
For real tho, ideal solution is sw blend, doing any clamp/wrap is wrong on blend mix.
---
 bin/resources/shaders/dx11/tfx.fx        | 2 +-
 bin/resources/shaders/opengl/tfx_fs.glsl | 2 +-
 bin/resources/shaders/vulkan/tfx.glsl    | 2 +-
 pcsx2/GS/Renderers/HW/GSRendererNew.cpp  | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/bin/resources/shaders/dx11/tfx.fx b/bin/resources/shaders/dx11/tfx.fx
index e2c9cfebbc9a9..7a533840ed060 100644
--- a/bin/resources/shaders/dx11/tfx.fx
+++ b/bin/resources/shaders/dx11/tfx.fx
@@ -717,7 +717,7 @@ void ps_color_clamp_wrap(inout float3 C)
 			C = clamp(C, (float3)0.0f, (float3)255.0f);
 
 		// In 16 bits format, only 5 bits of color are used. It impacts shadows computation of Castlevania
-		if (PS_DFMT == FMT_16 && PS_BLEND_MIX == 0)
+		if (PS_DFMT == FMT_16 && (PS_HDR == 1 || PS_BLEND_MIX == 0))
 			C = (float3)((int3)C & (int3)0xF8);
 		else if (PS_COLCLIP == 1 && PS_HDR == 0)
 			C = (float3)((int3)C & (int3)0xFF);
diff --git a/bin/resources/shaders/opengl/tfx_fs.glsl b/bin/resources/shaders/opengl/tfx_fs.glsl
index 33695049a91c9..212526bcd50f1 100644
--- a/bin/resources/shaders/opengl/tfx_fs.glsl
+++ b/bin/resources/shaders/opengl/tfx_fs.glsl
@@ -638,7 +638,7 @@ void ps_color_clamp_wrap(inout vec3 C)
     // Warning: normally blending equation is mult(A, B) = A * B >> 7. GPU have the full accuracy
     // GS: Color = 1, Alpha = 255 => output 1
     // GPU: Color = 1/255, Alpha = 255/255 * 255/128 => output 1.9921875
-#if PS_DFMT == FMT_16 && PS_BLEND_MIX == 0
+#if PS_DFMT == FMT_16 && (PS_HDR == 1 || PS_BLEND_MIX == 0)
     // In 16 bits format, only 5 bits of colors are used. It impacts shadows computation of Castlevania
     C = vec3(ivec3(C) & ivec3(0xF8));
 #elif PS_COLCLIP == 1 && PS_HDR == 0
diff --git a/bin/resources/shaders/vulkan/tfx.glsl b/bin/resources/shaders/vulkan/tfx.glsl
index 86156c0875f13..f6d3668983af3 100644
--- a/bin/resources/shaders/vulkan/tfx.glsl
+++ b/bin/resources/shaders/vulkan/tfx.glsl
@@ -973,7 +973,7 @@ void ps_color_clamp_wrap(inout vec3 C)
     // Warning: normally blending equation is mult(A, B) = A * B >> 7. GPU have the full accuracy
     // GS: Color = 1, Alpha = 255 => output 1
     // GPU: Color = 1/255, Alpha = 255/255 * 255/128 => output 1.9921875
-#if PS_DFMT == FMT_16 && PS_BLEND_MIX == 0
+#if PS_DFMT == FMT_16 && (PS_HDR == 1 || PS_BLEND_MIX == 0)
     // In 16 bits format, only 5 bits of colors are used. It impacts shadows computation of Castlevania
     C = vec3(ivec3(C) & ivec3(0xF8));
 #elif PS_COLCLIP == 1 && PS_HDR == 0
diff --git a/pcsx2/GS/Renderers/HW/GSRendererNew.cpp b/pcsx2/GS/Renderers/HW/GSRendererNew.cpp
index f6cf244690775..80fa3d9546633 100644
--- a/pcsx2/GS/Renderers/HW/GSRendererNew.cpp
+++ b/pcsx2/GS/Renderers/HW/GSRendererNew.cpp
@@ -706,7 +706,7 @@ void GSRendererNew::EmulateBlending(bool& DATE_PRIMID, bool& DATE_BARRIER)
 			accumulation_blend = false;
 			blend_mix          = false;
 		}
-		else if (accumulation_blend)
+		else if (accumulation_blend || blend_mix)
 		{
 			// A fast algo that requires 2 passes
 			GL_INS("COLCLIP Fast HDR mode ENABLED");