From bbfd6d06908d3545a11bb8f322300b4e724851cb Mon Sep 17 00:00:00 2001
From: Joshua Ashton <joshua@froggi.es>
Date: Thu, 26 Nov 2020 12:16:33 +0000
Subject: [PATCH] [util] Enable alpha test wiggle room for EverQuest 2

Fixes clothing being alpha tested incorrectly due to wonky interpolation on NVIDIA.

Game uses oC0 == 1.0f

My testing on NV shows the alpha test has a precision of 1/256 for all A8 and below formats, and around 1 / 2048 for A32F formats and 1 / 4096 for A16F formats (It makes no sense to me too) so anyway, we're just going to round this to a precision of 1 / 4096 and hopefully this should make things happy everywhere.

Closes: #1832
---
 src/util/config/config.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/util/config/config.cpp b/src/util/config/config.cpp
index 879a41004..45542f2b9 100644
--- a/src/util/config/config.cpp
+++ b/src/util/config/config.cpp
@@ -406,6 +406,10 @@ namespace dxvk {
     { R"(\\SpellForce2.*\.exe$)", {{
       { "d3d9.forceSamplerTypeSpecConstants", "True" },
     }} },
+    /* Everquest 2                                */
+    { R"(\\SpellForce2.*\.exe$)", {{
+      { "d3d9.alphaTestWiggleRoom", "True" },
+    }} },
   }};