From 894b1f05c9b1bb7c6555a1cb8f4c548790517e20 Mon Sep 17 00:00:00 2001
From: NepDisk <nepdisk@noreply.codeberg.org>
Date: Wed, 2 Jul 2025 22:12:47 -0400
Subject: [PATCH] Add configurable minimum shader brightness

https://git.do.srb2.org/Hanicef/SRB2Classic/-/merge_requests/3
---
 src/hardware/hw_main.c | 5 ++++-
 src/hardware/hw_main.h | 1 +
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/hardware/hw_main.c b/src/hardware/hw_main.c
index 00c8c61ee..c66d38f77 100644
--- a/src/hardware/hw_main.c
+++ b/src/hardware/hw_main.c
@@ -295,7 +295,7 @@ void HWR_Lighting(FSurfaceInfo *Surface, INT32 light_level, extracolormap_t *col
 	}
 
 	// Clamp the light level, since it can sometimes go out of the 0-255 range from animations
-	light_level = min(max(light_level, 0), 255);
+	light_level = min(max(light_level, cv_glsecbright.value), 255);
 
 	V_CubeApply(&tint_color.s.red, &tint_color.s.green, &tint_color.s.blue);
 	V_CubeApply(&fade_color.s.red, &fade_color.s.green, &fade_color.s.blue);
@@ -6152,10 +6152,12 @@ static CV_PossibleValue_t glfiltermode_cons_t[]= {{HWD_SET_TEXTUREFILTER_POINTSA
 	{HWD_SET_TEXTUREFILTER_MIXED3, "Nearest_Mipmap"},
 	{0, NULL}};
 CV_PossibleValue_t glanisotropicmode_cons_t[] = {{1, "MIN"}, {16, "MAX"}, {0, NULL}};
+static CV_PossibleValue_t glsecbright_cons_t[] = {{0, "MIN"}, {255, "MAX"}, {0, NULL}};
 
 consvar_t cv_glshaders = CVAR_INIT ("gr_shaders", "On", CV_SAVE, glshaders_cons_t, NULL);
 consvar_t cv_glallowshaders = CVAR_INIT ("gr_allowclientshaders", "On", CV_NETVAR, CV_OnOff, NULL);
 consvar_t cv_fovchange = CVAR_INIT ("gr_fovchange", "Off", CV_SAVE, CV_OnOff, NULL);
+consvar_t cv_glsecbright = CVAR_INIT("gr_secbright", "0", CV_SAVE, glsecbright_cons_t, NULL);
 
 #ifdef ALAM_LIGHTING
 consvar_t cv_gldynamiclighting = CVAR_INIT ("gr_dynamiclighting", "On", CV_SAVE, CV_OnOff, NULL);
@@ -6217,6 +6219,7 @@ void HWR_AddCommands(void)
 	CV_RegisterVar(&cv_glspritebillboarding);
 	CV_RegisterVar(&cv_glshearing);
 	CV_RegisterVar(&cv_glshaders);
+	CV_RegisterVar(&cv_glsecbright);
 	CV_RegisterVar(&cv_glallowshaders);
 
 	CV_RegisterVar(&cv_glfiltermode);
diff --git a/src/hardware/hw_main.h b/src/hardware/hw_main.h
index aa239c62c..a247cd60a 100644
--- a/src/hardware/hw_main.h
+++ b/src/hardware/hw_main.h
@@ -99,6 +99,7 @@ extern consvar_t cv_glcoronasize;
 #endif
 
 extern consvar_t cv_glshaders, cv_glallowshaders;
+extern consvar_t cv_glsecbright;
 extern consvar_t cv_glmodels;
 
 // SRB2Kart: We don't like these options.