From 0cfb16e33a3ace4924a02d35cd6130cfbd3311b2 Mon Sep 17 00:00:00 2001
From: Valerie <sleeplessval@gmail.com>
Date: Thu, 18 Apr 2024 16:23:06 -0400
Subject: [PATCH] added curvature strength slider and restructured world module

---
 shaders/gbuffers_basic.vsh |  7 ++++---
 shaders/lang/en_US.lang    |  5 +++++
 shaders/module/world.vert  | 20 +++++++++++++-------
 shaders/shaders.properties |  4 ++--
 4 files changed, 24 insertions(+), 12 deletions(-)

diff --git a/shaders/gbuffers_basic.vsh b/shaders/gbuffers_basic.vsh
index 6942a19..4e6040e 100644
--- a/shaders/gbuffers_basic.vsh
+++ b/shaders/gbuffers_basic.vsh
@@ -2,8 +2,6 @@
 
 #include "/module/common.glsl"
 
-#define worldCurvature 0 // [0 1 2]
-
 varying vec2 texcoord;
 varying vec4 color;
 varying vec2 lmcoord;
@@ -13,6 +11,7 @@ uniform float viewWidth, viewHeight;
 
 #include "/module/vertex_warp.vert"
 #include "/module/texture_warp.vert"
+#include "/module/world.vert"
 
 void main() {
 	texcoord = (gl_TextureMatrix[0] * gl_MultiTexCoord0).xy;
@@ -30,7 +29,9 @@ void main() {
 	#endif
 
 	#ifndef NON_WORLD
-		#include "/module/world.vert"
+		#if worldCurvature > 0
+			world_curvature();
+		#endif
 	#endif
 }
 
diff --git a/shaders/lang/en_US.lang b/shaders/lang/en_US.lang
index 52eef69..81ea869 100644
--- a/shaders/lang/en_US.lang
+++ b/shaders/lang/en_US.lang
@@ -56,4 +56,9 @@ option.worldCurvature=World Curvature
 value.worldCurvature.0=Off
 value.worldCurvature.1=Cylinder
 value.worldCurvature.2=Round
+option.worldRadius=Curvature Strength
+value.worldRadius.1024=Low (1024)
+value.worldRadius.512=Medium (512)
+value.worldRadius.256=High (256)
+value.worldRadius.-256=Inverse (-256)
 
diff --git a/shaders/module/world.vert b/shaders/module/world.vert
index e4abe93..214c5e9 100644
--- a/shaders/module/world.vert
+++ b/shaders/module/world.vert
@@ -1,8 +1,14 @@
-#if worldCurvature == 1
-	float z = gl_Position.z * gl_Position.z;
-	gl_Position.y -= z / 256;
-#elif worldCurvature == 2
-	vec2 xz = gl_Position.xz;
-	gl_Position.y -= ceil(( dot(xz, xz) * 5 ) / 512) / 5;
-#endif
+
+#define worldCurvature 0 // [0 1 2]
+#define worldRadius 512 // [1024 512 256 -256]
+
+void world_curvature() {
+	#if worldCurvature == 1
+		float z = gl_Position.z * gl_Position.z;
+		gl_Position.y -= 2 * z / worldRadius;
+	#elif worldCurvature == 2
+		vec2 xz = gl_Position.xz;
+		gl_Position.y -= ceil(( dot(xz, xz) * 5 ) / worldRadius) / 5;
+	#endif
+}
 
diff --git a/shaders/shaders.properties b/shaders/shaders.properties
index cf3fb46..271dcb5 100644
--- a/shaders/shaders.properties
+++ b/shaders/shaders.properties
@@ -1,4 +1,4 @@
-sliders=pixelSize hueSteps satSteps valSteps rgbSteps vWarp
+sliders=pixelSize hueSteps satSteps valSteps rgbSteps vWarp worldRadius
 
 #	-- PROFILES --
 profile.DEFAULT=pixelSize=2 colorMode=0 dithering hueSteps=4 satSteps=4 valSteps=4 vWarp=0 !tWarp !hBlur
@@ -26,7 +26,7 @@ screen.PSX=vWarp tWarp 	#	playstation
 screen.REALITY=hBlur 	#	nintendo 64
 
 #	custom effects
-screen.FX=dof dofRes worldCurvature
+screen.FX=dof dofRes worldCurvature worldRadius
 
 #	-- CONDITIONALS --
 gbuffers_hand.enabled=tWarp