initial implementation of world curvature

shaders/gbuffers_basic.vsh

@@ -2,6 +2,8 @@
 
 #define pixelSize 2 // [1 2 4 8 16]
 
+#define worldCurvature 0 // [0 1 2]
+
 varying vec2 texcoord;
 varying vec4 color;
 varying vec2 lmcoord;
@@ -26,5 +28,9 @@ void main() {
 	#ifdef tWarp
 		texture_warp();
 	#endif
+
+	#ifdef WORLD
+		#include "/module/world.vert"
+	#endif
 }
 

shaders/gbuffers_entities.fsh

@@ -0,0 +1 @@
+#include "/gbuffers_basic.fsh"

shaders/gbuffers_entities.vsh

@@ -0,0 +1,2 @@
+#define WORLD
+#include "/gbuffers_basic.vsh"

shaders/gbuffers_terrain.fsh

@@ -0,0 +1 @@
+#include "/gbuffers_basic.fsh"

shaders/gbuffers_terrain.vsh

@@ -0,0 +1,2 @@
+#define WORLD
+#include "/gbuffers_basic.vsh"

shaders/lang/en_US.lang

@@ -44,8 +44,6 @@ value.dofRes.0=Static
 value.dofRes.1=Dynamic
 option.worldCurvature=World Curvature
 value.worldCurvature.0=Off
-value.worldCurvature.1=Chunk
-value.worldCurvature.2=Cylinder
-value.worldCurvature.3=Polyhedron
-value.worldCurvature.4=Sphere
+value.worldCurvature.1=Cylinder
+value.worldCurvature.2=Round
 

shaders/module/world.vert

@@ -0,0 +1,8 @@
+#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
+

shaders/shaders.properties

@@ -19,7 +19,7 @@ screen.COLOR=colorMode dithering <empty> rgbSteps <empty> <empty> hueSteps satSt
 screen.PSX=vWarp tWarp
 
 #	fx
-screen.FX=dof dofRes
+screen.FX=dof dofRes worldCurvature
 
 #	-- CONDITIONALS --
 gbuffers_hand.enabled=tWarp