Fixed minor shader issues, added curved world effect

assets/voxygen/shaders/figure-vert.glsl

@@ -95,6 +95,10 @@ void main() {
         vec4(pos, 1.0)
     ).xyz + (model_pos - focus_off.xyz);
 
+    #ifdef EXPERIMENTAL_CURVEDWORLD
+        f_pos.z -= pow(distance(f_pos.xy + focus_off.xy, focus_pos.xy + focus_off.xy) * 0.05, 2);
+    #endif
+
     /* f_pos.z -= 25.0 * pow(distance(focus_pos.xy, f_pos.xy) / view_distance.x, 20.0); */
 
     f_uv_pos = vec2((uvec2(v_atlas_pos) >> uvec2(2, 17)) & uvec2(0x7FFFu, 0x7FFFu));

assets/voxygen/shaders/fluid-vert.glsl

@@ -54,6 +54,12 @@ void main() {
     // f_pos.z -= 250.0 * (1.0 - min(1.0001 - 0.02 / pow(tick.x - load_time, 10.0), 1.0));
     // f_pos.z -= min(32.0, 25.0 * pow(distance(focus_pos.xy, f_pos.xy) / view_distance.x, 20.0));
 
+    f_pos.z -= 250.0 * (1.0 - min(1.0001 - 0.02 / pow(tick.x - load_time, 10.0), 1.0));
+
+    #ifdef EXPERIMENTAL_CURVEDWORLD
+        f_pos.z -= pow(distance(f_pos.xy + focus_off.xy, focus_pos.xy + focus_off.xy) * 0.05, 2);
+    #endif
+
     // Small waves
     // f_pos.xy += 0.01; // Avoid z-fighting
     // f_pos.x += 0.1 * sin(tick.x / 60 * hash(vec4(f_pos.xyz, 1.0)));

assets/voxygen/shaders/include/cloud/regular.glsl

@@ -1,3 +1,4 @@
+#include <constants.glsl>
 #include <random.glsl>
 #include <lod.glsl>
 
@@ -15,6 +16,10 @@ float cloud_broad(vec3 pos) {
 
 // Returns vec4(r, g, b, density)
 vec4 cloud_at(vec3 pos, float dist, out vec3 emission, out float not_underground) {
+    #ifdef EXPERIMENTAL_CURVEDWORLD
+        pos.z += pow(distance(pos.xy, focus_pos.xy + focus_off.xy) * 0.05, 2);
+    #endif
+
     // Natural attenuation of air (air naturally attenuates light that passes through it)
     // Simulate the atmosphere thinning as you get higher. Not physically accurate, but then
     // it can't be since Veloren's world is flat, not spherical.

assets/voxygen/shaders/lod-terrain-vert.glsl

@@ -44,13 +44,17 @@ void main() {
 
     // f_shadow = textureBicubic(t_horizon, pos_to_tex(f_pos.xy));
 
-    // TODO: disabled because it isn't designed to work with reverse depth 
+    // TODO: disabled because it isn't designed to work with reverse depth
     //float dist = distance(focus_pos.xy, f_pos.xy);
     //pull_down = 0.2 / pow(dist / (view_distance.x * 0.9), 20.0);
 
     pull_down = 1.0 / pow(distance(focus_pos.xy, f_pos.xy) / (view_distance.x * 0.95), 20.0);
     f_pos.z -= pull_down;
 
+    #ifdef EXPERIMENTAL_CURVEDWORLD
+        f_pos.z -= pow(distance(f_pos.xy + focus_off.xy, focus_pos.xy + focus_off.xy) * 0.05, 2);
+    #endif
+
     // f_pos.z -= 100.0 * pow(1.0 + 0.01 / view_distance.x, -pow(distance(focus_pos.xy, f_pos.xy), 2.0));
     // f_pos.z = mix(-f_pos.z, f_pos.z, view_distance.x <= distance(focus_pos.xy, f_pos.xy) + 32.0);
 
@@ -98,9 +102,9 @@ void main() {
         all_mat *
         vec4(f_pos/*newRay*/, 1);
     // Pull up the depth to avoid drawing over voxels (biased according to VD)
-    // TODO: disabled because it isn't designed to work with reverse depth 
+    // TODO: disabled because it isn't designed to work with reverse depth
     //gl_Position.z += 0.1 * clamp((view_distance.x * 1.0 - dist) * 0.01, 0, 1);
-    
+
     // gl_Position.z = -gl_Position.z / gl_Position.w;
     // gl_Position.z = -gl_Position.z / gl_Position.w;
     // gl_Position.z = -gl_Position.z * gl_Position.w;

assets/voxygen/shaders/particle-vert.glsl

@@ -585,6 +585,10 @@ void main() {
 
     f_pos = start_pos + (v_pos * attr.scale * SCALE * mat3(attr.rot) + attr.offs);
 
+    #ifdef EXPERIMENTAL_CURVEDWORLD
+        f_pos.z -= pow(distance(f_pos.xy + focus_off.xy, focus_pos.xy + focus_off.xy) * 0.05, 2);
+    #endif
+
     // First 3 normals are negative, next 3 are positive
     // TODO: Make particle normals match orientation
     vec4 normals[6] = vec4[](vec4(-1,0,0,0), vec4(1,0,0,0), vec4(0,-1,0,0), vec4(0,1,0,0), vec4(0,0,-1,0), vec4(0,0,1,0));

assets/voxygen/shaders/sprite-vert.glsl

@@ -85,6 +85,10 @@ void main() {
     // Terrain 'pop-in' effect
     f_pos.z -= 250.0 * (1.0 - min(1.0001 - 0.02 / pow(tick.x - load_time, 10.0), 1.0));
 
+    #ifdef EXPERIMENTAL_CURVEDWORLD
+        f_pos.z -= pow(distance(f_pos.xy + focus_off.xy, focus_pos.xy + focus_off.xy) * 0.05, 2);
+    #endif
+
     // Wind sway effect
     f_pos += model_wind_sway * vec3(
         sin(tick.x * 1.5 + f_pos.y * 0.1) * sin(tick.x * 0.35),
@@ -117,7 +121,7 @@ void main() {
     f_uv_pos = vec2((uvec2(v_atlas_pos) >> uvec2(0, 16)) & uvec2(0xFFFFu, 0xFFFFu));;
 
     // Position of the sprite block in the chunk
-    // Used solely for highlighting the selected sprite 
+    // Used solely for highlighting the selected sprite
     vec3 inst_chunk_pos = vec3(inst_pos_ori & 0x3Fu, (inst_pos_ori >> 6) & 0x3Fu, float((inst_pos_ori >> 12) & 0xFFFFu) - EXTRA_NEG_Z);
     // Select glowing
     vec3 sprite_pos = inst_chunk_pos + chunk_offs;

assets/voxygen/shaders/terrain-frag.glsl

@@ -169,12 +169,12 @@ void main() {
     vec3 f_norm = normals[(f_pos_norm >> 29) & 0x7u];
 
     #ifdef EXPERIMENTAL_BRICKLOREN
-        vec3 pos = f_pos - focus_off.xyz;
-        vec3 fp = pos * vec3(1.0, 1.0, 3.0);
-        fp.xy += floor(fp.z) * 0.5;
-        vec3 clamped = min(floor(fp.xyz) + vec3(0.92, 0.92, 0.8), max(floor(fp.xyz) + vec3(0.06, 0.06, 0.2), fp.xyz));
-        f_norm.xyz += (fp.xyz - clamped) * 8.0 * sign(1.0 - f_norm) * max(1.0 - length(f_pos - cam_pos.xyz) / 64.0, 0);
-        f_norm = normalize(f_norm);
+        vec3 pos = f_pos + focus_off.xyz;
+        vec3 sz = vec3(1.0 + mod(floor(pos.z * 3 + floor(pos.x) + floor(pos.y) - 0.01), 2.0) * 2, 1.0 + mod(floor(pos.z * 3 + floor(pos.x) + floor(pos.y) + 0.99), 2.0) * 2, 3.0);
+        vec3 fp = pos * sz;
+        vec3 clamped = min(floor(fp.xyz) + 1.0 - 0.05 * sz, max(floor(fp.xyz) + 0.05 * sz, fp.xyz));
+        f_norm.xyz += (fp.xyz - clamped) * 6.0 * sign(1.0 - f_norm) * max(1.0 - length(f_pos - cam_pos.xyz) / 64.0, 0);
+        /* f_norm = normalize(f_norm); */
         f_col /= 1.0 + length((fp - clamped) * sign(1.0 - f_norm)) * 2;
     #endif
 

assets/voxygen/shaders/terrain-vert.glsl

@@ -77,10 +77,16 @@ void main() {
 
     f_load_time = load_time;
 
+    vec3 v_pos = f_pos;
+
     // Terrain 'pop-in' effect
-    f_pos.z -= 250.0 * (1.0 - min(1.0001 - 0.02 / pow(tick.x - load_time, 10.0), 1.0));
+    v_pos.z -= 250.0 * (1.0 - min(1.0001 - 0.02 / pow(tick.x - load_time, 10.0), 1.0));
     // f_pos.z -= min(32.0, 25.0 * pow(distance(focus_pos.xy, f_pos.xy) / view_distance.x, 20.0));
 
+    #ifdef EXPERIMENTAL_CURVEDWORLD
+        v_pos.z -= pow(distance(v_pos.xy + focus_off.xy, focus_pos.xy + focus_off.xy) * 0.05, 2);
+    #endif
+
     // vec3 light_col = vec3(
     //          hash(floor(vec4(f_chunk_pos.x, 0, 0, 0))),
     //          hash(floor(vec4(0, f_chunk_pos.y, 0, 1))),
@@ -157,10 +163,10 @@ void main() {
 #ifdef HAS_SHADOW_MAPS
     gl_Position =
         /*all_mat*/shadowMatrices/*texture_mat*/ *
-        vec4(f_pos/*newRay*/, 1);
+        vec4(v_pos/*newRay*/, 1);
     gl_Position.z = clamp(gl_Position.z, -abs(gl_Position.w), abs(gl_Position.w));
 #else
-    gl_Position = all_mat * vec4(f_pos/*newRay*/, 1);
+    gl_Position = all_mat * vec4(v_pos/*newRay*/, 1);
 #endif
     // gl_Position.y /= gl_Position.w;
     // gl_Position.w = 1.0;

voxygen/src/render/mod.rs

@@ -397,4 +397,6 @@ pub enum ExperimentalShader {
     Brickloren,
     /// Remove the default procedural noise from terrain.
     NoNoise,
+    /// Simulated a curved world.
+    CurvedWorld,
 }