fix: skybox is not visible behind translucent blocks

res/shaders/entity.glslv

@@ -6,44 +6,23 @@ layout (location = 2) in vec3 v_color;
 layout (location = 3) in vec4 v_light;
 layout (location = 4) in vec4 v_normal;
 
-out float a_distance;
-out float a_fog;
-out vec2 a_texCoord;
-out vec3 a_dir;
-out vec3 a_normal;
-out vec3 a_position;
-out vec3 a_realnormal;
-out vec4 a_color;
-out vec4 a_modelpos;
-out float a_emission;
-
-uniform mat4 u_model;
-uniform mat4 u_proj;
-uniform mat4 u_view;
-uniform vec3 u_cameraPos;
-uniform float u_gamma;
-uniform float u_opacity;
-uniform float u_timer;
-uniform samplerCube u_skybox;
-
-uniform vec3 u_torchlightColor;
-uniform float u_torchlightDistance;
-
+#include <world_vertex_header>
 #include <lighting>
 #include <fog>
+#include <sky>
+
+out vec4 a_color;
 
 void main() {
     a_modelpos = u_model * vec4(v_position, 1.0);
     vec3 pos3d = a_modelpos.xyz - u_cameraPos;
-    a_modelpos.xyz = apply_planet_curvature(a_modelpos.xyz, pos3d);
 
     a_realnormal = v_normal.xyz * 2.0 - 1.0;
     a_normal = calc_screen_normal(a_realnormal);
 
-    vec3 light = v_light.rgb;
-    float torchlight = calc_torch_light(a_realnormal, a_modelpos.xyz);
-    light += torchlight * u_torchlightColor;
-    a_color = vec4(pow(light, vec3(u_gamma)), 1.0f);
+    a_color = vec4(calc_torch_light(
+        v_light.rgb, a_realnormal, a_modelpos.xyz, u_torchlightColor, u_gamma
+    ), 1.0);
     a_texCoord = v_texCoord;
 
     a_dir = a_modelpos.xyz - u_cameraPos;