add clouds shader

res/preload.json

@@ -8,7 +8,8 @@
         "translucent",
         "background",
         "skybox_gen",
-        "shadows"
+        "shadows",
+        "clouds"
     ],
     "post-effects": [
         "default",

res/presets/weather/cloudy.json

@@ -1,4 +1,4 @@
 {
-    "clouds": 0.8
+    "clouds": 1.0
 }
 

res/presets/weather/fog.json

@@ -2,5 +2,5 @@
     "fog_opacity": 0.98,
     "fog_dencity": 3.6,
     "fog_curve": 0.25,
-    "clouds": 0.8
+    "clouds": 0.9
 }

res/shaders/clouds.glslf

@@ -0,0 +1,31 @@
+layout (location = 0) out vec4 f_color;
+layout (location = 1) out vec4 f_position;
+layout (location = 2) out vec4 f_normal;
+layout (location = 3) out vec4 f_emission;
+
+#include <world_fragment_header>
+
+in vec4 a_torchLight;
+
+uniform sampler2D u_texture0;
+uniform vec3 u_sunDir;
+
+// flags
+uniform bool u_alphaClip;
+uniform bool u_debugLights;
+uniform bool u_debugNormals;
+uniform vec4 u_tint;
+
+void main() {
+    f_color.rgb = max(a_torchLight.rgb, a_skyLight);
+    f_color.a = 1.0;
+    f_color *= u_tint;
+
+#ifndef ADVANCED_RENDER
+    vec3 fogColor = texture(u_skybox, a_dir).rgb;
+    f_color = mix(f_color, vec4(fogColor, 1.0), a_fog);
+#endif
+    f_position = vec4(a_position, 1.0);
+    f_normal = vec4(a_normal, 1.0);
+    f_emission = vec4(vec3(a_emission), 1.0);
+}

res/shaders/clouds.glslv

@@ -0,0 +1,49 @@
+#include <commons>
+
+layout (location = 0) in vec3 v_position;
+layout (location = 1) in vec2 v_texCoord;
+layout (location = 2) in vec4 v_light;
+layout (location = 3) in vec4 v_normal;
+
+#include <world_vertex_header>
+#include <lighting>
+#include <fog>
+#include <sky>
+
+uniform float u_dayTime;
+
+out vec4 a_torchLight;
+
+void main() {
+    a_modelpos = u_model * vec4(v_position, 1.0f);
+    a_modelpos.x += sin(u_timer * 0.05 + a_modelpos.z * 0.002) * 1.5;
+    a_modelpos.z += sin(u_timer * 0.2 + a_modelpos.x * 0.002) * 1.5;
+    a_modelpos.y += sin(u_timer * 0.1 + (a_modelpos.x + a_modelpos.z) * 0.001) * 2.0;
+
+    vec3 pos3d = a_modelpos.xyz - u_cameraPos;
+
+    a_realnormal = v_normal.xyz * 2.0 - 1.0;
+    a_normal = calc_screen_normal(a_realnormal);
+
+    a_torchLight = 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;
+    vec3 skyLightColor = pick_sky_color(u_skybox, u_dayTime);
+    a_skyLight = skyLightColor.rgb*v_light.a;
+
+    mat4 viewmodel = u_view * u_model;
+    a_distance = length(viewmodel * vec4(pos3d, 0.0));
+
+#ifndef ADVANCED_RENDER
+    a_fog = calc_fog(length(viewmodel * vec4(pos3d * FOG_POS_SCALE, 0.0)) / 256.0);
+#endif
+
+    a_emission = v_normal.w;
+
+    vec4 viewmodelpos = u_view * a_modelpos;
+    a_position = viewmodelpos.xyz;
+    gl_Position = u_proj * viewmodelpos;
+}