More experimental shaders

assets/voxygen/shaders/clouds-frag.glsl

@@ -95,6 +95,10 @@ void main() {
         tgt_color = vec4(mat_colors[mat.a % 5u], 1);
         return;
     #endif
+    #ifdef EXPERIMENTAL_VIEWDEPTH
+        tgt_color = vec4(vec3(pow(clamp(depth_at(uv) / 524288.0, 0, 1), 0.3)), 1);
+        return;
+    #endif
 
     #ifdef EXPERIMENTAL_BAREMINIMUM
         tgt_color = vec4(color.rgb, 1);

assets/voxygen/shaders/include/random.glsl

@@ -27,6 +27,13 @@ float hash_two(uvec2 q) {
     return float(n) * (1.0 / float(0xffffffffU));
 }
 
+float hash_three(uvec3 q) {
+    q *= uvec3(M1, M2, M3);
+    uint n = q.x ^ q.y ^ q.z;
+    n = n * (n ^ (n >> 15));
+    return float(n) * (1.0 / float(0xffffffffU));
+}
+
 float hash_fast(uvec3 q) {
     q *= uvec3(M1, M2, M3);
 

assets/voxygen/shaders/postprocess-frag.glsl

@@ -314,5 +314,11 @@ void main() {
     #endif
 #endif
 
+    #ifdef EXPERIMENTAL_NEWSPAPER
+        float nz = hash_three(uvec3(uvec2(uv * screen_res.xy), tick.x * dot(fract(uv * 10) + 5, vec2(1)) * 0.3));
+        nz = (nz > 0.5) ? (pow(nz * 2 - 1, 1.5) * 0.5 + 0.5) : (pow(nz * 2, 1/1.5) * 0.5);
+        final_color.rgb = vec3(step(nz, length(final_color.rgb))) * mix(vec3(1, 0.5, 0.3), normalize(final_color.rgb), 0.05);
+    #endif
+
     tgt_color = vec4(final_color.rgb, 1);
 }

voxygen/src/render/mod.rs

@@ -515,6 +515,8 @@ pub enum ExperimentalShader {
     ViewNormals,
     /// Show gbuffer materials.
     ViewMaterials,
+    /// Show gbuffer depth.
+    ViewDepth,
     /// Rather than fading out screen-space reflections at view space borders,
     /// smear screen space to cover the reflection vector.
     SmearReflections,
@@ -526,4 +528,6 @@ pub enum ExperimentalShader {
     /// Prefer using physically-based values for various rendering parameters,
     /// where possible.
     Photorealistic,
+    /// A dithered newspaper effect.
+    Newspaper,
 }