uhhh?????

src/normals.frag.glsl

@@ -5,8 +5,6 @@
 #include "include.glsl"
 #include "implicit_include.glsl"
 
-#define tau 6.28318530717958647692
-
 layout(location = 0) in vec2 v_pos;
 
 layout(input_attachment_index = 0, set = 2, binding = 0) uniform usubpassInput u_material;
@@ -52,60 +50,18 @@ vec3 getBiTangent(vec3 n, vec3 t) {
     return normalize(cross(n, t));
 }
 
-uvec4 hash;
-
-uvec4 pcg4d(uvec4 v) {
-    v = v * 1664525u + 1013904223u;
-    v.x += v.y * v.w;
-    v.y += v.z * v.x;
-    v.z += v.x * v.y;
-    v.w += v.y * v.z;
-    v ^= v >> 16u;
-    v.x += v.y * v.w;
-    v.y += v.z * v.x;
-    v.z += v.x * v.y;
-    v.w += v.y * v.z;
-    return v;
-}
-
-// Construct a float with half-open range [0:1] using low 23 bits.
-// All zeroes yields 0.0, all ones yields the next smallest representable value below 1.0.
-float floatConstruct(uint m) {
-    const uint ieeeMantissa = 0x007FFFFFu; // binary32 mantissa bitmask
-    const uint ieeeOne = 0x3F800000u; // 1.0 in IEEE binary32
-
-    m &= ieeeMantissa; // Keep only mantissa bits (fractional part)
-    m |= ieeeOne; // Add fractional part to 1.0
-
-    float f = uintBitsToFloat(m); // Range [1:2]
-    return f - 1.0; // Range [0:1]
-}
-
-vec3 getPointOnSphere(vec2 rv) {
-    float a = tau * rv.x;
-    float b = 2.0 * rv.y - 1.0;
-    float c = sqrt(1.0 - b * b);
-    vec3 h = vec3(c * cos(a), b, c * sin(a));
-    return h;
-}
-
-const float AO_INTENSITY = 0.1;
-const float AO_STEP = 0.02;
+const float AO_INSTENSITY = 0.1;
+const float AO_STEP = 0.01;
 const uint AO_MAX_ITER = 10;
 
 float getOcclusion(vec3 p, vec3 n) {
     float ao = 0.0;
-    //for (uint i = 1; i < AO_MAX_ITER; i++) {
-    //    hash = pcg4d(hash);
-    //    vec3 point = getPointOnSphere(vec2(floatConstruct(hash.x), floatConstruct(hash.y))) * AO_STEP;
-    //    float dist = dot(point, n);
-    //    if (dist < 0) {
-    //        dist = abs(dist);
-    //        point += n * dist * 2.0;
-    //    }
-    //    ao += max((dist - scene(vec4(p + point, camera_uniforms.campos_and_time.w))) / dist, 0.0);
-    //}
-    return 1.0 - ao * AO_INTENSITY;
+    float dist;
+    for (uint i = 1; i < AO_MAX_ITER; i++) {
+        dist = AO_STEP * i;
+        ao += max((dist - scene(vec4(p + n * dist, camera_uniforms.campos_and_time.w))) / dist, 0.0);
+    }
+    return 1.0 - ao * AO_INSTENSITY;
 }
 
 //Implicit Surface Entrypoint
@@ -114,8 +70,6 @@ void main() {
         discard;
     }
 
-    //hash = uvec4(v_pos.x * 374799253, v_pos.y * 615653626, camera_uniforms.campos_and_time.w * 626228781, 713668633);
-
     float depth = subpassLoad(u_depth).x;
     if (depth == 1.0) {
         discard;
@@ -124,7 +78,7 @@ void main() {
 
     vec3 n = getNormal(position);
 
-    f_color = vec4(object_uniforms.colour, 1.0);
+    f_color = vec4(1.0);
     f_ao_r_m.y = object_uniforms.roughness;
     f_ao_r_m.z = object_uniforms.metallic;