feat: deferred lighting (WIP)

res/shaders/effects/ssao.glsl

@@ -1,13 +1,12 @@
 #param vec3 u_ssaoSamples[64]
 #param int u_kernelSize = 16
-#param float u_radius = 0.25
-#param float u_bias = 0.025
+#param float u_radius = 0.2
+#param float u_bias = 0.006
 
 vec4 effect() {
     vec2 noiseScale = u_screenSize / 4.0;
 
     vec3 position = texture(u_position, v_uv).xyz;
-    vec3 color = texture(u_screen, v_uv).rgb;
     vec3 normal = texture(u_normal, v_uv).xyz;
     vec3 randomVec = normalize(texture(u_noise, v_uv * noiseScale).xyz);
 
@@ -31,7 +30,7 @@ vec4 effect() {
     }
     occlusion = min(1.0, 1.05 - (occlusion / u_kernelSize));
 
-    float z = -position.z * 0.02;
+    float z = -position.z * 0.01;
     z = max(0.0, 1.0 - z);
-    return vec4(color * mix(1.0, occlusion, z), 1.0);
+    return vec4(occlusion, 0.0, 0.0, 1.0);
 }