change 'graphics.ssao' from flag to number

res/layouts/pages/settings_graphics.xml.lua

@@ -44,6 +44,6 @@ function on_open()
     create_checkbox("graphics.soft-lighting", "Soft lighting", "graphics.soft-lighting.tooltip")
     create_checkbox("graphics.dense-render", "Dense blocks render", "graphics.dense-render.tooltip")
     create_checkbox("graphics.advanced-render", "Advanced render", "graphics.advanced-render.tooltip")
-    create_checkbox("graphics.ssao", "SSAO", "graphics.ssao.tooltip")
+    create_setting("graphics.ssao", "SSAO", 1, "", "graphics.ssao.tooltip")
     create_setting("graphics.shadows-quality", "Shadows quality", 1)
 end

res/resources.json

@@ -6,6 +6,7 @@
         "cinematic"
     ],
     "post-effect-slot": [
-        "default"
+        "default",
+        "ssao"
     ]
 }

res/scripts/hud.lua

@@ -1,6 +1,6 @@
 local function configure_SSAO()
     -- Temporary using slot to configure built-in SSAO effect
-    local slot = gfx.posteffects.index("core:default")
+    local slot = gfx.posteffects.index("core:ssao")
     gfx.posteffects.set_effect(slot, "ssao")
 
     -- Generating random SSAO samples
@@ -18,8 +18,18 @@ local function configure_SSAO()
         Bytearray.append(buffer, byteutil.pack("fff", x, y, z))
     end
     gfx.posteffects.set_array(slot, "u_ssaoSamples", Bytearray_as_string(buffer))
-    -- SSAO effect configured, so 'core:default' slot may be reused now 
-    -- for test purposes
+
+    local function update_ssao_quality(value)
+        value = math.min(value, 3)
+        gfx.posteffects.set_params(slot, {
+            u_kernelSize = value * 16,
+            u_radius = 0.4 / value,
+            u_bias = 0.006 / value / value,
+        })
+    end
+    events.on("core:setting.graphics.ssao.set", update_ssao_quality)
+
+    update_ssao_quality(core.get_setting("graphics.ssao"))
 end
 
 local function update_hand()

res/shaders/effects/ssao.glsl

@@ -1,7 +1,7 @@
 #param vec3 u_ssaoSamples[64]
-#param int u_kernelSize = 16
-#param float u_radius = 0.4
-#param float u_bias = 0.006
+#param int u_kernelSize = 32
+#param float u_radius = 0.2
+#param float u_bias = 0.001
 
 vec4 effect() {
     vec2 noiseScale = u_screenSize / 4.0;