Added multisampling to shader

scenes/blockout_room.tscn

@@ -85,15 +85,15 @@ density = 0.1
 
 [sub_resource type="Environment" id="Environment_dp7jk"]
 tonemap_mode = 3
+ssao_enabled = true
 glow_enabled = true
 glow_normalized = true
 glow_intensity = 1.43
 glow_strength = 1.04
 glow_bloom = 0.16
-volumetric_fog_enabled = true
 
 [sub_resource type="Curve" id="Curve_gcpng"]
-_data = [Vector2(0, 0), 0.0, 0.0, 0, 0, Vector2(0.055555545, 0.022194743), 0.984991, 0.984991, 0, 0, Vector2(0.30246913, 0.3828606), 1.409688, 1.409688, 0, 0, Vector2(0.5864197, 0.6313193), 1.2172475, 1.2172475, 0, 0, Vector2(0.882716, 0.94389635), 1.9908764, 1.9908764, 0, 0, Vector2(1, 1), 0.063336894, 0.0, 0, 0]
+_data = [Vector2(0, 0), 0.0, 0.0, 0, 0, Vector2(0.26234567, 0.14241672), 0.0, 0.0, 0, 0, Vector2(0.5092592, 0.3427866), 0.0, 0.0, 0, 0, Vector2(0.79320985, 0.6313193), 0.0, 0.0, 0, 0, Vector2(0.87962955, 0.96794075), 0.0, 0.0, 0, 0, Vector2(1, 1), 0.063336894, 0.0, 0, 0]
 point_count = 6
 
 [sub_resource type="CurveTexture" id="CurveTexture_5747v"]
@@ -102,7 +102,8 @@ curve = SubResource("Curve_gcpng")
 [sub_resource type="ShaderMaterial" id="ShaderMaterial_gcpng"]
 shader = ExtResource("9_k5i88")
 shader_parameter/target_tex_size = Vector2(427, 240)
-shader_parameter/color_steps = 24.0
+shader_parameter/sample_count = 1
+shader_parameter/color_steps = 16.0
 shader_parameter/color_curve = SubResource("CurveTexture_5747v")
 
 [sub_resource type="ViewportTexture" id="ViewportTexture_dp7jk"]

scenes/main_render.gdshader

@@ -1,6 +1,7 @@
 shader_type canvas_item;
 
 uniform vec2 target_tex_size = vec2(1280,720);
+uniform int sample_count:hint_range(1, 20) = 1;
 
 uniform float color_steps:hint_range(1.0, 255.0, 1.0);
 uniform sampler2D color_curve;
@@ -10,12 +11,31 @@ void vertex() {
 	// Called for every vertex the material is visible on.
 }
 
+vec2 spiralPoint(float t, float spacing)
+{
+    float b = spacing / (2.0 * PI);
+    float r = b * t;
+
+    return vec2(
+        r * cos(t),
+        r * sin(t)
+    );
+}
+
 void fragment() {
 	//vec2 texSize = vec2(textureSize(TEXTURE,0)); // For performance reasons, this function should be avoided as it always performs a full texture read. When possible, you should pass the texture size as a uniform instead.
 	//texSize = texSize / 4.;
 	ivec2 intUv = ivec2(target_tex_size * UV);
 	vec2 flooredUv = vec2(intUv) / target_tex_size;
-	vec3 fullColor = texture(TEXTURE,flooredUv).rgb;
+	vec2 uvPixelWidth = 1. / target_tex_size;
+
+	vec3 fullColor = vec3(0);
+	for(int i = 0;i<sample_count;i++){
+		float f = float(i);
+		fullColor += texture(TEXTURE,flooredUv+spiralPoint(f*2.,uvPixelWidth.x / (float(sample_count)/6.283))).rgb;
+	}
+	fullColor /= float(sample_count);
+	
 	vec3 strechedColor = vec3(
 		texture(color_curve,vec2(fullColor.r,0)).r,
 		texture(color_curve,vec2(fullColor.g,0)).g,