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2025-05-13 05:19:58 +03:00
parent 853edaf0b4
commit 472b2aee18
1034 changed files with 41844 additions and 0 deletions
@@ -0,0 +1,140 @@
+
+#pragma strict
+
+@script ExecuteInEditMode
+@script RequireComponent (Camera)
+@script AddComponentMenu ("Image Effects/Rendering/Global Fog")
+
+class GlobalFog extends PostEffectsBase {
+	
+	private var CAMERA_NEAR : float = 0.5f;
+	private var CAMERA_FAR : float = 50.0f;
+	private var CAMERA_FOV : float = 60.0f;	
+	private var CAMERA_ASPECT_RATIO : float = 1.333333f;
+
+	public var distanceFog : boolean = true;
+	public var heightFog : boolean = true;
+	public var height : float = 1.0f;
+	@Range(0.001f,10.0f)
+	public var heightDensity : float = 2.0f;
+	public var startDistance : float = 0.0f;
+
+	public var fogShader : Shader;
+	private var fogMaterial : Material = null;	
+	
+	function CheckResources () : boolean {	
+		CheckSupport (true);
+	
+		fogMaterial = CheckShaderAndCreateMaterial (fogShader, fogMaterial);
+		
+		if(!isSupported)
+			ReportAutoDisable ();
+		return isSupported;				
+	}
+
+	@ImageEffectOpaque
+	function OnRenderImage (source : RenderTexture, destination : RenderTexture) {	
+		if (CheckResources()==false || (!distanceFog && !heightFog))
+		{
+			Graphics.Blit (source, destination);
+			return;
+		}
+			
+		CAMERA_NEAR = GetComponent(Camera).nearClipPlane;
+		CAMERA_FAR = GetComponent(Camera).farClipPlane;
+		CAMERA_FOV = GetComponent(Camera).fieldOfView;
+		CAMERA_ASPECT_RATIO = GetComponent(Camera).aspect;
+	
+		var frustumCorners : Matrix4x4 = Matrix4x4.identity;		
+		var vec : Vector4;
+		var corner : Vector3;
+	
+		var fovWHalf : float = CAMERA_FOV * 0.5f;
+		
+		var toRight : Vector3 = GetComponent(Camera).transform.right * CAMERA_NEAR * Mathf.Tan (fovWHalf * Mathf.Deg2Rad) * CAMERA_ASPECT_RATIO;
+		var toTop : Vector3 = GetComponent(Camera).transform.up * CAMERA_NEAR * Mathf.Tan (fovWHalf * Mathf.Deg2Rad);
+	
+		var topLeft : Vector3 = (GetComponent(Camera).transform.forward * CAMERA_NEAR - toRight + toTop);
+		var CAMERA_SCALE : float = topLeft.magnitude * CAMERA_FAR/CAMERA_NEAR;	
+			
+		topLeft.Normalize();
+		topLeft *= CAMERA_SCALE;
+	
+		var topRight : Vector3 = (GetComponent(Camera).transform.forward * CAMERA_NEAR + toRight + toTop);
+		topRight.Normalize();
+		topRight *= CAMERA_SCALE;
+		
+		var bottomRight : Vector3 = (GetComponent(Camera).transform.forward * CAMERA_NEAR + toRight - toTop);
+		bottomRight.Normalize();
+		bottomRight *= CAMERA_SCALE;
+		
+		var bottomLeft : Vector3 = (GetComponent(Camera).transform.forward * CAMERA_NEAR - toRight - toTop);
+		bottomLeft.Normalize();
+		bottomLeft *= CAMERA_SCALE;
+				
+		frustumCorners.SetRow (0, topLeft); 
+		frustumCorners.SetRow (1, topRight);		
+		frustumCorners.SetRow (2, bottomRight);
+		frustumCorners.SetRow (3, bottomLeft);		
+		
+		var camPos = GetComponent(Camera).transform.position;
+		var FdotC : float = camPos.y-height;
+		var paramK : float = (FdotC <= 0.0f ? 1.0f : 0.0f);
+		fogMaterial.SetMatrix ("_FrustumCornersWS", frustumCorners);
+		fogMaterial.SetVector ("_CameraWS", camPos);
+		fogMaterial.SetVector ("_HeightParams", Vector4 (height, FdotC, paramK, heightDensity*0.5f));
+		fogMaterial.SetVector ("_DistanceParams", Vector4 (-Mathf.Max(startDistance,0.0f), 0, 0, 0));
+		
+		var sceneMode = RenderSettings.fogMode;
+		var sceneDensity = RenderSettings.fogDensity;
+		var sceneStart = RenderSettings.fogStartDistance;
+		var sceneEnd = RenderSettings.fogEndDistance;
+		var sceneParams : Vector4;
+		var linear : boolean = (sceneMode == UnityEngine.FogMode.Linear);
+		var diff : float = linear ? sceneEnd - sceneStart : 0.0f;
+		var invDiff : float = Mathf.Abs(diff) > 0.0001f ? 1.0f / diff : 0.0f;
+		sceneParams.x = sceneDensity * 1.2011224087f; // density / sqrt(ln(2)), used by Exp2 fog mode
+		sceneParams.y = sceneDensity * 1.4426950408f; // density / ln(2), used by Exp fog mode
+		sceneParams.z = linear ? -invDiff : 0.0f;
+		sceneParams.w = linear ? sceneEnd * invDiff : 0.0f;
+		fogMaterial.SetVector ("_SceneFogParams", sceneParams);
+		fogMaterial.SetInt ("_SceneFogMode", sceneMode);
+		
+		var pass : int = 0;
+		if (distanceFog && heightFog)
+			pass = 0; // distance + height
+		else if (distanceFog)
+			pass = 1; // distance only
+		else
+			pass = 2; // height only
+		CustomGraphicsBlit (source, destination, fogMaterial, pass);
+	}
+	
+	static function CustomGraphicsBlit (source : RenderTexture, dest : RenderTexture, fxMaterial : Material, passNr : int) {
+		RenderTexture.active = dest;
+		       
+		fxMaterial.SetTexture ("_MainTex", source);	        
+	        	        
+		GL.PushMatrix ();
+		GL.LoadOrtho ();	
+	    	
+		fxMaterial.SetPass (passNr);	
+		
+	    GL.Begin (GL.QUADS);
+							
+		GL.MultiTexCoord2 (0, 0.0f, 0.0f); 
+		GL.Vertex3 (0.0f, 0.0f, 3.0f); // BL
+		
+		GL.MultiTexCoord2 (0, 1.0f, 0.0f); 
+		GL.Vertex3 (1.0f, 0.0f, 2.0f); // BR
+		
+		GL.MultiTexCoord2 (0, 1.0f, 1.0f); 
+		GL.Vertex3 (1.0f, 1.0f, 1.0f); // TR
+		
+		GL.MultiTexCoord2 (0, 0.0f, 1.0f); 
+		GL.Vertex3 (0.0f, 1.0f, 0.0); // TL
+		
+		GL.End ();
+	    GL.PopMatrix ();
+	}		
+}