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62 行
1.7 KiB
62 行
1.7 KiB
using UnityEngine;
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using System.Collections;
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[ExecuteInEditMode]
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[RequireComponent (typeof(Camera))]
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[AddComponentMenu ("Image Effects/Other/Screen Overlay")]
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class ScreenOverlay : PostEffectsBase {
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internal enum OverlayBlendMode {
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Additive = 0,
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ScreenBlend = 1,
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Multiply = 2,
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Overlay = 3,
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AlphaBlend = 4,
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}
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public OverlayBlendMode blendMode = OverlayBlendMode.Overlay;
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public float intensity = 1.0f;
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public Texture2D texture = null;
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public Shader overlayShader = null;
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private Material overlayMaterial = null;
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public override bool CheckResources (){
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CheckSupport (false);
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overlayMaterial = CheckShaderAndCreateMaterial (overlayShader, overlayMaterial);
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if (!isSupported)
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ReportAutoDisable ();
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return isSupported;
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}
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void OnRenderImage ( RenderTexture source , RenderTexture destination ){
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if (CheckResources() == false) {
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Graphics.Blit (source, destination);
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return;
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}
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Vector4 UV_Transform = new Vector4(1, 0, 0, 1);
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#if UNITY_WP8
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// WP8 has no OS support for rotating screen with device orientation,
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// so we do those transformations ourselves.
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if (Screen.orientation == ScreenOrientation.LandscapeLeft) {
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UV_Transform = new Vector4(0, -1, 1, 0);
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}
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if (Screen.orientation == ScreenOrientation.LandscapeRight) {
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UV_Transform = new Vector4(0, 1, -1, 0);
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}
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if (Screen.orientation == ScreenOrientation.PortraitUpsideDown) {
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UV_Transform = new Vector4(-1, 0, 0, -1);
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}
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#endif
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overlayMaterial.SetVector("_UV_Transform", UV_Transform);
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overlayMaterial.SetFloat ("_Intensity", intensity);
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overlayMaterial.SetTexture ("_Overlay", texture);
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Graphics.Blit (source, destination, overlayMaterial, (int) blendMode);
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}
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}
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