Unity組件：Edge Detection image effect 邊緣檢測圖像特效

Edge Detect image effect adds black edges to the image wherever color differences exceed some threshold.

邊緣檢測圖像特效在圖像中某些顏色差異較大的地方加入黑邊。

If more accurate geometry-based edge detection is required, the Standard Assets also provide a more sophisticated normal-based edge detection effect.

如果要求更加準(zhǔn)確的基于幾何信息的邊緣檢測，Standard Assets同樣提供了一個(gè)更加復(fù)雜的基于法線的邊緣檢測特效。

As with the other image effects, this effect is only available in Unity Pro and you must have the Pro Standard Assets installed before it becomes available.

和其他圖像特效一樣，該特效只能在Unity Pro上進(jìn)行使用，并且在使用之前必須安裝Pro Standard Assets。

Edge Detect image effect applied to the scene
場景中應(yīng)用了邊緣檢測圖像特效。

• Threshold 閾值
  Edges will be displayed wherever the color difference between neighboring pixels exceeds this value. Increasing the value will make edges less sensitive to texture or lighting changes.
  當(dāng)該像素與其鄰域的顏色差異大于該值時(shí)將顯示邊緣。增加該值將會(huì)使邊緣對(duì)紋理或亮度變化的敏感度降低。

Hardware support 硬件支持

This effect requires a graphics card with pixel shaders (2.0) or OpenGL ES 2.0. PC: NVIDIA cards since 2003 (GeForce FX), AMD cards since 2004 (Radeon 9500), Intel cards since 2005 (GMA 900); Mobile: OpenGL ES 2.0; Consoles: Xbox 360, PS3.

這個(gè)特效需要顯卡擁有像素著色器（2.0）或者OpenGL ES 2.0。臺(tái)式機(jī)：2003年以后的NVIDIA顯卡（GeForce FX），2004年以后的AMD顯卡（Radeon 9500），2005年以后的Intel卡（GMA 900）；移動(dòng)設(shè)備：OpenGL ES 2.0；控制臺(tái)： Xbox 360、 PS3。

All image effects automatically disable themselves when they can not run on end-users graphics card.

所有圖像特效如果無法在用戶顯卡上運(yùn)行時(shí)將會(huì)自動(dòng)被關(guān)閉。