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129 lines
4.2 KiB
C#
129 lines
4.2 KiB
C#
//======= Copyright (c) Valve Corporation, All rights reserved. ===============
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//
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// Purpose: CameraFade script adapted to work with SteamVR.
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//
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// Usage: Add to your top level SteamVR_Camera (the one with ApplyDistoration
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// checked) and drag a reference to this component into SteamVR_Camera
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// RenderComponents list. Then call the static helper function
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// SteamVR_Fade.Start with the desired color and duration.
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// Use a duration of zero to set the start color.
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//
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// Example: Fade down from black over one second.
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// SteamVR_Fade.Start(Color.black, 0);
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// SteamVR_Fade.Start(Color.clear, 1);
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//
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// Note: This component is provided to fade out a single camera layer's
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// scene view. If instead you want to fade the entire view, use:
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// SteamVR_Fade.View(Color.black, 1);
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// (Does not affect the game view, however.)
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//
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//=============================================================================
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using UnityEngine;
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using Valve.VR;
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namespace Valve.VR
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{
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public class SteamVR_Fade : MonoBehaviour
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{
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private Color currentColor = new Color(0, 0, 0, 0); // default starting color: black and fully transparent
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private Color targetColor = new Color(0, 0, 0, 0); // default target color: black and fully transparent
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private Color deltaColor = new Color(0, 0, 0, 0); // the delta-color is basically the "speed / second" at which the current color should change
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private bool fadeOverlay = false;
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static public void Start(Color newColor, float duration, bool fadeOverlay = false)
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{
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SteamVR_Events.Fade.Send(newColor, duration, fadeOverlay);
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}
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static public void View(Color newColor, float duration)
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{
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var compositor = OpenVR.Compositor;
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if (compositor != null)
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compositor.FadeToColor(duration, newColor.r, newColor.g, newColor.b, newColor.a, false);
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}
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#if TEST_FADE_VIEW
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void Update()
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{
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if (Input.GetKeyDown(KeyCode.Space))
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{
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SteamVR_Fade.View(Color.black, 0);
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SteamVR_Fade.View(Color.clear, 1);
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}
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}
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#endif
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public void OnStartFade(Color newColor, float duration, bool fadeOverlay)
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{
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if (duration > 0.0f)
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{
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targetColor = newColor;
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deltaColor = (targetColor - currentColor) / duration;
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}
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else
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{
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currentColor = newColor;
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}
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}
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static Material fadeMaterial = null;
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static int fadeMaterialColorID = -1;
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void OnEnable()
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{
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if (fadeMaterial == null)
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{
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fadeMaterial = new Material(Shader.Find("Custom/SteamVR_Fade"));
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fadeMaterialColorID = Shader.PropertyToID("fadeColor");
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}
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SteamVR_Events.Fade.Listen(OnStartFade);
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SteamVR_Events.FadeReady.Send();
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}
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void OnDisable()
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{
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SteamVR_Events.Fade.Remove(OnStartFade);
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}
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void OnPostRender()
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{
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if (currentColor != targetColor)
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{
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// if the difference between the current alpha and the desired alpha is smaller than delta-alpha * deltaTime, then we're pretty much done fading:
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if (Mathf.Abs(currentColor.a - targetColor.a) < Mathf.Abs(deltaColor.a) * Time.deltaTime)
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{
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currentColor = targetColor;
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deltaColor = new Color(0, 0, 0, 0);
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}
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else
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{
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currentColor += deltaColor * Time.deltaTime;
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}
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if (fadeOverlay)
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{
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var overlay = SteamVR_Overlay.instance;
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if (overlay != null)
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{
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overlay.alpha = 1.0f - currentColor.a;
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}
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}
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}
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if (currentColor.a > 0 && fadeMaterial)
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{
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fadeMaterial.SetColor(fadeMaterialColorID, currentColor);
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fadeMaterial.SetPass(0);
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GL.Begin(GL.QUADS);
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GL.Vertex3(-1, -1, 0);
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GL.Vertex3(1, -1, 0);
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GL.Vertex3(1, 1, 0);
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GL.Vertex3(-1, 1, 0);
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GL.End();
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}
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}
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}
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} |