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//======= Copyright (c) Valve Corporation, All rights reserved. ===============
//
// Purpose: Handles rendering to the game view window
//
//=============================================================================
using UnityEngine;
using Valve.VR;
[RequireComponent(typeof(Camera))]
public class SteamVR_GameView : MonoBehaviour
{
#if (UNITY_5_3 || UNITY_5_2 || UNITY_5_1 || UNITY_5_0) // DEPRECATED in Unity 5.4+
public float scale = 1.5f;
public bool drawOverlay = true;
static Material overlayMaterial;
static Texture2D mirrorTexture;
void OnEnable()
{
if (overlayMaterial == null)
{
overlayMaterial = new Material(Shader.Find("Custom/SteamVR_Overlay"));
}
// Use OpenVR's mirror texture if available.
if (mirrorTexture == null)
{
var vr = SteamVR.instance;
if (vr != null && vr.graphicsAPI == EGraphicsAPIConvention.API_DirectX)
{
var tex = new Texture2D(2, 2);
var nativeTex = System.IntPtr.Zero;
if (vr.compositor.GetMirrorTextureD3D11(EVREye.Eye_Right, tex.GetNativeTexturePtr(), ref nativeTex) == EVRCompositorError.None)
{
uint width = 0, height = 0;
OpenVR.System.GetRecommendedRenderTargetSize(ref width, ref height);
mirrorTexture = Texture2D.CreateExternalTexture((int)width, (int)height, TextureFormat.RGBA32, false, false, nativeTex);
}
}
}
}
void OnPostRender()
{
var vr = SteamVR.instance;
var camera = GetComponent<Camera>();
var aspect = scale * camera.aspect / vr.aspect;
var x0 = -scale;
var x1 = scale;
var y0 = aspect;
var y1 = -aspect;
var blitMaterial = SteamVR_Camera.blitMaterial;
if (mirrorTexture != null)
blitMaterial.mainTexture = mirrorTexture;
else
blitMaterial.mainTexture = SteamVR_Camera.GetSceneTexture(camera.hdr);
GL.PushMatrix();
GL.LoadOrtho();
#if !(UNITY_5_0)
blitMaterial.SetPass(0);
#else
blitMaterial.SetPass(QualitySettings.activeColorSpace == ColorSpace.Linear ? 1 : 0);
#endif
GL.Begin(GL.QUADS);
GL.TexCoord2(0.0f, 0.0f); GL.Vertex3(x0, y0, 0);
GL.TexCoord2(1.0f, 0.0f); GL.Vertex3(x1, y0, 0);
GL.TexCoord2(1.0f, 1.0f); GL.Vertex3(x1, y1, 0);
GL.TexCoord2(0.0f, 1.0f); GL.Vertex3(x0, y1, 0);
GL.End();
GL.PopMatrix();
var overlay = SteamVR_Overlay.instance;
if (overlay && overlay.texture && overlayMaterial && drawOverlay)
{
var texture = overlay.texture;
overlayMaterial.mainTexture = texture;
var u0 = 0.0f;
var v0 = 1.0f - (float)Screen.height / texture.height;
var u1 = (float)Screen.width / texture.width;
var v1 = 1.0f;
GL.PushMatrix();
GL.LoadOrtho();
#if !(UNITY_5_0)
overlayMaterial.SetPass(QualitySettings.activeColorSpace == ColorSpace.Linear ? 1 : 0);
#else
overlayMaterial.SetPass(0);
#endif
GL.Begin(GL.QUADS);
GL.TexCoord2(u0, v0); GL.Vertex3(-1, -1, 0);
GL.TexCoord2(u1, v0); GL.Vertex3( 1, -1, 0);
GL.TexCoord2(u1, v1); GL.Vertex3( 1, 1, 0);
GL.TexCoord2(u0, v1); GL.Vertex3(-1, 1, 0);
GL.End();
GL.PopMatrix();
}
}
#endif
}
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