private static IEnumerator UpdateLoop()
{
var renderEventFunc = NativeApi.GetRenderEventFunc();
var shouldConvertToBgra = SystemInfo.graphicsDeviceType == GraphicsDeviceType.Direct3D11;
var loggedAspectRatioWarning = false;
// Waits until the end of the first frame until capturing the screen size,
// because it might be incorrect when first querying it.
yield return(k_WaitForEndOfFrame);
// Creates a target texture to capture the preview window onto.
// Some video encoders prefer the dimensions to be a multiple of 16.
var targetWidth = RoundUpToNearestMultipleOf16(Screen.width);
var targetHeight = RoundUpToNearestMultipleOf16(Screen.height);
var screenTexture = new RenderTexture(targetWidth, targetHeight, 0);
var targetTexture = screenTexture;
RenderTexture bgrTexture = null;
if (shouldConvertToBgra)
{
bgrTexture = new RenderTexture(screenTexture.width, screenTexture.height, 0, RenderTextureFormat.BGRA32);
targetTexture = bgrTexture;
}
// Begins update loop. The coroutine will cease when the
// ARCoreSession component it's called from is destroyed.
for (;;)
{
yield return(k_WaitForEndOfFrame);
NativeApi.Update();
InstantPreviewInput.Update();
AddInstantPreviewTrackedPoseDriverWhenNeeded();
Graphics.Blit(null, screenTexture);
if (shouldConvertToBgra)
{
Graphics.Blit(screenTexture, bgrTexture);
}
var cameraTexture = Frame.CameraImage.Texture;
if (!loggedAspectRatioWarning && cameraTexture != null)
{
var sourceWidth = cameraTexture.width;
var sourceHeight = cameraTexture.height;
var sourceAspectRatio = (float)sourceWidth / sourceHeight;
var destinationWidth = Screen.width;
var destinationHeight = Screen.height;
var destinationAspectRatio = (float)destinationWidth / destinationHeight;
if (Mathf.Abs(sourceAspectRatio - destinationAspectRatio) >
k_MaxTolerableAspectRatioDifference)
{
Debug.LogWarning(string.Format(k_MismatchedAspectRatioWarningFormatString, sourceWidth,
sourceHeight));
loggedAspectRatioWarning = true;
}
}
NativeApi.SendFrame(targetTexture.GetNativeTexturePtr());
GL.IssuePluginEvent(renderEventFunc, 1);
}
}
private static IEnumerator UpdateLoop(string adbPath)
{
var renderEventFunc = NativeApi.GetRenderEventFunc();
var shouldConvertToBgra =
SystemInfo.graphicsDeviceType == GraphicsDeviceType.Direct3D11;
var loggedAspectRatioWarning = false;
// Waits until the end of the first frame until capturing the screen size,
// because it might be incorrect when first querying it.
yield return(k_WaitForEndOfFrame);
var currentWidth = 0;
var currentHeight = 0;
var needToStartActivity = true;
var prevFrameLandscape = false;
RenderTexture screenTexture = null;
RenderTexture targetTexture = null;
RenderTexture bgrTexture = null;
// Begins update loop. The coroutine will cease when the
// ARCoreSession component it's called from is destroyed.
for (;;)
{
yield return(k_WaitForEndOfFrame);
var curFrameLandscape = Screen.width > Screen.height;
if (prevFrameLandscape != curFrameLandscape)
{
needToStartActivity = true;
}
prevFrameLandscape = curFrameLandscape;
if (needToStartActivity)
{
string activityName = curFrameLandscape ? "InstantPreviewLandscapeActivity" :
"InstantPreviewActivity";
string output;
string errors;
ShellHelper.RunCommand(adbPath,
"shell am start -S -n com.google.ar.core.instantpreview/." + activityName,
out output, out errors);
needToStartActivity = false;
}
// Creates a target texture to capture the preview window onto.
// Some video encoders prefer the dimensions to be a multiple of 16.
var targetWidth = RoundUpToNearestMultipleOf16(Screen.width);
var targetHeight = RoundUpToNearestMultipleOf16(Screen.height);
if (targetWidth != currentWidth || targetHeight != currentHeight)
{
screenTexture = new RenderTexture(targetWidth, targetHeight, 0);
targetTexture = screenTexture;
if (shouldConvertToBgra)
{
bgrTexture = new RenderTexture(
screenTexture.width, screenTexture.height, 0,
RenderTextureFormat.BGRA32);
targetTexture = bgrTexture;
}
currentWidth = targetWidth;
currentHeight = targetHeight;
}
NativeApi.Update();
InstantPreviewInput.Update();
if (NativeApi.AppShowedTouchWarning())
{
Debug.LogWarning(k_InstantPreviewInputWarning);
NativeApi.UnityLoggedTouchWarning();
}
AddInstantPreviewTrackedPoseDriverWhenNeeded();
Graphics.Blit(null, screenTexture);
if (shouldConvertToBgra)
{
Graphics.Blit(screenTexture, bgrTexture);
}
var cameraTexture = Frame.CameraImage.Texture;
if (!loggedAspectRatioWarning && cameraTexture != null)
{
var sourceWidth = cameraTexture.width;
var sourceHeight = cameraTexture.height;
var sourceAspectRatio = (float)sourceWidth / sourceHeight;
var destinationWidth = Screen.width;
var destinationHeight = Screen.height;
var destinationAspectRatio = (float)destinationWidth / destinationHeight;
if (Mathf.Abs(sourceAspectRatio - destinationAspectRatio) >
k_MaxTolerableAspectRatioDifference)
{
Debug.LogWarningFormat(
k_MismatchedAspectRatioWarningFormatString, sourceAspectRatio,
destinationAspectRatio, sourceWidth, sourceHeight);
loggedAspectRatioWarning = true;
}
}
NativeApi.SendFrame(targetTexture.GetNativeTexturePtr());
GL.IssuePluginEvent(renderEventFunc, (int)ApiRenderEvent.UpdateCubemapTexture);
}
}
