public override void OnRenderImage(Texture source, RenderTexture destination)
{
GetDimensions(out var width, out var height);
var tempRT = RenderTexture.GetTemporary(width, height);
base.OnRenderImage(source, tempRT);
rpMat.SetTexture("_ProsTex", tempRT);
rpMat.SetVector(SP.eyeGaze, EyeGaze.Get(eyeGazeSource, headset));
rpMat.SetVector(SP.headsetDiameter, headset.GetRetinalDiameter());
rpMat.SetFloat("_natural_vision_width", this.width);
rpMat.SetFloat("_natural_vision_saturation", saturation);
rpMat.SetFloat("_natural_vision_brightness", _brightness);
UpdateAcuity();
Graphics.Blit(Prosthesis.Source, destination, rpMat);
RenderTexture.ReleaseTemporary(tempRT);
}
/*
* Protected methods
*/
protected void Initialise(string phosShader, string tailShader)
{
// load shaders
phos = new Material(Shader.Find(phosShader));
tail = new Material(Shader.Find(tailShader));
if (phos == null || tail == null)
{
Debug.LogError($"{name} does not have a material.");
return;
}
// upload electrode/axon textures to the GPU
phos.SetTexture(SP.electrodeTexture, epiretinalData.GetPhospheneTexture(headset, pattern, layout));
tail.SetTexture(SP.axonTexture, epiretinalData.GetAxonTexture(headset));
// create texture for the fading data
fadeRT = new DoubleBufferedRenderTexture(headset.GetWidth(), headset.GetHeight());
fadeRT.Initialise(new Color(1, 0, 0, 0));
// overrides
if (overrideCameraFOV)
{
Prosthesis.Instance.Camera.fieldOfView = headset.GetFieldOfView(Axis.Vertical);
}
if (overrideRefreshRate)
{
Application.targetFrameRate = headset.GetRefreshRate();
}
// cache texture-related variables
lastHeadset = headset;
lastPattern = pattern;
lastLayout = layout;
// initialise eye gaze tracking
EyeGaze.Initialise(eyeGazeSource, headset);
// initialise camera target eye
UpdateCameraTargetEye();
}
/*
* Private methods
*/
private void UpdatePerFrameData()
{
// pulse
phos.SetInt(SP.pulse, Pulse ? 1 : 0);
if (useFading)
{
// fading (can safely be uploaded every frame because it is just a RenderTexture pointer)
phos.SetTexture(SP.fadeTexture, fadeRT.Back);
}
// eye gaze
var eyeGaze = EyeGaze.Get(eyeGazeSource, headset);
phos.SetVector(SP.eyeGaze, eyeGaze);
tail.SetVector(SP.eyeGaze, eyeGaze);
// eye gaze delta
phos.SetVector(SP.eyeGazeDelta, EyeGaze.GetDelta(eyeGazeSource, headset));
}