IEnumerator ReadPixelsFromBuffer()
{
yield return(new WaitForEndOfFrame());
// Set active rendertexture to the ground texture,
RenderTexture currentRT = BackgroundCamera.GetBackgroundTexture();
RenderTexture.active = currentRT;
m_samplerTex.ReadPixels(new Rect(0, 0, m_groundTex.width, m_groundTex.height), 0, 0);
m_samplerTex.Apply();
// Revert active rendertexture to null.
RenderTexture.active = null;
Vector3 v3GrassPos = new Vector3();
Vector3 v3PlaneOrigin = m_grassPlane.transform.position - new Vector3(m_grassPlane.transform.lossyScale.x, 0, m_grassPlane.transform.lossyScale.z) * 5;
for (int i = 0; i < m_groundTex.width; ++i)
{
for (int j = 0; j < m_groundTex.width; ++j)
{
Color pixelColor = m_samplerTex.GetPixel(i, j);
Debug.Log(pixelColor);
if (pixelColor.r >= 0.1f)
{
// Randomly create grass.
int nRandVal = Random.Range(0, 100);
if (nRandVal < 2 && m_grassPrefab != null)
{
// Determine position of grass.
v3GrassPos.x = (i / (float)m_groundTex.width) * m_grassPlane.transform.lossyScale.x * 10;
v3GrassPos.z = (j / (float)m_groundTex.height) * m_grassPlane.transform.lossyScale.z * 10;
v3GrassPos += v3PlaneOrigin;
v3GrassPos.y = m_grassPlane.transform.position.y;
// Instaniate grass object.
GameObject grassInstance = Instantiate(m_grassPrefab);
grassInstance.transform.position = v3GrassPos;
}
}
}
}
m_bRender = false;
}
