public void OnRenderImage(RenderTexture src, RenderTexture dest)
{
if (asProxyOf != null)
{
asProxyOf.OnRenderImage(src, dest);
return;
}
var matCnt = EnabledMaterials().Count();
if (matCnt == 0)
{
Graphics.Blit(src, dest);
return;
}
if (matCnt == 1)
{
var mat = EnabledMaterials().First();
Graphics.Blit(src, dest, mat);
return;
}
// double buffer pattern
RenderTexture[] buffers = { RenderTexture.GetTemporary(src.descriptor), dest };
// dest might be null
// for matCnt == 2, src -> buffers[0] -> dest, fine
// issue will occur when matCnt >= 3
var destUseTmp = dest == null && matCnt >= 3;
if (destUseTmp)
{
buffers[1] = RenderTexture.GetTemporary(src.descriptor);
}
// the final result is in buffers[1]
var from = matCnt % 2;
var first = true;
foreach (var mat in EnabledMaterials())
{
if (first)
{
Graphics.Blit(src, buffers[from], mat);
first = false;
continue;
}
Graphics.Blit(buffers[from], buffers[1 - from], mat);
from = 1 - from;
}
if (destUseTmp)
{
Graphics.Blit(buffers[1], dest);
RenderTexture.ReleaseTemporary(buffers[1]);
}
RenderTexture.ReleaseTemporary(buffers[0]);
}
static int OnRenderImage(IntPtr L)
{
try
{
ToLua.CheckArgsCount(L, 3);
Nova.PostProcessing obj = (Nova.PostProcessing)ToLua.CheckObject <Nova.PostProcessing>(L, 1);
UnityEngine.RenderTexture arg0 = (UnityEngine.RenderTexture)ToLua.CheckObject <UnityEngine.RenderTexture>(L, 2);
UnityEngine.RenderTexture arg1 = (UnityEngine.RenderTexture)ToLua.CheckObject <UnityEngine.RenderTexture>(L, 3);
obj.OnRenderImage(arg0, arg1);
return(0);
}
catch (Exception e)
{
return(LuaDLL.toluaL_exception(L, e));
}
}