private static void RenderPreviewAtlas(RenderTexture rt, GBillboardCreatorArgs args)
{
Clear(rt, Color.clear);
if (args.AtlasMaterial == null)
{
return;
}
args.Mode = GBillboardRenderMode.Atlas;
Vector2 viewPortSize = new Vector2(1f / args.Column, 1f / args.Row);
Vector2 viewPortPosition = new Vector2(0, 0);
RenderTexture tempRt = new RenderTexture(Mathf.RoundToInt(viewPortSize.x * rt.width), Mathf.RoundToInt(viewPortSize.y * rt.height), 24, RenderTextureFormat.ARGB32, RenderTextureReadWrite.Linear);
Camera cam = CreatePreviewCamera(args);
cam.targetTexture = tempRt;
GameObject g = CreatePreviewGameObject(cam.transform, args);
int imageCount = args.Row * args.Column;
float angleStep = 360f / imageCount;
for (int y = 0; y < args.Row; ++y)
{
for (int x = 0; x < args.Column; ++x)
{
Clear(tempRt, Color.clear);
g.transform.rotation = Quaternion.Euler(0, GUtilities.To1DIndex(x, y, args.Column) * angleStep - 90, 0);
cam.Render();
viewPortPosition = new Vector2(x * viewPortSize.x, y * viewPortSize.y);
GCommon.DrawTexture(rt, tempRt, new Rect(viewPortPosition, viewPortSize), GInternalMaterials.UnlitTransparentMaterial);
}
}
cam.targetTexture = null;
GUtilities.DestroyGameobject(cam.gameObject);
GUtilities.DestroyGameobject(g);
tempRt.Release();
GUtilities.DestroyObject(tempRt);
}