Fill ShaderData preview

On 15/06/2017 at 02:54, xxxxxxxx wrote:

User Information:
Cinema 4D Version:   R18 
Platform:   Windows  ;   
Language(s) :     C++  ;


I have a ShaderData plugin that I need to set value to its preview.
I know I Have to use InitRender and FreeRender to setup and destroy my data.
The problem is that Output method feels a little bit slow since I have to set the value for each UV separately. Also, I use an external lib to calculate the shader that can be done in the InitRender.

Can I avoid Output and simply set the shader preview by copying the base bitmap ? Is there any message to which I have to respond to achieve that ?

Thank you very much for your time.

On 16/06/2017 at 02:20, xxxxxxxx wrote:


no, this is not possible. You can of course create the bitmap in InitRender() and then only sample (basically copy pixels) the bitmap in Output().

On 16/06/2017 at 05:16, xxxxxxxx wrote:

Thank you very much Andreas.