Rendering to Custom Buffer for Post-Processing

[nick.ace]

Is it possible to render to a custom buffer for post-processing? (i.e., not the depth, normal, or diffuse buffers)

[Ma-Shell]

[App.h]:

Buffer* mybuffer;
Buffer* mainbuffer;
Texture* mytexture;
Texture* mydepthtexture;

 

[App.cpp, App::Start after context = Context::Create(window);]

mainbuffer = Buffer::GetCurrent();
mybuffer = Buffer::Create(context->GetWidth(), context->GetHeight(), 2, 0);
mytexture = Texture::Create(context->GetWidth(), context->GetHeight(),Texture::RGBA,0,1,0);
mydepthtexture = Texture::Create(context->GetWidth(), context->GetHeight(), Texture::Depth, 0, 1, 0);
mytexture->SetFilter(Texture::Smooth);
mybuffer->SetColorTexture(foregroundtexture1);
mybuffer->SetDepthTexture(foregrounddepthtexture1);
mybuffer->Disable();

 

[when rendering (normally in App::Loop())]

world->Update();
Buffer::SetCurrent(mybuffer);
mybuffer->Enable();
world->Render();
mybuffer->Disable();
Buffer::SetCurrent(mainbuffer);

[nick.ace]

Sorry, I think I need to reword my question. I'm trying to write to a custom buffer using a model fragment shader. I want to access this buffer using a post-process shader. Is there a way to do this? Right now the only way I can think of accomplishing this is to cram values into the depth/normal/diffuse buffers, but then that messes up other post-processing effects.