[PD] [GEM-dev] gl stack underflow

[cyrille henry]

there is an exemple of how to use multiple texture / textunit in the gem exemple folder, in directory 10.GLSL


Matteo Sisti Sette a écrit :
> Wow wow wow!!!
> 
> It seems my underflow problem (now I was getting both underflows and 
> overflows) is in some way related to the use of texunits AND 
> [gemframebuffer]s.
> 
> I still have to understand how exactly the texunit thingie works (the 
> "texunit" message to [pix_texture] is not even documented btw), but I 
> had been able to use texunits in order to assign textures a "texunit" 
> and then refer to these numbers in the shader code to access textures, 
> without problems until I began to use them in addition to 
> gemframebuffers (without suspecting they could interact).
> 
> Well now I have just realized that [gemframebuffer] outputs a message 
> like "using texunit N", and I had some messages like this:
> 
> [loadbang]
> |
> [texunit 0(   // or 1
> |
> [pix_texture]
> 
> So I guess I was assigning this texture the same texunit that was used 
> by the gemframebuffer; I still have to figure out what it means but I 
> guess it is not good.
> 
> Removing the texunit messages, now the stack under/overflows seem to 
> have disappeared.
> 
> 
> Thanks again for your help
> 
> m.
> 
>