[unconfirmed] addRenderTargetTexture crashes when tex exists

[gerdb]

hi, i always got a runtime error when rendering my things.

I narrowed it down to

Code: Select all

tex = driver->addRenderTargetTexture( core::dimension2du(w,h), "rt_ssd", video::ECF_A8R8G8B8 );

this always crashed when the texture with name "rt_ssd" already existed and the crash was gone when i first tested the texname and removed it when exist.

Code: Select all

    video::ITexture* tex = 0;
        if (driver->getTexture("rt_ssd"))
        {
                                printf("removeTexture()\n");
            driver->removeTexture(driver->getTexture("rt_ssd"));
        }
 
        tex = driver->addRenderTargetTexture( core::dimension2du(w,h), "rt_ssd", video::ECF_A8R8G8B8 );
 

EDIT:

//! Adds a new render target texture to the texture cache.
/** \param size Size of the texture, in pixels. Width and
height should be a power of two (e.g. 64, 128, 256, 512, ...)
and it should not be bigger than the backbuffer, because it
shares the zbuffer with the screen buffer.

how can i get the size of the backbuffer and why does it share anything with my rtt?

i like to create a render target texture 8192x8192 (max tex size of my GraphicsCard) for offscreen rendering without any damn limitation.

thx

[hendu]

I think that doc is outdated. The depth of the window is not shared with RTTs, at least using any modern path.

[CuteAlien]

Hm, just calling 2x addRenderTargetTexture with the same name does not produce a crash here. Can you reduce this to a small example which can be compiled and reproduces the crash please? Otherwise I don't really know how to reproduce this.