Re: [Mesa3d-users] ostest1.c osdemo failed with solaris 10 build

[Brian P. <br...@vm...>]

Joe Miller wrote:
> Hi,
> 
> I just downloaded Mesa 7.8.1 and built it on Solaris 10. After getting the libraries to compile, I attempted to verify the build using the demo apps. In particular I use the offscreen rendering mesa libraries provide. However, when I ran the ostest1 demo, the test program fails on to retrieve the correct size for the GL_RED_BITS. It seems to always be returning 8 even though the context was set to a large data type.
> 
> In particular the lines of code that are failing include
> 
> <snip>
>    /* Bind the buffer to the context and make it current */
>    if (!OSMesaMakeCurrent( ctx, buffer, type, WIDTH, HEIGHT )) {
>       printf("OSMesaMakeCurrent (%d bits/channel) failed!\n", bits);
>       free(buffer);
>       OSMesaDestroyContext(ctx);
>       return 0;
>    }
> 
>    /* sanity checks */
>    glGetIntegerv(GL_RED_BITS, &cBits);
>    assert(cBits == bits);
> <snip>
> 
> where type would be something other than GL_UNSIGNED_BYTE and therefore bits something larger than 8. The assert fails. I have version 7.0.3 running and this test passes. Furthermore, if I remove the sanity check the images come out correct.
> 
> I was wondering if anyone has exprienced the same issue? I've built on Solaris 10 using SunStudio 12 compiler. If you need any more information. Please let me know.
> 
> Thanks for the help.

Mesa must be specially compiled to support 16 and 32-bit / channel 
rendering.

Specifically, pass -DCHAN_BITS=16 or -DCHAN_BITS=32 to the compiler. 
The linux-osmesa16 and linux-osmes32 configs are examples.  It should 
be easy to adapt one of those to Solaris.

-Brian