Question

How do I get detailed errors from a cg compile?

At the moment my code is something like:

prog = cgCreateProgramFromFile(
    context,
    CG_SOURCE,
    filename,
    proifile,
    null,null);
std::cout << cgGetErrorString(cgGetError());

But all I get is “The compile returned an error.”

Is there any way to get a more involved error message, like glGetShaderiv with GL_COMPILE_STATUS for opengl shaders?

Can’t find anything in the reference but is seems like a fairly basic requirement.

I am running cgc on the shaders first with no code generation to check for errors but that doesn’t catch everything.

Thanks.

Answer 1

In the case of a compile error, you must use cgGetLastListing(CGcontext) instead of cgGetError(void).

From the Cg documentation for cgGetLastListing(CGcontext):

Each Cg context maintains a
NULL-terminated string containing
warning and error messages generated
by the Cg compiler, state managers and
the like. cgGetLastListing allows
applications and custom state managers
to query the listing text.

cgGetLastListing returns the currrent
listing string for the given
CGcontext. When a Cg runtime error
occurs, applications can use the
listing text from the appropriate
context to provide the user with
detailed information about the error.