I having some difficulties again while working with render to texture. It's hard to explain it cause I tried various things and some of them work, some don't.
I create a p-buffer, I release it so that I can make it current and make some GL calls but in some circumstances wglReleaseTexImageARB fails.
GetLastError with FormatString says "The procedure could not be found"
What the hell does that mean???
Anyway, I made some changed and that part works and it still doesn't make any sense.
In another part, I want to render to this RTT, so again I call
and it fails with the same message.
so I decieded to remove wglMakeCurrent(NULL, NULL); and now it returns 0 but the error message is "The operation completed successfully"
and then wglMakeCurrent(TexDC, TexGL);
returns 1 but nothing seems to be rendered to the texture. It always remains black.
The only thing that might explain it is that this is a MDI app with a single GL window.
When I worked with simple window or dialog based window, I had no such problems.
I must say that wgl functions suck big time.