[Bug 14481] New: glViewport has no effect.

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=14481

           Summary: glViewport has no effect.
           Product: Wine
           Version: CVS/GIT
          Platform: PC-x86-64
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: opengl
        AssignedTo: wine-bugs at winehq.org
        ReportedBy: mah at jump-ing.de


Created an attachment (id=14807)
 --> (http://bugs.winehq.org/attachment.cgi?id=14807)
log

To approach bug #10490 I built Wine from a current git and added a few trace
statements to ./dlls/opengl32/opengl_norm.c:

void WINAPI wine_glViewport( GLint x, GLint y, GLsizei width, GLsizei height )
{
  GLint params[2];
  TRACE("(%d, %d, %d, %d)\n", x, y, width, height );
  ENTER_GL();
  glGetIntegerv(GL_MAX_VIEWPORT_DIMS, params);
  TRACE("Viewport is: %d %d\n", params[0], params[1]);
  glViewport( x, y, width, height );
  glGetIntegerv(GL_MAX_VIEWPORT_DIMS, params);
  TRACE("Viewport is: %d %d\n", params[0], params[1]);
  LEAVE_GL();
}

Obviously, glViewport, as used by Catia, is a no-op. See the last few lines in
the attached log:

trace:opengl:wine_glViewport (0, 0, 852, 862)
trace:opengl:wine_glViewport Viewport is: 4096 4096
trace:opengl:wine_glViewport Viewport is: 4096 4096

No matter what's given to glViewport, ths port's size remains a lot bigger than
the screen is (1280x1024 pixels). Catia is running inside a window and 852x862
should be the size of the OpenGL view inside this.

I filed this bug in the hope it rings a bell somewhere and/or somebody has an
idea how to find out what's missing here. This is an Intel G31 graphics running
Ubuntu 8.04. Other (native) OpenGL apps run fine.


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