hi there opensg folks,
lately i am working a bit on antialias via accumulation buffer.
I am using as a guideline the standard antialias full scene example
of the opengl red book.
The basic code looks like:
glClear (GL_ACCUM_BUFFER_BIT);
for (jitter = 0;jitter<8;jitter++)
{
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
accPerspective (m_pCamera->getFov(),
GLdouble) viewport[2]/(GLdouble) viewport[3],
_pCamera->getNear(), m_pCamera->getFar(),
ITTER[8][jitter].x(), JITTER[8][jitter].y(),
.0, 0.0, 1.0);
drawGeometries()
glAccum (GL_ACCUM, 1.0/8.0);
}
glDrawBuffer(GL_FRONT);
glAccum (GL_RETURN, 1.0);
where the accPerspective basically does a:
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glFrustum(left + dx, right + dx, bottom + dy, top + dy, zNear, zFar);
My question is:
is there a way to alter the frustum of the perspective camera i am using
with the values set in the glFrustum function?
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