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Explicitly set traversal mask for near camera.

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Don't depend on camera inheritance; set the mask in the traverse() method.
This commit is contained in:
timoore 2008-07-31 09:20:35 +00:00
parent 61812ef4b8
commit 7f49272e5e
1 changed files with 18 additions and 15 deletions
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27
src/Main/ViewPartitionNode.cxx
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@ -41,8 +41,7 @@ ViewPartitionNode::ViewPartitionNode():
const GLbitfield inheritanceMask = (CullSettings::ALL_VARIABLES
& ~CullSettings::COMPUTE_NEAR_FAR_MODE
& ~CullSettings::NEAR_FAR_RATIO
& ~CullSettings::CULLING_MODE
& ~CullSettings::CULL_MASK);
& ~CullSettings::CULLING_MODE);
int i = 1;
for (CameraList::iterator iter = cameras.begin();
iter != cameras.end();
@ -53,16 +52,12 @@ ViewPartitionNode::ViewPartitionNode():
camera->setComputeNearFarMode(CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
camera->setCullingMode(CullSettings::VIEW_FRUSTUM_CULLING);
camera->setRenderOrder(Camera::POST_RENDER, i);
// Slave camera "above" us clears the viewport. Perhaps the
// far camera doesn't need to clear the depth buffer; it
// probably doesn't make much difference.
camera->setClearMask(GL_DEPTH_BUFFER_BIT);
*iter = camera;
}
cameras[NEAR_CAMERA]->setClearMask(GL_DEPTH_BUFFER_BIT);
// Background camera will have cleared the buffers and doesn't
// touch the depth buffer
cameras[FAR_CAMERA]->setClearMask(GL_DEPTH_BUFFER_BIT);
// near camera shouldn't render the background.
cameras[NEAR_CAMERA]->setCullMask(cameras[NEAR_CAMERA]->getCullMask()
& ~simgear::BACKGROUND_BIT);
}
ViewPartitionNode::ViewPartitionNode(const ViewPartitionNode& rhs,
@ -92,14 +87,23 @@ void ViewPartitionNode::traverse(NodeVisitor& nv)
farPlanes[0] = parentFar;
nearPlanes[1] = parentNear;
farPlanes[1] = nearCameraFar;
for (int i = 0; i < 2; ++i) {
if (farPlanes[i] >0.0) {
ref_ptr<RefMatrix> newProj = new RefMatrix();
makeNewProjMat(projection, nearPlanes[i], farPlanes[i],
*newProj.get());
cv->pushProjectionMatrix(newProj.get());
if (i == NEAR_CAMERA) {
// The near camera shouldn't draw the background,
// which is hard to cull out.
unsigned int savedTraversalMask = cv->getTraversalMask();
cv->setTraversalMask(savedTraversalMask
& ~simgear::BACKGROUND_BIT);
cameras[i]->accept(nv);
cv->setTraversalMask(savedTraversalMask);
} else {
cameras[i]->accept(nv);
}
cv->popProjectionMatrix();
}
}
@ -187,7 +191,6 @@ void ViewPartitionNode::makeNewProjMat(Matrixd& oldProj, double znear,
0.0, 0.0, ratio, 0.0,
0.0, 0.0, center*ratio, 1.0));
}
}
namespace