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-rwxr-xr-x[-rw-r--r--]indra/llmath/llcamera.cpp172
1 files changed, 128 insertions, 44 deletions
diff --git a/indra/llmath/llcamera.cpp b/indra/llmath/llcamera.cpp
index 22ba26f99b..ff90532f75 100644..100755
--- a/indra/llmath/llcamera.cpp
+++ b/indra/llmath/llcamera.cpp
@@ -42,6 +42,11 @@ LLCamera::LLCamera() :
mPlaneCount(6),
mFrustumCornerDist(0.f)
{
+ for (U32 i = 0; i < PLANE_MASK_NUM; i++)
+ {
+ mPlaneMask[i] = PLANE_MASK_NONE;
+ }
+
calculateFrustumPlanes();
}
@@ -52,6 +57,11 @@ LLCamera::LLCamera(F32 vertical_fov_rads, F32 aspect_ratio, S32 view_height_in_p
mPlaneCount(6),
mFrustumCornerDist(0.f)
{
+ for (U32 i = 0; i < PLANE_MASK_NUM; i++)
+ {
+ mPlaneMask[i] = PLANE_MASK_NONE;
+ }
+
mAspect = llclamp(aspect_ratio, MIN_ASPECT_RATIO, MAX_ASPECT_RATIO);
mNearPlane = llclamp(near_plane, MIN_NEAR_PLANE, MAX_NEAR_PLANE);
if(far_plane < 0) far_plane = DEFAULT_FAR_PLANE;
@@ -87,14 +97,14 @@ F32 LLCamera::getMaxView() const
void LLCamera::setUserClipPlane(LLPlane& plane)
{
- mPlaneCount = 7;
- mAgentPlanes[6] = plane;
- mPlaneMask[6] = plane.calcPlaneMask();
+ mPlaneCount = AGENT_PLANE_USER_CLIP_NUM;
+ mAgentPlanes[AGENT_PLANE_USER_CLIP] = plane;
+ mPlaneMask[AGENT_PLANE_USER_CLIP] = plane.calcPlaneMask();
}
void LLCamera::disableUserClipPlane()
{
- mPlaneCount = 6;
+ mPlaneCount = AGENT_PLANE_NO_USER_CLIP_NUM;
}
void LLCamera::setView(F32 vertical_fov_rads)
@@ -161,31 +171,55 @@ size_t LLCamera::readFrustumFromBuffer(const char *buffer)
// ---------------- test methods ----------------
-S32 LLCamera::AABBInFrustum(const LLVector4a &center, const LLVector4a& radius)
+static const LLVector4a sFrustumScaler[] =
+{
+ LLVector4a(-1,-1,-1),
+ LLVector4a( 1,-1,-1),
+ LLVector4a(-1, 1,-1),
+ LLVector4a( 1, 1,-1),
+ LLVector4a(-1,-1, 1),
+ LLVector4a( 1,-1, 1),
+ LLVector4a(-1, 1, 1),
+ LLVector4a( 1, 1, 1) // 8 entries
+};
+
+bool LLCamera::isChanged()
{
- static const LLVector4a scaler[] = {
- LLVector4a(-1,-1,-1),
- LLVector4a( 1,-1,-1),
- LLVector4a(-1, 1,-1),
- LLVector4a( 1, 1,-1),
- LLVector4a(-1,-1, 1),
- LLVector4a( 1,-1, 1),
- LLVector4a(-1, 1, 1),
- LLVector4a( 1, 1, 1)
- };
+ bool changed = false;
+ for (U32 i = 0; i < mPlaneCount; i++)
+ {
+ U8 mask = mPlaneMask[i];
+ if (mask != 0xff && !changed)
+ {
+ changed = !mAgentPlanes[i].equal(mLastAgentPlanes[i]);
+ }
+ mLastAgentPlanes[i].set(mAgentPlanes[i]);
+ }
+
+ return changed;
+}
+
+S32 LLCamera::AABBInFrustum(const LLVector4a &center, const LLVector4a& radius, const LLPlane* planes)
+{
+ if(!planes)
+ {
+ //use agent space
+ planes = mAgentPlanes;
+ }
U8 mask = 0;
bool result = false;
LLVector4a rscale, maxp, minp;
LLSimdScalar d;
- for (U32 i = 0; i < mPlaneCount; i++)
+ U32 max_planes = llmin(mPlaneCount, (U32) AGENT_PLANE_USER_CLIP_NUM); // mAgentPlanes[] size is 7
+ for (U32 i = 0; i < max_planes; i++)
{
mask = mPlaneMask[i];
- if (mask != 0xff)
+ if (mask < PLANE_MASK_NUM)
{
- const LLPlane& p(mAgentPlanes[i]);
+ const LLPlane& p(planes[i]);
p.getAt<3>(d);
- rscale.setMul(radius, scaler[mask]);
+ rscale.setMul(radius, sFrustumScaler[mask]);
minp.setSub(center, rscale);
d = -d;
if (p.dot3(minp).getF32() > d)
@@ -204,32 +238,34 @@ S32 LLCamera::AABBInFrustum(const LLVector4a &center, const LLVector4a& radius)
return result?1:2;
}
+//exactly same as the function AABBInFrustum(...)
+//except uses mRegionPlanes instead of mAgentPlanes.
+S32 LLCamera::AABBInRegionFrustum(const LLVector4a& center, const LLVector4a& radius)
+{
+ return AABBInFrustum(center, radius, mRegionPlanes);
+}
-S32 LLCamera::AABBInFrustumNoFarClip(const LLVector4a& center, const LLVector4a& radius)
+S32 LLCamera::AABBInFrustumNoFarClip(const LLVector4a& center, const LLVector4a& radius, const LLPlane* planes)
{
- static const LLVector4a scaler[] = {
- LLVector4a(-1,-1,-1),
- LLVector4a( 1,-1,-1),
- LLVector4a(-1, 1,-1),
- LLVector4a( 1, 1,-1),
- LLVector4a(-1,-1, 1),
- LLVector4a( 1,-1, 1),
- LLVector4a(-1, 1, 1),
- LLVector4a( 1, 1, 1)
- };
+ if(!planes)
+ {
+ //use agent space
+ planes = mAgentPlanes;
+ }
U8 mask = 0;
bool result = false;
LLVector4a rscale, maxp, minp;
LLSimdScalar d;
- for (U32 i = 0; i < mPlaneCount; i++)
+ U32 max_planes = llmin(mPlaneCount, (U32) AGENT_PLANE_USER_CLIP_NUM); // mAgentPlanes[] size is 7
+ for (U32 i = 0; i < max_planes; i++)
{
mask = mPlaneMask[i];
- if ((i != 5) && (mask != 0xff))
+ if ((i != 5) && (mask < PLANE_MASK_NUM))
{
- const LLPlane& p(mAgentPlanes[i]);
+ const LLPlane& p(planes[i]);
p.getAt<3>(d);
- rscale.setMul(radius, scaler[mask]);
+ rscale.setMul(radius, sFrustumScaler[mask]);
minp.setSub(center, rscale);
d = -d;
if (p.dot3(minp).getF32() > d)
@@ -248,6 +284,13 @@ S32 LLCamera::AABBInFrustumNoFarClip(const LLVector4a& center, const LLVector4a&
return result?1:2;
}
+//exactly same as the function AABBInFrustumNoFarClip(...)
+//except uses mRegionPlanes instead of mAgentPlanes.
+S32 LLCamera::AABBInRegionFrustumNoFarClip(const LLVector4a& center, const LLVector4a& radius)
+{
+ return AABBInFrustumNoFarClip(center, radius, mRegionPlanes);
+}
+
int LLCamera::sphereInFrustumQuick(const LLVector3 &sphere_center, const F32 radius)
{
LLVector3 dist = sphere_center-mFrustCenter;
@@ -369,7 +412,7 @@ int LLCamera::sphereInFrustum(const LLVector3 &sphere_center, const F32 radius)
bool res = false;
for (int i = 0; i < 6; i++)
{
- if (mPlaneMask[i] != 0xff)
+ if (mPlaneMask[i] != PLANE_MASK_NONE)
{
float d = mAgentPlanes[i].dist(sphere_center);
@@ -541,14 +584,14 @@ void LLCamera::ignoreAgentFrustumPlane(S32 idx)
return;
}
- mPlaneMask[idx] = 0xff;
+ mPlaneMask[idx] = PLANE_MASK_NONE;
mAgentPlanes[idx].clear();
}
void LLCamera::calcAgentFrustumPlanes(LLVector3* frust)
{
- for (int i = 0; i < 8; i++)
+ for (int i = 0; i < AGENT_FRUSTRUM_NUM; i++)
{
mAgentFrustum[i] = frust[i];
}
@@ -560,22 +603,22 @@ void LLCamera::calcAgentFrustumPlanes(LLVector3* frust)
//order of planes is important, keep most likely to fail in the front of the list
//near - frust[0], frust[1], frust[2]
- mAgentPlanes[2] = planeFromPoints(frust[0], frust[1], frust[2]);
+ mAgentPlanes[AGENT_PLANE_NEAR] = planeFromPoints(frust[0], frust[1], frust[2]);
//far
- mAgentPlanes[5] = planeFromPoints(frust[5], frust[4], frust[6]);
+ mAgentPlanes[AGENT_PLANE_FAR] = planeFromPoints(frust[5], frust[4], frust[6]);
//left
- mAgentPlanes[0] = planeFromPoints(frust[4], frust[0], frust[7]);
+ mAgentPlanes[AGENT_PLANE_LEFT] = planeFromPoints(frust[4], frust[0], frust[7]);
//right
- mAgentPlanes[1] = planeFromPoints(frust[1], frust[5], frust[6]);
+ mAgentPlanes[AGENT_PLANE_RIGHT] = planeFromPoints(frust[1], frust[5], frust[6]);
//top
- mAgentPlanes[4] = planeFromPoints(frust[3], frust[2], frust[6]);
+ mAgentPlanes[AGENT_PLANE_TOP] = planeFromPoints(frust[3], frust[2], frust[6]);
//bottom
- mAgentPlanes[3] = planeFromPoints(frust[1], frust[0], frust[4]);
+ mAgentPlanes[AGENT_PLANE_BOTTOM] = planeFromPoints(frust[1], frust[0], frust[4]);
//cache plane octant facing mask for use in AABBInFrustum
for (U32 i = 0; i < mPlaneCount; i++)
@@ -584,6 +627,47 @@ void LLCamera::calcAgentFrustumPlanes(LLVector3* frust)
}
}
+//calculate regional planes from mAgentPlanes.
+//vector "shift" is the vector of the region origin in the agent space.
+void LLCamera::calcRegionFrustumPlanes(const LLVector3& shift, F32 far_clip_distance)
+{
+ F32 far_w;
+ {
+ LLVector3 p = getOrigin();
+ LLVector3 n(mAgentPlanes[5][0], mAgentPlanes[5][1], mAgentPlanes[5][2]);
+ F32 dd = n * p;
+ if(dd + mAgentPlanes[5][3] < 0) //signed distance
+ {
+ far_w = -far_clip_distance - dd;
+ }
+ else
+ {
+ far_w = far_clip_distance - dd;
+ }
+ far_w += n * shift;
+ }
+
+ F32 d;
+ LLVector3 n;
+ for(S32 i = 0 ; i < 7; i++)
+ {
+ if (mPlaneMask[i] != 0xff)
+ {
+ n.setVec(mAgentPlanes[i][0], mAgentPlanes[i][1], mAgentPlanes[i][2]);
+
+ if(i != 5)
+ {
+ d = mAgentPlanes[i][3] + n * shift;
+ }
+ else
+ {
+ d = far_w;
+ }
+ mRegionPlanes[i].setVec(n, d);
+ }
+ }
+}
+
void LLCamera::calculateFrustumPlanes(F32 left, F32 right, F32 top, F32 bottom)
{
LLVector3 a, b, c;
@@ -635,7 +719,7 @@ void LLCamera::calculateWorldFrustumPlanes()
LLVector3 center = mOrigin - mXAxis*mNearPlane;
mWorldPlanePos = center;
LLVector3 pnorm;
- for (int p=0; p<4; p++)
+ for (int p = 0; p < PLANE_NUM; p++)
{
mLocalPlanes[p].getVector3(pnorm);
LLVector3 norm = rotateToAbsolute(pnorm);
generated by cgit v1.2.3 (git 2.25.1) at 2025-08-09 09:52:47 +0000