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-rwxr-xr-xindra/llmath/llcamera.cpp86
-rwxr-xr-xindra/llmath/llcamera.h41
2 files changed, 71 insertions, 56 deletions
diff --git a/indra/llmath/llcamera.cpp b/indra/llmath/llcamera.cpp
index 6a1e3804be..4d1ee15661 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)
@@ -161,6 +171,18 @@ size_t LLCamera::readFrustumFromBuffer(const char *buffer)
// ---------------- test methods ----------------
+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()
{
bool changed = false;
@@ -179,17 +201,6 @@ bool LLCamera::isChanged()
S32 LLCamera::AABBInFrustum(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
@@ -200,14 +211,15 @@ S32 LLCamera::AABBInFrustum(const LLVector4a &center, const LLVector4a& radius,
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(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)
@@ -235,17 +247,6 @@ S32 LLCamera::AABBInRegionFrustum(const LLVector4a& center, const LLVector4a& ra
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
@@ -256,14 +257,15 @@ S32 LLCamera::AABBInFrustumNoFarClip(const LLVector4a& center, const LLVector4a&
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(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)
@@ -410,7 +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);
@@ -582,14 +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];
}
@@ -601,22 +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++)
@@ -693,7 +695,7 @@ 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);
diff --git a/indra/llmath/llcamera.h b/indra/llmath/llcamera.h
index a7cdcff4ac..946f9f8d84 100755
--- a/indra/llmath/llcamera.h
+++ b/indra/llmath/llcamera.h
@@ -76,26 +76,39 @@ public:
PLANE_RIGHT = 1,
PLANE_BOTTOM = 2,
PLANE_TOP = 3,
- PLANE_NUM = 4
+ PLANE_NUM = 4,
+ PLANE_MASK_NONE = 0xff // Disable this plane
};
enum {
PLANE_LEFT_MASK = (1<<PLANE_LEFT),
PLANE_RIGHT_MASK = (1<<PLANE_RIGHT),
PLANE_BOTTOM_MASK = (1<<PLANE_BOTTOM),
PLANE_TOP_MASK = (1<<PLANE_TOP),
- PLANE_ALL_MASK = 0xf
+ PLANE_ALL_MASK = 0xf,
};
enum
- {
+ { // Indexes to mAgentPlanes[] and mPlaneMask[]
AGENT_PLANE_LEFT = 0,
- AGENT_PLANE_RIGHT,
- AGENT_PLANE_NEAR,
- AGENT_PLANE_BOTTOM,
- AGENT_PLANE_TOP,
- AGENT_PLANE_FAR,
+ AGENT_PLANE_RIGHT = 1,
+ AGENT_PLANE_NEAR = 2,
+ AGENT_PLANE_BOTTOM = 3,
+ AGENT_PLANE_TOP = 4,
+ AGENT_PLANE_FAR = 5,
+ AGENT_PLANE_USER_CLIP = 6
+ };
+ enum
+ { // Sizes for mAgentPlanes[]. 7th entry is special case for user clip
+ AGENT_PLANE_NO_USER_CLIP_NUM = 6,
+ AGENT_PLANE_USER_CLIP_NUM = 7,
+ PLANE_MASK_NUM = 8 // 7 actually used, 8 is for alignment
};
+ enum
+ {
+ AGENT_FRUSTRUM_NUM = 8
+ };
+
enum {
HORIZ_PLANE_LEFT = 0,
HORIZ_PLANE_RIGHT = 1,
@@ -108,17 +121,17 @@ public:
};
private:
- LL_ALIGN_16(LLPlane mAgentPlanes[7]); //frustum planes in agent space a la gluUnproject (I'm a bastard, I know) - DaveP
- LL_ALIGN_16(LLPlane mRegionPlanes[7]); //frustum planes in a local region space, derived from mAgentPlanes
- LL_ALIGN_16(LLPlane mLastAgentPlanes[7]);
- U8 mPlaneMask[8]; // 8 for alignment
+ LL_ALIGN_16(LLPlane mAgentPlanes[AGENT_PLANE_USER_CLIP_NUM]); //frustum planes in agent space a la gluUnproject (I'm a bastard, I know) - DaveP
+ LL_ALIGN_16(LLPlane mRegionPlanes[AGENT_PLANE_USER_CLIP_NUM]); //frustum planes in a local region space, derived from mAgentPlanes
+ LL_ALIGN_16(LLPlane mLastAgentPlanes[AGENT_PLANE_USER_CLIP_NUM]);
+ U8 mPlaneMask[PLANE_MASK_NUM]; // 8 for alignment
F32 mView; // angle between top and bottom frustum planes in radians.
F32 mAspect; // width/height
S32 mViewHeightInPixels; // for ViewHeightInPixels() only
F32 mNearPlane;
F32 mFarPlane;
- LL_ALIGN_16(LLPlane mLocalPlanes[4]);
+ LL_ALIGN_16(LLPlane mLocalPlanes[PLANE_NUM]);
F32 mFixedDistance; // Always return this distance, unless < 0
LLVector3 mFrustCenter; // center of frustum and radius squared for ultra-quick exclusion test
F32 mFrustRadiusSquared;
@@ -130,7 +143,7 @@ private:
LLVector3 mWorldPlanePos; // Position of World Planes (may be offset from camera)
public:
- LLVector3 mAgentFrustum[8]; //8 corners of 6-plane frustum
+ LLVector3 mAgentFrustum[AGENT_FRUSTRUM_NUM]; //8 corners of 6-plane frustum
F32 mFrustumCornerDist; //distance to corner of frustum against far clip plane
LLPlane& getAgentPlane(U32 idx) { return mAgentPlanes[idx]; }
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-28 20:32:37 +0000