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-rw-r--r--indra/llmath/llvolume.cpp201
-rw-r--r--indra/llmath/llvolume.h4
2 files changed, 160 insertions, 45 deletions
diff --git a/indra/llmath/llvolume.cpp b/indra/llmath/llvolume.cpp
index 192c6157a8..34348230b6 100644
--- a/indra/llmath/llvolume.cpp
+++ b/indra/llmath/llvolume.cpp
@@ -4521,15 +4521,65 @@ BOOL LLVolumeFace::createUnCutCubeCap(LLVolume* volume, BOOL partial_build)
if (!partial_build)
{
- int idxs[] = {0,1,(grid_size+1)+1,(grid_size+1)+1,(grid_size+1),0};
- for(int gx = 0;gx<grid_size;gx++){
- for(int gy = 0;gy<grid_size;gy++){
- if (mTypeMask & TOP_MASK){
- for(int i=5;i>=0;i--)mIndices.push_back(vtop+(gy*(grid_size+1))+gx+idxs[i]);
- }else{
- for(int i=0;i<6;i++)mIndices.push_back(vtop+(gy*(grid_size+1))+gx+idxs[i]);
+ mTriStrip.clear();
+ S32 idxs[] = {0,1,(grid_size+1)+1,(grid_size+1)+1,(grid_size+1),0};
+ for(S32 gx = 0;gx<grid_size;gx++)
+ {
+
+ for(S32 gy = 0;gy<grid_size;gy++)
+ {
+ if (mTypeMask & TOP_MASK)
+ {
+ for(S32 i=5;i>=0;i--)
+ {
+ mIndices.push_back(vtop+(gy*(grid_size+1))+gx+idxs[i]);
+ }
+
+ if (gy == 0)
+ {
+ mTriStrip.push_back((gx+1)*(grid_size+1));
+ mTriStrip.push_back((gx+1)*(grid_size+1));
+ mTriStrip.push_back(gx*(grid_size+1));
+ }
+
+ mTriStrip.push_back(gy+1+(gx+1)*(grid_size+1));
+ mTriStrip.push_back(gy+1+gx*(grid_size+1));
+
+
+ if (gy == grid_size-1)
+ {
+ mTriStrip.push_back(gy+1+gx*(grid_size+1));
+ }
+ }
+ else
+ {
+ for(S32 i=0;i<6;i++)
+ {
+ mIndices.push_back(vtop+(gy*(grid_size+1))+gx+idxs[i]);
+ }
+
+ if (gy == 0)
+ {
+ mTriStrip.push_back(gx*(grid_size+1));
+ mTriStrip.push_back(gx*(grid_size+1));
+ mTriStrip.push_back((gx+1)*(grid_size+1));
+ }
+
+ mTriStrip.push_back(gy+1+gx*(grid_size+1));
+ mTriStrip.push_back(gy+1+(gx+1)*(grid_size+1));
+
+ if (gy == grid_size-1)
+ {
+ mTriStrip.push_back(gy+1+(gx+1)*(grid_size+1));
+ }
}
}
+
+ }
+
+ if (mTriStrip.size()%2 == 1)
+ {
+ mTriStrip.push_back(mTriStrip[mTriStrip.size()-1]);
}
}
@@ -4771,6 +4821,8 @@ BOOL LLVolumeFace::createCap(LLVolume* volume, BOOL partial_build)
pt2--;
}
}
+
+ makeTriStrip();
}
else
{
@@ -4875,67 +4927,108 @@ BOOL LLVolumeFace::createCap(LLVolume* volume, BOOL partial_build)
pt2--;
}
}
+
+ makeTriStrip();
}
}
else
{
// Not hollow, generate the triangle fan.
+ U16 v1 = 2;
+ U16 v2 = 1;
+
if (mTypeMask & TOP_MASK)
{
- if (mTypeMask & OPEN_MASK)
- {
- // SOLID OPEN TOP
- // Generate indices
- // This is a tri-fan, so we reuse the same first point for all triangles.
- for (S32 i = 0; i < (num_vertices - 2); i++)
- {
- mIndices[3*i] = num_vertices - 1;
- mIndices[3*i+1] = i;
- mIndices[3*i+2] = i + 1;
- }
- }
- else
- {
- // SOLID CLOSED TOP
- for (S32 i = 0; i < (num_vertices - 2); i++)
- {
- //MSMSM fix these caps but only for the un-cut case
- mIndices[3*i] = num_vertices - 1;
- mIndices[3*i+1] = i;
- mIndices[3*i+2] = i + 1;
- }
- }
+ v1 = 1;
+ v2 = 2;
+ }
+
+ for (S32 i = 0; i < (num_vertices - 2); i++)
+ {
+ mIndices[3*i] = num_vertices - 1;
+ mIndices[3*i+v1] = i;
+ mIndices[3*i+v2] = i + 1;
+ }
+
+ //make tri strip
+ if (mTypeMask & OPEN_MASK)
+ {
+ makeTriStrip();
}
else
{
- if (mTypeMask & OPEN_MASK)
+ S32 j = num_vertices-2;
+ if (mTypeMask & TOP_MASK)
{
- // SOLID OPEN BOTTOM
- // Generate indices
- // This is a tri-fan, so we reuse the same first point for all triangles.
- for (S32 i = 0; i < (num_vertices - 2); i++)
+ mTriStrip.push_back(0);
+ for (S32 i = 0; i <= j; ++i)
{
- mIndices[3*i] = num_vertices - 1;
- mIndices[3*i+1] = i + 1;
- mIndices[3*i+2] = i;
+ mTriStrip.push_back(i);
+ if (i != j)
+ {
+ mTriStrip.push_back(j);
+ }
+ --j;
}
}
else
{
- // SOLID CLOSED BOTTOM
- for (S32 i = 0; i < (num_vertices - 2); i++)
+ mTriStrip.push_back(j);
+ for (S32 i = 0; i <= j; ++i)
{
- //MSMSM fix these caps but only for the un-cut case
- mIndices[3*i] = num_vertices - 1;
- mIndices[3*i+1] = i + 1;
- mIndices[3*i+2] = i;
+ if (i != j)
+ {
+ mTriStrip.push_back(j);
+ }
+ mTriStrip.push_back(i);
+ --j;
}
}
+
+ mTriStrip.push_back(mTriStrip[mTriStrip.size()-1]);
+
+ if (mTriStrip.size()%2 == 1)
+ {
+ mTriStrip.push_back(mTriStrip[mTriStrip.size()-1]);
+ }
}
}
+
return TRUE;
}
+void LLVolumeFace::makeTriStrip()
+{
+ for (U32 i = 0; i < mIndices.size(); i+=3)
+ {
+ U16 i0 = mIndices[i];
+ U16 i1 = mIndices[i+1];
+ U16 i2 = mIndices[i+2];
+
+ if ((i/3)%2 == 1)
+ {
+ mTriStrip.push_back(i0);
+ mTriStrip.push_back(i0);
+ mTriStrip.push_back(i1);
+ mTriStrip.push_back(i2);
+ mTriStrip.push_back(i2);
+ }
+ else
+ {
+ mTriStrip.push_back(i2);
+ mTriStrip.push_back(i2);
+ mTriStrip.push_back(i1);
+ mTriStrip.push_back(i0);
+ mTriStrip.push_back(i0);
+ }
+ }
+
+ if (mTriStrip.size()%2 == 1)
+ {
+ mTriStrip.push_back(mTriStrip[mTriStrip.size()-1]);
+ }
+}
+
void LLVolumeFace::createBinormals()
{
LLMemType m1(LLMemType::MTYPE_VOLUME);
@@ -5136,9 +5229,14 @@ BOOL LLVolumeFace::createSide(LLVolume* volume, BOOL partial_build)
if (!partial_build)
{
+ mTriStrip.clear();
+
// Now we generate the indices.
for (t = 0; t < (mNumT-1); t++)
{
+ //prepend terminating index to strip
+ mTriStrip.push_back(mNumS*t);
+
for (s = 0; s < (mNumS-1); s++)
{
mIndices[cur_index++] = s + mNumS*t; //bottom left
@@ -5148,6 +5246,14 @@ BOOL LLVolumeFace::createSide(LLVolume* volume, BOOL partial_build)
mIndices[cur_index++] = s+1 + mNumS*t; //bottom right
mIndices[cur_index++] = s+1 + mNumS*(t+1); //top right
+ if (s == 0)
+ {
+ mTriStrip.push_back(s+mNumS*t);
+ mTriStrip.push_back(s+mNumS*(t+1));
+ }
+ mTriStrip.push_back(s+1+mNumS*t);
+ mTriStrip.push_back(s+1+mNumS*(t+1));
+
mEdge[cur_edge++] = (mNumS-1)*2*t+s*2+1; //bottom left/top right neighbor face
if (t < mNumT-2) { //top right/top left neighbor face
mEdge[cur_edge++] = (mNumS-1)*2*(t+1)+s*2+1;
@@ -5188,6 +5294,13 @@ BOOL LLVolumeFace::createSide(LLVolume* volume, BOOL partial_build)
}
mEdge[cur_edge++] = (mNumS-1)*2*t+s*2; //top right/bottom left neighbor face
}
+ //append terminating vertex to strip
+ mTriStrip.push_back(mNumS-1+mNumS*(t+1));
+ }
+
+ if (mTriStrip.size()%2 == 1)
+ {
+ mTriStrip.push_back(mTriStrip[mTriStrip.size()-1]);
}
}
diff --git a/indra/llmath/llvolume.h b/indra/llmath/llvolume.h
index 871b334452..d9f80f0e30 100644
--- a/indra/llmath/llvolume.h
+++ b/indra/llmath/llvolume.h
@@ -798,7 +798,8 @@ public:
BOOL create(LLVolume* volume, BOOL partial_build = FALSE);
void createBinormals();
-
+ void makeTriStrip();
+
class VertexData
{
public:
@@ -839,6 +840,7 @@ public:
std::vector<VertexData> mVertices;
std::vector<U16> mIndices;
+ std::vector<U16> mTriStrip;
std::vector<S32> mEdge;
private:
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-04 03:56:05 +0000