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minor pointers changes

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This commit is contained in:
UbitUmarov
2022-03-26 03:51:42 +00:00
parent e6001fb703
commit 30b7bb7d45
1 changed files with 26 additions and 15 deletions
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41
OpenSim/Framework/TerrainData.cs
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@@ -267,21 +267,27 @@ namespace OpenSim.Framework
zmin = float.MaxValue;
int stride = m_heightmap.GetLength(1);
int mstride = 16 * stride;
int startx = px * 16 * stride;
int endx = (px + 1) * 16 * stride;
int starty = py * 16;
int mpy = 16 * py;
fixed (float* map = m_heightmap)
{
for (int i = startx; i < endx; i += stride)
float* p = map + px * mstride;
float* pend = p + mstride;
while (p < pend)
{
float* p = &map[i];
for (int j = starty; j < starty + 16; j++)
float* yt = p + mpy;
float* ytend = yt + 16;
while(yt < ytend)
{
float val = p[j];
if (val > zmax) zmax = val;
if (val < zmin) zmin = val;
float val = *yt;
if (val > zmax)
zmax = val;
else if (val < zmin)
zmin = val;
yt++;
}
p += stride;
}
}
}
@@ -290,18 +296,23 @@ namespace OpenSim.Framework
{
int k = 0;
int stride = m_heightmap.GetLength(1);
int mstride = 16 * stride;
int startX = px * 16 * stride;
int endX = (px + 1) * 16 * stride;
int startY = py * 16;
fixed(float* map = m_heightmap)
int startX = px * mstride;
int endX = startX + mstride;
int mpy = 16 * py;
fixed (float* map = m_heightmap)
{
for (int y = startY; y < startY + 16; y++)
float* yp = map + mpy;
float* yend = yp + 16;
while (yp < yend)
{
for (int x = startX; x < endX; x += stride)
{
block[k++] = (map[x + y] - sub) * premult;
block[k++] = (yp[x] - sub) * premult;
}
++yp;
}
}
}