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Do not update map texture if it did not change

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bzzt 2019-02-20 13:37:00 +00:00 committed by Andrei Kortunov
parent 231e629e66
commit 1143985bc7
1 changed files with 14 additions and 5 deletions
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19
apps/openmw/mwrender/localmap.cpp
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@ -613,7 +613,8 @@ void LocalMap::updatePlayer (const osg::Vec3f& position, const osg::Quat& orient
if (!segment.mFogOfWarImage || !segment.mMapTexture)
continue;
unsigned char* data = segment.mFogOfWarImage->data();
uint32_t* data = (uint32_t*)segment.mFogOfWarImage->data();
bool changed = false;
for (int texV = 0; texV<sFogOfWarResolution; ++texV)
{
for (int texU = 0; texU<sFogOfWarResolution; ++texU)
@ -625,14 +626,22 @@ void LocalMap::updatePlayer (const osg::Vec3f& position, const osg::Quat& orient
uint8_t alpha = (clr >> 24);
alpha = std::min( alpha, (uint8_t) (std::max(0.f, std::min(1.f, (sqrDist/sqrExploreRadius)))*255) );
*(uint32_t*)data = (uint32_t) (alpha << 24);
uint32_t val = (uint32_t) (alpha << 24);
if ( *data != val)
{
*data = val;
changed = true;
}
data += 4;
++data;
}
}
segment.mHasFogState = true;
segment.mFogOfWarImage->dirty();
if (changed)
{
segment.mHasFogState = true;
segment.mFogOfWarImage->dirty();
}
}
}
}