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Compute instance matrices once

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This commit is contained in:
AnyOldName3 2023-04-30 00:41:09 +01:00
parent f2fa607f41
commit f0fcb5e5df
1 changed files with 7 additions and 8 deletions
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15
apps/openmw/mwrender/groundcover.cpp
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@ -47,9 +47,11 @@ namespace MWRender
public:
InstancedComputeNearFarCullCallback(
const std::vector<Groundcover::GroundcoverEntry>& instances, const osg::Vec3& chunkPosition)
: mInstances(instances)
, mChunkPosition(chunkPosition)
: mInstanceMatrices()
{
mInstanceMatrices.reserve(instances.size());
for (const auto& instance : instances)
mInstanceMatrices.emplace_back(computeInstanceMatrix(instance, chunkPosition));
}
bool cull(osg::NodeVisitor* nv, osg::Drawable* drawable, osg::RenderInfo* renderInfo) const override
@ -100,9 +102,8 @@ namespace MWRender
if (dNear < computedZNear)
{
dNear = std::numeric_limits<value_type>::max();
for (const auto& entry : mInstances)
for (const auto& instanceMatrix : mInstanceMatrices)
{
osg::Matrix instanceMatrix = computeInstanceMatrix(entry, mChunkPosition);
value_type newNear = cullVisitor.computeNearestPointInFrustum(
instanceMatrix * matrix, planes, *drawable);
dNear = std::min(dNear, newNear);
@ -114,9 +115,8 @@ namespace MWRender
if (cnfMode == osg::CullSettings::COMPUTE_NEAR_FAR_USING_PRIMITIVES && dFar > computedZFar)
{
dFar = -std::numeric_limits<value_type>::max();
for (const auto& entry : mInstances)
for (const auto& instanceMatrix : mInstanceMatrices)
{
osg::Matrix instanceMatrix = computeInstanceMatrix(entry, mChunkPosition);
value_type newFar = cullVisitor.computeFurthestPointInFrustum(
instanceMatrix * matrix, planes, *drawable);
dFar = std::max(dFar, newFar);
@ -131,8 +131,7 @@ namespace MWRender
}
private:
std::vector<Groundcover::GroundcoverEntry> mInstances;
osg::Vec3 mChunkPosition;
std::vector<osg::Matrix> mInstanceMatrices;
};
class InstancingVisitor : public osg::NodeVisitor