mirrors/0ad
1
0
Fork 2
mirror of https://gitea.wildfiregames.com/0ad/0ad.git synced 2026-10-14 07:17:44 +00:00
Code Issues Packages Projects Releases Wiki Activity

Fix culling for shadows and reflections.

Browse Source 
Previously we had a single culling frustum based on the main camera, and
any object outside the frustum would never get rendered, even if it
should actually contribute to shadows or reflections/refractions. This
caused ugly pop-in effects in the shadows and reflections while
scrolling.

Extend the renderer to support multiple cull groups, each with a
separate frustum and with separate lists of submitted objects, so that
shadows and reflections will render the correctly culled sets of
objects.

Update the shadow map generation to compute the (hopefully) correct
bounds and matrices for this new scheme.

Include terrain patches in the shadow bounds, so hills can cast shadows
correctly.

Remove the code that tried to render objects slightly outside the camera
frustum in order to reduce the pop-in effect, since that was a
workaround for the lack of a proper fix.

Remove the model/patch filtering code, which was used to cull objects
that were in the normal camera frustum but should be excluded from
reflections/refractions, since that's redundant now too.

Inline DistanceToPlane to save a few hundred usecs per frame inside
CCmpUnitRenderer::RenderSubmit.

Fixes #504, #579.

This was SVN commit r15445.
This commit is contained in:
Ykkrosh
2014-06-25 01:11:10 +00:00
parent bb4b911e99
commit b1b96a89d6
31 changed files with 720 additions and 509 deletions
Download Patch File Download Diff File Expand all files Collapse all files
source/simulation2/components/CCmpUnitRenderer.cpp
+24 -7
View File
@@ -68,6 +68,13 @@ public:
int flags;
/**
* m_FrameNumber from when the model's transform was last updated.
* This is used to avoid recomputing it multiple times per frame
* if a model is visible in multiple cull groups.
*/
int lastTransformFrame;
/**
* Worst-case bounding shape, relative to position. Needs to account
* for all possible animations, orientations, etc.
@@ -107,6 +114,7 @@ public:
std::vector<SUnit> m_Units;
std::vector<tag_t> m_UnitTagsFree;
int m_FrameNumber;
float m_FrameOffset;
bool m_EnableDebugOverlays;
@@ -128,6 +136,7 @@ public:
virtual void Init(const CParamNode& UNUSED(paramNode))
{
m_FrameNumber = 0;
m_FrameOffset = 0.0f;
m_EnableDebugOverlays = false;
}
@@ -195,6 +204,7 @@ public:
SUnit* unit = LookupUnit(tag);
unit->entity = entity;
unit->actor = actor;
unit->lastTransformFrame = -1;
unit->flags = flags;
unit->boundsApprox = boundsApprox;
unit->inWorld = false;
@@ -277,6 +287,7 @@ void CCmpUnitRenderer::Interpolate(float frameTime, float frameOffset)
{
PROFILE3("UnitRenderer::Interpolate");
++m_FrameNumber;
m_FrameOffset = frameOffset;
// TODO: we shouldn't update all the animations etc for units that are off-screen
@@ -346,14 +357,20 @@ void CCmpUnitRenderer::RenderSubmit(SceneCollector& collector, const CFrustum& f
unit.culled = false;
CmpPtr<ICmpPosition> cmpPosition(unit.entity);
if (!cmpPosition)
continue;
CMatrix3D transform(cmpPosition->GetInterpolatedTransform(m_FrameOffset));
CModelAbstract& unitModel = unit.actor->GetModel();
unitModel.SetTransform(transform);
if (unit.lastTransformFrame != m_FrameNumber)
{
CmpPtr<ICmpPosition> cmpPosition(unit.entity);
if (!cmpPosition)
continue;
CMatrix3D transform(cmpPosition->GetInterpolatedTransform(m_FrameOffset));
unitModel.SetTransform(transform);
unit.lastTransformFrame = m_FrameNumber;
}
if (culling && !frustum.IsBoxVisible(CVector3D(0, 0, 0), unitModel.GetWorldBoundsRec()))
continue;