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Code Issues 121 Wiki Activity

Fix anim true behavior

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Hirek
2026-05-10 13:27:57 +02:00
parent 3419666070
commit 2677ef547b
1 changed files with 15 additions and 5 deletions
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20
model/AnimModel.cpp
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@@ -406,15 +406,19 @@ namespace {
// relative billboards also operate purely on the local matrix using whatever
// modelview the caller pushed, which is exactly per-instance behaviour.
// The runtime SetRotate/SetTranslate animations (at_Rotate / at_RotateXYZ /
// at_Translate) are tied to per-instance iAnimOwner and are unsafe to share —
// in practice they're driven by m_animlist which we filter at the AnimModel
// level, but we still blacklist them here as a safety net.
// at_Translate) are tied to per-instance iAnimOwner and are unsafe to share.
// at_Undefined is the type assigned to .t3d submodels declared with `anim: true`
// (a generic "this submodel is animatable" hint) and to anything else that
// doesn't match a recognised animation keyword — these are driven by event-
// triggered SetRotate/SetTranslate at runtime, which would silently break if
// the model were batched.
bool anim_type_unsafe_for_instancing( TAnimType a ) {
switch( a ) {
case TAnimType::at_Rotate:
case TAnimType::at_RotateXYZ:
case TAnimType::at_Translate:
case TAnimType::at_DigiClk: // mutates child submodels via SetRotate
case TAnimType::at_DigiClk: // mutates child submodels via SetRotate
case TAnimType::at_Undefined: // `anim: true` / unknown — driven by events
return true;
default:
return false;
@@ -422,10 +426,16 @@ bool anim_type_unsafe_for_instancing( TAnimType a ) {
}
// recursively walks a submodel tree and returns true if any submodel declares
// an animation type that's unsafe to batch.
// an animation type that's unsafe to batch, OR carries the runtime "needs
// animation matrix" flag (iFlags bit 0x4000), which is set whenever the
// submodel was tagged as animatable in the .t3d file or had WillBeAnimated()
// called on it during model load. Either signal means the submodel may receive
// per-instance event-driven animation commands at runtime, which the GPU-
// instanced path (one shared submodel tree across all instances) cannot serve.
bool submodel_tree_blocks_instancing( TSubModel const *Sub ) {
if( Sub == nullptr ) { return false; }
if( anim_type_unsafe_for_instancing( Sub->b_Anim ) ) { return true; }
if( ( Sub->iFlags & 0x4000 ) != 0 ) { return true; }
if( submodel_tree_blocks_instancing( Sub->Child ) ) { return true; }
if( submodel_tree_blocks_instancing( Sub->Next ) ) { return true; }
return false;