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Don't cull animated objects in rooms where many exist

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Calculating whether or not to cull many objects can be more expensive
than rendering them
This commit is contained in:
Matt Penny 2024-03-20 21:14:11 -04:00
parent 2b09deb1fe
commit 1318e8ec4b
1 changed files with 13 additions and 5 deletions
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18
src/levels/static_render.c
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@ -47,6 +47,8 @@ void staticRenderTraverseIndex(
} }
} }
#define ANIMATED_CULL_THRESHOLD 50
void staticRenderPopulateRooms(struct FrustrumCullingInformation* cullingInfo, Mtx* staticMatrices, struct Transform* staticTransforms, struct RenderScene* renderScene) { void staticRenderPopulateRooms(struct FrustrumCullingInformation* cullingInfo, Mtx* staticMatrices, struct Transform* staticTransforms, struct RenderScene* renderScene) {
int currentRoom = 0; int currentRoom = 0;
@ -60,17 +62,23 @@ void staticRenderPopulateRooms(struct FrustrumCullingInformation* cullingInfo, M
struct BoundingBoxs16* animatedBox = roomIndex->animatedBoxes; struct BoundingBoxs16* animatedBox = roomIndex->animatedBoxes;
// For rooms with with many animated elements, calculating whether
// or not to cull them is more expensive than just rendering them
short animatedElementCount = roomIndex->animatedRange.max - roomIndex->animatedRange.min;
u8 shouldCull = animatedElementCount < ANIMATED_CULL_THRESHOLD;
for (int i = roomIndex->animatedRange.min; i < roomIndex->animatedRange.max; ++i, ++animatedBox) { for (int i = roomIndex->animatedRange.min; i < roomIndex->animatedRange.max; ++i, ++animatedBox) {
struct StaticContentElement* staticElement = &gCurrentLevel->staticContent[i]; struct StaticContentElement* staticElement = &gCurrentLevel->staticContent[i];
struct RotatedBox rotatedBox;
struct Transform* transform = &staticTransforms[staticElement->transformIndex]; struct Transform* transform = &staticTransforms[staticElement->transformIndex];
rotatedBoxTransform(transform, animatedBox, &rotatedBox); if (shouldCull) {
struct RotatedBox rotatedBox;
rotatedBoxTransform(transform, animatedBox, &rotatedBox);
if (isRotatedBoxOutsideFrustrum(cullingInfo, &rotatedBox)) { if (isRotatedBoxOutsideFrustrum(cullingInfo, &rotatedBox)) {
continue; continue;
}
} }
struct Vector3 center; struct Vector3 center;