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Fix animated M2 flicker: free bone descriptor sets on instance removal

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The boneDescPool_ had MAX_BONE_SETS=2048 but sets were never freed when
instances were removed (only when clear() reset the whole pool on map load).
As tiles streamed in/out, each new animated instance consumed 2 pool slots
(one per frame index) permanently. After ~1024 animated instances created
total, vkAllocateDescriptorSets began failing silently and returning
VK_NULL_HANDLE. render() skips instances with null boneSet[frameIndex],
making them invisible — appearing as per-frame flicker as the culling pass
included them but the render pass excluded them.

Fix: destroyInstanceBones() now calls vkFreeDescriptorSets() for each
non-null boneSet before destroying the bone SSBO. The pool already had
VK_DESCRIPTOR_POOL_CREATE_FREE_DESCRIPTOR_SET_BIT set for this purpose.
Also increased MAX_BONE_SETS from 2048 to 8192 for extra headroom.
This commit is contained in:
Kelsi 2026-03-09 18:09:33 -07:00
parent 7b3b33e664
commit caea24f6ea
2 changed files with 10 additions and 2 deletions
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2
include/rendering/m2_renderer.hpp
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@ -381,7 +381,7 @@ private:
VkDescriptorPool materialDescPool_ = VK_NULL_HANDLE;
VkDescriptorPool boneDescPool_ = VK_NULL_HANDLE;
static constexpr uint32_t MAX_MATERIAL_SETS = 8192;
static constexpr uint32_t MAX_BONE_SETS = 2048;
static constexpr uint32_t MAX_BONE_SETS = 8192;
// Dynamic particle buffers
::VkBuffer smokeVB_ = VK_NULL_HANDLE;