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Give each AS build its own scratch space in demo

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baldurk
2025-07-09 13:09:17 +01:00
parent 6c5b6177dc
commit 62c2747169
1 changed files with 2 additions and 1 deletions
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util/test/demos/vk/vk_descriptor_buffer.cpp
+2 -1
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@@ -1103,7 +1103,7 @@ void main()
AllocatedBuffer tlasScratchBuffer(
this,
vkh::BufferCreateInfo(
tlasBuildSizesInfo.buildScratchSize,
tlasBuildSizesInfo.buildScratchSize * 2 + 0x1000,
VK_BUFFER_USAGE_STORAGE_BUFFER_BIT | VK_BUFFER_USAGE_SHADER_DEVICE_ADDRESS_BIT_KHR),
VmaAllocationCreateInfo({0, VMA_MEMORY_USAGE_GPU_ONLY}));
@@ -1117,6 +1117,7 @@ void main()
CHECK_VKR(vkBeginCommandBuffer(cmd, vkh::CommandBufferBeginInfo()));
vkCmdBuildAccelerationStructuresKHR(cmd, 1, &tlasBuildGeometryInfo, &asBuildRangeInfos);
tlasBuildGeometryInfo.dstAccelerationStructure = t_as_60;
tlasBuildGeometryInfo.scratchData.deviceAddress = tlasScratchBuffer.address + 0x1000;
vkCmdBuildAccelerationStructuresKHR(cmd, 1, &tlasBuildGeometryInfo, &asBuildRangeInfos);
CHECK_VKR(vkEndCommandBuffer(cmd));
Submit(99, 99, {cmd});