July 10, 2019 
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Anywhere.)[19:03:29] <[exa]> Q: what's the best way to do atomicAdd on floats in spir-v?[19:07:36] *** ratchetfreak <ratchetfreak!~ratchetfr@ptr-82s3g7muz0p3o58sc34.18120a2.ip6.access.telenet.be> has joined ##vulkan[19:08:22] *** ratchet_freak <ratchet_freak!~ratchetfr@ptr-82s3g7l9r42569r41f4.18120a2.ip6.access.telenet.be> has joined ##vulkan[19:12:52] *** ratchetfreak <ratchetfreak!~ratchetfr@ptr-82s3g7muz0p3o58sc34.18120a2.ip6.access.telenet.be> has quit IRC (Ping timeout: 276 seconds)[19:17:40] *** salamanderrake <salamanderrake!~quassel@2605:a000:122a:10e:f086:4f7e:ff9f:928e> has joined ##vulkan[19:37:58] *** LunarJetman <LunarJetman!LunarJetma@94.14.216.120> has joined ##vulkan[19:49:00] *** emersont1 <emersont1!~emersont1@2a00:23c5:2e3b:dc00:591a:20c6:b6f6:a4a9> has joined ##vulkan[20:45:11] *** emersont1 <emersont1!~emersont1@2a00:23c5:2e3b:dc00:591a:20c6:b6f6:a4a9> has quit IRC (Remote host closed the connection)[20:48:51] *** emersont1 <emersont1!~emersont1@2a00:23c5:2e3b:dc00:591a:20c6:b6f6:a4a9> has joined ##vulkan[20:57:10] *** emersont1 <emersont1!~emersont1@2a00:23c5:2e3b:dc00:591a:20c6:b6f6:a4a9> has quit IRC (Remote host closed the connection)[20:59:09] *** emersont1 <emersont1!~emersont1@2a00:23c5:2e3b:dc00:591a:20c6:b6f6:a4a9> has joined ##vulkan[21:02:50] *** ipee <ipee!~ipe@91-156-247-55.elisa-laajakaista.fi> has joined ##vulkan[21:04:55] *** ipe <ipe!~ipe@91-156-247-55.elisa-laajakaista.fi> has quit IRC (Ping timeout: 246 seconds)[22:00:59] *** ImQ009 <ImQ009!~ImQ009@unaffiliated/imq009> has quit IRC (Quit: Leaving)[22:15:11] *** slime <slime!~slime73@24.215.81.93> has joined ##vulkan[22:38:22] *** plasticle <plasticle!~plasticle@cpe-107-15-166-189.nc.res.rr.com> has quit IRC (Ping timeout: 245 seconds)[22:40:53] *** plasticle <plasticle!~plasticle@cpe-107-15-166-189.nc.res.rr.com> has joined ##vulkan[22:45:52] *** Deluxe <Deluxe!~Deluxe@212.4.150.151> has quit IRC (Read error: Connection reset by peer)[22:55:45] *** ipee <ipee!~ipe@91-156-247-55.elisa-laajakaista.fi> has quit IRC (Read error: Connection reset by peer)[23:01:55] *** plasticle <plasticle!~plasticle@cpe-107-15-166-189.nc.res.rr.com> has quit IRC (Ping timeout: 244 seconds)[23:16:19] *** plasticle <plasticle!~plasticle@cpe-107-15-166-189.nc.res.rr.com> has joined ##vulkan[23:22:10] *** pa <pa!~pa@unaffiliated/pa> has quit IRC (Ping timeout: 268 seconds)[23:24:42] *** pa <pa!~pa@unaffiliated/pa> has joined ##vulkan[23:40:05] *** felipealmeida <felipealmeida!~user@2804:14d:badc:2b50::1000> has joined ##vulkan[23:41:15] <felipealmeida> hi, can i reuse a commandbuffer to which I already freed its descriptorset?[23:44:55] <baldurk> no[23:47:34] <felipealmeida> I'm lost then, how do I draw several images in the screen as efficient as possible?[23:48:03] <felipealmeida> I was going to create one commandbuffer per image, but that is going to hit the descriptorset limit[23:49:46] <baldurk> I don't know which limit you're talking about, but one solution would be to double-buffer your descriptor sets so that while one frame is rendering on the GPU you're recording to the other on the CPU, and flip them around each frame[23:50:06] <baldurk> how exactly you set it up depends on how many descriptor sets you have, how many command buffers you record per frame, etc[23:50:32] <felipealmeida> I've tried allocating 100 descriptors[23:50:42] <felipealmeida> it said it hits the 32 descriptor limit[23:50:53] <felipealmeida> which doesn't seem like very much[23:51:02] <baldurk> you'll need to be more specific, what's the exact message[23:51:18] <felipealmeida> let me reproduce[23:51:32] <baldurk> when you create a descriptor pool you specify how many descriptor sets you'll allocate, and how many of each time of descriptor. You need to make enough room in your descriptor pool or have multiple pools[23:55:42] <felipealmeida> baldurk: so I should be able to have a thousand descriptorSets allocated?[23:56:02] <felipealmeida> I think I was having a problem with DescriptorSetLayout[23:56:11] <felipealmeida> not the set itself[23:56:29] <baldurk> I believe the only limits are on how many descriptors you can bind at once, not how many sets you can have allocated[23:56:54] <felipealmeida> VUID-VkPipelineLayoutCreateInfo-setLayoutCount-00286(ERROR / SPEC): msgNum: 0 - vkCreatePipelineLayout(): setLayoutCount (100) exceeds physical device maxBoundDescriptorSets limit (32). The Vulkan spec states: setLayoutCount must be less than or equal to VkPhysicalDeviceLimits::maxBoundDescriptorSets (https://www.khronos.org/registry/vulkan/specs/1.1-extensions/html/vkspec.html#VUID-VkPipelineLayoutCreateInfo-setLayoutCount-00286)[23:57:50] <baldurk> yes you can't create a pipeline layout that binds more descriptor sets than the given limit, that has nothing to do with how many you can allocate[23:58:19] <felipealmeida> so, the problem is trying to use a single commandbuffer for so many descriptors right?[23:58:41] <felipealmeida> if I create a commandbuffer for each image, then I should be alright?[23:58:47] <baldurk> no that message says that you can't create a single pipeline layout that references 100 descriptor sets[23:59:08] <baldurk> there's no correlation between the number of bound descriptor sets and how many command buffers you have, or how many images you're using[23:59:24] <baldurk> I think you need to go back and read up on these concepts to understand them as it seems like you don't have a good handle on how they fit together[23:59:56] <felipealmeida> well, I was referencing the descriptorset by using vkCmdBindDescriptorSets, but then it was complaining the index should match in the pSetsLayout