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Fix query count and dateaSize/stride calculation

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Fixes #874
This commit is contained in:
Sascha Willems 2023-08-04 20:04:15 +02:00
parent fc27e4d98d
commit 99f25527cc
1 changed files with 10 additions and 6 deletions
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16
examples/pipelinestatistics/pipelinestatistics.cpp
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@ -1,7 +1,7 @@
/*
* Vulkan Example - Retrieving pipeline statistics
*
* Copyright (C) 2017 by Sascha Willems - www.saschawillems.de
* Copyright (C) 2017-2023 by Sascha Willems - www.saschawillems.de
*
* This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
*/
@ -122,22 +122,26 @@ public:
VK_QUERY_PIPELINE_STATISTIC_TESSELLATION_CONTROL_SHADER_PATCHES_BIT |
VK_QUERY_PIPELINE_STATISTIC_TESSELLATION_EVALUATION_SHADER_INVOCATIONS_BIT;
}
queryPoolInfo.queryCount = deviceFeatures.tessellationShader ? 8 : 6;
queryPoolInfo.queryCount = 1;
VK_CHECK_RESULT(vkCreateQueryPool(device, &queryPoolInfo, NULL, &queryPool));
}
// Retrieves the results of the pipeline statistics query submitted to the command buffer
void getQueryResults()
{
uint32_t count = static_cast<uint32_t>(pipelineStats.size());
// The size of the data we want to fetch ist based on the count of statistics values
uint32_t dataSize = static_cast<uint32_t>(pipelineStats.size()) * sizeof(uint64_t);
// The stride between queries is the no. of unique value entries
uint32_t stride = static_cast<uint32_t>(pipelineStatNames.size()) * sizeof(uint64_t);
// Note: for one query both values have the same size, but to make it easier to expand this sample these are properly calculated
vkGetQueryPoolResults(
device,
queryPool,
0,
1,
count * sizeof(uint64_t),
dataSize,
pipelineStats.data(),
sizeof(uint64_t),
stride,
VK_QUERY_RESULT_64_BIT);
}
@ -164,7 +168,7 @@ public:
VK_CHECK_RESULT(vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo));
// Reset timestamp query pool
vkCmdResetQueryPool(drawCmdBuffers[i], queryPool, 0, static_cast<uint32_t>(pipelineStats.size()));
vkCmdResetQueryPool(drawCmdBuffers[i], queryPool, 0, 1);
vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);