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vulkaninfo: Call enumerate functions with scratch buffer #1050

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Nov 21, 2024
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vulkaninfo: Call enumerate functions with scratch buffer #1050

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9 changes: 4 additions & 5 deletions vulkaninfo/vulkaninfo.h
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Original file line number Diff line number Diff line change
Expand Up @@ -232,15 +232,14 @@ static VKAPI_ATTR VkBool32 VKAPI_CALL DbgCallback(VkDebugReportFlagsEXT msgFlags
// Helper for robustly executing the two-call pattern
template <typename T, typename F, typename... Ts>
auto GetVectorInit(const char *func_name, F &&f, T init, Ts &&...ts) -> std::vector<T> {
uint32_t count = 0;
uint32_t count = 32; // Preallocate enough so that most calls only happen once
std::vector<T> results;
VkResult err;
uint32_t iteration_count = 0;
uint32_t max_iterations = 3;
uint32_t max_iterations = 5;
do {
err = f(ts..., &count, nullptr);
if (err) THROW_VK_ERR(func_name, err);
results.resize(count, init);
count *= 2;
results.resize(count);
err = f(ts..., &count, results.data());
results.resize(count);
iteration_count++;
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