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vk: Workaround for NVIDIA occlusion query failure

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- When using partial results on NVIDIA, a non-zero result is returned even when the draw is fully occluded.
  This, I believe, violates spec which says the partial result shall be between 0 and the final result.
This commit is contained in:
kd-11 2020-01-08 17:43:59 +03:00 committed by kd-11
parent f5cb147f8d
commit ef3b0db7d8
1 changed files with 12 additions and 4 deletions
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16
rpcs3/Emu/RSX/VK/VKHelpers.h
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@ -3004,14 +3004,14 @@ public:
std::deque<u32> available_slots;
std::vector<query_slot_info> query_slot_status;
inline bool poke_query(query_slot_info& query, u32 index)
inline bool poke_query(query_slot_info& query, u32 index, VkQueryResultFlags flags)
{
// Query is ready if:
// 1. Any sample has been determined to have passed the Z test
// 2. The backend has fully processed the query and found no hits
u32 result[2] = { 0, 0 };
switch (const auto error = vkGetQueryPoolResults(*owner, query_pool, index, 1, 8, result, 8, VK_QUERY_RESULT_PARTIAL_BIT | VK_QUERY_RESULT_WITH_AVAILABILITY_BIT))
switch (const auto error = vkGetQueryPoolResults(*owner, query_pool, index, 1, 8, result, 8, flags | VK_QUERY_RESULT_WITH_AVAILABILITY_BIT))
{
case VK_SUCCESS:
{
@ -3108,7 +3108,11 @@ public:
bool check_query_status(u32 index)
{
return poke_query(query_slot_status[index], index);
// NOTE: Keeps NVIDIA driver from using partial results as they are broken (always returns true)
const VkQueryResultFlags flags =
(vk::get_driver_vendor() == vk::driver_vendor::NVIDIA ? 0 : VK_QUERY_RESULT_PARTIAL_BIT);
return poke_query(query_slot_status[index], index, flags);
}
u32 get_query_result(u32 index)
@ -3116,9 +3120,13 @@ public:
// Check for cached result
auto& query_info = query_slot_status[index];
// Wait for full result on NVIDIA to avoid getting garbage results
const VkQueryResultFlags flags =
(vk::get_driver_vendor() == vk::driver_vendor::NVIDIA ? VK_QUERY_RESULT_WAIT_BIT : VK_QUERY_RESULT_PARTIAL_BIT);
while (!query_info.ready)
{
poke_query(query_info, index);
poke_query(query_info, index, flags);
}
return query_info.any_passed ? 1 : 0;