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vk: Restructure how the conditional render evaluation is done (#12071) 

Fixes conditional render fast-path
This commit is contained in:
kd-11 2022-05-24 11:11:21 +03:00 committed by GitHub
parent 608f823516
commit efff2a78c8
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 43 additions and 36 deletions
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47
rpcs3/Emu/RSX/VK/VKGSRender.cpp
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@ -2728,6 +2728,18 @@ void VKGSRender::begin_conditional_rendering(const std::vector<rsx::reports::occ
VkPipelineStageFlags dst_stage;
VkAccessFlags dst_access;
u32 dst_offset = 0;
u32 num_hw_queries = 0;
usz first = 0;
usz last = (!partial_eval) ? sources.size() : 1;
// Count number of queries available. This is an "opening" evaluation, if there is only one source, read it as-is.
// The idea is to avoid scheduling a compute task unless we have to.
for (usz i = first; i < last; ++i)
{
auto& query_info = m_occlusion_map[sources[i]->driver_handle];
num_hw_queries += ::size32(query_info.indices);
}
if (m_device->get_conditional_render_support())
{
@ -2740,12 +2752,13 @@ void VKGSRender::begin_conditional_rendering(const std::vector<rsx::reports::occ
dst_access = VK_ACCESS_SHADER_READ_BIT;
}
if (sources.size() == 1)
if (num_hw_queries == 1 && !partial_eval) [[ likely ]]
{
const auto query = sources.front();
const auto& query_info = m_occlusion_map[query->driver_handle];
if (query_info.indices.size() == 1)
// Accept the first available query handle as the source of truth. No aggregation is required.
for (usz i = first; i < last; ++i)
{
auto& query_info = m_occlusion_map[sources[i]->driver_handle];
if (!query_info.indices.empty())
{
const auto& index = query_info.indices.front();
m_occlusion_query_manager->get_query_result_indirect(*m_current_command_buffer, index, m_cond_render_buffer->value, 0);
@ -2759,20 +2772,13 @@ void VKGSRender::begin_conditional_rendering(const std::vector<rsx::reports::occ
}
}
auto scratch = vk::get_scratch_buffer(*m_current_command_buffer, OCCLUSION_MAX_POOL_SIZE * 4);
u32 dst_offset = 0;
usz first = 0;
usz last;
if (!partial_eval) [[likely]]
{
last = sources.size();
// This is unreachable unless something went horribly wrong
fmt::throw_exception("Unreachable");
}
else
else if (num_hw_queries > 0)
{
last = 1;
}
// We'll need to do some result aggregation using a compute shader.
auto scratch = vk::get_scratch_buffer(*m_current_command_buffer, num_hw_queries * 4);
for (usz i = first; i < last; ++i)
{
auto& query_info = m_occlusion_map[sources[i]->driver_handle];
@ -2783,13 +2789,14 @@ void VKGSRender::begin_conditional_rendering(const std::vector<rsx::reports::occ
}
}
if (dst_offset)
// Sanity check
ensure(dst_offset <= scratch->size());
if (!partial_eval)
{
// Fast path should have been caught above
ensure(dst_offset > 4);
if (!partial_eval)
{
// Clear result to zero
vkCmdFillBuffer(*m_current_command_buffer, m_cond_render_buffer->value, 0, 4, 0);