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[Feat] (DirectVulkan, MG_Impl): occlusion queries via Vulkan query pools

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GL_SAMPLES_PASSED / GL_ANY_SAMPLES_PASSED(_CONSERVATIVE) now work: every
app draw between Begin/EndQuery is wrapped in a slot of a host-reset
occlusion query pool (precise counts when occlusionQueryPrecise is
granted), and the result flush ends any active render pass before
submitting, waits, sums the slots and recycles them. ANY_* targets
report the boolean form; GL_QUERY_COUNTER_BITS and GL_CURRENT_QUERY
answer for the occlusion targets, and deleting an active query releases
its slot. Draw-time depth/stencil state also honors attachment absence:
a framebuffer without a depth (stencil) attachment behaves as if that
test always passes, even when a packed depth-stencil image is attached
through only one half (verify_partial_attachments.*).
This commit is contained in:
BZLZHH
2026-08-01 01:50:34 -04:00
parent 22b749dd37
commit 107b56d603
7 changed files with 285 additions and 12 deletions
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MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.h
+21
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@@ -296,6 +296,15 @@ namespace MobileGL::MG_Backend::DirectVulkan {
const VkTimerQueryManager::TimestampRecord& end) const;
Uint64 GetTimerQueryTimestampNs(const VkTimerQueryManager::TimestampRecord& record) const;
// GL_SAMPLES_PASSED occlusion queries: every app draw between Start and Stop is
// wrapped in a Vulkan occlusion query slot; the result is the slot sum. Requires
// hostQueryReset for slot recycling - Start fails (frontend keeps the query
// unsupported) when the device lacks it.
Bool StartOcclusionQueryCapture();
void StopOcclusionQueryCapture(Vector<Uint32>& outSlots);
// Flushes pending commands, waits, sums the slots, and recycles them.
Bool ResolveOcclusionQueryResult(const Vector<Uint32>& slots, Uint64& outSamples);
void RequestSwapchainResize(Uint32 width, Uint32 height);
// Re-query the surface and report whether the live swapchain no longer matches it
// (size or orientation). This - not a VK_SUBOPTIMAL_KHR result - is what decides a
@@ -482,6 +491,18 @@ namespace MobileGL::MG_Backend::DirectVulkan {
// when GL transform feedback is active; binds capture buffers on demand.
Bool BeginXfbCaptureForDraw(FrameContext::FrameData& frame);
void EndXfbCaptureForDraw(FrameContext::FrameData& frame, Bool began);
// Wrap one app draw in an occlusion-query slot while a GL_SAMPLES_PASSED
// query is active. Returns whether a slot was begun (End must mirror it).
Bool BeginOcclusionForDraw(VkCommandBuffer commandBuffer);
void EndOcclusionForDraw(VkCommandBuffer commandBuffer, Bool began);
Bool m_occlusionQueryPreciseEnabled = false;
Bool m_hostQueryResetEnabled = false;
PFN_vkResetQueryPool s_vkResetQueryPool = nullptr;
VkQueryPool m_occlusionQueryPool = VK_NULL_HANDLE;
static constexpr Uint32 kOcclusionQuerySlots = 8192;
Uint32 m_occlusionSlotCursor = 0;
Bool m_occlusionCaptureActive = false;
Vector<Uint32> m_occlusionActiveSlots;
VkCommandPool m_commandPool = VK_NULL_HANDLE;