Add interactive occlusion + WINDOW_HIDDEN throttle test to TrinityALTest#35
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Schogol wants to merge 1 commit into
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Add interactive occlusion + WINDOW_HIDDEN throttle test to TrinityALTest#35Schogol wants to merge 1 commit into
Schogol wants to merge 1 commit into
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SwapChain.OcclusionThrottleProbe presents the primary swapchain to the visible test window in a loop and logs loop-fps vs actual render-fps per window state. It detects occlusion from window geometry (IsWindowOccluded: sample 5 points on the window, skipping see-through overlays like the Alt+Tab switcher; minimized counts as hidden) and, while occluded, emulates the WINDOW_HIDDEN throttle (20ms sleep + render 1-in-50) to show rendering collapse to ~1 fps and recover when visible. Manual/interactive (needs a real GPU + visible window), run with: --interactive --gtest_filter=SwapChain.OcclusionThrottleProbe then cover / minimize / restore the window and read occlusion_throttle_test.log. Used to establish that DXGI_STATUS_OCCLUDED is unavailable for flip-model swapchains (both Present and Present(0, DXGI_PRESENT_TEST) stay S_OK while covered) and that Win32 window-geometry occlusion is a reliable substitute.
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SwapChain.OcclusionThrottleProbe presents the primary swapchain to the visible test window in a loop and logs loop-fps vs actual render-fps per window state. It detects occlusion from window geometry (IsWindowOccluded: sample 5 points on the window, skipping see-through overlays like the Alt+Tab switcher; minimized counts as hidden) and, while occluded, emulates the WINDOW_HIDDEN throttle (20ms sleep + render 1-in-50) to show rendering collapse to ~1 fps and recover when visible.
Manual/interactive (needs a real GPU + visible window), run with:
--interactive --gtest_filter=SwapChain.OcclusionThrottleProbe
then cover / minimize / restore the window and read occlusion_throttle_test.log.
Used to establish that DXGI_STATUS_OCCLUDED is unavailable for flip-model swapchains (both Present and Present(0, DXGI_PRESENT_TEST) stay S_OK while covered) and that Win32 window-geometry occlusion is a reliable substitute.
Disclaimer:
Claude helped with creating the test and fix.