Bug 274748

Summary: REGRESSION (iOS 14.5 - 17.5.1): Lower FPS on some shader toy demos
Product: WebKit Reporter: zhefeng.zhang <337031709>
Component: WebGLAssignee: Nobody <webkit-unassigned>
Status: NEW    
Severity: Critical CC: djg, jond, kbr, kkinnunen, webkit-bug-importer
Priority: P1 Keywords: InRadar
Version: Safari 17   
Hardware: iPhone / iPad   
OS: iOS 17   
Attachments:
Description Flags
Test screenshots none

zhefeng.zhang
Reported 2024-05-27 02:32:17 PDT
Created attachment 471520 [details] Test screenshots ARRAY(0x55c54f0030b0)
Attachments
Test screenshots (10.04 MB, application/x-zip-compressed)
2024-05-27 02:32 PDT, zhefeng.zhang 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
zhefeng.zhang
Comment 1 2024-05-27 02:33:18 PDT
Use iPhone XR for testing and run the following 3D rendering webpages on Safari browser to compare the performance by observing the game frame rate data on the webpage. https://webglsamples.org/aquarium/aquarium.html https://www.shadertoy.com/view/XfyXRV In iOS 14.5 Safari, open the aquarium project and set the number of fish to 15000, you can get 25 FPS. Open shadertoy.com to view the shader project and get a frame rate of 41.9 FPS. In iOS 17.5.1 Safari, open the aquarium project and set the number of fish to 15000, you can get 21 FPS. Open shadertoy.com to view the shader project and get a frame rate of 27 FPS.
Radar WebKit Bug Importer
Comment 2 2024-05-27 10:10:02 PDT
<rdar://problem/128803250>
zhefeng.zhang
Comment 3 2024-06-24 01:11:31 PDT
When will this issue be resolved? And what is the estimated iOS version that will include the fix?
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