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Knight's Apprentice: Memorick's Adventures: OpenGL: Rippling water effects do not display properly

Open blakeplusplus opened this issue 5 months ago • 2 comments

Title

https://xemu.app/titles/4d490004/#Knight-s-Apprentice-Memorick-s-Adventures

US copy

Bug Description

There is an odd rippling effect present on OpenGL with water or water-like features that have rippling. Does not occur with Vulkan.

Image Image

To reproduce:

  1. Use xbox-4627_debug BIOS, else game will currently fail to load
  2. Start a new game
  3. Head to area where Merlin's staff is or progress the game far enough to get to the Enchanted Lake portal
  4. Observe the issue in OpenGL

Expected Behavior

From gameplay videos on actual hardware, it appears that this issue does not occur.

Image

https://youtu.be/B47xP9WhgWk?t=671 https://youtu.be/B47xP9WhgWk?t=1045

xemu Version

Version:      0.8.71
Branch:       master
Commit:       e02e41ccaaceffcad816cfb554dd1195767e952d
Date:         Fri Jun  6 03:00:46 AM UTC 2025

System Information

CPU:          AMD Ryzen 7 7800X3D 8-Core Processor           
OS Platform:  Linux
OS Version:   Freedesktop SDK 24.08 (Flatpak runtime)
Manufacturer: AMD
GPU Model:    AMD Radeon RX 7900 XT (radeonsi, navi31, LLVM 19.1.7, DRM 3.63, 6.15.2-arch1-1)
Driver:       4.6 (Core Profile) Mesa 25.1.1 (git-7485541cc3)
Shader:       4.60

Additional Context

No response

blakeplusplus avatar Jun 13 '25 00:06 blakeplusplus

vulkan and ogl are identical for me

i5 9600k, nvidia rtx 3060

so perhaps it is AMD specific

Image

medievil1 avatar Jun 22 '25 00:06 medievil1

@medievil1 Can confirm it is still an issue on latest for me, so you may be right about it being AMD-specific. Image

Version:      0.8.80
Branch:       master
Commit:       348b03d6cefbfacbc6fa99b1dc902f53f28f0fa1
Date:         Sat Jun 21 20:29:44 UTC 2025

CPU:          AMD Ryzen 7 7800X3D 8-Core Processor           
OS Platform:  Linux
OS Version:   Arch Linux
Manufacturer: AMD
GPU Model:    AMD Radeon RX 7900 XT (radeonsi, navi31, LLVM 20.1.6, DRM 3.63, 6.15.2-arch1-1)
Driver:       4.6 (Core Profile) Mesa 25.1.4-arch1.1
Shader:       4.60

blakeplusplus avatar Jun 22 '25 00:06 blakeplusplus

Should be fixed with #2472

Triticum0 avatar Oct 15 '25 10:10 Triticum0

Tested on lasted build + tested with cold dev build and pr 2472 and issue still occurs

Triticum0 avatar Oct 15 '25 11:10 Triticum0