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Emulator Issues #10072

closed

Dual source blending fallback removed - graphical problems on mobile devices in Mario Kart: Double Dash, Resident Evil 4 and more

Added by weter11 almost 8 years ago. Updated almost 7 years ago.

Status:
Fixed
Priority:
Normal
Assignee:
-
% Done:

0%

Operating system:
N/A
Issue type:
Bug
Milestone:
Regression:
Yes
Relates to usability:
No
Relates to performance:
No
Easy:
No
Relates to maintainability:
No
Regression start:
5.0-1653
Fixed in:
5.0-6152

Description

Game Name?

Resident evil 4 (RE4)

Game ID?

G4BP08

What's the problem? Describe what went wrong.

White textures and shadows ingame

What steps will reproduce the problem?

Start new game, watch FMV, when 3D graphics start, you'll see the problem.

Which versions of Dolphin did you test on? Does using an older version of Dolphin solve your issue? If yes, which versions of Dolphin used to work?

Latest working is 5.0-1650.
After OGL/Vulkan: Drop destination alpha pass 5.0-1653 in all versions I see this problem. Gameplay is impossible.

What are your PC specifications?

Xiaomi Mi4c, Adreno 418, Android 7.1.1, OGL ES 3.2.

Is there any other relevant information? (e.g. logs, screenshots,
configuration files)

This problem is also on Adreno 530 devices and Mali.


Files

Screenshot_20170203-114611.png (964 KB) Screenshot_20170203-114611.png weter11, 02/03/2017 09:47 AM

Related issues 6 (0 open6 closed)

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Actions #1

Updated by degasus almost 8 years ago

May you try if this bug also happens with the cached interpreter or the software video backend?

But it is likely because of the removed destination alpha fallback. It might be that we'll require dual source blending for this game: https://www.khronos.org/registry/OpenGL/extensions/EXT/EXT_blend_func_extended.txt -- But as far as I know neither Adreno nor Mali ship this extension.

Actions #2

Updated by weter11 almost 8 years ago

degasus wrote:

May you try if this bug also happens with the cached interpreter or the software video backend?

But it is likely because of the removed destination alpha fallback. It might be that we'll require dual source blending for this game: https://www.khronos.org/registry/OpenGL/extensions/EXT/EXT_blend_func_extended.txt -- But as far as I know neither Adreno nor Mali ship this extension.

Its working in software mode. With interpreter problem is exist. Yes that extention isn't in my device drivers.

Actions #3

Updated by JosJuice almost 8 years ago

  • Subject changed from Problems with shadows on android in RE4 [Short description of your bug here (~10 words)] to Problems with shadows on android in RE4
  • Status changed from New to Won't fix
  • Regression changed from No to Yes
  • Regression start set to 5.0-1653

The destination alpha fallback was dropped intentionally, so I don't think it will be coming back. (If any dev disagrees and wants to re-add it, feel free to reopen this issue.)

https://github.com/dolphin-emu/dolphin/pull/4577

Actions #4

Updated by weter11 almost 8 years ago

But how it work on Vulkan? This extention only for OGL or not?
Because on Vulkan on my device it also has the same problem.

Actions #5

Updated by weter11 almost 8 years ago

Sorry, look at AIDA64, as I understand it is Dual Source Blend Operations. It's unsupported at this time in drivers.

Actions #6

Updated by JosJuice over 7 years ago

Actions #7

Updated by JosJuice over 7 years ago

Actions #8

Updated by JosJuice over 7 years ago

Actions #9

Updated by JosJuice over 7 years ago

Actions #10

Updated by JosJuice over 7 years ago

Actions #11

Updated by JosJuice over 7 years ago

  • Subject changed from Problems with shadows on android in RE4 to Dual source blending fallback removed - graphical problems on mobile devices in Mario Kart: Double Dash, Resident Evil 4 and more
Actions #12

Updated by JosJuice about 7 years ago

Actions #13

Updated by JosJuice almost 7 years ago

  • Status changed from Won't fix to Fixed
  • Fixed in set to 5.0-6152
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