Emulator Issues #10072: Dual source blending fallback removed - graphical problems on mobile devices in Mario Kart: Double Dash, Resident Evil 4 and more - Emulator - Dolphin bug tracker

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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 about 7 years ago. Updated over 6 years ago.

Status:

Fixed

Priority:

Normal

Assignee:

% Done:

Operating system:

N/A

Issue type:

Bug

Milestone:

Regression:

Yes

Relates to usability:

Relates to performance:

Easy:

Relates to maintainability:

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 open — 6 closed)

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Updated by degasus about 7 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.

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Updated by weter11 about 7 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.

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Updated by JosJuice about 7 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

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Updated by weter11 about 7 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.

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Updated by weter11 about 7 years ago

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

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Updated by JosJuice about 7 years ago

Has duplicate Emulator Issues #10192: Android version emulator some game bug added

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Updated by JosJuice almost 7 years ago

Has duplicate Emulator Issues #10049: resident evil 4 on android added

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Updated by JosJuice almost 7 years ago

Has duplicate Emulator Issues #10048: [Short description of your bug here (~10 words)] added

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Updated by JosJuice almost 7 years ago

Has duplicate Emulator Issues #10031: resident evil 4 on android added

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#10

Updated by JosJuice almost 7 years ago

Has duplicate Emulator Issues #10297: [Android] Mario Kart Double Dash blue fog since v5.0-1653 added

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#11

Updated by JosJuice almost 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

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#12