libretro / libretro/RetroArch

[RGUI] The alpha in the thumbnail is black

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menu : rgui platform: 3ds platform: windows user interface
Dominant language
C
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Description

Description

The alpha in the thumbnail comes out in black.
before

Expected behavior

The background must be visible according to the alpha value.

Version/Commit
  • RetroArch: 1.9.8/release
Environment information
  • OS: win64 / 3DS in both

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the thumbnail rendering issue on the reported win64 and 3DS environments using RetroArch 1.9.8/release, then compare the thumbnail's alpha handling with the expected behavior shown in the issue. Done means the background is visible according to the alpha value instead of appearing black.

Written by the indexing model from the issue text.

Assessment

Tech stack
c
Domain
computer-graphics, frontend
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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