Using transparent PNG for game development?

Question

Using transparent PNG for game development?

Spamzilla 41

I'm thinking of developing a game using transparent PNGs but I have a couple issues:

I can only get things to animate while they are moving.
The images cut into each other leaving empty spots.

P a u l 7,571 Reputation points

2023-02-03T17:56:35.89+00:00

Could you include any relevant source code/screenshots in your question?
Spamzilla 41 Reputation points

2023-02-06T16:43:02.0466667+00:00

Here is a file with everything. Maybe it will help?

https://mega.nz/file/XfZgQbyA#1JDuIeqI9aQYkVhTIrNiGOXQiozyZwxuM52nJRW5efc
Jack J Jun 21,661 Reputation points Microsoft Vendor

2023-02-07T08:12:42.9166667+00:00

@Spamzilla , Welcome to Microsoft Q&A, what is your current app type? I downloaded the zip file from your link, but windows detected virus. could you upload it again via Onedrive or Github?
Reza Aghaei 4,801 Reputation points MVP

2023-02-07T09:16:08.0266667+00:00

You can just remove exe and dll files, but anyhow Images are missing.
Spamzilla 41 Reputation points

2023-02-13T17:35:37.35+00:00

I'm using C#, VS 2019, .NET framework 1.7.2... There shouldn't be any missing graphics now:

https://1drv.ms/u/s!Ap4KZFMds2L1hQe6QMu2FOqQ1K1z?e=BnwOAW
Jack J Jun 21,661 Reputation points Microsoft Vendor

2023-02-14T03:08:08.96+00:00

@Spamzilla, thanks for the feedback, When I try to run your project, I meet the following error:

Could you check it then send the correct program without any virus?
Spamzilla 41 Reputation points

2023-02-14T13:50:57.6+00:00

There is no virus. If you think there is one then why don't you check the source code?
jerome14 1 Reputation point

2023-02-14T14:49:08.2133333+00:00

You already got an answer : use Direct2D

Games must use GPU, then Direct2D/DirectX mandatory
Spamzilla 41 Reputation points

2023-02-14T18:52:05.25+00:00

Can you elaborate? That doesn't really tell me anything!
Reza Aghaei 4,801 Reputation points MVP

2023-02-14T18:56:14.8633333+00:00

Now I can run your code; then let us know what the issue is. I cannot see any of those two issues that you mentioned in the question.

P a u l 7,571 Reputation points

2023-02-03T17:56:35.89+00:00

Could you include any relevant source code/screenshots in your question?
Spamzilla 41 Reputation points

2023-02-06T16:43:02.0466667+00:00

Here is a file with everything. Maybe it will help?

https://mega.nz/file/XfZgQbyA#1JDuIeqI9aQYkVhTIrNiGOXQiozyZwxuM52nJRW5efc
Jack J Jun 21,661 Reputation points Microsoft Vendor

2023-02-07T08:12:42.9166667+00:00

@Spamzilla , Welcome to Microsoft Q&A, what is your current app type? I downloaded the zip file from your link, but windows detected virus. could you upload it again via Onedrive or Github?
Reza Aghaei 4,801 Reputation points MVP

2023-02-07T09:16:08.0266667+00:00

You can just remove exe and dll files, but anyhow Images are missing.
Spamzilla 41 Reputation points

2023-02-13T17:35:37.35+00:00

I'm using C#, VS 2019, .NET framework 1.7.2... There shouldn't be any missing graphics now:

https://1drv.ms/u/s!Ap4KZFMds2L1hQe6QMu2FOqQ1K1z?e=BnwOAW
Jack J Jun 21,661 Reputation points Microsoft Vendor

2023-02-14T03:08:08.96+00:00

@Spamzilla, thanks for the feedback, When I try to run your project, I meet the following error:

Could you check it then send the correct program without any virus?
Spamzilla 41 Reputation points

2023-02-14T13:50:57.6+00:00

There is no virus. If you think there is one then why don't you check the source code?
jerome14 1 Reputation point

2023-02-14T14:49:08.2133333+00:00

You already got an answer : use Direct2D

Games must use GPU, then Direct2D/DirectX mandatory
Spamzilla 41 Reputation points

2023-02-14T18:52:05.25+00:00

Can you elaborate? That doesn't really tell me anything!
Reza Aghaei 4,801 Reputation points MVP

2023-02-14T18:56:14.8633333+00:00

Now I can run your code; then let us know what the issue is. I cannot see any of those two issues that you mentioned in the question.

Answer 1

Castorix31 68,491

For games, use Direct2D (or D3D) for Hardware acceleration

For 2D, use ID2D1SpriteBatch which allows to use Sprite sheets, the transparentcy being automatically managed by Direct2D

A test for simple animations with 2 Sprites sheets (bird and butterfly) in C# with P/Invoke (Win2D can also be used), with WinUI 3 (same code as with Winforms)

(animations are smoother than on the GIF...)

Direct2D_CSharp

Spamzilla 41 Reputation points

2023-02-04T23:58:46.2566667+00:00

Does this work with Visual C#?
Castorix31 68,491 Reputation points

2023-02-05T02:22:25.6433333+00:00

As I said, I tested with C# with P/Invoke for Direct2D, with VS 2022 (I posted a version of Direct2D.cs in a WinUI 3 sample in C# : https://github.com/castorix/WinUI3_SwapChainPanel_Layered

But you can also use Win2D (even simpler if you never developed games in C++/Direct2D)

Using transparent PNG for game development?

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