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Bug 3213 - SDL_Renderer stops rendering, with app on-screen, via special sequence of window operations
Summary: SDL_Renderer stops rendering, with app on-screen, via special sequence of win...
Status: RESOLVED DUPLICATE of bug 3202
Alias: None
Product: SDL
Classification: Unclassified
Component: video (show other bugs)
Version: 2.0.3
Hardware: x86 Windows (All)
: P2 major
Assignee: Sam Lantinga
QA Contact: Sam Lantinga
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-12-24 10:29 UTC by David Ludwig
Modified: 2015-12-27 18:04 UTC (History)
2 users (show)

See Also:

Attachments
Win32-based bug demo-app (3.37 MB, application/zip)
2015-12-24 11:23 UTC, David Ludwig 		Details
View All Add an attachment (proposed patch, testcase, etc.)

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Description David Ludwig 2015-12-24 10:29:27 UTC 
On Windows platforms, *both* Win32 and WinRT, SDL_Renderer calls can fail to do anything, provided that a special sequence of windowing operations are undertaken.

To note, this bug was reproduced via MSVC 2015 running on Windows 10.  It may happen elsewhere, I'm not sure though.

Steps to Reproduce:
1. create an SDL_Renderer-capable Windows app, one with a resizable, non-fullscreen window.  (Sample app + code + project is forthcoming.)
2. launch app
3. maximize window via app-window's maximize button
4. minimize window via app-window's minimize button
5. alt-tab back to app-window

Expected Results:
App-window restores, and continues to render new content

Observed Results:
App-window restores, but rendering no longer works, and new content is no longer drawn.

Additional Notes:
* Via stepping through the code, it appears that many SDL_Renderer calls fail to work (after the Steps to Reproduce have been employed), as the renderer's "hidden" property is set to SDL_TRUE.
Comment 1 David Ludwig 2015-12-24 11:20:10 UTC 
Confirmed -- this bug occurs in SDL 2.0.3, in Win32 apps
Comment 2 David Ludwig 2015-12-24 11:23:20 UTC 
Created attachment 2345 [details]
Win32-based bug demo-app

This demo includes source, and pre-built binaries, with which to view this bug.
Comment 3 Philipp Wiesemann 2015-12-25 12:28:12 UTC 
Maybe related to bug 3202.
Comment 4 David Ludwig 2015-12-27 18:04:58 UTC 
Yup, this looks like a duplicate.

Thanks, Philipp!

*** This bug has been marked as a duplicate of bug 3202 ***