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wgl: Use an hwnd xor hdc for framebuffers

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It seems maybe hdcs can get recycled?

Fixes: 28058221 ("wgl: Support contexts created from non-window DCs")
(cherry picked from commit 3f35e65253)

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/41269>
This commit is contained in:
Jesse Natalie 2026-04-24 15:33:03 -07:00 • committed by Eric Engestrom
parent d87649d8be
commit 4083a34188
3 changed files with 4 additions and 3 deletions
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2
.pick_status.json
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@ -1194,7 +1194,7 @@
"description": "wgl: Use an hwnd xor hdc for framebuffers",
"nominated": true,
"nomination_type": 2,
"resolution": 0,
"resolution": 1,
"main_sha": null,
"because_sha": "2805822141bb392cc282d9ffaad2ff49f57a23e0",
"notes": null

3
src/gallium/frontends/wgl/stw_context.c
View file

@ -543,8 +543,9 @@ get_unlocked_refd_framebuffer_from_dc(HDC hDC)
* those here.
*/
int iPixelFormat = stw_pixelformat_guess(hDC);
HWND hWnd = WindowFromDC(hDC);
if (iPixelFormat)
fb = stw_framebuffer_create(hDC, WindowFromDC(hDC), stw_pixelformat_get_info(iPixelFormat), STW_FRAMEBUFFER_WGL_WINDOW, stw_dev->fscreen);
fb = stw_framebuffer_create(hWnd ? NULL : hDC, hWnd, stw_pixelformat_get_info(iPixelFormat), STW_FRAMEBUFFER_WGL_WINDOW, stw_dev->fscreen);
if (!fb)
return NULL;
}

2
src/gallium/frontends/wgl/stw_framebuffer.c
View file

@ -475,7 +475,7 @@ stw_framebuffer_from_hdc_locked(HDC hdc)
hwnd = WindowFromDC(hdc);
return stw_framebuffer_from_hwnd_hdc_locked(hwnd, hdc);
return stw_framebuffer_from_hwnd_hdc_locked(hwnd, hwnd ? NULL : hdc);
}