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readfile: disable delayed data reading for WIN32 

Seeking the file causes slow down on Windows.

Resolves T61855
This commit is contained in:
Campbell Barton 2019-02-23 09:21:12 +11:00
parent 655faca105
commit 779860d34e
Notes: blender-bot 2023-02-14 06:17:14 +01:00 
Referenced by issue #61909, 2.8 Wire Display For Bone Armature Not Functional
Referenced by issue #61910, 2.8 Dots indicating Bone Layer Usage Not Visible
Referenced by issue #61883, particle system (collection)
Referenced by issue #61886, Blender crashes when creating new file using shortcut Cntrl N
Referenced by issue #61887, NVIDIA OpenGL Errors crash 2.80 Beta after startup
Referenced by issue #61872, Can`t assign shortcut in sculpt hide/mask menu
Referenced by issue #61873, Middle Click dragging in the empty areas under the tool tabs does not work.
Referenced by issue #61874, The title bar in the properties window says Scene even when the scene tab is not selected.
Referenced by issue #61880, massively increased .blend load times
Referenced by issue #61855, Loading times of files that link in external data has become inacceptable
Referenced by issue #58307, Multires Modifier - No smooth shading and no rotation depth.
1 changed files with 3 additions and 1 deletions
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4
source/blender/blenloader/intern/readfile.c
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@ -225,7 +225,9 @@
/**
* Delay reading blocks we might not use (especially applies to library linking).
* which keeps large arrays in memory from data-blocks we may not even use. */
#define USE_BHEAD_READ_ON_DEMAND
#if !defined(_WIN32) /* Slow on windows, see: T61855 */
# define USE_BHEAD_READ_ON_DEMAND
#endif
/* use GHash for BHead name-based lookups (speeds up linking) */
#define USE_GHASH_BHEAD