System

The System section allows you to set graphics card options, memory limits & sound settings.

If your hardware does not support some of the options described on this page, then they will either not show up or be corrected on startup.

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Preferences System section.

Cycles Render Device

Changes the computing device the Cycles render engine uses to render images. Cycles can use either the CPU or certain GPU’s to render images, for more information see the GPU Rendering page.

None

Quand fixé à None ou quand la seule option est None : le CPU sera utilisé comme dispositif de calcul pour le moteur de rendu Cycles.

CUDA

If the system has a compatible Nvidia CUDA device, it will show up an option for rendering with Cycles.

Optix

If the system has a compatible Nvidia Optix device, it will show up an option for rendering with Cycles.

OpenCL

Si le système a un dispositif compatible AMD OpenCL, il montrera une option pour le rendu avec Cycles.

Memory & Limits

Undo Steps

Number of Undo steps available.

Undo Memory Limit

Maximum memory usage in Mb (0 is unlimited).

Global Undo

This enables Blender to save actions done when you are not in Edit Mode. For example, duplicating objects, changing panel settings or switching between modes.

Avertissement

While disabling this option does save memory, it stops the Redo Panel from functioning, also preventing tool options from being changed in some cases.

For typical usage, its best to keep this enabled.

Sequencer Cache Limit

Upper limit of the Sequencer’s memory cache (in megabytes). For an optimal Clip editor and Sequencer performance, high values are recommended.

Console Scroll-back Lines

Le nombre de lignes, en tampon en mémoire de la fenêtre console. Utile pour les fins de débogage et le rendu en ligne de commande.

Texture Time Out

Time since last access of a GL texture in seconds, after which it is freed. Set this to 0 to keep textures allocated.

Garbage Collection Rate

Number of seconds between each run of the GL texture garbage collector.

VBO Time Out

Time since last access of a GL Vertex buffer object in seconds after which it is freed (set to 0 to keep VBO allocated).

Garbage Collection Rate

Number of seconds between each run of the GL Vertex buffer object garbage collector.

Sound

This panel contains the sound settings for live playback within Blender and are only available with SDL or OpenAL. To control these settings for exporting sound see the Encoding Panel and Audio Panel.

Audio Device

Définit le moteur audio à utiliser pour traiter et produire le son.

None

Pas de prise en charge audio (les bandes audio peuvent toujours être chargées normalement)

SDL

Utilise l’API Simple Direct Media Layer de libsdl.org pour rendre les sons directement. Très utile pour l’édition de bandes dans le sequencer.

OpenAL

Provides buffered sound rendering with 3D/spatial support. Used for 3D source support by speaker objects.

Channels

Fixe le nombre de canaux audio. Les options disponibles sont : Mono, Stereo, 4 Channels , 5.1 Surround , 7.1 Surround.

Mixing Buffer

Fixe le nombre d’échantillons utilisés par le tampon de mixage audio. Les options disponibles sont : 512, 1024, 2048, 4096, 8192, 16384, et 32768. Les tailles de tampon plus importantes peuvent causer des problèmes de latence, mais si vous entendez des clics ou d’autres problèmes, essayez d’augmenter la taille.

Sample Rate

Fixe la fréquence d’échantillonnage <https://en.wikipedia.org/wiki/Sampling_(signal_processing)#Sampling_rate> audio. Les options disponibles sont : 44.1 Khz, 48 Khz, 96 Khz et 192 Khz.

Sample Format

Fixe le format de l’échantillonnage audio. Les options disponibles sont : 32 bit float, 8 bit Unsigned, 16 Bits Signed, 24 Bits Signed, 32 Bits Signed, 32 Bits Float, et 64 Bits Float.