OSDev.org

The Place to Start for Operating System Developers
It is currently Thu Mar 28, 2024 4:07 pm

All times are UTC - 6 hours




Post new topic Reply to topic  [ 30 posts ]  Go to page 1, 2  Next
Author Message
 Post subject: What graphics card is good at VBE?
PostPosted: Sun Oct 10, 2021 10:37 am 
Offline
Member
Member

Joined: Tue Aug 17, 2021 10:40 am
Posts: 104
Location: CN
Hello! i want to make my os run on real hardware. but sadly i can only get around 1fps but 600fps on virtual machine. so I'm wondering what graphics card is good At VBE.

and btw here's my OS
you can find it in github/nifanfa
Image

_________________
My github: https://github.com/nifanfa


Last edited by nifanfa on Mon Oct 11, 2021 9:35 am, edited 3 times in total.

Top
 Profile  
 
 Post subject: Re: What graphics card is good at VBE?
PostPosted: Sun Oct 10, 2021 10:41 am 
Offline
Member
Member

Joined: Tue Aug 17, 2021 10:40 am
Posts: 104
Location: CN
It seems that older graphics cards are good at VBE. i noticed of ati rage xl 8mb. will it get higher fps?

Message from moderator: Please do not apply styling to your post unless it serves a purpose.
Got it!

_________________
My github: https://github.com/nifanfa


Last edited by nifanfa on Mon Oct 11, 2021 9:33 am, edited 1 time in total.

Top
 Profile  
 
 Post subject: Re: What graphics card is good at VBE?
PostPosted: Sun Oct 10, 2021 12:22 pm 
Offline

Joined: Sat Oct 09, 2021 8:29 am
Posts: 7
Location: Lisbon portugal
Say do you have a repository of you code :) wat is the address? Thanks?


Top
 Profile  
 
 Post subject: Re: What graphics card is good at VBE?
PostPosted: Sun Oct 10, 2021 12:39 pm 
Offline
Member
Member

Joined: Thu May 17, 2007 1:27 pm
Posts: 999
There is no reason to increase the font size for your posts.

VBE is not inherently slow. Even modern cards still sometimes (but not always, i.e., not for all tranfers) use memory mapped VRAM to transfer data. If writes to the framebuffer are slow, you are probably not using write combining (WC). Look up WC in the Wiki and Intel manuals, and set it up properly.

_________________
managarm: Microkernel-based OS capable of running a Wayland desktop (Discord: https://discord.gg/7WB6Ur3). My OS-dev projects: [mlibc: Portable C library for managarm, qword, Linux, Sigma, ...] [LAI: AML interpreter] [xbstrap: Build system for OS distributions].


Top
 Profile  
 
 Post subject: Re: What graphics card is good at VBE?
PostPosted: Sun Oct 10, 2021 5:27 pm 
Offline
Member
Member

Joined: Mon Mar 25, 2013 7:01 pm
Posts: 5100
In addition to WC, you should also make sure you're not reading from the framebuffer. Reading is usually much slower than writing.


Top
 Profile  
 
 Post subject: Re: What graphics card is good at VBE?
PostPosted: Mon Oct 11, 2021 9:27 am 
Offline
Member
Member

Joined: Tue Aug 17, 2021 10:40 am
Posts: 104
Location: CN
Hi Octocontrabass

i didn't read from video memory. I'm using double buffering

_________________
My github: https://github.com/nifanfa


Top
 Profile  
 
 Post subject: Re: What graphics card is good at VBE?
PostPosted: Mon Oct 11, 2021 9:29 am 
Offline
Member
Member

Joined: Tue Aug 17, 2021 10:40 am
Posts: 104
Location: CN
honeydatax wrote:
Say do you have a repository of you code :) wat is the address? Thanks?


you can find it in github/nifanfa

_________________
My github: https://github.com/nifanfa


Top
 Profile  
 
 Post subject: Re: What graphics card is good at VBE?
PostPosted: Mon Oct 11, 2021 9:30 am 
Offline
Member
Member

Joined: Tue Aug 17, 2021 10:40 am
Posts: 104
Location: CN
Octocontrabass wrote:
In addition to WC, you should also make sure you're not reading from the framebuffer. Reading is usually much slower than writing.


Hi Octocontrabass

i didn't read from video memory. I'm using double buffering

_________________
My github: https://github.com/nifanfa


Top
 Profile  
 
 Post subject: Re: What graphics card is good at VBE?
PostPosted: Mon Oct 11, 2021 4:03 pm 
Offline

Joined: Sat Oct 02, 2021 10:28 pm
Posts: 11
nifanfa wrote:
Hello! i want to make my os run on real hardware. but sadly i can only get around 1fps but 600fps on virtual machine. so I'm wondering what graphics card is good At VBE.

and btw here's my OS
you can find it in github/nifanfa
Image

哈哈哈,你在不在胡自成群里~


Top
 Profile  
 
 Post subject: Re: What graphics card is good at VBE?
PostPosted: Tue Oct 12, 2021 3:24 am 
Offline
Member
Member

Joined: Wed Oct 01, 2008 1:55 pm
Posts: 3192
You should avoid Intel platforms if you want high-performance VBE. You generally should also avoid new systems and go with systems that are a bit dated. Although, modern AMD systems work pretty well.


Top
 Profile  
 
 Post subject: Re: What graphics card is good at VBE?
PostPosted: Wed Oct 13, 2021 3:04 am 
Offline
Member
Member

Joined: Mon Jul 05, 2021 6:57 pm
Posts: 118
rdos wrote:
You should avoid Intel platforms if you want high-performance VBE. You generally should also avoid new systems and go with systems that are a bit dated. Although, modern AMD systems work pretty well.


Why is that (avoid Intel platforms)? And also why would "a bit dated" systems be faster?


Top
 Profile  
 
 Post subject: Re: What graphics card is good at VBE?
PostPosted: Wed Oct 13, 2021 8:21 am 
Offline
Member
Member

Joined: Sun Jun 23, 2019 5:36 pm
Posts: 618
Location: North Dakota, United States
davmac314 wrote:
rdos wrote:
You should avoid Intel platforms if you want high-performance VBE. You generally should also avoid new systems and go with systems that are a bit dated. Although, modern AMD systems work pretty well.


Why is that (avoid Intel platforms)? And also why would "a bit dated" systems be faster?

Confused about this as well. Considering that the Linux Intel GPU drivers are plenty fast, there's a high probability that your doing something wrong if they're slow. The dated hardware argument only makes sense in the context of "this might be easier to program". But I generally find the Intel GPU manuals incredibly confusing and disorganized, especially since they went "Hey lets break tradition and organize our GPU registers alphabetically and not by category/address like everybody else". (What's ironic about that is they also wrote the AHCI and HDA specifications and didn't do that.)


Top
 Profile  
 
 Post subject: Re: What graphics card is good at VBE?
PostPosted: Wed Oct 13, 2021 9:43 am 
Offline
Member
Member

Joined: Tue Aug 17, 2021 10:40 am
Posts: 104
Location: CN
benjixu wrote:
nifanfa wrote:
Hello! i want to make my os run on real hardware. but sadly i can only get around 1fps but 600fps on virtual machine. so I'm wondering what graphics card is good At VBE.

and btw here's my OS
you can find it in github/nifanfa
Image

哈哈哈,你在不在胡自成群里~


胡自成是谁???

_________________
My github: https://github.com/nifanfa


Top
 Profile  
 
 Post subject: Re: What graphics card is good at VBE?
PostPosted: Wed Oct 13, 2021 9:47 am 
Offline
Member
Member

Joined: Tue Aug 17, 2021 10:40 am
Posts: 104
Location: CN
um. I don't want to write a specified graphics card driver(that's is very difficult and it is not as compatible as VBE). and i just want a graphics card as fast as virtual machine.

_________________
My github: https://github.com/nifanfa


Top
 Profile  
 
 Post subject: Re: What graphics card is good at VBE?
PostPosted: Wed Oct 13, 2021 9:50 am 
Offline
Member
Member

Joined: Tue Aug 17, 2021 10:40 am
Posts: 104
Location: CN
i got 8fps on hd3000. and that's still pretty slow..

_________________
My github: https://github.com/nifanfa


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 30 posts ]  Go to page 1, 2  Next

All times are UTC - 6 hours


Who is online

Users browsing this forum: Amazonbot [bot], Bing [Bot], cloudapio, DotBot [Bot] and 70 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group