Hot answers tagged graphics
26
It's hard to understand exactly what it is you don't understand.
The GPU has a series of registers that the BIOS maps. These permit the CPU to access the GPU's memory and instruct the GPU to perform operations. The CPU plugs values into those registers to map some of the GPU's memory so that the CPU can access it. Then it loads instructions into that ...
22
I decided to write a bit about the programming aspect and how components talk to each other. Maybe it'll shed some light on certain areas.
The Presentation
What does it take to even have that single image, that you posted in your question, drawn on the screen?
There are many ways to draw a triangle on the screen. For simplicity, let's assume no vertex ...
8
what are the things that "matter" in a graphics card
There are a whole bunch of factors that determine how good a GPU is. Let's take a look at some of them:
GPU Bus Width: The width of the memory bus interface from the the GPU's memory to the it's processing units. Low end GPUs have low widths, thereby limiting the amount of data that can be ...
6
It is a somewhat old question but I have just found it and I think it needs some clarification.
PAL vs. NTSC
I will explain it on the example of the field rate of 50 fields per second that is used for PAL because the numbers are easier to reason about. For NTSC you have 60/1.001 fields per second which is roughly equal to 59.94 but not exactly - see below ...
5
I am successfully using a Korean 27" IPS display (Crossover 27Q) at 2560x1440@60Hz in Linux over a VGA cable, with an old (GM45) Intel chipset. To my surprise, the hardware can drive the image just fine at that resolution over VGA. The image is relatively sharp, but there are some "ringing" artifacts to the right of hard intensity transitions.
The most ...
5
I was just curious and wanted to know the whole process from double clicking on Triangle.exe under Windows XP until I can see the triangle rotating on the monitor. What happens, how do CPU (which first handles the .exe) and GPU (which finally outputs the triangle on the screen) interact?
Let's take the assumption you actually know how an executable runs ...
4
A long time ago the first two point where true, but this is no longer the case. Any system produced in the last decades will boot fine without graphics cards. Older systems sometimes did not boot and had options in the BIOS to ignore if there was no keyboard (Rather then halt with No keyboard found. Press F1 to continue) or no graphics.
Modern systems ...
4
The Intel HD Graphics 4000 is an integrated graphics solutions bult into 3rd generation Core i3/i5/i7 processors. As such, it shares the CPU's cores' RAM.
All CPUs have 16 execution units, a memory bandwidth of 25.6 GB/s and can use up to 1,720 MB of the system's memory. The maximum GPU core clock goes up to 1300 MHz, but it varies from model to model. ...
4
So far I've been able to find out that there has been a move from very specialized circuritry that implements the various stages of the graphics pipeline to a more general approach. This transformation has been partially reflected on the 3D APIs in the form of programmable shaders. Most transistors seem to be dedicated to massively parallel SIMD units ...
4
Yes, the new interface makes much better use of available graphics hardware, pushing far more of the work to the graphics card over the CPU than was done in the past. The Windows 8 team wrote a great blog post on the subject describing the use of graphics hardware and how there was a huge focus on improving the experience through better use of the GPUs.
4
Your motherboard has an integrated VGA port. If you connect your monitor to that port, you are not using your NVIDIA card but the MB's on-board one,
In order to use your card, you need to connect your monitor to a port on your card. Since your card has no VGA port, you need to connect your monitor to it either via HDMI or DisplayPort or DVI.
If you are ...
4
Is this quite normal?
Apparently it is. From multiple different posts around the internet, it appears that this is considered a video card that runs hot. Don't worry, there are a bunch of different video cards that are known to run hot. Since this is a professional grade card, it apparently is configured to run quiet, as opposed to having the fan run ...
3
Due to the fact that these two cards do not use the same chip-set they will not run together. Sorry but you will have to choose one or the other. In order to run in SLI they must meet these requirements.
https://forums.geforce.com/default/topic/469402/sli/faq-quot-will-these-two-cards-work-in-sli-quot-sli-what-works-with-what-/
3
Wow, never seen anything like it before; but since it happens in Windows 8 and you haven't experienced it in 7 it could be an incompatibility between your graphics card and the stock driver that comes with Windows 8.
You can give this a try, this process would integrate the latest NVIDIA drivers in the Windows 8 image, so they would probably be chosen ...
3
Try running other games to see if you still get a lousy experience. If so, chances are your card is faulty, go change it. Else, chances are the game files are corrupted and you just reinstall that game. Or if you're unlucky, the current drivers have a bug and messes up that game.
Also no, DVI doesn't affect your performance.
3
I happen to own both HD 4650 and 4670 AGP cards and have already verified that they do indeed support OpenCL 1.0 at least in windows environment(tested on windows xp and windows 7 32 bit).
I did notice, how ever, that with most catalyst versions they are not recognized as OpenCL devices, so you might have to play around with driver/app version. Mainly I ...
3
a Linux that comes up to a terminal interface but can display graphics.
Is there such a beast?
Yes. Any GNU/Linux installation can do that.
It might not be the default configuration, but any Linux distribution with X (Xorg) can display graphics.
I know gnome is a desktop manager. Could I just turn that off?
This varies per distribution. But ...
3
The CPU does a lot for gaming actually. I'll list a few thing that I can think of off the top of my head.
The CPU has to be fast enough to handle the througput of your GPU. For example, your CPU needs to be fast enough to handle the traffic going to your GPU. This is why Gamers overclock their CPU's. Your video card can be bottle-necked by your CPU, this ...
3
This is probably better suited to Math, but in this form, the question actually does apply to computers as well in a way.
Computers represent numbers with bits. Fractals are created with real numbers (numbers with fractions/decimal places). Unlike integers which are nice and straight forward, real numbers are a little trickier to implement in computers. ...
3
To keep things simple we can describe it like this. Some memory addresses are reserved (by BIOS and/or operating system) not for RAM but for the video card. Any data written at those values (pointers) goes to the card. So in theory any program can write directly to the videocard just by knowing the address range and this is exactly how it was done back in ...
3
GPUs are usually driven by DMA buffers. That is, the driver compiles the commands it receives from the user space program into a stream of instructions (switch state, draw this in that way, switch contexts, etc.), that are then copied to device memory. It then instructs the GPU to execute this command buffer via a PCI register or similar methods.
So on ...
3
To the best of my knowledge, the VMWare virtual CPU (the CPU that the guest sees) doesn't include hardware virtualization support. (Certainly it doesn't on our VMWare cluster.)
This means that enabling or disabling hardware acceleration for a second-level guest shouldn't make any difference, just as it would make no difference for a guest on a physical ...
3
Photoshop files are generally backward compatible. This backward compatibility is especially maintained if you check the Maximize Compatibility option on save.
If there is a problem with one specific Photoshop file you have, we'd be happy to help you open and save that file if you edit your question to include the file and what you've already tried.
...
2
I assume by "naked" you mean that you have removed the heatsink and fan assembly that was attached to the card and all you have is the exposed card and GPU without any cooler of any kind.
Chances are you now need to buy a new graphics card.
The cooler fitted to the card is there for a reason. Graphics cards typically run very hot and need a lot of active ...
2
You need to select Save for Web in the File menu. A normal save will just give you a static image. Save for Web allows animated GIFs.
You can also open the animation editor (Timeline under the Window menu on CS6, but I think it was Animation under the same menu on older versions) to take a look at the animation sequence. Typically, each frame of the ...
2
This is usually a sign of a dying graphics card. Try running other games that aren't run on the Source engine and see if it still happens, if it does, it's likely your graphics card at fault.
Also try reinstalling your graphics drivers or updating them if possible, and check what temperature your GPU is running at (I know you haven't changed anything but ...
2
The Omni Group (developer of OmniGraffle) has a great free Mac app called OmniDazzle that was created solely for the purpose of highlighting areas of your screen.
It comes with a set of 10+ screen effects that can be activated using keyboard shortcuts, mouse gestures or the menubar icon. For the task you described—"screen shot with emphasis"—the Focal ...
2
No need for all that PHP crap.
All you need to do in Firefox is click the ico image in the URL, click "More Information", then click the "Media" button. Favicon.ico is usually the first one in the list and already highlighted, but if it isn't, scroll down and then click the "Save As" button.
By the way, since Firefox 16, ico images don't display in the ...
2
I don't know if this is specific to so-called 'HD' monitors (monitors with native resolutions that are equivalent to things like 1080p) or maybe its the latest drivers but there were a few catches for me using these instructions.
You may need to try a few different resolutions before you find one that allows you to change the image scaling settings.
When ...
2
I think what you want to disable is Beam Sync. This can be disabled through Quartz Debugger, an application that is part of the Xcode Developer Tools.
More information can be found here: http://forums.macrumors.com/showthread.php?t=779950
(Note: Take the above with a grain of salt. I do not own a Mac and found that nearly 3 year old forum thread with ...
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