Questions tagged [graphics]

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61
votes
3answers
8k views

How does my screen driver handle so much data?

I just did some quick calculations: On my MacBook I have a resolution of 2560x1440 multiplied by 24 Bit for colors we get 11.05MB for a single picture or 663MB per second at 60 fps. I guess there is ...
31
votes
5answers
12k views

How do devices like the Game Boy Advance achieve their frame rate?

I've been designing my own handheld gaming device based around an AVR microcontroller and a small OLED display. I started off with a monochrome display 128x64 pixels and can comfortably draw to it at ...
11
votes
3answers
2k views

Can it be proven that running a GPU at high temps is bad for the card?

If you continuously run your graphics card at between 80°C and 90°C (176°F and 194°F) is it actually bad for the graphics card? I.e. does it reduce the life of the card? Can this be proven? Or is it ...
6
votes
1answer
546 views

LCD driver: What changes in 3-D mode?

Facts: We know that a system needs high data transfer speed if it works with +120 Hz refresh rate and +1080p resolution(This mostly requires DVI dual link). We know that in a 3-D system with shutter, ...
5
votes
2answers
628 views

16 bit Graphics Chip [closed]

I am trying to build a 16 bit single board computer based around the 68000 and am wondering if there are any non proprietary 16 bit graphics chips like the Yamaha V9958 with readily available ...
2
votes
1answer
392 views

So there was an ant that somehow got inside my screen. How do I remove it? [closed]

Wondering if it's possible to remove the LCD screen without damaging it. I noticed there are six black metal thingys at the back of the module that is twisted up holding the LCD in-place, is it safe ...
2
votes
2answers
544 views

Interfacing with a graphic lcd

I am ordering a graphic lcd NHD‐12864AZ‐FL‐YBW and most of the interface code seems pretty simple. On the datasheet it has the following list of commands I don't understand what is put in the write ...
2
votes
1answer
459 views

Drawing a bitmap using 2D DMA on STMF32F4

I'm trying to draw a bitmap using 2D DMA, so I have the address of the destination which is the front buffer, and then I read a line from the bitmap, blit it using the 2D DMA.. I get scanlines, and ...
1
vote
2answers
145 views

What does it means that a MCU has support for OpenGL?

I am trying to understand the meaning of when someone says that PowerPC 7410 CPU has support for OpenGL based software. Does it mean that there are any specific instruction in its ISA architecture ...
1
vote
1answer
127 views

Simplest display for homemade 8080 based computer-what to use? [closed]

I'm designing a 8080 processor based computer and I want it to be able to at least output something visually. I have thought about using SMD LED matrix made by myself, but even with the 160 x 120 px ...
1
vote
1answer
515 views

What is the proper way to store data into a frame buffer?

I am trying to plan a graphics processor project that will only render lines. It will use the bresenhmam's line algorithm. After reading on the algorithm, it makes sense how it works to calculate ...
1
vote
0answers
371 views

How to rotate a square on a TFT ILI9486 screen with Arduino

Problem Summary I have a “square” rotating on my 3.5 Inch TFT screen (ILI9486 driver) with dots/circles at each of its 4 corners. It is connected to an Arduino MEGA 2560 There are a few issues with ...
0
votes
2answers
444 views

What tasks does Graphics hardware perform and what steps does it follow to do so

I am not intending to go into high end GPUs here. That is too advanced. What tasks does a basic graphics hardward perform? By basic perhaps we can go back in time and see what it did in the early days ...
0
votes
2answers
648 views

Why does the ssd1306 OLED controller have an unusual memory layout?

I've recently ported a driver for the ssd1306 OLED controller. https://cdn-shop.adafruit.com/datasheets/SSD1306.pdf http://www.ebay.co.uk/itm/0-96-inch-128x64-I2C-Interface-White-Color-OLED-Display-...
0
votes
2answers
77 views

is the intel quark capable of running an opencv webcam unity application for linux? [closed]

I built a fairly simple application in Unity that uses a webcam and opencv to overlay graphics in realtime to a user's face. I am looking for a low cost microcontroller/computer to run the ...
0
votes
2answers
223 views

Drawing bitmap fast on ARM Cotex

I'm trying to blit an image with sprites, animated. While drawing the animated sprite, I draw a background before the sprites. With the sprites, the game looks smooth and playable, with the background ...
0
votes
1answer
1k views

SMD Ceramic capacitor burned [closed]

To begin with i have an AMD Sapphire Radeon R9 270 and it worked fine for a year and a half. I was doing some cleaning on my pc (cleaning the heatsinks and things like that) and when i connected ...
0
votes
3answers
852 views

8 bit computer graphics [closed]

I'm working on learning how 8 bit computers work and operate. I know you can make a (tedious) microprocessor with a larg amount of logic gates and such, but how does it read graphics? I know this uses ...
0
votes
1answer
26 views

Swapping a step down converter

I have a faulty graphics card i am trying to repair, i noticed on the back near the 12v connector that a step down converter in Q501 had a leg missing (right side, second from the bottom) and i am not ...
0
votes
1answer
873 views

LTDC STMF32 Double buffering problem

I'm trying to do double buffering using the hardware, STMF32492I.. so first I'm initalizing two layers in two different addresses. Then I write to the back buffer, switch the back buffer.. But The ...
0
votes
2answers
769 views

How to connect a frame buffer to an LCD monitor through DisplayPort or DVI in an integrated system

I would first like to state that I am primarily a software engineer. While I have spent 14ish hours researching this so far, I apologize in advance if I miss a core concept or use incorrect ...
0
votes
0answers
35 views

In 1965 when Ivan Sutherland was testing the Vr machine, what was he viewing in the headset

Ivan Sutherland is an american inventor who invented virtual reality and the sketch, they recorded a video 55 years ago about him experiencing the headset, I always wondered what was he actually ...
0
votes
0answers
32 views

What would cause streaking in graphics LCD display?

I am using a 128x64 graphic LCD module that uses either NJU6676 or ST7565P similar to this Zettler module. I am getting vertical streaks as pictured. They appear to be most pronounced when the topmost ...
0
votes
1answer
55 views

Which would be cost effective, a display with graphics controller or without graphics controller?

I am working on a touch screen display on stm32. I found some evaluation boards like mikromedia-7-stm32f7 and stm32h753i-eval Mikroelectronica uses the external controller SSD1963, although the MCU ...
-2
votes
1answer
98 views

What kind of software I can use to plot graphics like this? And how is this plotted? [closed]

I am trying to plot the transfer function of a circuit. What kind of software I can use to plot graphics like this, without using circuit simulation software? I would like to understand things ...