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Questions tagged [graphics]

The tag has no usage guidance.

1
vote
0answers
55 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 ...
31
votes
5answers
11k 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 ...
0
votes
2answers
49 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 ...
1
vote
1answer
93 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 ...
2
votes
1answer
196 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
1answer
83 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 ...
0
votes
2answers
161 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 ...
2
votes
1answer
200 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 ...
0
votes
1answer
310 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 ...
5
votes
2answers
431 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 ...
0
votes
2answers
476 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
2answers
376 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-...
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 ...
1
vote
1answer
390 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 ...
0
votes
1answer
674 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 ...
7
votes
1answer
496 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, ...
2
votes
2answers
401 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 ...
0
votes
3answers
531 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
2answers
411 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 ...