Screens & 2D Graphics: Crash Course Computer Science #23
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Date: 2022-04-04
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Comments and reviews: 10
Eli
LCD doesn't use raster scanning. All pixels that change color are refreshed at specific intervals, usually 60, 120 or 144 times a second. If a pixel stays the same color and intensity, it is not refreshed.
GPUs would sometimes choose to refresh the top half first, and then the bottom, and sometimes divide the display into even more sections for sequential refresh. That is to maintainn sync for input, output and image processing. This may cause an artifact known as -tearing- in video games.
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LCD doesn't use raster scanning. All pixels that change color are refreshed at specific intervals, usually 60, 120 or 144 times a second. If a pixel stays the same color and intensity, it is not refreshed.
GPUs would sometimes choose to refresh the top half first, and then the bottom, and sometimes divide the display into even more sections for sequential refresh. That is to maintainn sync for input, output and image processing. This may cause an artifact known as -tearing- in video games.
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Ceylan
Carrie Anne is such an amazing instructor. Her voice, volume and energy is just perfect. Now if only the subject matter wasn't too technical for me and I didn't experience headaches after, this would be my favorite course.
Keep up the good work.
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Carrie Anne is such an amazing instructor. Her voice, volume and energy is just perfect. Now if only the subject matter wasn't too technical for me and I didn't experience headaches after, this would be my favorite course.
Keep up the good work.
reply
Jeffrey
You say that programmers don't write the drawing functions, but use graphic libraries with ready-to-go functions. Are these still just draw functions but made by someone else for time-saving, or is it an entirely different way of drawing graphics?
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You say that programmers don't write the drawing functions, but use graphic libraries with ready-to-go functions. Are these still just draw functions but made by someone else for time-saving, or is it an entirely different way of drawing graphics?
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Nicole
Can someone help me find the episode discussing the role of the NSF in laying groundwork for modern computer science? This is a fantastic series, and I want to share it with my colleagues in federal consulting. Thanks!
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Can someone help me find the episode discussing the role of the NSF in laying groundwork for modern computer science? This is a fantastic series, and I want to share it with my colleagues in federal consulting. Thanks!
reply
Sky
I'm actually quite surprised to see gender and race representation in some of these old photo clips. There's a lot of talk now about how stem subjects are white male dominated. What ever happened?
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I'm actually quite surprised to see gender and race representation in some of these old photo clips. There's a lot of talk now about how stem subjects are white male dominated. What ever happened?
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Ali
What I learned from this course made me appreciate the hard work went into technology we use today.
I curious on what more innovations to come. I would like to be part of it too.
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What I learned from this course made me appreciate the hard work went into technology we use today.
I curious on what more innovations to come. I would like to be part of it too.
reply
Devonly
Brings back memories, coders these day are spoilt with bazillion libraries and APIs. I still remember having to read and write a bitmap from file and into a video buffer.
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Brings back memories, coders these day are spoilt with bazillion libraries and APIs. I still remember having to read and write a bitmap from file and into a video buffer.
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Bipin
thank for this video series. but it's very to find next /prev video of the series. can you reorganize this series into one playlist, please!
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thank for this video series. but it's very to find next /prev video of the series. can you reorganize this series into one playlist, please!
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Shae
3 years deep into my CS degree and this is the video that finally demystified the most fundamental things I've been curious about.
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3 years deep into my CS degree and this is the video that finally demystified the most fundamental things I've been curious about.
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Pierre
I've been a programmer for 20 years and I learn new things in many of your videos. They are a treat for absolutely everyone!
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I've been a programmer for 20 years and I learn new things in many of your videos. They are a treat for absolutely everyone!
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