June 2013
Intermediate to advanced
346 pages
8h 42m
English
Content preview from OpenGL ES 2 for AndroidBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Customizing the Appearance of Our Points
You may have noticed that our points are being rendered as small squares, with the number of pixels on each side equal to the value of gl_PointSize. Using another special OpenGL variable, gl_PointCoord, we can actually customize the appearance of our points. For each point, when the fragment shader is run, we’ll get a two-dimensional gl_PointCoord coordinate with each component ranging from 0 to 1 on each axis, depending on which fragment in the point is currently being rendered.
To see how this works, we’ll first use gl_PointCoord to draw our fragments as circles instead of squares. How can we do this? Well, each point will be rendered with fragments that range from 0 to 1 on each axis relative to
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.