December 2013
Intermediate to advanced
116 pages
2h 15m
English
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Vertex shader outputs
Vertex shaders can output generic values to the next stage. Those values are going to be passed to the geometry shading stage first, then rasterized, and finally passed to the fragment shading stage in one of the allowed interpolation fashions. You can choose the kind of interpolation, but we will use in this book a linear perspective-corrected interpolation.
To specify an output variable, you must use the interpolation type along with the out keyword:
#version 430 #pragma debug(on) #pragma optimize(off) layout (location = 0) in vec4 Position; layout (location = 1) in vec2 TexCoord; uniform mat4 Modelview; uniform mat4 Projection; // smooth = linearly perspective-correct interpolation smooth out vec2 texCoordsInterpolated; ...
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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.