Join Pablo Colapinto for an in-depth discussion in this video Adding color attributes, part of Learning OpenGL.
In this lesson, we'll take a look at sending…more attributes over like color.…Here is our initiator source code.…On line 34, we varied a new attribute vec four called color.…On 36, varying vec four destination color or dst color.…In our main vertex shader function,…we just set dst color to color.…This allows our fragment shader…to take dst color as our input.…In our fragment shaders main function,…we can set GL frag color to the dst color.…
We have an input color coming into the vertex shader,…and being sent into the fragment shader.…We've created a new plain old data type of vec four.…This will be used to store our color information.…Our vertex struct now contains not only a vec two…holding its position, but also a vec four for color.…We've also added a new color ID vertex attribute…which we're going to need to assign in our main code.…
Linking compile our shader in the normal way.…In here on line 189, we ask the shader…to send us the position of its color attribute.…We generate and bind our vertex array shaders…
- What is OpenGL?
- Setting up an OpenGL workflow
- Creating a window with GLFW
- Working with geometric primitives
- Rotating, translating, and scaling
- Understanding matrix transformations
- Creating mesh data structures
- Buffering mesh data
- Getting mouse and keyboard input
Skill Level Intermediate
Q: Why am I getting errors saying I don’t have GLEW installed when I try to create the Xcode projects with Cmake?
1) Download, Install, and Run Xcode
ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)"
brew install glew
./bootstrap && make && make install
brew install cmake
cd Exercise Filesmkdir xcodecd xcodecmake -G "Xcode" ..