Join Pablo Colapinto for an in-depth discussion in this video Generating dynamic vertex buffer data, part of Learning OpenGL.
-So far we've been drawing static meshes, that is,…we've been transforming the vertices on the GPU…using our model matrix transforms…and our view and projection transforms.…But we haven't been changing the vertex data…once we've sent it over to the GPU.…However, we can update that vertex information…whenever we want.…Let's take a look at how this works.…We haven't changed anything in our shader code.…Our vertex struct just contains a position and a color.…
We're now using vectors to contain our vertices and indices.…A significant change is on line 168.…In previous selections, this used to say,…"GL Static Draw" because we didn't expect…to have to update the vertex positions once…we sent them over to the GPU.…Now we're going to prepare for dynamic update…by providing this hint, "GL Dynamic Draw" to the GPU.…The indices into our array will remain the same…throughout the animation.…
This can stay as static.…We prepare our view projection and model…transformation matrices and now…we want to substitute the buffer of data…
- 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" ..