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I need to draw voxels using a float array like this:

{ v1.x, v1.y, v1.z, v1.size, v2.x, [...] }

which in my case, for testing purposes looks like this: 

{ -0.6f, -0.4f, -0.0f, 1, 0.6f, -0.4f, -0.0f, 1, 0.f, 0.6f, -0.0f, 1, }

How do I load those up to the GPU and how do I then get the position and size values in the shaders?

genpfault
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l'arbre
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1 Answers1

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You need to create a Buffer object of Vertices, then pass it to the GPU using specific APIs. In the shader, you can access data for each vertex. Take a look at the API glBufferData, for example in https://open.gl/drawing.

I am not sure if you would really need the Size/number of the vertices, but if you need it, you would need it to pass it as an uniform via glUniform1f.

Prabindh
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