CODEWITHSUNDEEP
c++openglopencl
mmostajab
mmostajab

Reputation: 2037

Drawing in OpenGL using Number of Primitives on the GPU

I have computed vertices and how they should connect to each other (Indices) using OpenCL and they are already in GPU. So, as I know it is possible to share these buffers with opengl. But to call glDrawElements, I need the number of primitives to be drawn which is currently on the gpu and I don't like to read these numbers from GPU because it will decrease my application performance, so I am looking for some draw call functions which I can specify the number of primitives by a variable which is currently on the GPU. Anyone knows about that?

Upvotes: 0

Views: 132

Answers (1)

mmostajab
mmostajab

Reputation: 2037

draw*Indirect functions helped me to solve this problem. For my case because I had multiple indices array, glMultiDrawElementsIndirect was more helpful.

Upvotes: 1

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