Ishaan Singh

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About Ishaan Singh

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  1. Hi I'd like to ask.. Im trying to build a cuda-gl code that replicates the data present in the vbo and perturbs it by a little bit (just to see if this is working). The end goal is to tessellate uniformly using cuda-gl. I have a vbo which is twice the size of the mesh currently. I'm spawning numFaces*3 cuda threads (one for each vertex) and would like each thread to copy the data present in the vertex corresponding to the x = blockID.x*blockDim.x + threadID.x into x+mesh_size and add a little offset to the x coordinate. the kernel looks like this: [code]__global__ void kernel(float3* pos, float3* norm, unsigned int mesh_size, float time) { unsigned int x = blockIdx.x*blockDim.x + threadIdx.x; time=time; if(x<mesh_size) { pos[x+mesh_size]=pos[x]; pos[x+mesh_size].x += cosf(time); norm[x+mesh_size]=norm[x]; } } [/code] The kernel has as input, two vbos, one for positions, one for normals. The problem is that, if the above code works, i should ideally see two objects, one static and one moving, but I only seem to be able to see the first half of the vbo, ie. a single copy of the mesh. Any help would be greatly appreciated as we're working on a deadline by our professor.