Sparse GPU Voxelization of Yarn-Level Cloth

glGenBuffers ( 1 , &modelMatrixbuffer ) ; glBindBuffer (GL_ARRAY_BUFFER , modelMatrixbuffer ) ; glBufferData (GL_ARRAY_BUFFER , m_numberOfProfiles∗ ←↩ sizeof ( mat4 ) , NULL , GL_DYNAMIC_DRAW ) ; / / R e g i s t e r VBO wi th CUDA glBindBuffer ( GL_ARRAY_BUFFER , modelMatrixbuffer ) ; registerGLBufferObject (modelMatrixbuffer , &←↩ m_cuda_vbo_resource ) ; m_slices = (glm : : mat4 ∗)glMapBuffer (GL_ARRAY_BUFFER , ←↩ GL_WRITE_ONLY ) ; / / Compute and f i l l modelview d a t a i n m _ s l i c e s . . . / / Now g i v e a h a n d l e t o t h e m a t r i c e s a r r a y f o r t h e ←↩ CUDA s o r t i n g a l g o r t i h m s glUnmapBuffer (GL_ARRAY_BUFFER ) ; vo id∗ d_matrices = mapGLBufferObject(&←↩ m_cuda_vbo_resource ) ; / / S o r t w i th CUDA k e r n e l s