We present hardware-accelerated texture advection
techniques to visualize the motion of particles
in steady or time-varying vector fields.
We propose an implementation of 2D texture advection which
exploits advanced and programmable texture fetch and
per-pixel blending operations on an nVidia GeForce 3.
For 3D vector field visualization, we present an algorithm
for SGI's VPro, based on pixel textures and
3D textures. Moreover, we sketch how 3D texture advection
could be implemented on future graphics boards that provide
programmable fetch operations for 3D textures.
Since all implementations exclusively use graphics hardware
without intermediate data transfer to main memory, extremely
high frame rates are achieved, e.g., up to 90 frames per second
for advecting a calculatory number of one million particles in a 2D flow.
