Research Article
FPGA Acceleration of Communication-Bound Streaming Applications: Architecture Modeling and a 3D Image Compositing Case Study
Listing 1
Code for the compositing.
/⋆compose function | Parameters: | pic_a: base address of first framebuffer | pic_b: base address of second framebuffer | size: frame size in pixels | Note: | –pic_a is also the destination of the composed | frame | –framebuffers are directly followed | by z-buffers, that is, z_a = pic_a + size | ⋆/ | void compose (int ⋆ pic_a, int ⋆ pic_b, int size) { | //calculate base addresses of z-buffers | int ⋆z_a = pic_a + size; | int ⋆z_b = pic_b + size; | for (int i = 0; i < size; i++) { | if (z_b[i] < z_a[i]) { | pic_a[i] = pic_b[i]; | z_a[i] = z_b[i]; | } |
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