• Ell's avatar
    transform: only rasterize inside the transformed polygon · 30c5af97
    Ell authored
    Calculate the limits of each scanline that are inside the
    transformed and clipped bounding-box of the input (with sufficient
    headroom for the sampler context rect, and for box filtering), and
    only rasterize inside those limits, zeroing the rest of the output.
    
    This slightly improves performance, and avoids perspective-
    transform artifacts when sampling close to the horizon.
    30c5af97
transform-core.c 55.1 KB