tree 4084175b6e4eaa174c4dfa085d1db53b6422a029
parent 7d827e94f72cd0c71be1bf3f15398c3a2b0e5ff9
author Nicolas Capens <nicolas.capens@gmail.com> 1660894130 -0400
committer Nicolas Capens <nicolascapens@google.com> 1660920896 +0000

Simplify clipping of complex polygons

Polygons constructed for point and line rendering previously had clip
flags computed for each new vertex. This costs about as much as actually
performing full polygon clipping, so we can just do that immediately.

Note that for triangles we still take advantage of the clip flags that
cheaply get computed in parallel in the vertex routine, to skip polygon
clipping when fully inside the frustum.

Bug: b/207658159
Change-Id: I17e6c95bb7e9ffe601f5e4403cb0c43c62f7f941
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/67649
Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>
Kokoro-Result: kokoro <noreply+kokoro@google.com>