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LibSoftGPU: Dispatch based on ClipPlane enum at compile-time

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The `ClipPlane` enum is being looped over at run-time performing
run-time dispatch to determine the comparison operation in
`point_within_clip_plane`.

Change this `for` loop to be linear code which dispatches using a
template parameter. This allows for the `point_within_clip_plane`
function to do compile-time dispatch.

Note: This linear code can become a compile-time loop when static
reflection lands in C++2[y|z] allowing looping over the reflected
`enum class`.
This commit is contained in:
Lenny Maiorani 2022-01-27 17:18:07 -07:00 • committed by Linus Groh
parent 3c11dc5bd3
commit 2e436129b0
2 changed files with 40 additions and 33 deletions
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3
Userland/Libraries/LibSoftGPU/Clipper.h
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@ -1,5 +1,6 @@
/*
* Copyright (c) 2021, Jesse Buhagiar <jooster669@gmail.com>
* Copyright (c) 2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -13,8 +14,6 @@
namespace SoftGPU {
class Clipper final {
static constexpr u8 NUMBER_OF_CLIPPING_PLANES = 6;
public:
enum class ClipPlane : u8 {
LEFT = 0,