a69cc9f13d
Since Embree v3.13.0 supports AARCH64, switch back to the
official repo instead of using Embree-aarch64.
`thirdparty/embree/patches/godot-changes.patch` should now contain
an accurate diff of the changes done to the library.
(cherry picked from commit 767e374dce)
96 lines
2.2 KiB
C++
96 lines
2.2 KiB
C++
// Copyright 2009-2021 Intel Corporation
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// SPDX-License-Identifier: Apache-2.0
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#pragma once
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#include "../common/default.h"
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namespace embree
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{
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struct __aligned(16) GridRange
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{
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unsigned int u_start;
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unsigned int u_end;
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unsigned int v_start;
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unsigned int v_end;
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__forceinline GridRange() {}
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__forceinline GridRange(unsigned int u_start, unsigned int u_end, unsigned int v_start, unsigned int v_end)
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: u_start(u_start), u_end(u_end), v_start(v_start), v_end(v_end) {}
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__forceinline unsigned int width() const {
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return u_end-u_start+1;
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}
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__forceinline unsigned int height() const {
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return v_end-v_start+1;
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}
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__forceinline bool hasLeafSize() const
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{
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const unsigned int u_size = u_end-u_start+1;
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const unsigned int v_size = v_end-v_start+1;
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assert(u_size >= 1);
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assert(v_size >= 1);
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return u_size <= 3 && v_size <= 3;
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}
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static __forceinline unsigned int split(unsigned int start,unsigned int end)
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{
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const unsigned int center = (start+end)/2;
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assert (center > start);
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assert (center < end);
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return center;
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}
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__forceinline void split(GridRange& r0, GridRange& r1) const
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{
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assert( hasLeafSize() == false );
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const unsigned int u_size = u_end-u_start+1;
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const unsigned int v_size = v_end-v_start+1;
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r0 = *this;
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r1 = *this;
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if (u_size >= v_size)
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{
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const unsigned int u_mid = split(u_start,u_end);
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r0.u_end = u_mid;
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r1.u_start = u_mid;
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}
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else
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{
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const unsigned int v_mid = split(v_start,v_end);
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r0.v_end = v_mid;
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r1.v_start = v_mid;
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}
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}
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__forceinline unsigned int splitIntoSubRanges(GridRange r[4]) const
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{
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assert( !hasLeafSize() );
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unsigned int children = 0;
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GridRange first,second;
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split(first,second);
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if (first.hasLeafSize()) {
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r[0] = first;
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children++;
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}
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else {
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first.split(r[0],r[1]);
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children += 2;
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}
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if (second.hasLeafSize()) {
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r[children] = second;
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children++;
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}
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else {
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second.split(r[children+0],r[children+1]);
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children += 2;
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}
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return children;
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}
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};
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}
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