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Revert: Sprite sorting optimisation sorted incorrectly. 

This reverts commit 25ab9c1997.
This commit is contained in:
frosch 2018-11-15 23:12:37 +01:00 committed by Niels Martin Hansen
parent 68e6b5531a
commit 1a1204472e
2 changed files with 6 additions and 39 deletions
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20
src/viewport.cpp
View File

@ -88,7 +88,6 @@
#include "command_func.h"
#include "network/network_func.h"
#include "framerate_type.h"
#include "core/sort_func.hpp"
#include <map>
@ -1380,22 +1379,11 @@ static bool ViewportSortParentSpritesChecker()
return true;
}
static int CDECL CompareParentSprites(ParentSpriteToDraw * const *psd, ParentSpriteToDraw * const *psd2)
{
const ParentSpriteToDraw *ps = *psd;
const ParentSpriteToDraw *ps2 = *psd2;
return ps->xmin - ps2->xmin;
}
/** Sort parent sprites pointer array */
static void ViewportSortParentSprites(ParentSpriteToSortVector *psdv)
{
ParentSpriteToDraw **psdvend = psdv->End();
ParentSpriteToDraw **psd = psdv->Begin();
/* pre-sort by xmin in ascending order */
QSortT(psd, psdvend - psd, CompareParentSprites);
while (psd != psdvend) {
ParentSpriteToDraw *ps = *psd;
@ -1432,11 +1420,9 @@ static void ViewportSortParentSprites(ParentSpriteToSortVector *psdv)
* I.e. every single order of X, Y, Z says ps2 is behind ps or they overlap.
* That is: If one partial order says ps behind ps2, do not change the order.
*/
if (ps->xmax < ps2->xmin) {
/* all following sprites have xmin >= ps2->xmin */
break;
}
if (ps->ymax < ps2->ymin || ps->zmax < ps2->zmin) {
if (ps->xmax < ps2->xmin ||
ps->ymax < ps2->ymin ||
ps->zmax < ps2->zmin) {
continue;
}
}

25
src/viewport_sprite_sorter_sse4.cpp
View File

@ -15,7 +15,6 @@
#include "cpu.h"
#include "smmintrin.h"
#include "viewport_sprite_sorter.h"
#include "core/sort_func.hpp"
#include "safeguards.h"
@ -26,24 +25,12 @@
#define LOAD_128 _mm_loadu_si128
#endif
static int CDECL CompareParentSprites(ParentSpriteToDraw * const *psd, ParentSpriteToDraw * const *psd2)
{
const ParentSpriteToDraw *ps = *psd;
const ParentSpriteToDraw *ps2 = *psd2;
return ps->xmin - ps2->xmin;
}
/** Sort parent sprites pointer array using SSE4.1 optimizations. */
void ViewportSortParentSpritesSSE41(ParentSpriteToSortVector *psdv)
{
const __m128i mask_ptest = _mm_setr_epi8(-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0);
const __m128i mask_ptest2 = _mm_setr_epi8(-1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
const __m128i mask_ptest = _mm_setr_epi8(-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0);
ParentSpriteToDraw ** const psdvend = psdv->End();
ParentSpriteToDraw **psd = psdv->Begin();
/* pre-sort by xmin in ascending order */
QSortT(psd, psdvend - psd, CompareParentSprites);
while (psd != psdvend) {
ParentSpriteToDraw * const ps = *psd;
@ -77,14 +64,8 @@ void ViewportSortParentSpritesSSE41(ParentSpriteToSortVector *psdv)
__m128i ps1_max = LOAD_128((__m128i*) &ps->xmax);
__m128i ps2_min = LOAD_128((__m128i*) &ps2->xmin);
__m128i rslt1 = _mm_cmplt_epi32(ps1_max, ps2_min);
if (!_mm_testz_si128(mask_ptest, rslt1)) {
if (!_mm_testz_si128(mask_ptest2, rslt1) /* ps->xmax < ps2->xmin */) {
/* all following sprites have xmin >= ps2->xmin */
break;
} else {
continue;
}
}
if (!_mm_testz_si128(mask_ptest, rslt1))
continue;
__m128i ps1_min = LOAD_128((__m128i*) &ps->xmin);
__m128i ps2_max = LOAD_128((__m128i*) &ps2->xmax);