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Check for papersprites per-sprite instead of per-row 

In theory, should be a performance improvement. In practice idk
This commit is contained in:
fickleheart 2019-12-27 11:48:40 -06:00
parent 1790891fd8
commit ccc473917e
1 changed files with 26 additions and 16 deletions
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42
src/r_things.c
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@ -891,41 +891,51 @@ static void R_DrawVisSprite(vissprite_t *vis)
if (vis->x2 >= vid.width)
vis->x2 = vid.width-1;
for (dc_x = vis->x1; dc_x <= vis->x2; dc_x++, frac += vis->xiscale)
// Split drawing loops for paper and non-paper to reduce conditional checks per sprite
if (vis->scalestep)
{
if (vis->scalestep)
// Papersprite drawing loop
for (dc_x = vis->x1; dc_x <= vis->x2; dc_x++, spryscale += vis->scalestep)
{
angle_t angle = ((vis->centerangle + xtoviewangle[dc_x]) >> ANGLETOFINESHIFT) & 0xFFF;
texturecolumn = (vis->paperoffset - FixedMul(FINETANGENT(angle), vis->paperdistance)) / this_scale;
if (texturecolumn < 0 || texturecolumn >= SHORT(patch->width))
{
spryscale += vis->scalestep;
continue;
}
if (vis->xiscale < 0)
if (vis->xiscale < 0) // Flipped sprite
texturecolumn = SHORT(patch->width) - 1 - texturecolumn;
sprtopscreen = (centeryfrac - FixedMul(dc_texturemid, spryscale));
dc_iscale = (0xffffffffu / (unsigned)spryscale);
column = (column_t *)((UINT8 *)patch + LONG(patch->columnofs[texturecolumn]));
if (vis->cut & SC_VFLIP)
R_DrawFlippedMaskedColumn(column, patch->height);
else
R_DrawMaskedColumn(column);
}
else
}
else
{
// Non-paper drawing loop
for (dc_x = vis->x1; dc_x <= vis->x2; dc_x++, frac += vis->xiscale)
{
texturecolumn = frac>>FRACBITS;
#ifdef RANGECHECK
texturecolumn = frac>>FRACBITS;
if (texturecolumn < 0 || texturecolumn >= SHORT(patch->width))
I_Error("R_DrawSpriteRange: bad texturecolumn at %d from end", vis->x2 - dc_x);
column = (column_t *)((UINT8 *)patch + LONG(patch->columnofs[texturecolumn]));
#else
column = (column_t *)((UINT8 *)patch + LONG(patch->columnofs[frac>>FRACBITS]));
#endif
if (vis->cut & SC_VFLIP)
R_DrawFlippedMaskedColumn(column, patch->height);
else
R_DrawMaskedColumn(column);
}
column = (column_t *)((UINT8 *)patch + LONG(patch->columnofs[texturecolumn]));
if (vis->cut & SC_VFLIP)
R_DrawFlippedMaskedColumn(column, patch->height);
else
R_DrawMaskedColumn(column);
spryscale += vis->scalestep;
}
colfunc = colfuncs[BASEDRAWFUNC];