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Update R_DrawFloorSprite_NPO2_8 and R_DrawTranslucentFloorSprite_NPO2_8 to have the lastest NPO2 optimizations

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This commit is contained in:
Jaime Ita Passos 2020-11-19 00:59:37 -03:00
parent 5e890ee6f8
commit 389763a550
1 changed files with 64 additions and 22 deletions
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86
src/r_draw8_npo2.c
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@ -818,6 +818,8 @@ void R_DrawFloorSprite_NPO2_8 (void)
fixed_t xposition;
fixed_t yposition;
fixed_t xstep, ystep;
fixed_t x, y;
fixed_t fixedwidth, fixedheight;
UINT16 *source;
UINT8 *translation;
@ -836,20 +838,39 @@ void R_DrawFloorSprite_NPO2_8 (void)
translation = ds_translation;
dest = ylookup[ds_y] + columnofs[ds_x1];
fixedwidth = ds_flatwidth << FRACBITS;
fixedheight = ds_flatheight << FRACBITS;
// Fix xposition and yposition if they are out of bounds.
if (xposition < 0)
xposition = fixedwidth - ((UINT32)(fixedwidth - xposition) % fixedwidth);
else if (xposition >= fixedwidth)
xposition %= fixedwidth;
if (yposition < 0)
yposition = fixedheight - ((UINT32)(fixedheight - yposition) % fixedheight);
else if (yposition >= fixedheight)
yposition %= fixedheight;
while (count-- && dest <= deststop)
{
fixed_t x = (xposition >> FRACBITS);
fixed_t y = (yposition >> FRACBITS);
// Carefully align all of my Friends.
if (x < 0)
x = ds_flatwidth - ((UINT32)(ds_flatwidth - x) % ds_flatwidth);
if (y < 0)
y = ds_flatheight - ((UINT32)(ds_flatheight - y) % ds_flatheight);
x %= ds_flatwidth;
y %= ds_flatheight;
// The loops here keep the texture coordinates within the texture.
// They will rarely iterate multiple times, and are cheaper than a modulo operation,
// even if using libdivide.
if (xstep < 0) // These if statements are hopefully hoisted by the compiler to above this loop
while (xposition < 0)
xposition += fixedwidth;
else
while (xposition >= fixedwidth)
xposition -= fixedwidth;
if (ystep < 0)
while (yposition < 0)
yposition += fixedheight;
else
while (yposition >= fixedheight)
yposition -= fixedheight;
x = (xposition >> FRACBITS);
y = (yposition >> FRACBITS);
val = source[((y * ds_flatwidth) + x)];
if (val & 0xFF00)
*dest = colormap[translation[val & 0xFF]];
@ -867,6 +888,8 @@ void R_DrawTranslucentFloorSprite_NPO2_8 (void)
fixed_t xposition;
fixed_t yposition;
fixed_t xstep, ystep;
fixed_t x, y;
fixed_t fixedwidth, fixedheight;
UINT16 *source;
UINT8 *translation;
@ -885,20 +908,39 @@ void R_DrawTranslucentFloorSprite_NPO2_8 (void)
translation = ds_translation;
dest = ylookup[ds_y] + columnofs[ds_x1];
fixedwidth = ds_flatwidth << FRACBITS;
fixedheight = ds_flatheight << FRACBITS;
// Fix xposition and yposition if they are out of bounds.
if (xposition < 0)
xposition = fixedwidth - ((UINT32)(fixedwidth - xposition) % fixedwidth);
else if (xposition >= fixedwidth)
xposition %= fixedwidth;
if (yposition < 0)
yposition = fixedheight - ((UINT32)(fixedheight - yposition) % fixedheight);
else if (yposition >= fixedheight)
yposition %= fixedheight;
while (count-- && dest <= deststop)
{
fixed_t x = (xposition >> FRACBITS);
fixed_t y = (yposition >> FRACBITS);
// Carefully align all of my Friends.
if (x < 0)
x = ds_flatwidth - ((UINT32)(ds_flatwidth - x) % ds_flatwidth);
if (y < 0)
y = ds_flatheight - ((UINT32)(ds_flatheight - y) % ds_flatheight);
x %= ds_flatwidth;
y %= ds_flatheight;
// The loops here keep the texture coordinates within the texture.
// They will rarely iterate multiple times, and are cheaper than a modulo operation,
// even if using libdivide.
if (xstep < 0) // These if statements are hopefully hoisted by the compiler to above this loop
while (xposition < 0)
xposition += fixedwidth;
else
while (xposition >= fixedwidth)
xposition -= fixedwidth;
if (ystep < 0)
while (yposition < 0)
yposition += fixedheight;
else
while (yposition >= fixedheight)
yposition -= fixedheight;
x = (xposition >> FRACBITS);
y = (yposition >> FRACBITS);
val = source[((y * ds_flatwidth) + x)];
if (val & 0xFF00)
*dest = *(ds_transmap + (colormap[translation[val & 0xFF]] << 8) + *dest);