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Undo removal of wallscan_np2 and wallscan_np2_ds

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This commit is contained in:
Magnus Norddahl 2016-06-11 00:50:36 +02:00
parent d5331e6095
commit a6d696bbfd
1 changed files with 115 additions and 16 deletions
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117
src/r_segs.cpp
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@ -1072,16 +1072,17 @@ uint32_t wallscan_drawcol1(int x, int y1, int y2, uint32_t uv_start, uint32_t uv
if (uv_max == 0) // power of two
{
int count = y2 - y1;
if (count > 0)
{
dc_source = source;
dc_dest = (ylookup[y1] + x) * pixelsize + dc_destorg;
dc_count = y2 - y1;
dc_count = count;
dc_iscale = uv_step;
dc_texturefrac = uv_start;
draw1column();
}
return uv_start + uv_step * (uint32_t)count;
uint64_t step64 = uv_step;
uint64_t pos64 = uv_start;
return (uint32_t)(pos64 + step64 * count);
}
else
{
@ -1119,15 +1120,19 @@ void wallscan_drawcol4(int x, int y1, int y2, uint32_t *uv_pos, uint32_t *uv_ste
int pixelsize = r_swtruecolor ? 4 : 1;
if (uv_max == 0) // power of two, no wrap handling needed
{
int count = y2 - y1;
for (int i = 0; i < 4; i++)
{
bufplce[i] = source[i];
vplce[i] = uv_pos[i];
vince[i] = uv_step[i];
uv_pos[i] += uv_step[i] * (y2 - y1);
uint64_t step64 = uv_step[i];
uint64_t pos64 = uv_pos[i];
uv_pos[i] = (uint32_t)(pos64 + step64 * count);
}
dc_dest = (ylookup[y1] + x) * pixelsize + dc_destorg;
dc_count = y2 - y1;
dc_count = count;
draw4columns();
}
else
@ -1481,17 +1486,111 @@ static void call_wallscan(int x1, int x2, short *uwal, short *dwal, float *swal,
}
}
// wallscan now tiles with non-power-of-two textures - this function is therefore not needed anymore..
//=============================================================================
//
// wallscan_np2
//
// This is a wrapper around wallscan that helps it tile textures whose heights
// are not powers of 2. It divides the wall into texture-sized strips and calls
// wallscan for each of those. Since only one repetition of the texture fits
// in each strip, wallscan will not tile.
//
//=============================================================================
void wallscan_np2(int x1, int x2, short *uwal, short *dwal, float *swal, fixed_t *lwal, double yrepeat, double top, double bot, bool mask)
{
if (!r_np2)
{
call_wallscan(x1, x2, uwal, dwal, swal, lwal, yrepeat, mask);
}
else
{
short most1[MAXWIDTH], most2[MAXWIDTH], most3[MAXWIDTH];
short *up, *down;
double texheight = rw_pic->GetHeight();
double partition;
double scaledtexheight = texheight / yrepeat;
if (yrepeat >= 0)
{ // normal orientation: draw strips from top to bottom
partition = top - fmod(top - dc_texturemid / yrepeat - ViewPos.Z, scaledtexheight);
if (partition == top)
{
partition -= scaledtexheight;
}
up = uwal;
down = most1;
dc_texturemid = (partition - ViewPos.Z) * yrepeat + texheight;
while (partition > bot)
{
int j = OWallMost(most3, partition - ViewPos.Z, &WallC);
if (j != 3)
{
for (int j = x1; j < x2; ++j)
{
down[j] = clamp(most3[j], up[j], dwal[j]);
}
call_wallscan(x1, x2, up, down, swal, lwal, yrepeat, mask);
up = down;
down = (down == most1) ? most2 : most1;
}
partition -= scaledtexheight;
dc_texturemid -= texheight;
}
call_wallscan(x1, x2, up, dwal, swal, lwal, yrepeat, mask);
}
else
{ // upside down: draw strips from bottom to top
partition = bot - fmod(bot - dc_texturemid / yrepeat - ViewPos.Z, scaledtexheight);
up = most1;
down = dwal;
dc_texturemid = (partition - ViewPos.Z) * yrepeat + texheight;
while (partition < top)
{
int j = OWallMost(most3, partition - ViewPos.Z, &WallC);
if (j != 12)
{
for (int j = x1; j < x2; ++j)
{
up[j] = clamp(most3[j], uwal[j], down[j]);
}
call_wallscan(x1, x2, up, down, swal, lwal, yrepeat, mask);
down = up;
up = (up == most1) ? most2 : most1;
}
partition -= scaledtexheight;
dc_texturemid -= texheight;
}
call_wallscan(x1, x2, uwal, down, swal, lwal, yrepeat, mask);
}
}
}
// wallscan now tiles with non-power-of-two textures - this function is therefore not needed anymore..
static void wallscan_np2_ds(drawseg_t *ds, int x1, int x2, short *uwal, short *dwal, float *swal, fixed_t *lwal, double yrepeat)
{
if (rw_pic->GetHeight() != 1 << rw_pic->HeightBits)
{
double frontcz1 = ds->curline->frontsector->ceilingplane.ZatPoint(ds->curline->v1);
double frontfz1 = ds->curline->frontsector->floorplane.ZatPoint(ds->curline->v1);
double frontcz2 = ds->curline->frontsector->ceilingplane.ZatPoint(ds->curline->v2);
double frontfz2 = ds->curline->frontsector->floorplane.ZatPoint(ds->curline->v2);
double top = MAX(frontcz1, frontcz2);
double bot = MIN(frontfz1, frontfz2);
if (fake3D & FAKE3D_CLIPTOP)
{
top = MIN(top, sclipTop);
}
if (fake3D & FAKE3D_CLIPBOTTOM)
{
bot = MAX(bot, sclipBottom);
}
wallscan_np2(x1, x2, uwal, dwal, swal, lwal, yrepeat, top, bot, true);
}
else
{
call_wallscan(x1, x2, uwal, dwal, swal, lwal, yrepeat, true);
}
}
//
// R_RenderSegLoop