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Some cherrypicks from SRB2 Classic's 'Faster software drawing'

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-Textures with 0 height are not checked for wraps, this helps speed up multipatch columns.
-A useless call to R_FakeFlat has been removed.
-Slopes now use floats rather than doubles to calculate UV coordinates.
This commit is contained in:
NepDisk 2025-07-02 21:38:06 -04:00
parent d502c04698
commit 0bf360a82e
2 changed files with 25 additions and 11 deletions
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16
src/r_draw_column.cpp
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@ -225,7 +225,21 @@ static void R_DrawColumnTemplate(drawcolumndata_t *dc)
npow2min = -1;
npow2max = dc->sourcelength;
if (dc->sourcelength & heightmask) // not a power of 2 -- killough
if (heightmask == -1)
{
if (frac < 0)
// adjust in case we underread
frac += FRACUNIT;
// texture has no height, so just go
while (--count > 0)
{
INT32 n = frac >> FRACBITS;
dest += vid.width;
*dest = R_DrawColumnPixel<Type>(dc, dest, n);
}
}
else if (dc->texheight & heightmask) // not a power of 2 -- killough
{
heightmask = dc->texheight << FRACBITS;

20
src/r_draw_span.cpp
View file

@ -255,7 +255,7 @@ static void R_DrawTiltedSpanTemplate(drawspandata_t* ds)
{
// x1, x2 = ds_x1, ds_x2
int width = ds->x2 - ds->x1;
double iz, uz, vz;
float iz, uz, vz;
UINT32 u, v;
int i;
@ -263,9 +263,9 @@ static void R_DrawTiltedSpanTemplate(drawspandata_t* ds)
UINT8 *dest;
UINT8 *dsrc;
double startz, startu, startv;
double izstep, uzstep, vzstep;
double endz, endu, endv;
float startz, startu, startv;
float izstep, uzstep, vzstep;
float endz, endu, endv;
UINT32 stepu, stepv;
UINT32 bit;
INT32 tiltlighting[MAXVIDWIDTH];
@ -390,7 +390,7 @@ static void R_DrawTiltedSpanTemplate(drawspandata_t* ds)
}
else
{
double left = width;
float left = width;
iz += ds->szp.x * left;
uz += ds->sup.x * left;
vz += ds->svp.x * left;
@ -514,7 +514,7 @@ static void R_DrawTiltedNPO2SpanTemplate(drawspandata_t* ds)
{
// x1, x2 = ds_x1, ds_x2
int width = ds->x2 - ds->x1;
double iz, uz, vz;
float iz, uz, vz;
UINT32 u, v;
int i;
@ -522,9 +522,9 @@ static void R_DrawTiltedNPO2SpanTemplate(drawspandata_t* ds)
UINT8 *dest;
UINT8 *dsrc;
double startz, startu, startv;
double izstep, uzstep, vzstep;
double endz, endu, endv;
float startz, startu, startv;
float izstep, uzstep, vzstep;
float endz, endu, endv;
UINT32 stepu, stepv;
INT32 tiltlighting[MAXVIDWIDTH];
@ -689,7 +689,7 @@ static void R_DrawTiltedNPO2SpanTemplate(drawspandata_t* ds)
}
else
{
double left = width;
float left = width;
iz += ds->szp.x * left;
uz += ds->sup.x * left;
vz += ds->svp.x * left;