AnarchistGamers/woof
1
0
Fork 0
mirror of https://github.com/fabiangreffrath/woof.git synced 2025-09-25 05:48:03 -04:00
Code Issues Packages Projects Releases Wiki Activity

restore fuzzy spectre rendering contrast in blocky hires mode (#478)

Browse Source 
* restore fuzzy spectre rendering contrast in blocky hires mode

* vast simplification

draw 2x2 pixels with the same fuzz offset

* remove debug aid, fix comments

* draw only even columns,draw only even pixels as a 2x2 squares

* grammar
This commit is contained in:
Fabian Greffrath 2022-03-23 06:21:29 +01:00 committed by GitHub
parent 93cab18d97
commit 4f2334a3a3
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 35 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

57
Source/r_draw.c
View File

@ -387,25 +387,30 @@ static void R_DrawFuzzColumn_orig(void)
}
// [FG] "blocky" spectre drawing for hires mode:
// draw only each second column, but draw it twice and
// apply the same fuzzoffset to two adjacent pixels
// draw only even columns, in each column
// draw only even pixels as 2x2 squares
// using the same fuzzoffset value
static void R_DrawFuzzColumn_block(void)
{
int count;
byte *dest, *dest2;
byte *dest;
boolean cutoff = false;
// [FG] draw only each second column
// [FG] draw only even columns
if (dc_x & 1)
return;
if (!dc_yl)
dc_yl = 1;
// [FG] draw only even pixels
dc_yl &= (int)~1;
dc_yh &= (int)~1;
if (dc_yh == viewheight-1)
if (!dc_yl)
dc_yl = 2;
if (dc_yh == viewheight-2)
{
dc_yh = viewheight - 2;
dc_yh = viewheight - 4;
cutoff = true;
}
@ -422,32 +427,40 @@ static void R_DrawFuzzColumn_block(void)
dc_yl, dc_yh, dc_x);
#endif
// [FG] draw each column twice
dest = ylookup[dc_yl] + columnofs[dc_x];
dest2 = ylookup[dc_yl] + columnofs[dc_x+1];
count++;
count+=2;
do
{
*dest = fullcolormap[6*256+dest[fuzzoffset[fuzzpos] ? linesize : -linesize]];
*dest2 = fullcolormap[6*256+dest2[fuzzoffset[fuzzpos] ? linesize : -linesize]];
// [FG] draw only even pixels as 2x2 squares
// using the same fuzzoffset value
const byte fuzz = fullcolormap[6*256+dest[fuzzoffset[fuzzpos] ? 2*linesize : -2*linesize]];
dest[0] = fuzz;
dest[1] = fuzz;
dest += linesize;
dest2 += linesize;
// [FG] draw two adjacent pixels with the same fuzz offset
if (count & 1)
fuzzpos++;
dest[0] = fuzz;
dest[1] = fuzz;
dest += linesize;
fuzzpos++;
fuzzpos &= (fuzzpos - FUZZTABLE) >> (8*sizeof fuzzpos-1);
}
while (--count);
while (count -= 2);
if (cutoff)
{
*dest = fullcolormap[6*256+dest[linesize*fuzzoffset[fuzzpos]]];
*dest2 = fullcolormap[6*256+dest2[linesize*fuzzoffset[fuzzpos]]];
}
{
const byte fuzz = fullcolormap[6*256+dest[2*linesize*fuzzoffset[fuzzpos]]];
dest[0] = fuzz;
dest[1] = fuzz;
dest += linesize;
dest[0] = fuzz;
dest[1] = fuzz;
}
}
// [FG] spectre drawing mode: 0 original, 1 blocky (hires)