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- Expand truecolor sky buffer from 4 columns to 2048 columns. 2048 is probably the max we'll ever need, even with 4k, 8k, or higher resolutions, since the algorithm checks for repeat columns.

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This commit is contained in:
raa-eruanna 2016-10-13 02:12:48 -04:00
parent e01cdf6946
commit d96ec6c311
1 changed files with 5 additions and 4 deletions
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9
src/r_plane.cpp
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@ -852,10 +852,11 @@ extern FTexture *rw_pic;
// since the most anyone can ever see of the sky is 500 pixels.
// We need 4 skybufs because wallscan can draw up to 4 columns at a time.
// Need two versions - one for true color and one for palette
#define MAXSKYBUF 2048
static BYTE skybuf[4][512];
static uint32_t skybuf_bgra[4][512];
static uint32_t skybuf_bgra[MAXSKYBUF][512];
static DWORD lastskycol[4];
static DWORD lastskycol_bgra[4];
static DWORD lastskycol_bgra[MAXSKYBUF];
static int skycolplace;
static int skycolplace_bgra;
@ -945,7 +946,7 @@ static const BYTE *R_GetTwoSkyColumns (FTexture *fronttex, int x)
else
{
//return R_GetOneSkyColumn(fronttex, x);
for (i = 0; i < 4; ++i)
for (i = 0; i < MAXSKYBUF; ++i)
{
if (lastskycol_bgra[i] == skycol)
{
@ -955,7 +956,7 @@ static const BYTE *R_GetTwoSkyColumns (FTexture *fronttex, int x)
lastskycol_bgra[skycolplace_bgra] = skycol;
uint32_t *composite = skybuf_bgra[skycolplace_bgra];
skycolplace_bgra = (skycolplace_bgra + 1) & 3;
skycolplace_bgra = (skycolplace_bgra + 1) % MAXSKYBUF;
// The ordering of the following code has been tuned to allow VC++ to optimize
// it well. In particular, this arrangement lets it keep count in a register