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Fix sky stretching on widescreen displays

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This commit is contained in:
Magnus Norddahl 2016-07-06 20:19:01 +02:00
parent b0e9adfc10
commit 19030b555f
1 changed files with 5 additions and 9 deletions
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14
src/r_plane.cpp
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@ -880,21 +880,17 @@ static DWORD lastskycol_bgra[4];
static int skycolplace; static int skycolplace;
static int skycolplace_bgra; static int skycolplace_bgra;
// Treat sky as a cube rather than a cylinder CVAR(Bool, r_linearsky, true, CVAR_ARCHIVE | CVAR_GLOBALCONFIG);
CVAR(Bool, r_cubesky, true, CVAR_ARCHIVE | CVAR_GLOBALCONFIG);
// Get a column of sky when there is only one sky texture. // Get a column of sky when there is only one sky texture.
static const BYTE *R_GetOneSkyColumn (FTexture *fronttex, int x) static const BYTE *R_GetOneSkyColumn (FTexture *fronttex, int x)
{ {
int tx; int tx;
if (r_cubesky) if (r_linearsky)
{ {
int tx0 = (UMulScale16((skyangle + xtoviewangle[0]) ^ skyflip, frontcyl) + frontpos) >> FRACBITS; angle_t xangle = (angle_t)((0.5 - x / (double)viewwidth) * FocalTangent * ANGLE_90);
int tx1 = tx0 - ((UMulScale16(xtoviewangle[0], frontcyl) * 2) >> FRACBITS); angle_t column = (skyangle + xangle) ^ skyflip;
tx = (int)(tx0 + (tx1 - tx0) * x / viewwidth + 0.5); tx = (UMulScale16(column, frontcyl) + frontpos) >> FRACBITS;
tx %= fronttex->GetWidth();
if (tx < 0)
tx += fronttex->GetWidth();
} }
else else
{ {